Samsudin Anis; Galuh Nur Budiandono; Danang Dwi Saputro;Samsudin Anis
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesSamsudin Anis in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesZulkarnain Zainal in OpenAIREBiodiesel as a renewable alternative energy produced from vegetable and animal oils can be used as a fuel for diesel engines. However, biodiesel has a high viscosity that affects the performance of the pump, thereby reducing diesel engine performance. One of the ways to overcome this problem is by preheating the fuel. The purpose of this study is to investigate fuel spray pattern and pump performance including capacity, head, and efficiency at various biodiesel/diesel blends (B0-B30) and preheating temperatures of B30 (30°C-70°C) at constant injection pressure. The results showed that pump performance decreased with increasing percentage of biodiesel. The weakest pump performance occurred at B30. Fuel spray pattern did not change too much, except for B30 where the spray angle decreased significantly. Better results were obtained when biodiesel blend of B30 was heated. The highest pump capacity and efficiency occurred at 50°C, while the highest pump head was at 70°C. At 60°C and 70°C, pump experienced an excessive vibration. Fuel spray angle also increased as the preheating temperature rises. The widest spray angle occurred at fuel preheating temperature of 70°C.
Access Routesgold 3 citations 3 popularity Average influence Average impulse Average 
Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.15294/jbat.v7i2.11891&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu- Samsudin Anis; Galuh Nur Budiandono; Danang Dwi Saputro;
Samsudin Anis
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesSamsudin Anis in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesZulkarnain Zainal in OpenAIREBiodiesel as a renewable alternative energy produced from vegetable and animal oils can be used as a fuel for diesel engines. However, biodiesel has a high viscosity that affects the performance of the pump, thereby reducing diesel engine performance. One of the ways to overcome this problem is by preheating the fuel. The purpose of this study is to investigate fuel spray pattern and pump performance including capacity, head, and efficiency at various biodiesel/diesel blends (B0-B30) and preheating temperatures of B30 (30°C-70°C) at constant injection pressure. The results showed that pump performance decreased with increasing percentage of biodiesel. The weakest pump performance occurred at B30. Fuel spray pattern did not change too much, except for B30 where the spray angle decreased significantly. Better results were obtained when biodiesel blend of B30 was heated. The highest pump capacity and efficiency occurred at 50°C, while the highest pump head was at 70°C. At 60°C and 70°C, pump experienced an excessive vibration. Fuel spray angle also increased as the preheating temperature rises. The widest spray angle occurred at fuel preheating temperature of 70°C.
Access Routesgold 3 citations 3 popularity Average influence Average impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.15294/jbat.v7i2.11891&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu 
Tumirah Khadiran; Tumirah Khadiran;Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRE Zulkarnain Zainal; Mohd Zobir Hussein; +1 AuthorsZulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Tumirah Khadiran; Tumirah Khadiran;Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRE Zulkarnain Zainal; Mohd Zobir Hussein; Rafeadah Rusli;Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREAbstract Thermal energy storage based on organic phase change materials (OPCMs) has attracted much attention to various applications for their excellence properties. However, OPCMs suffers from liquid leakage problem and low thermal conductivity, which limit their application as TES material. Encapsulation of OPCMs using organic or inorganic supporting materials is an effective way to overcome the leakage problem and enhancing their thermal conductivity property. In addition, the capsules could prevent possible interaction between OPCMs with the environment. There are many technologies described the encapsulation of OPCMs which depending on the type of supporting material and chemical properties of the OPCMs used. However, no complete overview of the techniques for encapsulation of OPCMs is available in the open literature. In this paper, we reviewed the techniques used for encapsulation of OPCMs and the method used to characterize the physico-chemical and thermal properties of encapsulated OPCMs. We believed that this review could provide useful information on the various encapsulation methods of OPCMs.
239 citations 239 popularity Top 1% influence Top 1% impulse Top 1% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.solmat.2015.06.039&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu- Tumirah Khadiran; Tumirah Khadiran;
Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRE Zulkarnain Zainal; Mohd Zobir Hussein; +1 AuthorsZulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Tumirah Khadiran; Tumirah Khadiran;Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRE Zulkarnain Zainal; Mohd Zobir Hussein; Rafeadah Rusli;Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREAbstract Thermal energy storage based on organic phase change materials (OPCMs) has attracted much attention to various applications for their excellence properties. However, OPCMs suffers from liquid leakage problem and low thermal conductivity, which limit their application as TES material. Encapsulation of OPCMs using organic or inorganic supporting materials is an effective way to overcome the leakage problem and enhancing their thermal conductivity property. In addition, the capsules could prevent possible interaction between OPCMs with the environment. There are many technologies described the encapsulation of OPCMs which depending on the type of supporting material and chemical properties of the OPCMs used. However, no complete overview of the techniques for encapsulation of OPCMs is available in the open literature. In this paper, we reviewed the techniques used for encapsulation of OPCMs and the method used to characterize the physico-chemical and thermal properties of encapsulated OPCMs. We believed that this review could provide useful information on the various encapsulation methods of OPCMs.
239 citations 239 popularity Top 1% influence Top 1% impulse Top 1% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.solmat.2015.06.039&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Salisu Nasir;
Salisu Nasir
Harvested from ORCID Public Data FileSalisu Nasir in OpenAIRE Mohd Zobir Hussein; Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIRE Zulkarnain Zainal; Nor Azah Yusof; +1 AuthorsZulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Salisu Nasir; Salisu Nasir
Harvested from ORCID Public Data FileSalisu Nasir in OpenAIRE Mohd Zobir Hussein; Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIRE Zulkarnain Zainal; Nor Azah Yusof; Syazwan Afif Mohd Zobir;Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREIn this study, activated carbons (ACs) were produced from oil palm leaves (OPL) and palm kernel shells (PKS) using different concentrations (0%, 11%, and 33%) of H3PO4 as the activating agent. The Brunauer–Emmett–Teller (BET) results indicated that surface area decreases with the decreasing of the concentration of the H3PO4 in the following order: AC from oil palm leaves was (OPLAC-0% H3PO4) < (OPLAC-11% H3PO4) < (OPLAC-33% H3PO4), with the BET surface area values of 37, 760, and 780 m2/g, respectively. Similarly, the PKS-derived AC followed the same trend of (PKSAC-0% H3PO4) < (PKSAC-11% H3PO4) < (PKSAC-33% H3PO4), with the BET surface area values of 3, 52, and 1324 m2/g, respectively. Based on this finding, it was observed that H3PO4 had exhibited an influential role on enhancing the surface properties of the AC. On the contrary, it slightly decreased the graphitic trait of the AC by considering their IG/ID trends, which were generated from the Raman spectral analysis. The energy storage capacity of the AC was further tested using cyclic voltammetry. Three of the samples were found to have high capacitance values of 434 F g−1, 162 F g−1, and 147 F g−1 at 5 mVs−1. The first (434 F g−1) is much higher than the specific capacitance value (343 F g−1) of the only oil palm leaf-derived porous carbon nanoparticles ever reported in the literature.
Access Routesgold 33 citations 33 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/en11123410&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Salisu Nasir;
Salisu Nasir
Harvested from ORCID Public Data FileSalisu Nasir in OpenAIRE Mohd Zobir Hussein; Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIRE Zulkarnain Zainal; Nor Azah Yusof; +1 AuthorsZulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Salisu Nasir; Salisu Nasir
Harvested from ORCID Public Data FileSalisu Nasir in OpenAIRE Mohd Zobir Hussein; Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIRE Zulkarnain Zainal; Nor Azah Yusof; Syazwan Afif Mohd Zobir;Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREIn this study, activated carbons (ACs) were produced from oil palm leaves (OPL) and palm kernel shells (PKS) using different concentrations (0%, 11%, and 33%) of H3PO4 as the activating agent. The Brunauer–Emmett–Teller (BET) results indicated that surface area decreases with the decreasing of the concentration of the H3PO4 in the following order: AC from oil palm leaves was (OPLAC-0% H3PO4) < (OPLAC-11% H3PO4) < (OPLAC-33% H3PO4), with the BET surface area values of 37, 760, and 780 m2/g, respectively. Similarly, the PKS-derived AC followed the same trend of (PKSAC-0% H3PO4) < (PKSAC-11% H3PO4) < (PKSAC-33% H3PO4), with the BET surface area values of 3, 52, and 1324 m2/g, respectively. Based on this finding, it was observed that H3PO4 had exhibited an influential role on enhancing the surface properties of the AC. On the contrary, it slightly decreased the graphitic trait of the AC by considering their IG/ID trends, which were generated from the Raman spectral analysis. The energy storage capacity of the AC was further tested using cyclic voltammetry. Three of the samples were found to have high capacitance values of 434 F g−1, 162 F g−1, and 147 F g−1 at 5 mVs−1. The first (434 F g−1) is much higher than the specific capacitance value (343 F g−1) of the only oil palm leaf-derived porous carbon nanoparticles ever reported in the literature.
Access Routesgold 33 citations 33 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/en11123410&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Rafeadah Rusli; Tumirah Khadiran; Tumirah Khadiran; Mohd Zobir Hussein; +1 Authors
Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRERafeadah Rusli; Tumirah Khadiran; Tumirah Khadiran; Mohd Zobir Hussein;Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREAbstract This work focuses on the preparation of AC (activated carbon) through a physical activation method using peat soil as a precursor, followed by the use of the AC as an inorganic framework for the preparation of SPCM (shape-stabilized phase change material). The SPCM, composed of n-octadecane as the core and AC pores as a framework, was fabricated by a simple impregnation method, with the mass fraction of n-octadecane varying from 10 to 90 wt.%. The AC has a specific surface area of 893 m 2 g −1 and an average pore size of 22 A. The field emission scanning electron microscope images and nitrogen gas adsorption-desorption isotherms shows that the n-octadecane was actually encapsulated into the AC pores. The melting and freezing temperatures of the composite PCM (phase change material) were 30.9 °C and 24.1 °C, respectively, and its corresponding latent heat values were 95.4 Jg −1 and 99.6 Jg −1 , respectively. The composite shows a good thermal reliability, even after 1000 melting/freezing cycles. The present research provided a new SPCM material for thermal energy storage as well as some new insights into the design of composite PCM by tailoring the pore structure of AC derived from peat soil, a natural resource.
Access Routesbronze 56 citations 56 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.energy.2015.01.057&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Rafeadah Rusli; Tumirah Khadiran; Tumirah Khadiran; Mohd Zobir Hussein; +1 Authors
Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRERafeadah Rusli; Tumirah Khadiran; Tumirah Khadiran; Mohd Zobir Hussein;Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREAbstract This work focuses on the preparation of AC (activated carbon) through a physical activation method using peat soil as a precursor, followed by the use of the AC as an inorganic framework for the preparation of SPCM (shape-stabilized phase change material). The SPCM, composed of n-octadecane as the core and AC pores as a framework, was fabricated by a simple impregnation method, with the mass fraction of n-octadecane varying from 10 to 90 wt.%. The AC has a specific surface area of 893 m 2 g −1 and an average pore size of 22 A. The field emission scanning electron microscope images and nitrogen gas adsorption-desorption isotherms shows that the n-octadecane was actually encapsulated into the AC pores. The melting and freezing temperatures of the composite PCM (phase change material) were 30.9 °C and 24.1 °C, respectively, and its corresponding latent heat values were 95.4 Jg −1 and 99.6 Jg −1 , respectively. The composite shows a good thermal reliability, even after 1000 melting/freezing cycles. The present research provided a new SPCM material for thermal energy storage as well as some new insights into the design of composite PCM by tailoring the pore structure of AC derived from peat soil, a natural resource.
Access Routesbronze 56 citations 56 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.energy.2015.01.057&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Muhammad Muhammad Muzakir;
Muhammad Muhammad Muzakir
Harvested from ORCID Public Data FileMuhammad Muhammad Muzakir in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Hong Ngee Lim; Hong Ngee Lim
Harvested from ORCID Public Data FileHong Ngee Lim in OpenAIRE Abdul Halim Abdullah; +2 AuthorsAbdul Halim Abdullah
Harvested from ORCID Public Data FileAbdul Halim Abdullah in OpenAIRE Muhammad Muhammad Muzakir; Muhammad Muhammad Muzakir
Harvested from ORCID Public Data FileMuhammad Muhammad Muzakir in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Hong Ngee Lim; Hong Ngee Lim
Harvested from ORCID Public Data FileHong Ngee Lim in OpenAIRE Abdul Halim Abdullah; Abdul Halim Abdullah
Harvested from ORCID Public Data FileAbdul Halim Abdullah in OpenAIRE Noor Nazihah Bahrudin; Noor Nazihah Bahrudin
Harvested from ORCID Public Data FileNoor Nazihah Bahrudin in OpenAIRE Mahanim Sarif@Mohd Ali; Mahanim Sarif@Mohd Ali
Harvested from ORCID Public Data FileMahanim Sarif@Mohd Ali in OpenAIREIn this paper the synthesis of self-organized Titania nanotubes (TNTs) by a facile potentiostatic anodization in a glycerol-based electrolyte is reported. The optimized TNTs were subsequently reduced through a cathodic reduction process to enhance its capacitive performance. FESEM and XRD were used to characterize the morphology and crystal structure of the synthesized samples. XPS analysis confirmed the reduction of Ti4+ to Ti3+ ions in the reduced Titania nanotubes (R-TNTs). The tube diameter and separation between the tubes were greatly influenced by the applied voltage. TNTs synthesized at voltage of 30 V for 60 min exhibited 86 nm and 1.1 µm of tube diameter and length, respectively and showed high specific capacitance of 0.33 mF cm−2 at current density of 0.02 mA cm−2. After reduction at 5 V for 30 s, the specific capacitance increased by about seven times (2.28 mF cm−2) at 0.5 mA cm−2 and recorded about 86% capacitance retention after 1000 continuous cycling at 0.2 mA cm−2, as compared to TNTs, retained about 61% at 0.01 mA cm−2. The charge transfer resistance drastically reduced from 6.2 Ω for TNTs to 0.55 Ω for R-TNTs, indicating an improvement in the transfer of electrons and ions across the electrode–electrolyte interface.
Access Routesgold 11 citations 11 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/en13112767&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Muhammad Muhammad Muzakir;
Muhammad Muhammad Muzakir
Harvested from ORCID Public Data FileMuhammad Muhammad Muzakir in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Hong Ngee Lim; Hong Ngee Lim
Harvested from ORCID Public Data FileHong Ngee Lim in OpenAIRE Abdul Halim Abdullah; +2 AuthorsAbdul Halim Abdullah
Harvested from ORCID Public Data FileAbdul Halim Abdullah in OpenAIRE Muhammad Muhammad Muzakir; Muhammad Muhammad Muzakir
Harvested from ORCID Public Data FileMuhammad Muhammad Muzakir in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Hong Ngee Lim; Hong Ngee Lim
Harvested from ORCID Public Data FileHong Ngee Lim in OpenAIRE Abdul Halim Abdullah; Abdul Halim Abdullah
Harvested from ORCID Public Data FileAbdul Halim Abdullah in OpenAIRE Noor Nazihah Bahrudin; Noor Nazihah Bahrudin
Harvested from ORCID Public Data FileNoor Nazihah Bahrudin in OpenAIRE Mahanim Sarif@Mohd Ali; Mahanim Sarif@Mohd Ali
Harvested from ORCID Public Data FileMahanim Sarif@Mohd Ali in OpenAIREIn this paper the synthesis of self-organized Titania nanotubes (TNTs) by a facile potentiostatic anodization in a glycerol-based electrolyte is reported. The optimized TNTs were subsequently reduced through a cathodic reduction process to enhance its capacitive performance. FESEM and XRD were used to characterize the morphology and crystal structure of the synthesized samples. XPS analysis confirmed the reduction of Ti4+ to Ti3+ ions in the reduced Titania nanotubes (R-TNTs). The tube diameter and separation between the tubes were greatly influenced by the applied voltage. TNTs synthesized at voltage of 30 V for 60 min exhibited 86 nm and 1.1 µm of tube diameter and length, respectively and showed high specific capacitance of 0.33 mF cm−2 at current density of 0.02 mA cm−2. After reduction at 5 V for 30 s, the specific capacitance increased by about seven times (2.28 mF cm−2) at 0.5 mA cm−2 and recorded about 86% capacitance retention after 1000 continuous cycling at 0.2 mA cm−2, as compared to TNTs, retained about 61% at 0.01 mA cm−2. The charge transfer resistance drastically reduced from 6.2 Ω for TNTs to 0.55 Ω for R-TNTs, indicating an improvement in the transfer of electrons and ions across the electrode–electrolyte interface.
Access Routesgold 11 citations 11 popularity Top 10% influence Average impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3390/en13112767&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Seenivasagam, Sivasangar; Yap, Taufiq Yun Hin;
Seenivasagam, Sivasangar
Harvested from ORCID Public Data FileSeenivasagam, Sivasangar in OpenAIRE Zainal, Zulkarnain; Kitagawa, Kuniyuki;Zainal, Zulkarnain
Harvested from ORCID Public Data FileZainal, Zulkarnain in OpenAIREUtilization of lignocellulosic material via thermo-chemical processes has received huge attention from both biofuel and biochemical sectors. Intensive research has been embarked to study the thermal behavior and the decomposition patterns of the potential feedstock materials. Palm plantation waste, empty palm fruit's bunches (EFB) are used as a biomass source in this experiment. A comparison study was made using basic lignocellulosic model compounds such as hemicellulose, cellulose, and lignin. The thermal stability of each compound in both oxygen and nitrogen environments was investigated. The degradation of model compounds were categorized into primary (200–400 °C) and secondary (500–800 °C) stages based on structural collapse and liquid/solid decompositions. Besides, the influence of inorganic substances in EFB degradation was reported whereby the mineral contents act as a catalyst by enhancing the decomposition at lower temperatures compared to demineralized EFB. In addition, the product gas evolutions from the gasification reaction of the components were analyzed using online mass spectrometer. The gas production patterns indicate the nature of the compounds in terms of thermal stability, functional group cleavages and catalytic reactions.
Access Routesbronze 26 citations 26 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.ijhydene.2013.09.083&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Seenivasagam, Sivasangar; Yap, Taufiq Yun Hin;
Seenivasagam, Sivasangar
Harvested from ORCID Public Data FileSeenivasagam, Sivasangar in OpenAIRE Zainal, Zulkarnain; Kitagawa, Kuniyuki;Zainal, Zulkarnain
Harvested from ORCID Public Data FileZainal, Zulkarnain in OpenAIREUtilization of lignocellulosic material via thermo-chemical processes has received huge attention from both biofuel and biochemical sectors. Intensive research has been embarked to study the thermal behavior and the decomposition patterns of the potential feedstock materials. Palm plantation waste, empty palm fruit's bunches (EFB) are used as a biomass source in this experiment. A comparison study was made using basic lignocellulosic model compounds such as hemicellulose, cellulose, and lignin. The thermal stability of each compound in both oxygen and nitrogen environments was investigated. The degradation of model compounds were categorized into primary (200–400 °C) and secondary (500–800 °C) stages based on structural collapse and liquid/solid decompositions. Besides, the influence of inorganic substances in EFB degradation was reported whereby the mineral contents act as a catalyst by enhancing the decomposition at lower temperatures compared to demineralized EFB. In addition, the product gas evolutions from the gasification reaction of the components were analyzed using online mass spectrometer. The gas production patterns indicate the nature of the compounds in terms of thermal stability, functional group cleavages and catalytic reactions.
Access Routesbronze 26 citations 26 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.ijhydene.2013.09.083&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Anuar Kassim; Ali Jimale Ali; Zulkarnain Zainal;
Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Mohd Zobir Hussein; Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIREAbstract Tin selenide semiconductor films have been potentiostatically deposited onto a tin substrate from an aqueous solution containing SnCl 2 and Na 2 SeO 3 . Deposition at various concentrations was attempted in order to investigate the effect of the electrolytes concentration on the film properties and to determine the optimum bath composition. The structure, morphology and photoactivity of the films were studied using X-ray diffraction, scanning electron microscopy and linear sweep photovoltammetry techniques. The semiconducting property of the deposit is strongly affected by the electrolytes concentration. The optimum bath composition was found to be 0.010 M for SnCl 2 and 0.015 M for Na 2 SeO 3 .
43 citations 43 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/s0927-0248(02)00392-6&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Anuar Kassim; Ali Jimale Ali; Zulkarnain Zainal;
Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Mohd Zobir Hussein; Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIREAbstract Tin selenide semiconductor films have been potentiostatically deposited onto a tin substrate from an aqueous solution containing SnCl 2 and Na 2 SeO 3 . Deposition at various concentrations was attempted in order to investigate the effect of the electrolytes concentration on the film properties and to determine the optimum bath composition. The structure, morphology and photoactivity of the films were studied using X-ray diffraction, scanning electron microscopy and linear sweep photovoltammetry techniques. The semiconducting property of the deposit is strongly affected by the electrolytes concentration. The optimum bath composition was found to be 0.010 M for SnCl 2 and 0.015 M for Na 2 SeO 3 .
43 citations 43 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/s0927-0248(02)00392-6&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Anuar Kassim; Mohd Zobir Hussein; Saravanan Nagalingam; Wan Mahmood Mat Yunus; +1 Authors
Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIREAnuar Kassim; Mohd Zobir Hussein; Saravanan Nagalingam; Wan Mahmood Mat Yunus;Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREAbstract Tin selenide thin films were deposited potentiostatically from an unstirred aqueous solution containing Sn-EDTA and Na 2 SeO 3 onto indium-doped tin oxide glass substrates. The difference in the structural and compositional properties of the film before and after heat treatment in a nitrogen atmosphere were studied. The as-grown and treated films were characterised using various techniques such as X-ray diffractometry, scanning electron microscopy and energy-dispersive X-ray analysis. Photoactivity of the samples was studied using linear sweep voltammetry. An annealing temperature of 150°C was found to be the optimum temperature.
56 citations 56 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.solmat.2003.11.004&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Anuar Kassim; Mohd Zobir Hussein; Saravanan Nagalingam; Wan Mahmood Mat Yunus; +1 Authors
Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIREAnuar Kassim; Mohd Zobir Hussein; Saravanan Nagalingam; Wan Mahmood Mat Yunus;Mohd Zobir Hussein
Harvested from ORCID Public Data FileMohd Zobir Hussein in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREAbstract Tin selenide thin films were deposited potentiostatically from an unstirred aqueous solution containing Sn-EDTA and Na 2 SeO 3 onto indium-doped tin oxide glass substrates. The difference in the structural and compositional properties of the film before and after heat treatment in a nitrogen atmosphere were studied. The as-grown and treated films were characterised using various techniques such as X-ray diffractometry, scanning electron microscopy and energy-dispersive X-ray analysis. Photoactivity of the samples was studied using linear sweep voltammetry. An annealing temperature of 150°C was found to be the optimum temperature.
56 citations 56 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.solmat.2003.11.004&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Zulkarnain Zainal; Rafeadah Rusli;
Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Tumirah Khadiran; Tumirah Khadiran; +1 AuthorsTumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRE Zulkarnain Zainal; Rafeadah Rusli;Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Tumirah Khadiran; Tumirah Khadiran; Mohd Zobir Hussein;Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIREThis study is focused on the preparation and characterisation of n-nonadecane-vinyl copolymer shell nanocapsules for thermal energy storage medium. The n-nonadecane nanocapsules were prepared by a one-step miniemulsion in situ polymerisation method. n-Nonadecane was used as a core while styrene (St) and methylmethacrylate (MMA) was used as a vinyl copolymer shell. The Fourier transform infrared results confirmed that n-nonadecane nanocapsules were successfully synthesised. Morphological characteristic analysis indicates that these nnonadecane nanocapsules that were prepared using St/MMA (4:1) have a spherical shape and a narrow particle size distribution, with an average diameter of 160±11 nm. The maximum encapsulation ratio for n-nonadecane nanocapsules is 45.8 wt%. The DSC result of pure n-nonadecane and n-nonadecane nanocapsules exhibits two different peaks, which are related to their carbon numbers. The temperature and latent heat of melting and freezing of the n-nonadecane nanocapsules were determined to be 33.1 °C, 76.9 J/g and 30.2 °C, 82.0 J/g, respectively. Moreover, n-nonadecane nanocapsules exhibit good thermal and chemical stability, even after 1000 cycles of a thermal cycling test. Based on all of the results, it can be concluded that the n-nonadecane nanocapsules exhibit better energy storage and have good potential for buildings, textiles or other applications.
13 citations 13 popularity Top 10% influence Average impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s13233-015-3088-z&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - Zulkarnain Zainal; Rafeadah Rusli;
Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Tumirah Khadiran; Tumirah Khadiran; +1 AuthorsTumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIRE Zulkarnain Zainal; Rafeadah Rusli;Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIRE Tumirah Khadiran; Tumirah Khadiran; Mohd Zobir Hussein;Tumirah Khadiran
Harvested from ORCID Public Data FileTumirah Khadiran in OpenAIREThis study is focused on the preparation and characterisation of n-nonadecane-vinyl copolymer shell nanocapsules for thermal energy storage medium. The n-nonadecane nanocapsules were prepared by a one-step miniemulsion in situ polymerisation method. n-Nonadecane was used as a core while styrene (St) and methylmethacrylate (MMA) was used as a vinyl copolymer shell. The Fourier transform infrared results confirmed that n-nonadecane nanocapsules were successfully synthesised. Morphological characteristic analysis indicates that these nnonadecane nanocapsules that were prepared using St/MMA (4:1) have a spherical shape and a narrow particle size distribution, with an average diameter of 160±11 nm. The maximum encapsulation ratio for n-nonadecane nanocapsules is 45.8 wt%. The DSC result of pure n-nonadecane and n-nonadecane nanocapsules exhibits two different peaks, which are related to their carbon numbers. The temperature and latent heat of melting and freezing of the n-nonadecane nanocapsules were determined to be 33.1 °C, 76.9 J/g and 30.2 °C, 82.0 J/g, respectively. Moreover, n-nonadecane nanocapsules exhibit good thermal and chemical stability, even after 1000 cycles of a thermal cycling test. Based on all of the results, it can be concluded that the n-nonadecane nanocapsules exhibit better energy storage and have good potential for buildings, textiles or other applications.
13 citations 13 popularity Top 10% influence Average impulse Average Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s13233-015-3088-z&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - A. Salmiaton;
A. Salmiaton
Harvested from ORCID Public Data FileA. Salmiaton in OpenAIRE S. Sivasangar; Y. H. Taufiq-Yap; Y. H. Taufiq-Yap; +1 AuthorsS. Sivasangar
Harvested from ORCID Public Data FileS. Sivasangar in OpenAIRE A. Salmiaton; A. Salmiaton
Harvested from ORCID Public Data FileA. Salmiaton in OpenAIRE S. Sivasangar; Y. H. Taufiq-Yap; Y. H. Taufiq-Yap;S. Sivasangar
Harvested from ORCID Public Data FileS. Sivasangar in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREAbstract Empty fruit bunches (EFBs) from the palm plantation sector are abundant agricultural waste products in Malaysia. Supercritical water gasification (SCWG) is a prominent way to convert high-moisture-content biomass such as EFBs into valuable end products. This investigation is focused on EFB conversion into hydrogen-rich products using SCWG (temperature = 380 °C and pressure ≈ 240 bar). Lignocellulosic model compounds (xylan, cellulose, and lignin) were used to study the degradation patterns and gas compositions under similar reaction conditions. The effect of the EFB/water ratio and the SCWG reaction time on the composition of the product gas was examined. Carbon gasification does not improve with increasing EFB/water ratio as well as with increasing reaction time caused by the thermally stable tar formation during reaction. The hydrogen concentration was found to be increased with reaction time along with raising the EFB/water ratio to 0.3 g (3.75 wt%). In addition, the possibility of using palm oil mill effluent as a reaction medium in comparison to deionized water was analyzed.
Access Routesbronze 60 citations 60 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.fuel.2014.11.073&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu - A. Salmiaton;
A. Salmiaton
Harvested from ORCID Public Data FileA. Salmiaton in OpenAIRE S. Sivasangar; Y. H. Taufiq-Yap; Y. H. Taufiq-Yap; +1 AuthorsS. Sivasangar
Harvested from ORCID Public Data FileS. Sivasangar in OpenAIRE A. Salmiaton; A. Salmiaton
Harvested from ORCID Public Data FileA. Salmiaton in OpenAIRE S. Sivasangar; Y. H. Taufiq-Yap; Y. H. Taufiq-Yap;S. Sivasangar
Harvested from ORCID Public Data FileS. Sivasangar in OpenAIRE Zulkarnain Zainal; Zulkarnain Zainal
Harvested from ORCID Public Data FileZulkarnain Zainal in OpenAIREAbstract Empty fruit bunches (EFBs) from the palm plantation sector are abundant agricultural waste products in Malaysia. Supercritical water gasification (SCWG) is a prominent way to convert high-moisture-content biomass such as EFBs into valuable end products. This investigation is focused on EFB conversion into hydrogen-rich products using SCWG (temperature = 380 °C and pressure ≈ 240 bar). Lignocellulosic model compounds (xylan, cellulose, and lignin) were used to study the degradation patterns and gas compositions under similar reaction conditions. The effect of the EFB/water ratio and the SCWG reaction time on the composition of the product gas was examined. Carbon gasification does not improve with increasing EFB/water ratio as well as with increasing reaction time caused by the thermally stable tar formation during reaction. The hydrogen concentration was found to be increased with reaction time along with raising the EFB/water ratio to 0.3 g (3.75 wt%). In addition, the possibility of using palm oil mill effluent as a reaction medium in comparison to deionized water was analyzed.
Access Routesbronze 60 citations 60 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.<script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.fuel.2014.11.073&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu
- 1
- 2
