Reyhaneh Fazel | Isfahan University of Technology (original) (raw)
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Papers by Reyhaneh Fazel
Materials Today Energy, 2020
Journal of Energy Storage, 2020
In this study, a quite simple method has been represented for the fabrication of polymeric crossl... more In this study, a quite simple method has been represented for the fabrication of polymeric crosslinked graphene nanocomposite and examined for supercapacitance properties. Since most of the azo dyes display the conjugated structures, their contribution to enhance the conductivity and capacitance of carbon containing compounds such as graphene could be an interesting area. Therefore, in the present work, chrysoidine (CHRYS) was polymerized in the presence of graphene oxide (GO) in which the produced polychrysoidine (PCHRYS) acted as a cross linker for GO nanosheets. The optimized components ratio of GO:PCHRYS forms the efficient porous graphene oxidepolychrysoidine (GO-PCHRYS) nanocomposite which easily stores charge and represents a rather high specific capacitance of 715.3 F g −1 at the current density of 0.5 A g −1. The electrode stability was determined after 10000 cycles via comparing initial and final capacitance and the results indicated that 89.8% of the initial capacitance had been maintained .
International Journal of Hydrogen Energy, 2019
oxide is synthesized by oxidative diazonium reaction. The prepared nanocomposite efficiently redu... more oxide is synthesized by oxidative diazonium reaction. The prepared nanocomposite efficiently reduces CO 2 to methanol. Histamine stabilizes CO 2 on the electrode surface for the optimized reduction. A quite low applied potential is required for CO 2 electrolysis.
Journal of Environmental Chemical Engineering, 2019
In this research, an electrochemical system, based on copper nanofoam accompanied by 1-butyl-3-me... more In this research, an electrochemical system, based on copper nanofoam accompanied by 1-butyl-3-methyl-imidazolium bromide (BMIMB) as the homogeneous co-catalyst for the electrochemical conversion of CO 2 at ambient pressure and temperature was developed. Although, there have been some efforts for utilization of copper nanofoam or imidazolium-based catalysts toward the electro-reduction of CO 2 , evaluation of both catalysts to take advantage of the potential synergic effect of their combination would be an interesting aspect. The electroreduction of CO 2 in a CO 2 saturated 0.1 M KHCO 3 electrolyte was optimized based on the highest CO 2 conversion efficiency in various conditions. The results show that the copper nanoporous foam, deposited for 45 s with the contribution of 40 mM BMIMB at-1.6 V vs. Ag/ AgCl would effectively reduce CO 2 and demonstrate a high CO 2 faradaic efficiency i.e. more than 46% improvement, compared to similar previously reported experiment. The results confirm the applicability of this experiment as a developed method for efficient CO 2 reduction. not only a quite high potential of −1.9 V vs NHE [9] but also an overpotential which is strongly dependent on the medium and electrode [10-14]. Recently, many researchers have vigorously inspected the
Journal of Pharmaceutical and Biomedical Analysis
Materials Today Energy, 2020
Journal of Energy Storage, 2020
In this study, a quite simple method has been represented for the fabrication of polymeric crossl... more In this study, a quite simple method has been represented for the fabrication of polymeric crosslinked graphene nanocomposite and examined for supercapacitance properties. Since most of the azo dyes display the conjugated structures, their contribution to enhance the conductivity and capacitance of carbon containing compounds such as graphene could be an interesting area. Therefore, in the present work, chrysoidine (CHRYS) was polymerized in the presence of graphene oxide (GO) in which the produced polychrysoidine (PCHRYS) acted as a cross linker for GO nanosheets. The optimized components ratio of GO:PCHRYS forms the efficient porous graphene oxidepolychrysoidine (GO-PCHRYS) nanocomposite which easily stores charge and represents a rather high specific capacitance of 715.3 F g −1 at the current density of 0.5 A g −1. The electrode stability was determined after 10000 cycles via comparing initial and final capacitance and the results indicated that 89.8% of the initial capacitance had been maintained .
International Journal of Hydrogen Energy, 2019
oxide is synthesized by oxidative diazonium reaction. The prepared nanocomposite efficiently redu... more oxide is synthesized by oxidative diazonium reaction. The prepared nanocomposite efficiently reduces CO 2 to methanol. Histamine stabilizes CO 2 on the electrode surface for the optimized reduction. A quite low applied potential is required for CO 2 electrolysis.
Journal of Environmental Chemical Engineering, 2019
In this research, an electrochemical system, based on copper nanofoam accompanied by 1-butyl-3-me... more In this research, an electrochemical system, based on copper nanofoam accompanied by 1-butyl-3-methyl-imidazolium bromide (BMIMB) as the homogeneous co-catalyst for the electrochemical conversion of CO 2 at ambient pressure and temperature was developed. Although, there have been some efforts for utilization of copper nanofoam or imidazolium-based catalysts toward the electro-reduction of CO 2 , evaluation of both catalysts to take advantage of the potential synergic effect of their combination would be an interesting aspect. The electroreduction of CO 2 in a CO 2 saturated 0.1 M KHCO 3 electrolyte was optimized based on the highest CO 2 conversion efficiency in various conditions. The results show that the copper nanoporous foam, deposited for 45 s with the contribution of 40 mM BMIMB at-1.6 V vs. Ag/ AgCl would effectively reduce CO 2 and demonstrate a high CO 2 faradaic efficiency i.e. more than 46% improvement, compared to similar previously reported experiment. The results confirm the applicability of this experiment as a developed method for efficient CO 2 reduction. not only a quite high potential of −1.9 V vs NHE [9] but also an overpotential which is strongly dependent on the medium and electrode [10-14]. Recently, many researchers have vigorously inspected the
Journal of Pharmaceutical and Biomedical Analysis