Rehan Anwar
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Rehan Anwar has a total of 8 co-authors. Here are the top co-authors by number of shared publications:
- M. Daarain Haider
Energy Storage and Conservation Lab, USPCAS-E, National University of Sciences and Technology, Islamabad 44000, Pakistan
2 shared publications - Naseem Iqbal
US-Pakistan Centre for Advanced Studies in Energy, National University of Sciences and Technology (NUST), H-12, Islamabad 44000, Pakistan
2 shared publications - Saadia Hanif
U.S.-Pakistan Center for Advanced Studies in Energy (USPCASE), National University of Sciences and Technology, Islamabad 44000, Pakistan
2 shared publications - Syed Aun M. Rizvi
Energy Storage and Conservation Lab, USPCAS-E, National University of Sciences and Technology, Islamabad 44000, Pakistan
2 shared publications - Tayyaba Noor
School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan
2 shared publications - Arunachala Mada Kannan
Arizona State University
1 shared publication
Latest Publications
- Open Access
MOF-Derived CuPt/NC Electrocatalyst for Oxygen Reduction Reaction
Metal-organic frameworks (MOFs) have been at the center stage of material science in the recent past because of their structural properties and wide applications in catalysis. MOFs have also been used as hard templates for the preparation of catalysts. In this study, highly active CuPt/NC electrocatalyst was synthesized by pyrolyzing Cu-tpa MOF along with Pt precursor under flowing Ar-H2 atmosphere. The catalyst was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray powder diffraction (XRD). Rotating disk electrode study was performed to determine the oxygen reduction reaction (ORR) activity for CuPt/NC in 0.1 M HClO4 at different revolutions per minute (400, 800, 1200, and 1600) and it was also compared with commercial Pt/C catalyst. Further the ORR performance was evaluated by K-L plots and Tafel slope. CuPt/NC shows excellent ORR performance with onset potential of 0.9 V (vs. RHE), which is comparable with commercial Pt/C. The ORR activity of CuPt/NC is demonstrated as an efficient electrocatalyst for fuel cell.
Open AccessMOF-Derived CuPt/NC Electrocatalyst for Oxygen Reduction Reaction
Metal-organic frameworks (MOFs) have been at the center stage of material science in the recent past because of their structural properties and wide applications in catalysis. MOFs have also been used as hard templates for the preparation of catalysts. In this study, highly active CuPt/NC electrocatalyst was synthesized by pyrolyzing Cu-tpa MOF along with Pt precursor under flowing Ar-H2 atmosphere. The catalyst was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and X-ray powder diffraction (XRD). Rotating disk electrode study was performed to determine the oxygen reduction reaction (ORR) activity for CuPt/NC in 0.1 M HClO4 at different revolutions per minute (400, 800, 1200, and 1600) and it was also compared with commercial Pt/C catalyst. Further the ORR performance was evaluated by K-L plots and Tafel slope. CuPt/NC shows excellent ORR performance with onset potential of 0.9 V (vs. RHE), which is comparable with commercial Pt/C. The ORR activity of CuPt/NC is demonstrated as an efficient electrocatalyst for fuel cell.
- 25 June 2020
- Published by ASME International in Journal of Electrochemical Energy Conversion and Storage
- Vol. 18 (2) , 1-16
ZIF-67 Derived Cu-Doped Electrocatalyst for Oxygen Reduction Reaction
In present study, catalytic activity of copper loaded cobalt based MOF (ZIF-67) composites were studied for their electrochemical oxidation reduction reaction. The Cu-ZIF-67 composite was prepared by solvothermal method. After pyrolysis under Argon atmosphere at 700°C, the composite was characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR). The electrochemical activity of the composites was tested for oxidation reduction reaction (ORR) in 0.1M alkaline media using three electrode system by Cyclic Voltammetry (CV), Tafel plots and electrochemical impedance spectroscopy (EIS). At 50mV s−1 scan rate, the onset potential for composite was 0.91 V with current density of 10.8 mA cm−2 which is much comparable to commercial Pt/C for onset potential, but composite have higher current density than Pt/C i.e. 3.8mA cm−2. The effect can be attributed to higher activity of ZIF-67 with synergistic effect of Cu, towards increased current density.
- 25 June 2020
- Published by ASME International in Journal of Electrochemical Energy Conversion and Storage
- Vol. 18 (2) , 1-16
ZIF-67 Derived Cu-Doped Electrocatalyst for Oxygen Reduction Reaction
In present study, catalytic activity of copper loaded cobalt based MOF (ZIF-67) composites were studied for their electrochemical oxidation reduction reaction. The Cu-ZIF-67 composite was prepared by solvothermal method. After pyrolysis under Argon atmosphere at 700°C, the composite was characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR). The electrochemical activity of the composites was tested for oxidation reduction reaction (ORR) in 0.1M alkaline media using three electrode system by Cyclic Voltammetry (CV), Tafel plots and electrochemical impedance spectroscopy (EIS). At 50mV s−1 scan rate, the onset potential for composite was 0.91 V with current density of 10.8 mA cm−2 which is much comparable to commercial Pt/C for onset potential, but composite have higher current density than Pt/C i.e. 3.8mA cm−2. The effect can be attributed to higher activity of ZIF-67 with synergistic effect of Cu, towards increased current density.