MOF-Derived CuPt/NC Electrocatalyst for Oxygen Reduction Reaction
| Autor: | Neelam Zaman, Syed Aun M. Rizvi, Tayyaba Noor, Arunachala Mada Kannan, Daarain Haider, Xuan Shi, Rehan Anwar, Naseem Iqbal, Saadia Hanif |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Scanning electron microscope chemistry.chemical_element 02 engineering and technology 010402 general chemistry Electrocatalyst lcsh:Chemical technology 01 natural sciences Catalysis lcsh:Chemistry CuPt/NC X-ray photoelectron spectroscopy lcsh:TP1-1185 platinum Physical and Theoretical Chemistry Rotating disk electrode Cu-tpa MOF Tafel equation 021001 nanoscience & nanotechnology PEMFC ORR electrocatalyst 0104 chemical sciences chemistry Chemical engineering lcsh:QD1-999 0210 nano-technology Platinum Powder diffraction |
| Zdroj: | Catalysts, Vol 10, Iss 799, p 799 (2020) Catalysts Volume 10 Issue 7 |
| ISSN: | 2073-4344 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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