Onion-Ring-like Carbon and Nitrogen from ZIF-8 on TiO2/Fe2O3 Nanostructure for Overall Electrochemical Water Splitting
| Autor: | S.V. Prabhakar Vattikuti, Nanda Kumar Reddy Nallabala, Jaesool Shim, K.C. Devarayapalli, Nam Nguyen Dang, Thi Hong Nhung Nguyen |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Nanostructure Oxygen evolution chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry Electrocatalyst 01 natural sciences 0104 chemical sciences Catalysis Adsorption Chemical engineering chemistry Water splitting General Materials Science Physical and Theoretical Chemistry 0210 nano-technology Carbon |
| Zdroj: | The Journal of Physical Chemistry Letters. 12:5909-5918 |
| ISSN: | 1948-7185 |
| DOI: | 10.1021/acs.jpclett.1c01497 |
| Popis: | The carbon and nitrogen derived from ZIF-8 embedded in TiO2/Fe2O3 (i.e., C,N-ZIF/TiFe) nanostructures exhibit superior electrocatalytic performance toward oxygen evolution reactions (OER), hydrogen evolution reactions (HER), and overall H2O splitting. The results showed that the C,N-ZIF/TiFe nanostructure was the best catalyst in comparison to ZIF/TiFe and TiFe nanostructures toward HER and OER. These results revealed that combining the highly active carbon and nitrogen from ZIF-8 with a TiO2/Fe2O3 semiconductor enriched the overall H2O splitting. A possible OER mechanism is attributed to some groups that support the surface active site of the catalyst and adsorbent intermediate species. Finally, this inexpensive electrocatalyst was synthesized without noble metals and showed superior electrocatalytic activity and great stability with the potential to achieve ground-breaking and novel applications in fuel cells. |
| Databáze: | OpenAIRE |
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