A Ni-loaded, metal-organic framework-graphene composite as a precursor for in situ electrochemical deposition of a highly active and durable water oxidation nanocatalyst
| Autor: | Mohamed H. Hassan, Mohamed H. Alkordi, Worood A. Elmehelmey, Abdou Hassanien, Ahmed B. Soliman, Stavros Karakalos, Arwa A. Abugable, Mady Elbahri |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
FACILE SYNTHESIS ELECTRODES NICKEL Nanoparticle 010402 general chemistry Electrocatalyst Electrochemistry 01 natural sciences Catalysis law.invention CARBON RAMAN law Materials Chemistry SPECTRA ta215 ELECTROCATALYSTS SPECTROSCOPY 010405 organic chemistry Graphene Metals and Alloys Oxygen evolution General Chemistry OXYGEN-EVOLUTION 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Chemical engineering Ceramics and Composites Metal-organic framework POLYMERS Pyrolysis |
| Zdroj: | Chemical communications (Cambridge, England). 55(1) |
| ISSN: | 1364-548X |
| Popis: | A novel approach to construct a highly active and durable Ni(OH)2 nanoparticle/graphene hybrid electrocatalyst for the oxygen-evolution reaction (OER) is reported. This approach utilized the Ni-loaded, graphene-supported, Zr–carboxylate metal–organic framework (UiO-66-NH2-Ni@G) as a sacrificial pre-catalyst to engender the true catalyst in an electrochemical surface restructuring process. This has resulted in an exceptionally active (η10 = 0.38 V vs. RHE) and highly durable OER catalyst, and can potentially be employed as a viable facile alternative to the commonly utilized pyrolysis of MOFs, to access heterogenous catalysts for demanding electrochemically-promoted reactions. |
| Databáze: | OpenAIRE |
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