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

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-...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2019, Vol.55 (1), p.31-34
Main Authors: Hassan, Mohamed H, Soliman, Ahmed B, Elmehelmey, Worood A, Abugable, Arwa A, Karakalos, Stavros G, Elbahri, Mady, Hassanien, Abdou, Alkordi, Mohamed H
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Graphene
Metal-organic frameworks
Nanoparticles
Nickel
Oxidation
Pyrolysis
Zirconium
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Summary: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.
ISSN:1359-7345
1364-548X
DOI:10.1039/c8cc07120a