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Highly active, durable and pH-universal hybrid oxide nanocrystals for efficient oxygen evolution

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Abstract

The development of an active, durable, and low-cost catalyst remains hitherto a grand challenge in energy conversion technologies. Herein, hybrid Ptx–NiMnO3 nanocrystals (NCs) (x = 0.1, 0.5, and 1.0 mM) were synthesized by a modified citrate-gel approach and utilized as efficient catalysts towards the oxygen evolution reaction (OER). The results showed that the size of Ptx–NiMnO3 NCs decreases with increasing the initial concentration of Pt. Meanwhile, the OER activity and durability of the as-synthesized Pt–NiMnO3 under different pH conditions are found to be Pt-content-dependent. Particularly, Pt1–NiMnO3 showed superior OER efficiency relative to its counterparts Pt0.5–NiMnO3, Pt0.1–NiMnO3, NiMnO3, and commercial Pt/C at different pH values, ascribed to the size, morphology, and composition effects as confirmed via XRD, XPS and electrochemical characterization.

Graphical abstract: Highly active, durable and pH-universal hybrid oxide nanocrystals for efficient oxygen evolution

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Publication details

The article was received on 24 Feb 2017, accepted on 08 Apr 2017 and first published on 10 Apr 2017


Article type: Paper
DOI: 10.1039/C7SE00111H
Citation: Sustainable Energy Fuels, 2017, Advance Article
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    Highly active, durable and pH-universal hybrid oxide nanocrystals for efficient oxygen evolution

    Y. H. Ahmad, K. A. Eid, S. Y. AlQaradawi and N. K. Allam, Sustainable Energy Fuels, 2017, Advance Article , DOI: 10.1039/C7SE00111H

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