Phase transformation fabrication of a Cu2S nanoplate as an efficient catalyst for water oxidation with glycine

Inorganic Chemistry
Li AnPinxian Xi

Abstract

The synthesis of semiconducting nanoplates (NPs) with defined crystal phase is of particular interest, especially their intriguing properties related to the size, shape, and crystal phase. Herein, a liquid-state transformation process from hexagonal-phase CuS NPs is employed to fabricate the cubic-phase Cu2S NPs. The CuS NPs were converted into Cu2S NPs but maintained the morphology. The Cu2S NPs exhibit better oxygen evolution reaction (OER) activity than CuS NPs. Furthermore, the OER activity of Cu2S NPs can be improved by the addition of a glycine (Gly) solution. The Cu2S NPs with Gly in a phosphate buffer solution exhibit excellent OER activity and durability, which approaches that of the best known commercial Ir/C (20%) nanocatalyst. In this work, a good strategy for fabricating a noble-metal-free OER catalyst has been proposed, which could provide insight into developing new water oxidation catalysts with high activity.

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Citations

Dec 23, 2016·ACS Applied Materials & Interfaces·Ali HanPingwu Du
Apr 11, 2017·Chemical Reviews·Claudia CoughlanKevin M Ryan
Jul 25, 2015·Chemical Communications : Chem Comm·Yixuan ZhouYadong Li
Sep 5, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Lige LiuHaizheng Zhong
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May 29, 2021·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Shiyan WangJinlan Wang

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