Dual-layer cocatalysts of Co-Pi and Ni(OH)2 on BiVO4 photoanodes for efficient water oxidation

IF 1.4 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Chemistry Letters Pub Date : 2024-05-16 DOI:10.1093/chemle/upae096

Yu Zhang, Peng Guo, Yonghua Tang, Hongxing Li, R. Mo

引用次数: 0

Abstract

Slow oxygen evolution kinetics and severe corrosion limit the further application of BiVO4 photoelectrodes in photoelectrochemical water splitting. Here, BiVO4/Co-Pi/Ni(OH)2 photoanodes were synthetized aiming at improving its photoelectric conversion efficiency and stability. Compared with pure BiVO4 photoanode, the BiVO4/Co-Pi/Ni(OH)2 photoanode enhanced the photocurrent from 1.1 mA/cm2 to 4.5 mA/cm2 at 1.23 V versus reversible hydrogen electrode. In addition, Ni(OH)2 acted as a corrosion protection layer on the surface of the photoanode, allowing the BiVO4/Co-Pi/Ni(OH)2 photoanode to exhibit excellent stability.

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BiVO4 光阳极上的 Co-Pi 和 Ni(OH)2双层协同催化剂用于高效水氧化

缓慢的氧进化动力学和严重的腐蚀限制了 BiVO4 光电极在光电化学水分离中的进一步应用。在此，我们合成了 BiVO4/Co-Pi/Ni(OH)2 光阳极，旨在提高其光电转换效率和稳定性。与纯 BiVO4 光阳极相比，BiVO4/Co-Pi/Ni(OH)2 光阳极在 1.23 V 电压下对可逆氢电极的光电流从 1.1 mA/cm2 提高到 4.5 mA/cm2。此外，Ni(OH)2 在光阳极表面起到了腐蚀保护层的作用，使 BiVO4/Co-Pi/Ni(OH)2 光阳极表现出卓越的稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemistry Letters 化学-化学综合

CiteScore

3.00

自引率

6.20%

发文量

260

审稿时长

1.2 months

期刊介绍： Chemistry Letters covers the following topics: -Organic Chemistry- Physical Chemistry- Inorganic Chemistry- Analytical Chemistry- Materials Chemistry- Polymer Chemistry- Supramolecular Chemistry- Organometallic Chemistry- Coordination Chemistry- Biomolecular Chemistry- Natural Products and Medicinal Chemistry- Electrochemistry