Enhanced Photoelectrocatalytic Activity of BiOI Nanoplate-Zinc Oxide Nanorod p-n Heterojunction

Chemistry : a European Journal
Pan-Yong KuangShi-Zhang Qiao

Abstract

The development of highly efficient and robust photocatalysts has attracted great attention for solving the global energy crisis and environmental problems. Herein, we describe the synthesis of a p-n heterostructured photocatalyst, consisting of ZnO nanorod arrays (NRAs) decorated with BiOI nanoplates (NPs), by a facile solvothermal method. The product thus obtained shows high photoelectrochemical water splitting performance and enhanced photoelectrocatalytic activity for pollutant degradation under visible light irradiation. The p-type BiOI NPs, with a narrow band gap, not only act as a sensitizer to absorb visible light and promote electron transfer to the n-type ZnO NRAs, but also increase the contact area with organic pollutants. Meanwhile, ZnO NRAs provide a fast electron-transfer channel, thus resulting in efficient separation of photoinduced electron-hole pairs. Such a p-n heterojunction nanocomposite could serve as a novel and promising catalyst in energy and environmental applications.

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Citations

Oct 5, 2016·ACS Applied Materials & Interfaces·Yongchao HuangYexiang Tong
Mar 31, 2018·Beilstein Journal of Nanotechnology·Mengyuan ZhangRiping Liu
Nov 22, 2018·Journal of Colloid and Interface Science·Hua ChenChuanjia Jiang

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