19November2018

Nano-Micro Letters

Nanostructured Ternary Metal Tungstate-based Photocatalysts for Environmental Purification and Solar Water Splitting: A Review

Jun Ke2, M. Adnan Younis1, Yan Kong1, Hongru Zhou2, Jie Liu3, *, Lecheng Lei1, Yang Hou1, *

Abstract
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Nano-Micro Lett. (2018) 10: 69

First Online: 2 September 2018 (Review)

DOI:10.1007/s40820-018-0222-4

*Corresponding author. E-mail: yhou@zju.edu.cn ; liujiedut@hotmail.com

 

Abstract

 


Toc

Visible-light-responsive ternary metal tungstate (MWO4) photocatalysts are being increasingly investigated for energy conversion and environmental purification applications owing to their striking features, including low cost, eco-friendliness, and high stability under acidic and oxidative conditions. However, rapid recombination of photoinduced electron-hole pairs and a narrow light response range to the solar spectrum lead to low photocatalytic activity of MWO4-based materials, thus significantly hampering their wide usage in practice. To enable their widespread practical usage, significant efforts have been devoted, by developing new concepts and innovative strategies. In this review, we aim to provide an integrated overview of the fundamentals and recent progress of MWO4-based photocatalysts. Furthermore, different strategies, including morphological control, surface modification, heteroatom doping, and heterojunction fabrication, which are employed to promote the photocatalytic activities of MWO4-based materials, are systematically summarized and discussed. Finally, existing challenges and a future perspective are also provided to shed light on the development of highly efficient MWO4-based photocatalysts.


 

Keywords

Ternary metal tungstates; Micro- and nanostructures; Photocatalysis; Environmental purification; Water splitting

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