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Crystals 2016, 6(11), 148;

A Review on the Fabrication of Hierarchical ZnO Nanostructures for Photocatalysis Application

2,* , 2
1,* and 2,*
College of Material Science and Engineering, Sichuan University, Chengdu 610065, China
Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China
Authors to whom correspondence should be addressed.
Academic Editor: Monica Distaso
Received: 20 October 2016 / Revised: 6 November 2016 / Accepted: 8 November 2016 / Published: 16 November 2016
(This article belongs to the Special Issue Mesocrystals and Hierarchical Structures)
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Semiconductor photocatalysis provides potential solutions for many energy and environmental-related issues. Recently, various semiconductors with hierarchical nanostructures have been fabricated to achieve efficient photocatalysts owing to their multiple advantages, such as high surface area, porous structures, as well as enhanced light harvesting. ZnO has been widely investigated and considered as the most promising alternative photocatalyst to TiO2. Herein, we present a review on the fabrication methods, growth mechanisms and photocatalytic applications of hierarchical ZnO nanostructures. Various synthetic strategies and growth mechanisms, including multistep sequential growth routes, template-based synthesis, template-free self-organization and precursor or self-templating strategies, are highlighted. In addition, the fabrication of multicomponent ZnO-based nanocomposites with hierarchical structures is also included. Finally, the application of hierarchical ZnO nanostructures and nanocomposites in typical photocatalytic reactions, such as pollutant degradation and H2 evolution, is reviewed. View Full-Text
Keywords: hierarchical nanostructure; ZnO; fabrication; photocatalysis hierarchical nanostructure; ZnO; fabrication; photocatalysis

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Xia, Y.; Wang, J.; Chen, R.; Zhou, D.; Xiang, L. A Review on the Fabrication of Hierarchical ZnO Nanostructures for Photocatalysis Application. Crystals 2016, 6, 148.

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