期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 168, 期 -, 页码 408-415出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2015.01.001
关键词
ZnO nanoparticles; TiO2 photonic crystal; Photocatalysis; Heterostructures; Active species
资金
- National Natural Science Foundation of China [21173047, 21373049]
- National Basic Research Program of China (973 Program) [2013CB632405]
A highly ordered ZnO/TiO2 photonic crystal (ZnO/TiO2-PC) was obtained by a simply pyrolysis strategy. Combined with a series of characterizations, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and transmittance spectra, it was found that the in situ formed ZnO phases were uniformly grafted to TiO2-PC framework forming hybrid nanostructure. Additionally, the formation of heterojunction between ZnO and TiO2-PC enhanced the separation efficiency of photogenerated electron-hole pairs, which significantly improved the photocatalytic performances. Based on the results of photoelectrochemical measurement and the detection of active species in photocatalytic degradation process, the photocatalytic degradation mechanism of ZnO/TiO2-PC nanocomposite was proposed. It is hoped that our work could provide a good insight into the preparation of photonic crystal heterostructures for the environmental purification. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据