Construction of ZnO/TiO2 photonic crystal heterostructures for enhanced photocatalytic properties

被引：162

作者：

Zheng, Xiuzhen ^{[1
]}

Li, Danzhen ^{[1
]}

Li, Xiaofang ^{[1
]}

Chen, Jing ^{[1
]}

Cao, Changsheng ^{[1
]}

Fang, Jialin ^{[1
]}

Wang, Jubao ^{[1
]}

He, Yunhui ^{[1
]}

Zheng, Yi ^{[1
]}

机构：

[1] Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Res Inst Photocatalysis, Fuzhou 350002, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2015年 / 168卷

基金：

中国国家自然科学基金;

关键词：

ZnO nanoparticles; TiO2 photonic crystal; Photocatalysis; Heterostructures; Active species; TITANIUM-DIOXIDE; TIO2; NANOCOMPOSITES; NANOPARTICLES; DEGRADATION; FABRICATION; ELECTRODES; OXIDATION; GRAPHENE; GROWTH;

D O I：

10.1016/j.apcatb.2015.01.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：408 / 415

页数：8

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