Assembled fabrication of α-Fe2O3/BiOCl heterojunctions with enhanced photocatalytic performance

被引：72

作者：

Zheng, Yan ^{[1
]}

Zhang, Xiao ^{[2
]}

Zhao, Jie ^{[1
]}

Yang, Ping ^{[1
]}

机构：

[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China

[2] Univ New South Wales, Sch Chem, Sydney, NSW 2052, Australia

来源：

APPLIED SURFACE SCIENCE | 2018年 / 430卷

基金：

中国国家自然科学基金;

关键词：

alpha-Fe2O3/BiOCl; Heterojunctions; Interfaces; Photocatalysis; IN-SITU SYNTHESIS; FACILE SYNTHESIS; BIOCL; NANOSHEETS; NANOCOMPOSITES; DEGRADATION; NANOFIBERS; COMPOSITE;

D O I：

10.1016/j.apsusc.2017.06.097

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：

alpha-Fe2O3/BiOCl heterojunctions were synthesized by growing and assembling alpha-Fe2O3 nanoplates to BiOCl microflowers via a two-step route to enhance the photocatalytic performance of BiOCl. The morphology, microstructure, element composition and optical properties of alpha-Fe2O3/BiOCl heterojunctions have been investigated by SEM, TEM, XRD, FT-IR, Raman spectra, XPS, UV-vis diffuse reflectance and PL spectra. Electrostatic interaction was a key to form alpha-Fe2O3/BiOCl heterojunctions. Compared with pure BiOCl, the synthesized alpha-Fe2O3/BiOCl heterojunctions possess an efficient visible light absorption and exhibit an improved of photocatalytic efficiency. A photocatalytic degradation mechanism has been proposed to explain that the heterojunctions enhance the separation efficiency of electron-hole pairs, and the holes are the main reactive species in the degratation of Rhodamine B. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：585 / 594

页数：10

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