Facets coupling of BiOBr-g-C3N4 composite photocatalyst for enhanced visible-light-driven photocatalytic activity

被引：889

作者：

Ye, Liqun ^{[1
,2
]}

Liu, Jinyan ^{[1
]}

Jiang, Zhuo ^{[1
]}

Peng, Tianyou ^{[1
]}

Zan, Ling ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

[2] Nanyang Normal Univ, Coll Chem & Pharmaceut Engn, Nanyang 473061, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2013年 / 142卷

基金：

中国国家自然科学基金;

关键词：

BiOBr; g-C3N4; Facet; Coupling; Charges transfer properties; GRAPHITE-LIKE C3N4; ACID ORANGE 7; BIOX X; DEGRADATION; SURFACE; CARBON; BR; CL; NANOSHEETS; PHOTOREACTIVITY;

D O I：

10.1016/j.apcatb.2013.04.058

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：

BiOBr-g-C3N4 inorganic-organic composite photocatalysts were synthesized by a one-step chemical bath method at low temperature and characterized by X-ray diffraction patterns (XRD), Fourier transform infrared (FT-IR), thermo gravimetric (TG), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and UV-vis diffuse reflectance spectra (DRS). The BiOBr-g-C3N4 composite showed much higher visible-light-driven (VLD) photocatalytic activity than pure g-C3N4 and BiOBr for rhodamine B (RhB) degradation. The photocatalytic mechanism analysis revealed that the interreaction between BiOBr and g-C3N4 is a kind of facet coupling between BiOBr-{0 0 1} and g-C3N4-{0 0 2}. The active species trapping and quantification experiments indicated that the photoinduced charges transfer between these facets resulted in the efficient charge separation. Crown Copyright (c) 2013 Published by Elsevier B.V. All rights reserved.

引用

页码：1 / 7

页数：7

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