Synthesis of novel Z-scheme AgI/Ag/AgBr composite with enhanced visible light photocatalytic activity

被引：150

作者：

Lin, Haili ^{[1
]}

Cao, Jing ^{[1
]}

Luo, Bangde ^{[1
]}

Xu, Benyan ^{[1
]}

Chen, Shifu ^{[1
]}

机构：

[1] Huaibei Normal Univ, Coll Chem & Mat Sci, Huaibei 235000, Anhui, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2012年 / 21卷

关键词：

AgI/Ag/AgBr composite; Z-scheme; Ion exchange; Mechanism; AGBR-AG-BI2WO6 NANOJUNCTION SYSTEM; ORGANIC-COMPOUNDS; EFFICIENT; DRIVEN; WATER; DESTRUCTION; DEGRADATION; DECOMPOSITION; AGBR/TIO2; AZODYES;

D O I：

10.1016/j.catcom.2012.02.008

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：

Novel Z-scheme Agl/Ag/AgBr composite was synthesized through a facile in-situ ion exchange method along with light reduction. The as-prepared Agl/Ag/AgBr was characterized by XRD, SEM, DRS, XPS, EDS, BET and PL technology to study its phase structures, morphologies, optical properties, element components and surface areas. Agl/Ag/AgBr displayed excellent photocatalytic activity for the degradation of methyl orange under visible light (lambda > 420 nm), which can be ascribed to the efficient separation of photogenerated electrons and holes through Z-scheme system composed of AgI, Ag and AgBr. The photocatalytic mechanism investigation demonstrates that center dot O-2(-) was the main reactive species for methyl orange (MO) degradation. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：91 / 95

页数：5

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