Facile synthesis of β-Bi2O3/Bi2O2CO3 nanocomposite with high visible-light photocatalytic activity

被引：53

作者：

Cai, Guiyu ^{[1
]}

Xu, Lingling ^{[1
]}

Wei, Bo ^{[2
]}

Che, Jixin ^{[3
]}

Gao, Hong ^{[1
]}

Sun, Wenjun ^{[1
]}

机构：

[1] Harbin Normal Univ, Sch Phys & Elect Engn, Minist Educ, Key Lab Photon & Elect Bandgap Mat, Harbin 150025, Peoples R China

[2] Harbin Inst Technol, Dept Phys, Harbin 150080, Peoples R China

[3] Aviat Univ Air Force, Changchun 130022, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 120卷

基金：

美国国家科学基金会;

关键词：

Bi2O3; Bi2O2CO3; Phase transformation; Nanocomposites; Photocatalysts; EFFICIENT; MICROSPHERES; ROUTE;

D O I：

10.1016/j.matlet.2014.01.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

beta-Bi2O3/Bi2O2CO3 composite nanosheets are synthesized via a rational heat-treatment of Bi2O2CO3 precursor. The precursor transforms to beta-Bi2O3/Bi2O2CO3 composites and alpha-Bi2O3 phase under different calcination conditions. The photocatalytic activities are evaluated and compared through the photodegradation of methylene blue (MB) under visible-light irradiation. beta-Bi2O3/Bi2O2CO3 composites exhibit much higher photodegradation activity than Bi2O2CO3 and alpha-Bi2O3 products. The significant enhancement is attributed to the formation of beta-Bi2O3/Bi2O2CO3 heterojunctions, which is favorable for the low recombination rate of the electron-hole pairs. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1 / 4

页数：4

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