Bi5O7I/Bi2O3 composite photocatalyst with enhanced visible light photocatalytic activity

被引：34

作者：

Cheng, Lijun ^{[1
,2
]}

Kang, Yong ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

[2] Tianjin Univ Sci & Technol, Coll Mech Engn, Tianjin 300222, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2015年 / 72卷

关键词：

Bi5O7I/Bi2O3; Composite; Photocatalyst; Malachite green; Mechanism; BI2O3; HETEROJUNCTION; EFFICIENT; NANOPARTICLES;

D O I：

10.1016/j.catcom.2015.09.002

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 series of Bi5O7I/Bi2O3 composite photocatalysts were first synthesized via chemical etching method. Their crystalline phase, composition, light absorption ability and photoluminescence emission performance were characterized by XRD, EDX, UV-vis and PL methods, respectively. And malachite green was used as the model pollutant to investigate the visible light photocatalytic activities of the composite photocatalysts. It is found that 80.48% Bi5O7I/Bi2O3 showed the highest activity for its relatively stronger absorption ability for visible light and best separation efficiency of electron-hole pairs. Last, the photocatalytic mechanism of the Bi5O7I/Bi2O3 composite was put forward qualitatively. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：16 / 19

页数：4

共 23 条

[1] Photocatalytic decolorization of Rhodamine B dye using novel mesoporous SnO2-TiO2 nano mixed oxides prepared by sol-gel method [J].

Abdel-Messih, M. F. ;

Ahmed, M. A. ;

El-Sayed, Ahmed Shebl .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2013, 260 :1-8

[2] Enhancement in visible light-responsive photocatalytic activity by embedding Cu-doped ZnO nanoparticles on multi-walled carbon nanotubes [J].

Ahmad, M. ;

Ahmed, E. ;

Hong, Z. L. ;

Jiao, X. L. ;

Abbas, T. ;

Khalid, N. R. .

APPLIED SURFACE SCIENCE, 2013, 285 :702-712

[3] Low temperature synthesis of novel rodlike Bi5O7I with visible light photocatalytic performance [J].

Cao, Jing ;

Li, Xin ;

Lin, Haili ;

Xu, Benyan ;

Luo, Bangde ;

Chen, Shifu .

MATERIALS LETTERS, 2012, 76 :181-183

[4] Convenient synthesis of porous carbon nanospheres with tunable pore structure and excellent adsorption capacity [J].

Chang, Binbin ;

Guan, Daxiang ;

Tian, Yanlong ;

Yang, Zhichong ;

Dong, Xiaoping .

JOURNAL OF HAZARDOUS MATERIALS, 2013, 262 :256-264

[5] Bi5O7I/Bi2O3: A novel heterojunction-structured visible light-driven photocatalyst [J].

Cheng, Lijun ;

Liu, Xiao ;

Kang, Yong .

MATERIALS LETTERS, 2014, 134 :218-221

[6] Synthesis of NaBiO3/Bi2O3 heterojunction-structured photocatalyst and its photocatalytic mechanism [J].

Cheng, Lijun ;

Kang, Yong .

MATERIALS LETTERS, 2014, 117 :94-97

[7] Preparation and visible light photocatalytic activity of Bi2O3/Bi2WO6 heterojunction photocatalysts [J].

Gui, Ming-Sheng ;

Zhang, Wei-De ;

Su, Qing-Xi ;

Chen, Cai-Hong .

JOURNAL OF SOLID STATE CHEMISTRY, 2011, 184 (08) :1977-1982

[8] Visible Light Photocatalytic Properties of Metastable γ-Bi2O3 with Different Morphologies [J].

Hao, Weichang ;

Gao, Yuan ;

Jing, Xi ;

Zou, Wen ;

Chen, Yan ;

Wang, Tianmin .

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2014, 30 (02) :192-196

[9] Photocatalytic degradation of methyl orange using α-Bi2O3 prepared without surfactant [J].

Iyyapushpam, S. ;

Nishanthi, S. T. ;

Padiyan, D. Pathinettam .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 563 :104-107

[10] Enhanced Visible Light Photocatalysis of Bi2O3 upon Fluorination [J].

Jiang, Hai-Ying ;

Liu, Jingjing ;

Cheng, Kun ;

Sun, Wenbin ;

Lin, Jun .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (39) :20029-20036

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