Photocatalytic properties of BiOX (X = Cl, Br, and I)

被引：307

作者：

An Huizhong ^{[1
]}

Du Yi ^{[1
]}

Wang Tianmin ^{[1
]}

Wang Cong ^{[1
]}

Hao Weichang ^{[1
]}

Zhang Junying ^{[1
]}

机构：

[1] Beihang Univ, Sch Sci, Ctr Condensed Mat & Mat Phys, Beijing 100083, Peoples R China

来源：

RARE METALS | 2008年 / 27卷 / 03期

基金：

中国国家自然科学基金;

关键词：

photocatalysis; rhodamine B; isopropanol; O-2; evolution; BiOCl; BiOBr; BiOI;

D O I：

10.1016/S1001-0521(08)60123-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel series of photocatalysts, bismuth oxyhalide (BiOX, X = Cl, Br, and I), were synthesized by a hydrolysis method. The powder samples were characterized by the use of X-ray diffraction (XRD), scanning electron microscope, and UV-Vis spectrophotometer. The XRD pattern showed that all the BiOX were well crystallized in the tetragonal structure. The band gaps of the sheet-shaped compounds BiOX (X Cl, Br, and I) were 3.44, 2.76, and 1.85 eV, respectively. BiOBr showed the highest photocatalytic activity in degrading rhodamine B (RhB) and evolving O-2 for its proper valence band (VB). BiOI has no photocatalytic activity. BiOCl showed the highest activity in decomposing isopropanol because of electron-hole pair separation through trapping electrons by oxygen vacancies.

引用

页码：243 / 250

页数：8

共 36 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[2] Photosensitized degradation of dyes in polyoxometalate solutions versus TiO2 dispersions under visible-light irradiation:: Mechanistic implications [J].

Chen, CC ;

Zhao, W ;

Lei, PX ;

Zhao, JC ;

Serponer, N .

CHEMISTRY-A EUROPEAN JOURNAL, 2004, 10 (08) :1956-1965

[3] Visible-light-induced degradation of rhodamine B by nanosized Bi2WO6 [J].

Fu, HB ;

Pan, CS ;

Yao, WQ ;

Zhu, YF .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (47) :22432-22439

[4] Synthesis, characterization and photocatalytic properties of nanosized Bi2WO6, PbWO4 and ZnWO4 catalysts [J].

Fu, Hongbo ;

Pan, Chengsi ;

Zhang, Liwu ;

Zhu, Yongfa .

MATERIALS RESEARCH BULLETIN, 2007, 42 (04) :696-706

[5] Photocatalytic properties of nanosized Bi2WO6 catalysts synthesized via a hydrothermal process [J].

Fu, Hongbo ;

Zhang, Liwu ;

Yao, Wenqing ;

Zhu, Yongfa .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 66 (1-2) :100-110

[6] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].

FUJISHIMA, A ;

HONDA, K .

NATURE, 1972, 238 (5358) :37-+

[7] Photocatalytic degradation of methylene blue on Bi2MNbO7 (M = Al, Fe, In, Sm) sol-gel catalysts [J].

Garza-Tovar, LL ;

Torres-Martínez, LM ;

Rodríguez, DB ;

Gómez, R ;

del Angel, G .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2006, 247 (1-2) :283-290

[8] Molecular design of coumarin dyes for efficient dye-sensitized solar cells [J].

Hara, K ;

Sato, T ;

Katoh, R ;

Furube, A ;

Ohga, Y ;

Shinpo, A ;

Suga, S ;

Sayama, K ;

Sugihara, H ;

Arakawa, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (02) :597-606

[9] Photocatalytic activity of bismuth germanate Bi12GeO20 powders [J].

He, CH ;

Gu, MY .

SCRIPTA MATERIALIA, 2006, 54 (07) :1221-1225

[10] Preparation, characterization and photocatalytic properties of Bi12SiO20 powders [J].

He, Chihuan ;

Gu, Mingyuan .

SCRIPTA MATERIALIA, 2006, 55 (05) :481-484

← 1 2 3 4 →