Synthesis and properties of magnetically separable Fe3O4/TiO2/Bi2O3 photocatalysts

被引：22

作者：

Dong, Xiaoli ^{[1
]}

Shao, Yong ^{[1
]}

Zhang, Xinxin ^{[1
]}

Ma, Hongchao ^{[1
]}

Zhang, Xiufang ^{[1
]}

Shi, Fei ^{[1
]}

Ma, Chun ^{[1
]}

Xue, Mang ^{[1
]}

机构：

[1] Dalian Polytech Univ, Sch Light Ind & Chem Engn, Dalian 116034, Peoples R China

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2014年 / 40卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Magnetic Fe3O4/TiO2/Bi2O3; Sol-gel; Visible light; Photocatalytic activity; VISIBLE-LIGHT IRRADIATION; BISMUTH TITANATE BI12TIO20; TIO2; NANOPARTICLES; DEGRADATION; ANATASE;

D O I：

10.1007/s11164-013-1142-z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Fe3O4/TiO2/Bi2O3 composites were synthesized by a sol-gel method and used as improved photocatalysts for the degradation of methyl orange (MO) under simulated sunlight at room temperature. The as-prepared Fe3O4/TiO2/Bi2O3 composites were characterized by X-ray diffraction, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and diffuse reflectance spectroscopy (DRS). TEM analysis reveals that the composite has a core-shell structure and diameters of Fe3O4 core is about 200 nm. DRS results reveal that all composites showed red shift in optical absorption. TiO2, Fe3O4, and Bi2O3 exist mainly as separate phases in the Fe3O4/TiO2/Bi2O3 composites based on XPS analysis. The photocatalytic degradation of MO with the prepared photocatalysts was studied under simulated sunlight illumination. Photocatalytic reactivity test indicated that the removal efficiency of MO with the Fe3O4/TiO2/Bi2O3 photocatalyst was higher than that of pure TiO2 and Fe3O4/TiO2. Recovery rate of Fe3O4/TiO2/Bi2O3 photocatalysts achieved 80 % after five times reuse.

引用

页码：2953 / 2961

页数：9

共 21 条

[1] The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation [J].

Anpo, M ;

Takeuchi, M .

JOURNAL OF CATALYSIS, 2003, 216 (1-2) :505-516

[2] Novel photocatalyst: Titania-coated magnetite. Activity and photodissolution [J].

Beydoun, D ;

Amal, R ;

Low, GKC ;

McEvoy, S .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (18) :4387-4396

[3] Self-assembly of active Bi2O3/TiO2 visible photocatalyst with ordered mesoporous structure and highly crystallized anatase [J].

Bian, Zhenfeng ;

Zhu, Jian ;

Wang, Shaohua ;

Cao, Yong ;

Qian, Xufang ;

Li, Hexing .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (16) :6258-6262

[4] Preparation and characterization of a magnetically separated photocatalyst and its catalytic properties [J].

Gao, Y ;

Chen, BH ;

Li, HL ;

Ma, YX .

MATERIALS CHEMISTRY AND PHYSICS, 2003, 80 (01) :348-355

[5] Sonochemical synthesis and visible light photocatalytic behavior of CdSe and CdSe/TiO2 nanoparticles [J].

Ho, WK ;

Yu, JC .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2006, 247 (1-2) :268-274

[6] ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS [J].

HOFFMANN, MR ;

MARTIN, ST ;

CHOI, WY ;

BAHNEMANN, DW .

CHEMICAL REVIEWS, 1995, 95 (01) :69-96

[7] Synthesis of TiO2 hollow spheres using binary ionic liquids as an electrocatalyst [J].

Hong, Kiwon ;

Yoo, Kye Sang .

RESEARCH ON CHEMICAL INTERMEDIATES, 2011, 37 (09) :1325-1331

[8] PHOTOCATALYSIS ON TIO2 SURFACES - PRINCIPLES, MECHANISMS, AND SELECTED RESULTS [J].

LINSEBIGLER, AL ;

LU, GQ ;

YATES, JT .

CHEMICAL REVIEWS, 1995, 95 (03) :735-758

[9]

Liu J., 2009, ANGEW CHEM, V121, P5989, DOI DOI 10.1002/ANGE.200901566

[10] INNER-ORBITAL BINDING-ENERGY SHIFTS OF ANTIMONY AND BISMUTH COMPOUNDS [J].

MORGAN, WE ;

STEC, WJ ;

VANWAZER, JR .

INORGANIC CHEMISTRY, 1973, 12 (04) :953-955

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