The effect of SnO2 on the photocatalytic activity of aerosol-made TiO2 particles

被引：7

作者：

Shi, LY ^{[1
]}

Zhang, Y ^{[1
]}

Fang, DY ^{[1
]}

Li, CZ ^{[1
]}

Gu, HC ^{[1
]}

机构：

[1] Shanghai Univ, Dept Chem, Shanghai 200072, Peoples R China

来源：

JOURNAL OF MATERIALS SYNTHESIS AND PROCESSING | 1999年 / 7卷 / 06期

关键词：

composite particles; photodegradation; titanium dioxide;

D O I：

10.1023/A:1021813913299

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultrafine titania particles were prepared by gas-phase oxidation of titanium tetrachloride in a high-temperature tubular aerosol how reactor. Homogeneous precipitation method was used to deposit SnO2 on the surface of lab-made TiO2. The composite particles were characterized by TEM, ICP, XRD, and BET surface area analysis. The composite particles, pure ultrafine TiO2, commercial TiO2, and pure SnO2 were employed for photocatalytic degradation of azo dye active red X-3B in aerated solutions. The result showed that the photoactivity of the composite particles was higher than that of pure ultrafine TiO2 and commercial TiO2, and the optimum loading of SnO2 on TiO2 is 15.3%. The enhanced degradation rate of X-3B using SnO2-TiO2 composite particles was attributed to increased charge separation in these systems.

引用

页码：357 / 363

页数：7

共 22 条

[1] PREPARATION AND PHOTOELECTROCHEMICAL CHARACTERIZATION OF THIN SNO(2) NANOCRYSTALLINE SEMICONDUCTOR-FILMS AND THEIR SENSITIZATION WITH BIS(2,2'-BIPYRIDINE)(2,2'-BIPYRIDINE-4,4'-DICARBOXYLIC ACID)RUTHENIUM(II) COMPLEX [J].

BEDJA, I ;

HOTCHANDANI, S ;

KAMAT, PV .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (15) :4133-4140

[2] SYNTHESIS, CHARACTERIZATION, AND PROPERTIES OF MICROEMULSION-MEDIATED NANOPHASE TIO2 PARTICLES [J].

CHHABRA, V ;

PILLAI, V ;

MISHRA, BK ;

MORRONE, A ;

SHAH, DO .

LANGMUIR, 1995, 11 (09) :3307-3311

[3] Synthesis and evaluation of titania powders for photodestruction of phenol [J].

Fotou, George P. ;

Vemury, Srinivas ;

Pratsinis, Sotiris E. .

CHEMICAL ENGINEERING SCIENCE, 1994, 49 (24B) :4939-4948

[4] Photocatalytic destruction of phenol and salicylic acid with aerosol-made and commercial titania powders [J].

Fotou, GP ;

Pratsinis, SE .

CHEMICAL ENGINEERING COMMUNICATIONS, 1996, 151 :251-269

[5] THE ROLE OF OXYGEN IN PHOTOOXIDATION OF ORGANIC-MOLECULES ON SEMICONDUCTOR PARTICLES [J].

GERISCHER, H ;

HELLER, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (13) :5261-5267

[6]

GOPIDAS KR, 1994, J PHYS CHEM-US, V98, P3822

[7]

HIROSHI Y, 1989, J PHYS CHEM-US, V93, P4833

[8]

JUDIN VPS, 1993, CHEM BRIT, V29, P503

[9] Synthesis of nanoparticles in the gas phase for electronic, optical and magnetic applications - A review [J].

Kruis, FE ;

Fissan, H ;

Peled, A .

JOURNAL OF AEROSOL SCIENCE, 1998, 29 (5-6) :511-535

[10] PHOTOCHEMICAL PROCESSES FOR WATER-TREATMENT [J].

LEGRINI, O ;

OLIVEROS, E ;

BRAUN, AM .

CHEMICAL REVIEWS, 1993, 93 (02) :671-698

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