Synthesis of TiO2/SBA-15 photocatalyst for the azo dye decolorization through the polyol method

被引：43

作者：

Tseng, Hui-Hsin ^{[1
,2
]}

Lee, Wenlian William ^{[1
,2
]}

Wei, Ming-Chi ^{[3
]}

Huang, Bing-Shun ^{[4
]}

Hsieh, Ming-Chi ^{[1
,2
]}

Cheng, Po-Yu ^{[1
,2
]}

机构：

[1] Chung Shan Med Univ, Sch Occupat Safety & Hlth, Taichung 402, Taiwan

[2] Chung Shan Med Univ Hosp, Dept Occupat Med, Taichung 402, Taiwan

[3] Cent Taiwan Univ Sci & Technol, Dept Food Sci, Taichung 402, Taiwan

[4] Natl Chung Hsing Univ, Dept Environm Engn, Taichung 402, Taiwan

来源：

CHEMICAL ENGINEERING JOURNAL | 2012年 / 210卷

关键词：

Immobilized TiO2; SBA-15; Photocatalyst; Polyol method; Acid red 1; SOL-GEL METHOD; MESOPOROUS MATERIALS; DEGRADATION; TIO2; SILICA; WATER; PHOTODEGRADATION; PARTICLES; NANOPARTICLES; DYESTUFFS;

D O I：

10.1016/j.cej.2012.09.036

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The nano-sized TiO2 powder and immobilized TiO2/SBA-15 photocatalysts were synthesized via a polyol method with an attempt to increase the quantitative effect by reducing the particle size and avoid the aggregation by immobilizing on hydrophilic SBA-15 support. The effect of reduction temperature on the TiO2 crystalline size was investigated. The X-ray diffraction (XRD) and Field-emission scanning electron microscopy (FE-SEM) results showed that the crystallite size of the TiO2 particles is in the nanoregime and indicated that depended on the nucleation and growth process, different sizes and shapes of monodisperse or polydisperse TiO2 powders are formed. The photocatalytic activities of the samples were evaluated for the decolorization of an ano dye, acid red 1 (AR1) were studied in aqueous solution under UV light irradiation. The effect of different parameters such as catalyst dosage, solution pH. TiO2 loading weight, and different support materials Al2O3 and glass bead on the decolorization efficiency of AR1 were studied. The results indicated that the self-synthesized TiO2 showed comparable decolorization efficiency than commercial P25, and the efficiency can be significantly improved by using SBA-15 as support material due to its hydrophilicity. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：529 / 538

页数：10

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