TiO2 supported on rod-like mesoporous silica SBA-15: Preparation, characterization and photocatalytic behaviour

被引：20

作者：

Li, Yanjuan ^{[1
]}

Li, Nan ^{[1
]}

Tu, Jinchun ^{[1
,2
]}

Li, Xiaotian ^{[1
]}

Wang, Beibei ^{[1
]}

Chi, Yue ^{[1
]}

Liu, Darui ^{[1
]}

Yang, Dianfan ^{[1
]}

机构：

[1] Jilin Univ, Coll Mat Sci & Engn, Key Lab Automobile Mat, Minist Educ, Changchun 130012, Peoples R China

[2] Hainan Univ, Minist Educ, Coll Mat & Chem Engn, Key Lab Trop Biol Resources, Haikou 570228, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Oxides; Chemical synthesis; X-ray diffraction; Catalytic properties; COMPOSITE NANOPARTICLES; BIOMATERIAL SYSTEM; MAGNETIC CORE; TITANIA; DEGRADATION; TEMPERATURE; MATRIX; SHELL;

D O I：

10.1016/j.materresbull.2011.08.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiO2 nanoparticles have been successfully incorporated in the pores of mesoporous silica SBA-15 with different morphologies by a wet impregnation method. The composites were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), inductively coupled plasma (ICP) emission spectroscopy, transmission electron microscopy (TEM), N-2-sorption and UV-Vis diffuse reflectance spectroscopy. The photodegradation of methyl orange (MO) was used to study their photocatalytic property. It is indicated that the morphology of SBA-15 had a great influence on the photocatalytic activity of the composites. When TiO2/SBA-15 composite was prepared by loading TiO2 nanoparticles on uniform rod-like SBA-15 of 1 mu m length, it showed higher photocatalytic degradation rate than that on less regular but much larger SBA-15 support. This difference was rationalized in terms of the homogeneously distributed and shorter channels of rod-like SBA-15, which favored mass transport and improved the efficient utilization of the pore surface. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2317 / 2322

页数：6

共 22 条

[21] Fabrication and photocatalytic activity of ZnO prepared by different precipitants using paralled flaw precipitation method
Zhong, Jun Bo
Xu, Bin
Feng, Fa Mei
He, Xi Yang
Li, Jian Zhang
Hu, Wei
[J]. MATERIALS LETTERS, 2011, 65 (12) : 1995 - 1997
[22] Effect of silica wall microporosity on the state and performance of TiO2 nanocrystals in SBA-15 matrix
Zukerman, Roie
Vradman, Leonid
Titelman, Leonid
Weidenthaler, Claudia
Landau, Miron V.
Herskowitz, Mod
[J]. MICROPOROUS AND MESOPOROUS MATERIALS, 2008, 116 (1-3) : 237 - 245

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