Nano-TiO2 Decorated Radial-Like Mesoporous Silica: Preparation, Characterization, and Adsorption-Photodegradation Behavior

被引：17

作者：

Qian, Tingting ^{[1
]}

Yin, Xiaoping ^{[1
]}

Li, Jinhong ^{[1
]}

Nian, Hong'en ^{[2
]}

Xu, Hui ^{[1
]}

Deng, Yong ^{[1
]}

Wang, Xiang ^{[1
]}

机构：

[1] China Univ Geosci, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2017年 / 33卷 / 11期

关键词：

Radial-like mesoporous silica; Nano-TiO2; Adsorption-photocatalytic degradation; METHYLENE-BLUE; VISIBLE-LIGHT; PHOTOCATALYTIC DEGRADATION; TIO2; CARBON; CATALYSTS; REMOVAL; WATER; ADSORBENTS; DEPOSITION;

D O I：

10.1016/j.jmst.2016.09.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Supported nanocrystalline TiO2 with a diameter of 15-30nm was prepared from previously synthesized radial mesoporous silica (RMS) by a post-synthesis method. In addition, their adsorption-photocatalytic activity toward the degradation of methylene blue (MB) was determined. RMS was tailor-made with the main template of CTAB and the SiO2 precursor of TEOS through a facile self-assembly process. The structural, morphological and textural properties of the well-designed TiO2/RMS samples were characterized. The RMS structure was retained after loading TiO2, but its surface area and pore diameter decreased as a result of partial pore blocking. The removal activity of MB for TiO2/RMS was significantly higher than that of commercial TiO2 nanoparticles. The optimal TiO2 loading (20 wt%) on the support could achieve the complete removal of MB within 70 min. The prepared TiO2/RMS particles can be easily separated and display good durability after six reaction cycles. (C) 2016 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

引用

页码：1314 / 1322

页数：9

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