Synthesis and characterisation of highly ordered mesoporous Fe2O3-SiO2 composite and its removal properties of azo dyes from aqueous solution

被引：11

作者：

Zhang, F. ^{[1
]}

Liu, Y. J. ^{[2
]}

Xiao, X. C. ^{[1
]}

Cai, X. Y. ^{[1
]}

Li, H. ^{[1
]}

Wang, Y. D. ^{[1
]}

机构：

[1] Yunnan Univ, Dept Mat Sci & Engn, Kunming 650091, Peoples R China

[2] Yunnan Univ, Adv Anal & Measurement Ctr, Kunming 650091, Peoples R China

来源：

MATERIALS TECHNOLOGY | 2012年 / 27卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Fe2O3-SiO2; composite; Mesoporous structure; Azo dyes; Removal performance; MOLECULAR-SIEVES; PHOTOCATALYTIC SHELL; ANTIMICROBIAL ACTIVITY; CATALYTIC COMBUSTION; INFRARED-ABSORPTION; MCM-41; MATERIALS; MAGNETIC CORE; NANOPARTICLES; SILICA; OXIDE;

D O I：

10.1179/1753555712Y.0000000003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Highly ordered mesoporous material MCM-41 was synthesised from tetraethylorthosilicate as an Si source and cetyltrimethylammonium bromide as a template. Fe2O3 with 100 wt-% was introduced into the highly ordered mesoporous MCM-41 by chemical precipitation method to prepare the highly ordered mesoporous Fe2O3-SiO2 composite. The samples were characterised by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transformed infrared spectroscopy, X-ray photoelectron spectroscopy, UV-vis spectrophotometry, and nitrogen adsorption-desorption measurement respectively. The results indicate that the synthesised Fe2O3-SiO2 composite has a highly ordered mesoporous structure with a specific surface area of 593 m(2) g(-1) and a pore volume of 0.322 cm(3) g(-1). The performance of Fe2O3-SiO2 composite as a remover was further demonstrated in the removal of methyl orange (MO), Congo red, methylene blue (MB), rhodaming B (RB) under visible light irradiation respectively. A good ability to remove MB, RB and MO can be obtained. In especially, the Fe2O3-SiO2 composite shows an excellent removal performance for MB under the room temperature in short time, making them to be promising candidates for wastewater treatment.

引用

页码：196 / 204

页数：9

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