Adsorption of Methyl Orange on Magnetically Separable Mesoporous Titania Nanocomposite

被引：14
作者：
Gao, Libo [1 ,2 ]
Zhang, Qiang [1 ,2 ]
Li, Junyang [1 ,2 ]
Feng, Ruiting [1 ,2 ]
Xu, Hongyan [3 ]
Xue, Chenyang [1 ,2 ]
机构：
[1] North Univ China, Minist Educ, Key Lab Instrumentat Sci & Dynam Measurement, Taiyuan 030051, Peoples R China
[2] North Univ China, Sci & Technol Elect Test & Measurement Lab, Taiyuan 030051, Peoples R China
[3] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2014年 / 22卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Mesoporous Fe3O4-SiO2-TiO2; Adsorption; Methyl orange; Pseudo-second order model; CORE-SHELL NANOCOMPOSITES; IRON-OXIDE NANOPARTICLES; PHOTOCATALYTIC DEGRADATION; TIO2; CRYSTALLINITY; MICROSPHERES; REMOVAL; CARBON; FILMS; DYES;
D O I：
10.1016/j.cjche.2014.09.015
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The adsorption of mesoporous Fe3O4-SiO2-TiO2 (MFST), which can be separated easily from solution by a magnet, for the removal of methyl orange (MO) was investigated. The nitrogen adsorption-desorption measurement shows successful synthesis of MFST with an average pore size of 3.8 nm and a large specific surface area of 55 m(2).g(-1). About 95% adsorption percentage of MO is achieved with an initial concentration of 10 mg.L-1 in the dark and the MFST exhibits superior adsorption ability under acid conditions. The adsorption data fit well with the pseudo-second order model for adsorption. After 4 cycles, the adsorption rate for MO remains 74% in the dark and the MFST can be recovered in a magnetic field with a recovery of about 80 % (by mass). It demonstrates that the samples have significant value on applications of wastewater treatment. (C) 2014 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
引用
收藏
页码：1168 / 1173
页数：6
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