Adsorption of Methyl Orange on Magnetically Separable Mesoporous Titania Nanocomposite

doi:10.1016/j.cjche.2014.09.015

›› 2014, Vol. 22 ›› Issue (10): 1168-1173.DOI: 10.1016/j.cjche.2014.09.015

• 能源、资源与环境技术 • 上一篇下一篇

Adsorption of Methyl Orange on Magnetically Separable Mesoporous Titania Nanocomposite

Libo Gao^1,2, Qiang Zhang^1,2, Junyang Li^1,2, Ruiting Feng^1,2, Hongyan Xu³, Chenyang Xue^1,2

1 Key Laboratory of Instrumentation Science and Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China;
2 Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan 030051, China;
3 School of Materials Science and Engineering, North University of China, Taiyuan 030051, China

收稿日期:2013-12-28 修回日期:2014-03-18 出版日期:2014-10-28 发布日期:2014-12-01
通讯作者: Chenyang Xue
基金资助:
Supported by the National Natural Science Foundation of China (2011011013-2) and the Youth Foundation of Science and Technology Agency of Shanxi Province, China (2011021020-2).

Adsorption of Methyl Orange on Magnetically Separable Mesoporous Titania Nanocomposite

Libo Gao^1,2, Qiang Zhang^1,2, Junyang Li^1,2, Ruiting Feng^1,2, Hongyan Xu³, Chenyang Xue^1,2

1 Key Laboratory of Instrumentation Science and Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China;
2 Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan 030051, China;
3 School of Materials Science and Engineering, North University of China, Taiyuan 030051, China

Received:2013-12-28 Revised:2014-03-18 Online:2014-10-28 Published:2014-12-01
Supported by:
Supported by the National Natural Science Foundation of China (2011011013-2) and the Youth Foundation of Science and Technology Agency of Shanxi Province, China (2011021020-2).

摘要/Abstract

摘要： The adsorption of mesoporous Fe₃O₄-SiO₂-TiO₂ (MFST), which can be separated easily from solution by a magnet, for the removal ofmethyl 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 m²·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.

关键词: Mesoporous Fe₃O₄-SiO₂-TiO₂, Adsorption, Methyl orange, Pseudo-second order model

Abstract: The adsorption of mesoporous Fe₃O₄-SiO₂-TiO₂ (MFST), which can be separated easily from solution by a magnet, for the removal ofmethyl 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 m²·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.

Key words: Mesoporous Fe₃O₄-SiO₂-TiO₂, Adsorption, Methyl orange, Pseudo-second order model

Libo Gao, Qiang Zhang, Junyang Li, Ruiting Feng, Hongyan Xu, Chenyang Xue. Adsorption of Methyl Orange on Magnetically Separable Mesoporous Titania Nanocomposite[J]. , 2014, 22(10): 1168-1173.

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Adsorption of Methyl Orange on Magnetically Separable Mesoporous Titania Nanocomposite

Adsorption of Methyl Orange on Magnetically Separable Mesoporous Titania Nanocomposite

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