SCI和EI收录∣中国化工学会会刊

›› 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 Gao1,2, Qiang Zhang1,2, Junyang Li1,2, Ruiting Feng1,2, Hongyan Xu3, Chenyang Xue1,2   

  1. 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 Gao1,2, Qiang Zhang1,2, Junyang Li1,2, Ruiting Feng1,2, Hongyan Xu3, Chenyang Xue1,2   

  1. 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: 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