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Vol. 27 No. 6 (2015): Vol 27 Issue 6

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New Insight into Enhanced Photocatalytic Activity of Magnetic MWNTs/TiO2 Nanocomposites

https://doi.org/10.14233/ajchem.2015.17760
Xiao-Jie Song
Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, P.R. China
Zhongqiong Qin
Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, P.R. China
Fan Yang
Department of Chemistry, Anhui Medical University, Hefei 230026, P.R. China
Qun-Ling Fang
School of Medical Engineering, Hefei University of Technology, Hefei 230009, P.R. China
Han-Mei Hu
Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, P.R. China
Qiang Zheng
Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, P.R. China

Corresponding Author(s) : Fan Yang

fyang99@mail.ustc.edu.cn, sxjie2001@ahjzu.edu.cn

Asian Journal of Chemistry, Vol. 27 No. 6 (2015): Vol 27 Issue 6

Abstract

Using the carbon nanotubes as carrier and tetrabutyl titanate as precursor, MWNTs/TiO2 nanocomposites are prepared by a sol-gel method,then MWNTs/TiO2/Fe3O4 nanocomposites (magnetic MWNTs/TiO2 nanocomposites) are prepared by a co-precipitation method. The sample is characterized by X-ray powder diffraction, scanning electron microscopy, energy dispersive spectroscopy and transmission electron microscopy. The photocatalytic experiments of MWNTs/TiO2/Fe3O4 nanocomposites are carried out using methyl orange aqueous solution as model pollutant under ultraviolet light. The results indicate that the photocatalytic activity of MWNTs/TiO2/Fe3O4 nanocomposites is the best as the content of MWNTs is about 23 % in MWNTs/TiO2 nanocomposites. The degradation ratio of methyl orange can reach 95 % in 4 h at pH 3. With the help of Fe3O4, MWNTs/TiO2/Fe3O4 nanocomposites can be quickly separated from solution under strong outer magnetic field and used repeatedly.

Keywords

Magnetism MWNTs/TiO2/Fe3O4 Nanocomposites Photocatalysis Methyl orange
Song, X.-J., Qin, Z., Yang, F., Fang, Q.-L., Hu, H.-M., & Zheng, Q. (2015). New Insight into Enhanced Photocatalytic Activity of Magnetic MWNTs/TiO2 Nanocomposites. Asian Journal of Chemistry, 27(6), 2096–2098. https://doi.org/10.14233/ajchem.2015.17760
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