Effect of Multiwalled Carbon Nanotubes on the Photocatalytic Degradation of Methyl Orange in Aqueous Solution Under Visible Light Irradiation

Ya Yan School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China

Huiping Sun School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China

Li Zhang School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China

Jing Zhang School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. China

Jin Mu School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, P. R. ChinaCorrespondence[email protected]

Shi-Zhao Kang Department of Chemical Engineering, Shanghai Institute of Technology, Shanghai, P. R. China

Abstract

Multiwalled carbon nanotubes (MWNTs) as a usual supporter were directly used as a visible light photocatalyst for the degradation of methyl orange (MO) in aqueous solution. The MWNTs exhibited high photocatalytic activity for the degradation of MO under visible light irradiation. Moreover, the photocatalytic activity of MWNTs was greatly enhanced when Pt nanoparticles were loaded on the surface of MWNTs. In order to understand the photocatalytic behavior of MWNTs, the electrochemical impedance spectra and the adsorption characterization of MWNTs were investigated. On the basis of these experiments, a possible visible light photocatalytic degradation mechanism was discussed.

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Acknowledgments

This work was financially supported by the National High Technology Research and Development Program of China (No. 2009AA05Z101).

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Effect of Multiwalled Carbon Nanotubes on the Photocatalytic Degradation of Methyl Orange in Aqueous Solution Under Visible Light Irradiation

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Effect of Multiwalled Carbon Nanotubes on the Photocatalytic Degradation of Methyl Orange in Aqueous Solution Under Visible Light Irradiation

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