Visible Light Photocatalytic Degradation of Methylene Blue over N-Doped TiO2

Yu Long Hu; Li Qing Zhou; Hong Fang Liu; Xing Peng Guo

doi:10.4028/www.scientific.net/KEM.609-610.141

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 609-610Visible Light Photocatalytic Degradation of...

Visible Light Photocatalytic Degradation of Methylene Blue over N-Doped TiO₂

Abstract:

The visible light photocatalytic degradation of methylene blue (MB) over N-doped TiO₂ (N-TiO₂) was investigated. The intermediate products of MB in the photocatalytic degradation process were analyzed by HPLC-MS technique. The results show that the cleavages of CS⁺=C and CN=C functional group in the central aromatic ring and the cleavage of N-C bond between the methyl group and nitrogen atom all can occur in the visible light photocatalytic degradation process over N-TiO₂, but MB is difficult to be mineralized completely to the inorganic products. A detailed degradation pathway of MB has been proposed on the basis of a careful identification of intermediate products.

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Key Engineering Materials (Volumes 609-610)

Pages:

141-146

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.609-610.141

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Online since:

April 2014

Authors:

Yu Long Hu*, Li Qing Zhou, Hong Fang Liu, Xing Peng Guo

Keywords:

HPLC-MS Analysis, Intermediate Products, Methylene Blue, N-Doped TiO₂, Visible Light Photocatalytic Degradation

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