An Inexpensive, Stable and Highly Efficient Photocatalyst for Degradation of Organic Dyes in Water: Core-Shell Montmorillonite-TiO₂ Colloids

Abstract:

Core-shell montmorillonite-TiO₂ colloids were prepared in a hydrothermal process and characterized with transmission electron microscope, powder X-ray diffraction analysis, Brunauer-Emmett-Teller analysis and UV-vis spectra. Afterwards, their photocatalytic activity was investigated under UV irradiation using methyl orange as a model contaminant. In addition, the stability of the core-shell montmorillonite-TiO₂ colloids was investigated by repeatedly performing methyl orange photocatalytic degradation experiments. The results indicate the as-prepared core-shell montmorillonite-TiO₂ colloids are a highly efficient photocatalyst for the degradation of organic dyes in water. And this photocatalytic activity remains almost unchanged after eight successive cycles.

• Periodical: Advanced Materials Research (Volumes 864-867)
• Pages: 404-407
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.864-867.404
• Online since: December 2013
• Authors: Shi Zhao Kang, Tan Wu, Xiang Qing Li, Yi Lun Zhou, Jin Mu*
• Keywords: Core-Shell Structure, Degradation, Montmorillonite, Photocatalysis, TiO₂

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DOI: 10.1039/b404584j