Preparation and Photocatalytic Activity of N-TiO2/Sepiolite Nanocomposite

Abstract:

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To utilize visible light and separate of TiO2 nanoparticles more efficiently in photocatalytic reactions, nitrogen doped TiO2/sepiolite composites (N-TiO2/sep) with different nitrogen contents were prepared by a sol-gel method and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis spectroscopy. XRD showed that anatase-TiO2 nanoparticles were loaded on the surface of sepiolite. XPS revealed that N atoms could incorporate into the lattice of anatase TiO2 substituting the sites of oxygen atoms. UV-vis spectroscopy showed that the visible light absorption of N-TiO2/sep samples decreased with the increase of calciantion temperature and increased with the increase of N content. The photocatalytic activities of obtained N-TiO2/sep samples were evaluated by methylene blue degradation under visible light irradiation. It was found that the N-TiO2/sep samples had the higher photocatalytic activity than that of TiO2/sep.

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Periodical:

Edited by:

Ran Chen

Pages:

85-90

DOI:

10.4028/www.scientific.net/MSF.694.85

Citation:

D. M. Chen et al., "Preparation and Photocatalytic Activity of N-TiO2/Sepiolite Nanocomposite", Materials Science Forum, Vol. 694, pp. 85-90, 2011

Online since:

July 2011

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Price:

$35.00

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