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Proceedings Paper

Photocatalytic reduction and oxidation over some nanosized TiO2 catalysts prepared by different methods
Author(s): Yen Hoang; Linh H. Bui; Thang C. Dinh; Hoa K. Tran; Cuong M. Nguyen; Phuong T. Dang; Tuan A. Vu
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Paper Abstract

Nano-sized TiO2 samples were successfully synthesized by both methods: sol-gel and hydrothermal treatment. The samples were characterized by XRD and FESEM, TEM. The XRD results revealed TiO2 samples consisted of pure anatase phase and/or mixture of anatase-rutile phases depending on the synthesis condition. By SEM-TEM, the particle size of all TiO2 samples was ca. 20-50nm. Nanosized TiO2 samples were tested in the photocatalytic oxidation of redphenol and in the photocatalytic reduction of Cr(VI) to Cr(III). All samples were active in both reactions, however, a difference in photocatalytic activities between samples was observed. For comparison, P25 Degussa was also investigated. Photocatalytic performances of the samples were discussed.

Paper Details

Date Published: 20 December 2006
PDF: 8 pages
Proc. SPIE 6415, Micro- and Nanotechnology: Materials, Processes, Packaging, and Systems III, 64151B (20 December 2006); doi: 10.1117/12.695756
Show Author Affiliations
Yen Hoang, Vietnamese Academy of Science and Technology (Vietnam)
Linh H. Bui, Vietnamese Academy of Science and Technology (Vietnam)
Thang C. Dinh, Vietnamese Academy of Science and Technology (Vietnam)
Hoa K. Tran, Vietnamese Academy of Science and Technology (Vietnam)
Cuong M. Nguyen, Vietnamese Academy of Science and Technology (Vietnam)
Phuong T. Dang, Vietnamese Academy of Science and Technology (Vietnam)
Tuan A. Vu, Vietnamese Academy of Science and Technology (Vietnam)


Published in SPIE Proceedings Vol. 6415:
Micro- and Nanotechnology: Materials, Processes, Packaging, and Systems III
Jung-Chih Chiao; Andrew S. Dzurak; Chennupati Jagadish; David Victor Thiel, Editor(s)

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