Photocatalytic reduction and oxidation over some nanosized TiO2 catalysts prepared by different methods

Yen Hoang; Linh H. Bui; Thang C. Dinh; Hoa K. Tran; Cuong M. Nguyen; Phuong T. Dang; Tuan A. Vu

doi:10.1117/12.695756

20 December 2006 Photocatalytic reduction and oxidation over some nanosized TiO₂ catalysts prepared by different methods

Yen Hoang, Linh H. Bui, Thang C. Dinh, Hoa K. Tran, Cuong M. Nguyen, Phuong T. Dang, Tuan A. Vu

Author Affiliations +

Proceedings Volume 6415, Micro- and Nanotechnology: Materials, Processes, Packaging, and Systems III; 64151B (2006) https://doi.org/10.1117/12.695756
Event: SPIE Smart Materials, Nano- and Micro-Smart Systems, 2006, Adelaide, Australia

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.

Citation Download Citation

Yen Hoang, Linh H. Bui, Thang C. Dinh, Hoa K. Tran, Cuong M. Nguyen, Phuong T. Dang, and Tuan A. Vu "Photocatalytic reduction and oxidation over some nanosized TiO₂ catalysts prepared by different methods", Proc. SPIE 6415, Micro- and Nanotechnology: Materials, Processes, Packaging, and Systems III, 64151B (20 December 2006); https://doi.org/10.1117/12.695756

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