Title: Study on photocatalytic activity of TiO2 and non-metal doped TiO2 in Rhodamine B degradation under visible light irradiation

Authors: Tuan A. Vu; Canh D. Dao; Thuy T.T. Hoang; Giang H. Le; Kien T. Nguyen; Phuong T. Dang; Hoa T.K. Tran; Tuyen V. Nguyen

Addresses: Department of Surface Science and Catalysis, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay District, Hanoi City, Vietnam ' Department of Surface Science and Catalysis, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay District, Hanoi City, Vietnam ' Department of Surface Science and Catalysis, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay District, Hanoi City, Vietnam ' Department of Surface Science and Catalysis, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay District, Hanoi City, Vietnam ' Department of Surface Science and Catalysis, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay District, Hanoi City, Vietnam ' Department of Surface Science and Catalysis, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay District, Hanoi City, Vietnam ' Department of Surface Science and Catalysis, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay District, Hanoi City, Vietnam ' Department of Surface Science and Catalysis, Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay District, Hanoi City, Vietnam

Abstract: Highly active photocatalytic TiO2 nanotubes were successfully synthesised by hydrothermal treatment in base medium using commercial TiO2 powder as Ti-source. Non-metal doped TiO2 samples were made by post-synthesis using urea, thio-urea, ammonium fluoride and ethylene glycol as N, S F and C source. The obtained samples were characterised by XRD, FE-SEM, UV-Vis. Photocatalytic activities of the samples were tested in photocatalytic degradation of Rhodamine B and Methylene Blue in liquid phase under visible light irradiation. Both TiO2 nanotubes and doped samples showed high photocatalytic activities in both the Rhodamine B and Methylene Blue degradation. However, non-metal doped TiO2 samples exhibited much higher photocatalytic activity under visible light irradiation as compared to that of non doped TiO2 sample, indicating high photocatalytic performance of non-metal doped TiO2 photocatalysts under visible light irradiation.

Keywords: TiO2 nanotubes; non-metal doped TiO2; photocatalytic activity; visible light irradiation; titania; nanotechnology; hydrothermal treatment; Rhodamine B; Methylene Blue.

DOI: 10.1504/IJNT.2013.053137

International Journal of Nanotechnology, 2013 Vol.10 No.3/4, pp.235 - 246

Available online: 05 Apr 2013 *

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