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Journal of Nanomaterials
Volume 2017, Article ID 6092195, 7 pages
Research Article

TiO2 Nanotubes with Different Ag Loading to Enhance Visible-Light Photocatalytic Activity

1University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Vietnam
2Dong Thap University, 783 Pham Huu Lau Street, Ward 6, Cao Lanh City, Dong Thap Province, Vietnam
3PetroVietnam University, 762 Cach Mang Thang Tam Street, Long Toan Ward, Ba Ria City, Ba Ria-Vung Tau Province, Vietnam

Correspondence should be addressed to Nguyen Dang Nam; nv.ude.uvp@dnman and Thi Hanh Thu Vu; moc.liamg@9791uhthnahihtuv

Received 8 March 2017; Revised 17 May 2017; Accepted 24 May 2017; Published 25 July 2017

Academic Editor: Bo Tan

Copyright © 2017 Thi Ngoc Tu Le et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An improved photocatalytic activity of semiconductor materials using incorporation of the noble metals such as Ag, Au, and Pt is a promising technology. In this study, Ag nanoparticle-TiO2 nanotube structures (Ag-TNTs) have been investigated as a photocatalyst in different irradiation conditions using different characterization techniques. The results indicate that Ag nanoparticles dispersed uniformly on the TNTs’ surface without any change in TNTs’ morphology. In addition, Ag-TNTs exhibited lower photoactivity than the TNTs under UV irradiation. In contrast, Ag-TNTs increased the photoactivity in comparison with TNTs and the photocatalytic performance under sunlight irradiation. These phenomena could be contributed to the appearance of Ag nanoparticles on the nanotube surface.