Journal
NANOMATERIALS AND NANOTECHNOLOGY
Volume 2, Issue -, Pages -Publisher
SAGE PUBLICATIONS LTD
DOI: 10.5772/55318
Keywords
Semiconductors; Nanocrystals; Photocatalysts; Absorption; Irradiation
Funding
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [103.02-2011.12]
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TiO2 and vanadium-doped TiO2 nanoparticles were synthesized by using the hydrothermal method. The V doping contents are 0.0; 0.1; 0.3; 0.5; 0.7 and 0.9% molar. The vanadium-doped TiO2 nanoparticles have identical anatase phase with an average crystal size of 10-20nm. The oleic acid and ethanol solvents with different molar concentrations can make spherical nanograins, or stick form grains, which influence the photo activity of the materials. The absorption spectra of doped samples exhibited long-tailed absorption in the visible light region above 380nm. The visible light photocatalytic activity was evaluated by the degradation of phenol aqueous solutions; after 360 min. under the visible irradiation, the normalized concentration of phenol decreased to 9%.
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