Visible Light-Driven Photocatalytic Activity of Oleic Acid-Coated TiO2 Nanoparticles Synthesized from Absolute Ethanol Solution.
The one-step synthesis of oleic acid-coated TiO2 nanoparticles with visible light-driven photocatalytic activity was reported by this manuscript, using oleic acid-ethanol as crucial starting materials. The photocatalytic degradation of nitrogen monoxide (deNOx) in the gas phase was investigated in a continuous reactor using a series of TiO2 semiconductors, prepared from oleic acid- or acetic acid-ethanol solution. The surface modification on TiO2 by organic fatty acid, oleic acid, could reinvest TiO2 photocatalyst with the excellent visible light response. The deNOx ability is almost as high as 30 % destruction in the visible light region (λ > 510 nm) which is similar to the nitrogen-doped TiO2. Meanwhile, acetic acid, a monobasic acid, has a weaker ability on visible light modification of TiO2.
Key Laboratory for Magnetism Magnetic Materials of the Ministry of Education, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, People's Republic of China. lihh@lzu.edu.cn.
Huihui
H
Li
Key Laboratory for Magnetism Magnetic Materials of the Ministry of Education, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, People's Republic of China. liubin@lzu.edu.cn.
Bin
B
Liu
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan. shuyin@tagen.tohoku.ac.jp.
Shu
S
Yin
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan. tsusato@tagen.tohoku.ac.jp.
Tsugio
T
Sato
Key Laboratory for Magnetism Magnetic Materials of the Ministry of Education, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, People's Republic of China. wyh@lzu.edu.cn.
Yuhua
Y
Wang
Oleic acid; Photocatalysis; Surface modification; TiO2; Visible light