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Citation: CHEN Qi-Yuan, TONG Hai-Xia, YIN Zhou-Lan, HU Hui-Ping, LI Jie, LIU Liang-Liang. Preparation, Characterization and Photo-catalytic Behavior of TiO₂ Catalysts with Oxygen Vacancies[J]. Acta Physico-Chimica Sinica, ;2007, 23(12): 1917-1921. doi: 10.3866/PKU.WHXB20071216 shu

Preparation, Characterization and Photo-catalytic Behavior of TiO₂ Catalysts with Oxygen Vacancies

1.
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China

Received Date: 14 June 2007
Available Online: 21 September 2007

The rutile TiO2 catalysts with oxygen vacancies were obtained under 927 ℃calcination using a mixed gas of saturation water vapor and H2 at 69 ℃. The catalysts were identified using X-ray diffraction (XRD), specific surface (BET), electron paramagnetic resonance spectroscopy (EPR), UV-Vis diffuse refraction spectroscopy (DRS), and X-ray photoelectron spectrum (XPS) measurements. The effect of calcination time on photocatalytic activity of TiO2 with different oxygen vacancies for O2 evolution was studied. The result indicated that appropriate oxygen vacancies could obviously improve the photocatalytic activity of rutile TiO2. The maximumO2 evolution speed of rutile TiO2 with oxygen vacancies was 222 μmol·L-1·h-1.
- TiO2; Calcination; Oxygen vacancies; Photocatalytic activity
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沈阳化工大学材料科学与工程学院沈阳 110142

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Preparation, Characterization and Photo-catalytic Behavior of TiO2 Catalysts with Oxygen Vacancies

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通讯作者: 陈斌, bchen63@163.com

Preparation, Characterization and Photo-catalytic Behavior of TiO₂ Catalysts with Oxygen Vacancies