Citation: CUI Yu-Min, HONG Wen-Shan, LI Hui-Quan, WU Xing-Cai, FAN Su-Hua, ZHU Liang-Jun. Photocatalytic Degradation and Mechanism of BiOI/Bi₂WO₆ toward Methyl Orange and Phenol[J]. Chinese Journal of Inorganic Chemistry, ;2014, (2): 431-441. doi: 10.11862/CJIC.2014.001 shu

Photocatalytic Degradation and Mechanism of BiOI/Bi₂WO₆ toward Methyl Orange and Phenol

1.
1 School of Chemistry and Chemical Engineering, Fuyang Normal College, Fuyang, Anhui 236037, China;

Corresponding author: LI Hui-Quan,
Received Date: 3 May 2013
Available Online: 8 October 2013
Fund Project:

BiOI/Bi₂WO₆ photocatalysts with various BiOIamounts were prepared by a simple deposition method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS) and low temperature nitrogen adsorption. The photocatalytic performance of BiOI/Bi₂WO₆ catalysts was evaluated using the photodegradation of methyl orange (MO) and phenol in an aqueous solution under UVand visible light irradiation. The results indicate that compared with commercial Degussa P25 and pure Bi₂WO₆, the 13.2% BiOI/Bi₂WO₆ photocatalyst shows much higher UVand visible light photocatalytic performance. The obviously increased photocatalytic activity could be mainly attributed to the effective transfer of the photogenerated electrons and holes at the interface of Bi₂WO₆ and BiOI, which reduces the recombination of electron-hole pairs. Atransfer process of photogenerated carriers is proposed based on the band structures of BiOIand Bi₂WO_6. Radical scavengers experiments demonstrate that ·OH, h⁺, ·O₂^-and H₂O₂, especially h⁺, together dominate the photodegradation process of MOand phenol.
- deposition method;BiOI/Bi₂WO₆;photocatalysis;methyl orange;phenol
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Photocatalytic Degradation and Mechanism of BiOI/Bi2WO6 toward Methyl Orange and Phenol

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通讯作者: 陈斌, bchen63@163.com

Photocatalytic Degradation and Mechanism of BiOI/Bi₂WO₆ toward Methyl Orange and Phenol