| CuO/BiVO_4催化剂制备及其可见光降解甲苯效果研究 |
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| 引用本文： | 童玲方,;陈群华,;沈永高,;许旭敏.CuO/BiVO_4催化剂制备及其可见光降解甲苯效果研究[J].能源环境保护,2014(4):38-41. |
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| 作者姓名： | 童玲方 ;陈群华 ;沈永高 ;许旭敏 |
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| 作者单位： | [1]浙江省台州市环境保护局路桥分局,浙江台州318050; [2]浙江国辐环保科技中心,杭州310012; [3]浙江省杭州市余杭区环境保护局,浙江余杭311100 |
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| 摘 要： | 采用水热法和浸渍法制备复合催化剂CuO/BiVO4。利用紫外-可见漫反射光谱(UV-Vis-DRS)和电化学测试手段对样品进行表征。UV-Vis-DRS表征表明,CuO的负载几乎不改变BiVO4的可见光吸收范围;线性扫描伏安法(LSV)和塔菲尔(Tafel)电化学表征说明复合催化剂中异质结的形成促进了光生电子-空穴的分离,提高了催化剂的光催化活性。通过考察CuO负载对该样品在可见光下光催化矿化甲苯效果的影响,结果显示Cu含量为4.0 wt%时BiVO4矿化甲苯效果最佳,光催化降解308 mg/m3的甲苯6 h后,最高矿化率由纯BiVO4的4.1%提高到19.5%。
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| 关 键 词： | CuO BiVO4 负载 可见光 甲苯 矿化 |
PREPARATION OF CUO/BIVO4 PHOTOCATALYST AND ITS APPLICATION FOR VISIBLE-LIGHT-INDUCED PHOTOCATALYTIC DEGRADATION OF TOLUENE |
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| Institution: | TONG Ling-fang, CHEN Qun-hua ,SHEN Yong-gao, XU Xu-min (1. Zhejiang province Taizhou City Environmental Protection Bureau Luqiao branch, Taizhou, 318050; 2 Zhejiang Gongshang University, College of environmental science and technology, Hangzhou 310012) |
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| Abstract: | CuO/BiVO4 coupled semiconductor was prepared by hydrothermal method and impregnation method. The samples were characterized by UV-Vis diffuse reflectance spectroscopy （UV-Vis-DRS） and electrochemical technology. UV-Vis-DRS characterization revealed that loading CuO on BiVO4 almost did not change the absorption range. Linear sweep vohammetry （LSV） and Tafel characterization revealed that the formation of heterojunction induced the separation of electron and hole, which improved the photocatalytic activity of the samples. Photocatalytic mineralization of toluene using BiVO4 was investigated for different CuO loadings. The results showed that BiVO4 loaded with 4.0 wt% of Cu exhibited optimal visible-light photocatalytic mineralization ability. After 6 h, the mineralization of toluene at initial concentration of 308 mg/m3 was enhanced from 4.1% with pure BiVO4 to 19.5%. |
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| Keywords: | CuO/BiVO4 Loading Visible Light Toluene Mineralization |
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