研究报告
张俊磊,张丽莎,鞠小逖,柳建设.Bi2MoO6-Pt异质结的制备及其光催化性能研究[J].环境科学学报,2016,36(6):2050-2058
Bi2MoO6-Pt异质结的制备及其光催化性能研究
- Study on the fabrication and photocatalytic properties of Bi2MoO6-Pt heterojunction
- 基金项目:国家自然科学基金(No.21377023,21477019);中央高校科研基金;东华大学硕士研究生学位论文创新基金(No.EG2015057)
- 张俊磊
- 国家环境保护纺织污染防治工程技术中心, 东华大学环境科学与工程学院, 上海 201620
- 张丽莎
- 国家环境保护纺织污染防治工程技术中心, 东华大学环境科学与工程学院, 上海 201620
- 鞠小逖
- 国家环境保护纺织污染防治工程技术中心, 东华大学环境科学与工程学院, 上海 201620
- 柳建设
- 国家环境保护纺织污染防治工程技术中心, 东华大学环境科学与工程学院, 上海 201620
- 摘要:采用"溶剂热-光还原"法成功制备出Bi2MoO6-Pt异质结光催化剂.该催化剂由Bi2MoO6三维微球(直径:1~4μm)和Pt纳米颗粒(~2.5 nm)组成.本文以罗丹明B(RhB)和4-氯酚(4-CP)为目标污染物研究了该异质结的可见光光催化性能.Bi2MoO6-Pt异质结的光催化活性明显高于纯Bi2MoO6,Pt的最佳负载量为0.3 wt%.同时,Bi2MoO6-Pt-2异质结(Pt的负载量为0.3 wt%)也可以有效地矿化有机污染物.更重要的是,Bi2MoO6-Pt-2异质结具有良好的稳定性,可以被重复使用.
- Abstract:Bi2MoO6-Pt heterojunctions have been prepared via a solvothermal-photoreduction method. It consists of three-dimensional Bi2MoO6 microspheres with diameters ranging from 1 to 4 μm and Pt nanoparticles with the mean size of 2.5 nm. The photocatalytic activity and stability of Bi2MoO6-Pt heterojunctions have been evaluated by the photocatalytic degradation of rhodamine B (RhB) and parachlorophenol (4-CP) under visible-light irradiation (λ>400 nm).As a result, Bi2MoO6-Pt heterojunctions exhibit higher photocatalytic activity than that of pure Bi2MoO6, and Bi2MoO6-Pt-2 (the loading content of Pt is 0.3 wt%) obtains the highest degradation efficiency. The recycling experiment confirms that it is essentially stable during the photocatalytic reaction process.
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