高可见光活性的棒状钒酸铋/氧化石墨烯复合光催化剂的制备

通过水热法制备了棒状钒酸铋/氧化石墨烯（BiVO4/GO）复合可见光光催化剂。用扫描电子显微镜、X射线衍射、Raman光谱和紫外–可见漫反射光谱表征了所制备的样品。在可见光（λ≥420nm）光照下光催化降解亚甲基蓝水溶液来检测样品的活性。结果表明：氧化石墨烯的加入有效地提高了BiVO4的可见光光催化活性,含1%（质量分数）的氧化石墨烯的复合光催化剂活性最好。BiVO4/GO活性增强的原因是氧化石墨烯能快速捕获并转移光生电子,有效提高BiVO4光生载流子的分离效率,从而提高其光催化活性。...

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Published in硅酸盐学报 Vol. 40; no. 10; pp. 1456 - 1460
Main Author 戴高鹏 刘金巧 刘素芹 梁英 黄细萍
Format Journal Article
LanguageChinese
Published 2012
Subjects
光催化剂
可见光
钒酸铋/氧化石墨烯
Online AccessGet full text
ISSN0454-5648

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Summary:通过水热法制备了棒状钒酸铋/氧化石墨烯（BiVO4/GO）复合可见光光催化剂。用扫描电子显微镜、X射线衍射、Raman光谱和紫外–可见漫反射光谱表征了所制备的样品。在可见光（λ≥420nm）光照下光催化降解亚甲基蓝水溶液来检测样品的活性。结果表明：氧化石墨烯的加入有效地提高了BiVO4的可见光光催化活性,含1%（质量分数）的氧化石墨烯的复合光催化剂活性最好。BiVO4/GO活性增强的原因是氧化石墨烯能快速捕获并转移光生电子,有效提高BiVO4光生载流子的分离效率,从而提高其光催化活性。
Bibliography:A rod-like BiVO4/graphene oxide（BiVO4/GO） photocatalyst was prepared by a facile hydrothermal method.The photocatalyst was characterized by scanning electron microscopy,X-ray diffraction,Raman spectroscopy and UV–Vis absorption spectroscopy,respectively.The photocatalytic activity was evaluated by oxidation of methyl blue（MB） under a visible-light irradiation.The results show that the visible-light photocatalytic activity of BiVO4/GO is enhanced in the presence of GO,the photoactivity of BiVO4/GO with GO of 1%（in mass） was greater than that of other samples.The enhanced visible-light photocatalytic activity of BiVO4/GO was attributed to the synergetic effect of strongly visible-light absorption of BiVO4and highly electronic captureablity of graphene oxide.
DAI Gaopeng1,2,LIU Jinqiao1,LIU Suqin1,LIANG Ying1,HUANG Xiping1（1.Department of Chemical Engineering and Food Science,Hubei University of Arts and Science,Xiangyang 441053,Hubei,China;2.Hubei Key Laboratory of Low Dimensional Opotoelectronic Materials and D
ISSN:0454-5648