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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 被引量：8

Fabrication of Rodlike BiVO_4/Graphene Oxide Photocatalyst with Highly Visible-Light Photocatalytic Activity
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摘要 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。 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.
作者 戴高鹏 刘金巧 刘素芹 梁英 黄细萍
机构地区 湖北文理学院化学工程与食品科学学院 湖北省低维光电材料与器件重点实验室
出处 《硅酸盐学报》 EI CAS CSCD 北大核心 2012年第10期1456-1460,共5页 Journal of The Chinese Ceramic Society
基金 湖北省自然科学基金(2011CDA066) 湖北省教育厅项目(T201215 Q20122507 Z20102601)资助
关键词 钒酸铋/氧化石墨烯 光催化剂 可见光 bismuth orthovanadate/graphene oxide photocatalyst visible light
分类号 O643 [理学—物理化学]
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参考文献24

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硅酸盐学报
2012年 第10期

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