铌酸锰-还原氧化石墨烯复合光催化剂的构建以及可见光下降解亚甲基蓝
Fabrication of RGO-MnNb2O6 Photocatalyst with Enhanced Visible Light Efficiency in Photocatalytic Degradation of Methylene Blue
作者单位E-mail
顾巍 江苏大学化学化工学院, 镇江 212013  
严铭 江苏大学材料科学与工程学院, 镇江 212013  
孙林 江苏大学化学化工学院, 镇江 212013  
施伟东 江苏大学化学化工学院, 镇江 212013 swd1978@ujs.edu.cn 
摘要: 通过水热法和光还原方法成功地制备了铌酸锰-还原氧化石墨烯复合光催化剂。这种复合光催化剂可以明显地提高光催化降解亚甲基蓝的光催化活性,降解效率在60 min内达到了78.2%,是单体铌酸锰降解效率的2倍。通过活性物质捕获实验的研究,增强的光催化性能可以归因于还原氧化石墨烯加速了光生电子-空穴的分离效率,进而解决了低光催化活性的问题。
关键词: 铌酸锰-还原氧化石墨烯  光催化剂  亚甲基蓝  可见光
基金项目: 国家自然科学基金(No.21303074)、中国博士后科学基金(No.2015T80500)和江苏省自然科学基金(No.BK20141304)资助项目。
Abstract: RGO-MnNb2O6 photocatalysts were successfully prepared through the hydrothermal and photo-reduction processes. Compared with single MnNb2O6, the RGO-MnNb2O6 composites could significantly enhance photocatalytic activity for the degradation of methylene blue under visible light irradiation. Within 60 min, 78.2% of the methylene blue was removed by the optimum sample (3% RGO-MnNb2O6), which was about 2 times higher than that of the individual MnNb2O6. By further study based on the active species trapping experiments, the enhanced photocatalytic property could be ascribed to the crucial role of RGO, which widely accelerated the separation of photogenerated electron-hole pairs. In general, the RGO hybridized with MnNb2O6 could address the problem of low photocatalytic activity.
Keywords: RGO-MnNb2O6  photocatalyst  methylene blue  visible light
投稿时间:2016-09-13 最后修改时间:2016-12-30
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顾巍,严铭,孙林,施伟东.铌酸锰-还原氧化石墨烯复合光催化剂的构建以及可见光下降解亚甲基蓝[J].无机化学学报,2017,33(3):493-500.
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