Ag2O/TiO2异质结的光催化活性及耐光腐蚀性研究

被引:7
作者
杨慧娟 [1 ,2 ,3 ]
邵铭哲 [1 ,2 ,3 ]
周健兴 [1 ,2 ,3 ]
薛晋波 [1 ,2 ,3 ]
机构
[1] 太原理工大学新材料界面科学与工程教育部重点实验室
[2] 太原理工大学新材料工程技术研究中心
[3] 太原理工大学材料科学与工程学院
关键词
TiO2纳米棒阵列; Ag2O/TiO2; Ag-Ag2O/TiO2; 光催化;
D O I
10.16553/j.cnki.issn1000-985x.2017.02.009
中图分类号
O643.36 [催化剂];
学科分类号
摘要
以钛酸丁酯、硝酸铋和硝酸银为原料,FTO为基底,采用水热法结合超声沉积法合成了Ag2O/TiO2异质结光催化剂。采用场发射扫描电子显微镜(FESEM)、X射线衍射仪(XRD)、紫外-可见吸收光谱(UV-Vis)分析测试手段对样品的形貌和结构进行了表征。结果表明,Ag2O/TiO2异质结是由直径约200~300 nm的TiO2纳米棒镶嵌着Ag2O纳米颗粒组成,与TiO2纳米棒阵列相比,Ag2O/TiO2异质结在可见光区有明显的光吸收。Ag2O/TiO2异质结的光催化效率明显提高。尤为重要的是,经光处理后,最终得到稳定的Ag-Ag2O/TiO2三元体系,并对Ag-Ag2O/TiO2三元体系提高光催化稳定性和活性的机理进行了分析。
引用
收藏
页码:243 / 250
页数:8
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