Ag修饰N-石墨烯/TiO2纳米复合材料的光催化活性

人工晶体学报, 2015, 44(6): 1683-1689.

Ag修饰N-石墨烯/TiO2纳米复合材料的光催化活性

周民杰 ^1, , 付碧松 ^2, , 张娜 ^3, , 侯朝辉 ^4,

1.湖南理工学院化学化工学院,岳阳,414006

2.湖南理工学院化学化工学院,岳阳,414006

3.湖南理工学院化学化工学院,岳阳,414006

4.湖南理工学院化学化工学院,岳阳,414006

基金项目: 国家自然科学基金(51272075,51372080) 中国博士后基金(2012M51220)

关键词：石墨烯/TiO2 , 溶剂热法 , 光催化还原法 , 产氢

Photocatalytic Activity of N Doped Graphene/TiO2 Nanocomposites Modified by Ag

Keywords： graphene/TiO2 , solvent thermal method , photocatalytic reduction method , hydrogen evolution

采用一步溶剂热法与光催化还原法制备了Ag修饰N掺杂石墨烯/TiO2纳米复合材料,用XRD、SEM、FT-IR、XPS和UV-Vis DRS等技术对样品进行了表征,实验考察了复合材料在模拟太阳光下光催化产氢活性,分析讨论了其光催化产氢反应机理.结果表明,该纳米复合材料具有显著的光催化活性,模拟太阳光照射下10 h内样品的产氢量达到1132.54 μmol,比纯TiO2的产氢量提高了4.3倍,Ag和N掺杂石墨烯的协同效应提高了TiO2半导体的光催化活性和量子效率.

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材料期刊网

Ag修饰N-石墨烯/TiO2纳米复合材料的光催化活性

Photocatalytic Activity of N Doped Graphene/TiO2 Nanocomposites Modified by Ag

参考文献