摘要
采用水热法制备了二氧化钛-氧化石墨烯(TiO2-GO)复合光催化剂,采用X射线多晶粉末衍射和扫描电镜对其性质进行了表征,并以对硝基酚为目标污染物,考察了复合光催化剂在可见光和紫外光照射下的降解性能。结果表明:GO掺杂既能提高TiO2颗粒的分散度,增加其比表面积,又能降低光生电子与空穴的复合几率,提高光催化活性。另外,GO掺杂还将TiO2的光响应范围拓展至了可见光区域。
TiO2-GO composite photocatalyst was synthesized by hydrothermal method,and XRD and SEM were employed to analyze its properties. Taking p-nitrophenol as a target pollutant,the degradation performances of TiO2-GO were investigated under visible and ultraviolet light,respectively. The results showed that introduction of GO increased the dispersion and specific surface area of TiO2,as well as reducing the photogenerated electron-hole pair recombination rate,thus improving the photocatalytic activity. In addition,the spectral response of TiO2 was also enlarged to visible range under doping with GO.
作者
勾明雷
段欣瑞
袁云霞
牛青山
Gou Minglei;Duan Xinrui;Yuan Yunxia;Niu Qingshan(School of Chemical Engineering and Pharmaceutics,Henan University of Science and Technology,Luoyang 471023;College of Food and Bioengineering,Henan University of Science and Technology,Luoyang 471023)
出处
《化工新型材料》
CAS
CSCD
北大核心
2019年第11期111-114,共4页
New Chemical Materials
基金
河南省科技攻关基金(182102310795)
河南科技大学博士科研基金(13480049)
关键词
二氧化钛
氧化石墨烯
光催化
对硝基酚
titanium dioxide
graphene oxide
photocatalysis
nitrophenol
