摘要
通过溶剂热法成功合成了一系列不同掺杂比的Cu2O/Bi2MoO6复合纳米光催化剂,利用X射线衍射(XRD)、拉曼(Raman)光谱、透射电子显微镜(TEM)、X射线光电子能谱(XPS)和紫外—可见漫反射光谱(DRS)等手段对所得产物进行表征。以染料结晶紫为模拟污染物,研究了所合成产物的光催化性能。结果表明,Cu、Mo摩尔比为0.08的复合纳米光催化剂的光催化效率最高,可见光照射100min对结晶紫溶液的降解率可达95.60%。此外,探讨了Cu2O掺杂量对光催化剂性能的影响,提出了可能的光催化反应机制。
A coupled system of Cu2O/Bi2MoO6 with enhanced visible-light photocatalytic activity was successfully synthesized using ethylene glycol （EG） as a solvent. The products were characterized by X-ray power diffraction （XRD） ,Raman spectrum, transmission electron microscopy （TEM）, X-ray photoelectron spectroscopy （XPS）, and UV-vis diffuse reflection spectrum （DRS） in detail. The photocatalytic activity of the samples was evaluated using crystal violet （CV） as a model organic pollution. As a result,the sample with the mole ratio of Cu/Mo 0.08 exhibited the excellent visible-light-driven photocatalytic performance, and the degradation ratio of crystal violet reached 95.60% within 100 rain. The effects of the amount of cuprous oxide on catalytic activity of the as-synthesized Cu2O/Bi2 MoO6 were investigated and the possible reaction mechanism of the system was proposed.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2015年第2期63-67,73,共6页
Environmental Pollution & Control
基金
国家自然科学基金资助项目(No.21171002)
安徽省自然科学基金资助项目(No.11040606M55)
安徽省教育厅自然科学基金资助项目(No.KJ2010A015)
安徽大学研究生学术创新研究项目(No.01001770-10117700078)
安徽大学大学生科研训练计划项目(No.kyxl2013014)
关键词
CU2O
Bi2MoO4光催化结晶紫
cuprous oxide
bismuth molybdate
photocatalytic activity
crystal violet
