摘要
通过湿浸渍法制备出了Cu_(2)O/BiFeO_(3)可见光响应型异质结光催化剂,将它们用于光催化还原去除水溶液中的U(Ⅵ),并研究了复合光催化剂在不同条件下的光催化效果。通过扫描电子显微镜(SEM)、X射线能谱分析(EDS)和紫外可见漫反射分析(UV-Vis)法对催化剂材料进行了表征分析。结果表明,在溶液pH为5,U(Ⅵ)的初始浓度为5mg/L,空穴捕获剂用量为8%的条件下,Cu_(2)O质量分数为15%时Cu_(2)O/BiFeO_(3)异质结光催化剂对溶液中U(Ⅵ)的催化还原速率最快,反应到100min时去除率达到99%。
The visible light-responsive heterojunction photocatalysts Cu_(2)O/BiFeO_(3) were prepared by wet impregnation method.The photocatalysts was used in the experiment of photocatalytic reduction and removal of U(Ⅵ) in aqueous solution,and studied their photocatalytic effects under different conditions.Through scanning electron microscopy(SEM),X-ray energy spectrum(EDS) and UV-visible diffuse reflectance(UV-Vis) to characterize and analyzed the catalyst materials.The results shown that under the condition of pH=5,the initial concentration of U(Ⅵ) was 5 mg/L,and the amount of hole trapping agent was 8%,the Cu_(2)O/BiFeO_(3) photocatalyst with 15% Cu_(2)O ratio had the fastest catalytic reduction rate of U(Ⅵ).The removal rate reached 95% when the reaction time was 100 min.
作者
刘宸
李小燕
Liu Chen;Li Xiaoyan(No.203 Research Institute of Nuclear Industry,Xi'an 712000;East China University of Technology,Nanchang 330013)
出处
《化工新型材料》
CAS
CSCD
北大核心
2022年第7期199-203,共5页
New Chemical Materials
基金
国家自然科学基金资助项目(41761090、11465002)
江西省自然科学基金资助项目(20171ACB2021)
国家重点实验室资助项目(NRE1608)。
