摘要
采用热聚合/液相法制备四种含量不同的g-C_(3)N_(4)/BiOBr光催化剂,并研究了其降解盐酸四环素(TCH)的性能和途径。研究表明,四种g-C_(3)N_(4)/BiOBr复合材料对TCH的光降解效率均高于商品g-C_(3)N_(4)催化剂;2D/2D结构的4-g-C_(3)N_(4)/BiOBr表现出最高的光利用率和最佳的光催化活性;光反应60 min内对TCH的去除率为94.61%、降解率为93.29%,其拟合的表观反应速率常数最高(0.037 min^(-1)),是商品g-C_(3)N_(4)的1.68倍,且循环利用5次后对TCH的降解率仍可达83.67%;此外,对g-C_(3)N_(4)/BiOBr光催化剂降解TCH的反应机理进行了分析。
g-C_(3)N_(4)/BiOBr photocatalyst was prepared by thermal polymerization/liquid phase method and the degradation performance of g-C_(3)N_(4)/BiOBr photocatalyst and its degradation pathway were studied.The results showed that the photodegradation efficiency of four kinds of g-C_(3)N_(4)/BiOBr composites to TCH was higher than that of commercial g-C_(3)N_(4).Besides,4-g-C_(3)N_(4)/BiOBr with 2D/2D structure showed the highest UV/visible light utilization and the best photocatalytic activity.For example,the removal rate and degradation rate of TCH were 94.61%and 93.29%within 60 min,and the fitted apparent reaction rate constant was the highest(0.037 min^(-1)),which was 1.68 times that of commercial g-C_(3)N_(4),and the degradation rate of TCH could still reach 83.67%after five times of recycling.In addition,the mechanism of TCH solution by g-C_(3)N_(4)/BiOBr photocatalyst was analyzed.
作者
阮治政
黄达华
王丽伟
贺慧穗
RUAN Zhi-zheng;HUANG Da-hua;WANG Li-wei;HE Hui-sui(School of Marine Sciences,Guangxi University,Guangxi Nanning 530004;Guangxi Laboratory on the Study of Coral Reefs in the South China Sea,Guangxi Nanning 530004,China)
出处
《广州化工》
CAS
2023年第22期34-37,共4页
GuangZhou Chemical Industry
基金
广西壮族自治区大学生创新创业训练计划项目(No:S202110593173)
2019年度广西高等教育本科教学改革工程项目“高校《海洋化学基础实验》课程教学中的改革与探索”(No:2019JGB122)。
