2.武汉理工大学资源与环境工程学院,武汉 430070
1.School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
2.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
复合催化剂,并对其光催化活化过一硫酸盐(PMS)去抗生素盐酸四环素(TC-HCl)的性能进行了探究。分别运用XRD、XPS、FESEM、UV-Vis DRS等技术对催化剂进行了结构以及形貌的表征。考察了PMS浓度、催化剂投加量及pH对TC-HCl去除的影响。结果表明:CuO的掺杂有利于提高Bi
和·OH是催化降解TC-HCl的主要活性物种;该复合催化剂具有很好的稳定性。以上研究结果可为探索新型非均相催化剂在抗生素废水处理的应用提供参考。
composite catalyst based on visible light response was synthesized by co-precipitation-impregnating method, then its photocatalytic-activated peroxymonosulfate (PMS) and BPA degradation were evaluated. The structure and morphology of the catalyst were analyzed by XRD, XPS, FESEM, and UV-Vis DRS. The effects of the operational parameters including PMS concentration, catalyst dosage, and pH on photocatalytic degradation of TC-HCl were investigated. The results showed that doping CuO was beneficial to improve the visible light catalytic performance of Bi
and also enhance the activation of PMS. Under the conditions such as the catalyst dosage of 0.2 g·L
composite catalyst. The quenching experiments of free radicals demonstrated that
and ·OH were the main active species for catalytic degradation of TC-HCl. The cycle experiments proved that the composite catalyst had good stability. The research can provide reference for exploring the application of new heterogeneous catalysts in antibiotic wastewater treatment.
.
XPS spectra of catalysts
Curves of TC-HCl degradation by different systems
TOC degradation effects of TC-HCl by different systems
TC-HCl degradation rate constants for different systems
Effects of catalyst dosage on the degradation of TC-HCl
Effect of different pH on the degradation of TC-HCl
particle at different pH
Effect of different radical scavengers on the degradation of TC-HCl
+Vis+PMS体系降解TC-HCl的可能机理图
+Vis+PMS体系中降解TC-HCl的质谱
Degradation pathway of TC-HCl
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