摘要
采用水热合成法制备铁基-新型有机金属框架MIL-101(Fe),并以此作为光助非均相芬顿催化剂,研究其在可见光辐照下对苯胺黑药的降解性能,通过SEM、XRD、FTIR及BET等手段表征MIL-101(Fe)材料的理化性能。以单因素试验考察pH、H2O2投加量、苯胺黑药溶液初始浓度等条件对降解苯胺黑药的影响。结果表明,MIL-101(Fe)光助芬顿体系对苯胺黑药具有较高的催化活性和稳定性。在500 W氙灯辐照下,MIL-101(Fe)材料投加量为8 mg、反应溶液30 mL、pH=7、反应140 min后,100 mg/L苯胺黑药完全降解。降解速率随苯胺黑药初始质量浓度的增加而降低,随H2O2投加量的增加而升高。自由基捕获试验证明·OH和空穴在反应体系中为主要活性物质。
The Fe-based metal organic framework MIL-101(Fe)was synthesized by hydrothermal methods and used as heterogeneous photo-fenton catalysts.In this study,the catalytic performance of prepared MIL-101(Fe)was evaluated by the degradation of aniline aerofloat under visible light.The catalysts were characterized by SEM,XRD,FITR and BET.The effects of pH,H_(2)O_(2) dosage and initial concentration of aniline aerofloat solution were investigated for the degradation of aniline aerofloat.The results show that MIL-101(Fe)photo-Fenton system has high catalytic activity and stability for aniline aerofloat degradation.The aniline aerofloat can be completely removed in 140 min when MIL-101(Fe)dosage is 8 mg,pH=7.The degradation rate reduces with the increase of the initial mass concentration of aniline aerofloat,but rises with the increase of the dosage of H_(2)O_(2).The free radical trapping test proves that·OH and generated holes are the main active substances in the reaction system.
作者
袁熙
廖荣
祝思频
王春英
罗仙平
YUAN Xi;LIAO Rong;ZHU Sipin;WANG Chunying;LUO Xianping(Jiangxi Key Laboratory of Mining and Metallurgy Environmental Pollution Control,Ganzhou 341000,Jiangxi,China;School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China)
出处
《江西理工大学学报》
2021年第4期35-41,共7页
Journal of Jiangxi University of Science and Technology
基金
2018年赣州市科技局科技创新人才计划
江西理工大学清江青年英才支持项目(JXUSTQJYX2016003)
中国博士后科学基金(2016T90967)。
