共价有机框架负载的磷钼钨多酸催化降解苯酚  

Degradation of phenol catalyzed by H3PMo9W3O40@EB⁃COF

作　　者：卢雪 赵云龙 李光明[1] LU Xue;ZHAO Yunlong;LI Guangming(School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,China)

机构地区：[1]黑龙江大学化学化工与材料学院,哈尔滨150080

出　　处：《黑龙江大学工程学报(中英俄文)》2024年第4期1-11,共11页Journal of Engineering of Heilongjiang University

基　　金：国家自然科学基金项目(21502046);中央支持地方高校改革发展资金高层次人才项目(2020-2022)

摘　　要：通过离子交换策略将Keggin型杂多酸H_(3)PMo_(9)W_(3)O_(40)负载到EB-COF的纳米孔道中,成功制备了H_(3)PMo_(9)W_(3)O_(40)@EB-COF复合材料。通过FT-IR、TGA、XPS、SEM、EDX和N2吸附-脱附等手段对H_(3)PMo_(9)W_(3)O_(40)@EB-COF的结构和组成进行了表征,证实了H_(3)PMo_(9)W_(3)O_(40)在EB-COF孔道中的均匀分布。进一步研究了该复合材料作为非均相催化剂在苯酚降解中的催化性能。结果表明,以H_(3)PMo_(9)W_(3)O_(40)@EB-COF为催化剂,O_(2)为氧化剂,苯酚的降解效率可达95%以上。此外,该催化剂在苯酚降解实验中表现出良好的稳定性和可循环性,并通过EPR测试验证了该反应为自由基机理。The Keggin⁃type H_(3)PMo_(9)W_(3)O_(40)was successfully loaded into the nanoporous channels of EB⁃COF by ion exchange strategy,resulting in the preparation of H_(3)PMo_(9)W_(3)O_(40)@EB⁃COF.The structure and composition of H_(3)PMo_(9)W_(3)O_(40)@EB⁃COF were characterized by FT⁃IR,TGA,XPS,SEM,EDX,and N2 adsorption⁃desorption techniques,confirming the uniform distribution of H_(3)PMo_(9)W_(3)O_(40)within the EB⁃COF pores.The catalytic performance of the composite as a heterogeneous catalyst for phenol degradation was subsequently investigated.The results demonstrated that,with H_(3)PMo_(9)W_(3)O_(40)@EB⁃COF as the catalyst and O_(2) as the oxidant,the degradation efficiency of phenol exceeded 95%.Moreover,the catalyst exhibited good stability and recyclability in phenol degradation experiment.The reaction mechanism,involving free radicals,was further verified by EPR test.

关 键 词：POMs@COFs 非均相催化 苯酚降解 

分 类 号：O611.63[理学—无机化学]