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
卢雪 1赵云龙 1李光明1
作者信息
- 1. 黑龙江大学化学化工与材料学院,哈尔滨 150080
- 折叠
摘要
通过离子交换策略将Keggin型杂多酸H3PMo9W3O40负载到EB-COF的纳米孔道中,成功制备了H3PMo9W3O40@EB-COF复合材料.通过 FT-IR、TGA、XPS、SEM、EDX 和 N2吸附-脱附等手段对H3PMo9W3O40@EB-COF的结构和组成进行了表征,证实了 H3PMo9W3O40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H3PMo9W3O40@EB-COF为催化剂,O2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.
Abstract
The Keggin-type H3PMo9W3O40 was successfully loaded into the nanoporous channels of EB-COF by ion exchange strategy,resulting in the preparation of H3PMo9W3O40@EB-COF.The structure and composition of H3PMo9W3O40@EB-COF were characterized by FT-IR,TGA,XPS,SEM,EDX,and N2 adsorption-desorption techniques,confirming the uniform distribution of H3PMo9W3O40 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 H3PMo9W3O40@EB-COF as the catalyst and O2 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Key words
POMs@COFs/heterogeneous catalysis/degradation of phenol引用本文复制引用
出版年
2024
NETL
NSTL
万方数据