不同配体合成的锆基MOFs吸附VOCs的试验研究  

Experimental study on VOCs adsorption by Zr-MOFs synthesizedwith different ligands

作　　者：井察 殷千娇 周海涛 何文宇 黄皓旻 付名利 叶代启 JING Cha;YIN Qianjiao;ZHOU Haitao;HE Wenyu;HUANG Haomin;FU Mingli;YE Daiqi(College of Environment and Energy,South China University of Technology,Guangzhou 510006,China;Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control,Guangzhou 510006,China)

机构地区：[1]华南理工大学环境与能源学院,广东广州510006 [2]广东省大气环境与污染控制重点实验室,广东广州510006

出　　处：《能源环境保护》2023年第3期109-117,共9页Energy Environmental Protection

基　　金：国家自然科学基金面上项目(51878292);广州市基础研究计划民生科技项目(202002020020)。

摘　　要：以对苯二甲酸作为基础配体,采用功能化官能团配体2-氨基对苯二甲酸、1,4-萘二甲酸以及长链配体联苯二甲酸,水热合成UIO-66、UIO-66-NH 2、UIO-66-NDC和UIO-67等含有不同配体的锆基MOFs吸附材料。利用XRD、FTIR、BET表征分析了这4种材料,分别考察了其对甲苯和乙酸乙酯的动态吸附容量。结果表明:具有4种不同配体的MOFs均合成成功;在相对湿度为80%时,UIO-66表现出最高的吸附容量,甲苯吸附量高达139.4 mg/g,乙酸乙酯吸附量为60.8 mg/g;UIO-66具有最佳吸附性能归因于其以微孔为主的孔径结构,BET结果显示其微孔分布在0.5~1 nm之间,有利于小分子VOCs的吸附,展示出良好的应用潜力。Zirconium-based MOFs adsorbent materials with different ligands,including:UIO-66,UIO-66-NH 2,UIO-66-NDC and UIO-67 were hydrothermally synthesized using terephthalic acid as the base ligand and functionalized functional group ligands 2-aminoterephthalic acid,1,4-naphthalenedicarboxylic acid and the long-chain ligand biphenyl dicarboxylic acid.The four adsorbent materials were characterized by XRD,FTIR and BET,and the adsorption performance on toluene and ethyl acetate was investigated.The results showed that all four MOFs with different ligands were successfully synthesized,and UIO-66 showed the best adsorption performance at a relative humidity of 80%,with toluene adsorption of 139.4 mg/g and ethyl acetate adsorption of 60.8 mg/g.The best adsorption performance of UIO-66 was attributed to its predominantly microporous pore size structure,showing good application potential.BET results showed that the micropore distribution was between 0.5~1 nm,which facilitated the adsorption of small molecule VOCs.

关 键 词：挥发性有机化合物 吸附 高湿度 锆基金属有机框架材料 配体 

分 类 号：X701[环境科学与工程—环境工程]