金属有机框架ZIF-8/聚二乙烯基苯纳米复合材料的合成及其吸附VOCs的性能  

Synthesis of metal-organic framework ZIF-8/polydivinylbenzene nanohybrid composite and its adsorption property of VOCs

作　　者：陈建东[1] 许伟城 吴军良[1,2,3] 付名利[1,2,3] 叶代启[1,2,3] 

机构地区：[1]华南理工大学环境与能源学院,广州510006 [2]广东省大气环境与污染控制重点实验室,广州510006 [3]广东省环境风险防控与应急处置工程技术研究中心,广州510006

出　　处：《环境科学学报》2017年第5期1877-1883,共7页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.U1201231;51378218;51678245;51578245);广州市科技计划项目(No.201510010164;201607010095);中央高校基本科研基金(No.2015ZZ013;2015ZZ052;D215086W;D2154140)~~

摘　　要：在常温常压下的甲醇溶液体系中,将COOH功能化的介孔材料聚二乙烯基苯(PDVB)与微孔材料金属有机框架(MOFs)ZIF-8进行复合,获得了一种新型的多孔纳米复合材料ZIF-8/PDVB,采用XRD、FTIR、SEM和氮气吸附-脱附等方法对ZIF-8/PDVB进行表征,并考察了其吸附甲苯、乙酸乙酯的性能.XRD谱图表明,所合成的ZIF-8以晶体形式存在;FTIR和XRD的结果表明,ZIF-8与PDVB的复合是通过Zn2+与PDVB上的COOH形成配位,未配位饱和的Zn^(2+)再与2-甲基咪唑进行配位,从而形成纳米复合材料ZIF-8/PDVB;SEM结果显示,ZIF-8晶体分散在PDVB的表面上;氮气吸附-脱附表征结果显示,ZIF-8/PDVB的比表面积达到1301 m^2·g^(-1),材料同时具有介孔与微孔结构.吸附性能评价结果表明,ZIF-8/PDVB对甲苯、乙酸乙酯均具有优良的吸附性能,ZIF-8/PDVB在吸附VOCs性能上显示出潜在的巨大优势.A novel nanocomposite of ZIF-8/PDVB was synthesized by combining carboxyl group functionalized polydivinylbenzene（PDVB） with metalorganic frameworks（MOFs） ZIF-8 at room temperature and pressure in methanol solution system.The nanohybrid composite was characterized by XRD,FTIR,SEM and N2adsorption/desorption techniques.Moreover,the adsorption capacity of VOCs（toluene and ethyl acetate） was also investigated in this study.The results of FTIR and XRD showed that ZIF-8/PDVB composite was successfully synthesized via formation of coordination bond among Zn～（2＋）,carboxyl group and 2-methyl imidazole.The as-prepared ZIF-8/PDVB displayed high special surface area（1301 m～2·g^-1） and evident micro-mesoporous structure.In addition,ZIF-8 crystals were dispersed on the surface of the PDVB and detected by the SEM technique.Finally,the adsorption performanceresults demonstrated that ZIF-8/PDVB exhibited an excellent adsorption capacity on toluene and ethyl acetate,and it is a potential superior adsorbent for removal of VOCs in the future.

关 键 词：ZIF-8 聚二乙烯基苯 纳米复合材料 VOCS 

分 类 号：X51[环境科学与工程—环境工程]