多面体型Fe基金属有机框架材料(Fe-MOF)的调控制备及其性能  

Preparation and performance of polyhedral Fe-MOFs

作　　者：黄韦颖 陶雪芬[1] 石润琪 贾艺阳 王玉新[1] 金银秀[1] HUANG Weixing;TAO Xuefen;SHI Runqi;JIA Yiyang;WANG Yuxin;JIN Yinxiu(Taizhou Vocational&Technical College,Taizhou 318000,China)

机构地区：[1]台州职业技术学院,浙江台州310008

出　　处：《化工科技》2023年第3期53-57,共5页Science & Technology in Chemical Industry

基　　金：台州市大学生科技创新项目;高校国内访问工程师“校企合作项目”(FG2022260);台州市第一批工业类科技计划项目(21gya32);台州职业技术学院培育项目(2021PY04)。

摘　　要：FeCl_(3)与邻苯二甲酸、对苯二甲酸等双齿配体在N,N-二甲基甲酰胺(DMF)溶剂热条件下配位聚合形成Fe基金属有机框架材料(FeMOF),以单齿配体苯甲酸作为调节剂,调节配位过程,通过配位竞争得到粒径较大的晶体,借助X射线衍射(XRD)、电镜扫描(SEM)对产物进行表征,以亚甲基蓝为有机污染物,对所得产物的吸附、催化降解性能进行评价。结果表明,随着反应时间的延长,FeMOF晶型由八面体转成二十面体,苯甲酸作调节剂使锥体晶型的尖角变得圆滑;n(单齿配体):n(双齿配体)=5:1、120℃条件下反应36h制得的FeMOF具有较好的吸附和催化性能。FeCl_(3)was coordinated and polymerized with bidentate ligands such as phthalic acid and terephthalic acid to form Fe-Metalorganic(Fe-MOFs)by solvothermal process.The monodentate ligand benzoic acid was added to the reaction system as a modifier to make it compete with the bridged ligands,so as to adjust the coordination process and finally obtain crystals with larger particle size.The film characterization was carried out by scanning electron microscope(SEM)and X-ray diffraction(XRD).The photocatalytic activity was evaluated using methylene blue(MB)as model pollutant.The results showed that crystal form of Fe-MOFs changed from octahedron to icosahedron when the reaction time was prolonged from 12 h to 36h.The Fe-MOF prepared at 120℃for 36 h with the molar ratio of monodentate ligand to bidentate ligand as 5:1 has good adsorption and catalytic properties.

关 键 词：Fe基金属-有机框架化合物 溶剂热 双齿配体 单齿配体 催化降解 

分 类 号：O69[理学—化学]