应用化学2026，Vol.43Issue(4)：535-543,中插5-中插8,13.DOI:10.19894/j.issn.1000-0518.250328
双溴对苯二甲酸构筑的铕(Ⅲ)-MOF的质子导电性能
Proton-Conductive Properties of Europium(Ⅲ)-MOF Constructed by Dibromophthalic Acid
摘要
Abstract
In this study,2,5-dibromoterephthalic acid(H2DBTA)was employed as the organic bridging ligand,and a europium(Ⅲ)-based metal-organic framework,[Eu2(DBTA)3(DMF)2]·DMF(denoted as MOF 1),was synthesized via a solvothermal method according to a reference approach.The structural features and stability of MOF 1 were systematically characterized using powder X-ray diffraction(PXRD),Fourier transform infrared spectroscopy(FT-IR),thermogravimetric analysis(TGA),and scanning electron microscopy(SEM).Pore parameters were evaluated through nitrogen adsorption-desorption measurements,while hydrophilicity was determined via water contact angle tests.Proton conductivity was investigated using alternating current(AC)impedance spectroscopy over a temperature range of 30～100℃ and relative humidity(RH)values of 68％～97％.The activation energy(Ea)was calculated using the Arrhenius equation to elucidate the proton transport mechanism.Results indicated that MOF 1 achieved a proton conductivity of 1.59×10-3 S/cm at 100℃ and 97％RH.Notably,proton transport within the MOF framework followed the Grotthuss mechanism under both high-humidity(97％RH)and low-humidity(68％RH)conditions.This work provides experimental and theoretical insights for the rational design of lanthanide-based MOFs as high-performance proton-conducting materials.关键词
2,5-二溴对苯二甲酸/铕基金属有机框架/溶剂热合成/质子传导/稳定性Key words
2,5-Dibromoterephthalic acid/Eu-MOF/Solvothermal synthesis/Proton conduction/Stability分类
化学化工引用本文复制引用
李盈,冯俊阳,刘安祺,李纲..双溴对苯二甲酸构筑的铕(Ⅲ)-MOF的质子导电性能[J].应用化学,2026,43(4):535-543,中插5-中插8,13.基金项目
国家自然科学基金(No.J1210060)和河南省高校重点科研项目(No.16B150002)资助 Supported by the National Natural Science Foundation of China(No.J1210060)and Henan Province Key Research Project of Universities(No.16B150002) （No.J1210060）
