摘要
以2,5-二溴对苯二甲酸(H2BDC-Br2)为桥联配体,采用快速合成法,与HfCl_(4)进行自组装,成功制备了一个与传统UiO-66结构相同的三维多孔铪基金属有机框架(UiO-66-Br_(2)-Hf)(1)。首先通过热重分析(TGA)、粉末X射线衍射(PXRD)等表征手段证实了1的卓越的结构稳定性。进而系统地考察了其在水分子辅助下的质子导电能力,发现其质子电导率与温度和相对湿度(RH)呈正相关关系,且在100℃和98%RH下,其质子电导率高达3.11×10^(-3) S·cm^(-1)。最后,结合结构分析、氮气和水蒸气吸附测试以及活化能计算等,对其质子导电机制进行了探究。
Using 2,5-dibromophenyl-4,6-dicarboxylic acid(H2BDC-Br_(2))as the bridging ligand and through the rapid synthesis method,it was self-assembled with HfCl_(4) to successfully prepare a three-dimensional porous hafniumbased metal-organic framework(UiO-66-Br_(2)-Hf,1).Firstly,through characterization methods such as thermogravimetric analysis(TGA)and powder X-ray diffraction(PXRD),the excellent structural stability of 1 was confirmed.Subsequently,its proton conductivity,assisted by water molecules,was systematically investigated,and it was found that the proton conductivity of 1 was positively correlated with temperature and relative humidity(RH).At 100℃ and 98%RH,its proton conductivity reached 3.11×10^(-3) S·cm^(-1).Finally,combined with structural analysis,nitrogen and water vapor adsorption tests,and activation energy calculations,the proton conductivity mechanism of 1 was explored.
作者
李建定
冯俊阳
任慧敏
李纲
LI Jianding;FENG Junyang;REN Huimin;LI Gang(School of Pharmaceutical Engineering,Henan Technical Institute,Zhengzhou 450042,China;College of Chemistry,Zhengzhou University,Zhengzhou 450001,China)
出处
《无机化学学报》
北大核心
2025年第6期1094-1100,共7页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.J1210060)
河南省教育厅重点科研项目(No.25B150038)资助。
