| 由2，5-二溴对苯二甲酸构筑的铪(Ⅳ)基金属有机框架的质子导电性能 |
| Proton conductive properties of a Hf(Ⅳ)-based metal-organic framework built by 2,5-dibromophenyl-4,6-dicarboxylic acid |
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| 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 HfCl4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-Br2-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。 |
| 关键词: 2，5-二溴对苯二甲酸 铪(Ⅳ) 金属有机框架 质子传导 导电机理 |
| 基金项目: 国家自然科学基金(No.J1210060)和河南省教育厅重点科研项目(No.25B150038)资助。 |
| Abstract: Using 2,5-dibromophenyl-4,6-dicarboxylic acid (H2BDC-Br2) as the bridging ligand and through the rapid synthesis method, it was self-assembled with HfCl4 to successfully prepare a three-dimensional porous hafnium-based metal-organic framework (UiO-66-Br2-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. |
| Keywords: 2,5-dibromoterephthalic acid Hf(Ⅳ) metal-organic framework proton conduction conducting mechanism |
| 投稿时间：2024-12-30 修订日期：2025-04-11 |
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| 李建定,冯俊阳,任慧敏,李纲.由2，5-二溴对苯二甲酸构筑的铪(Ⅳ)基金属有机框架的质子导电性能[J].无机化学学报,2025,41(6):1094-1100. |
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