基于方形平面四核集群的性地球金属有机框架,具有增强的质子导电性
Hui-Pu Wang1, Jin-Cheng Liu1, Shu-Fan Li1
1School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, P. R. China.
Chemistry, an Asian journal
|April 17, 2024
概括
合成了土金属有机框架 (MOF),Ca4-MOF显示出优异的水稳定性和超高的质子导电性. 引入LiCl进一步提高了这种导电性,为MOF应用提供了洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 纳米技术 纳米技术
背景情况:
- 土 (AE) 金属复合物由于其低毒性,密度和成本而具有价值.
- 对AE金属有机框架 (MOF) 的结构和物理特性进行的系统研究是有限的.
- MOFs为各种应用提供可调节的结构和特性.
研究的目的:
- 为了合成和表征同结构AE-MOF,使用佐-{1,2;3,4;5,6) -tris{thiophene-2'-carboxylic acid) (BTTC3-) 连接体.
- 研究合成的AE-MOFs的结构特征,化学稳定性和物理性质.
- 评估AE-MOFs的质子导电性和客分子结合的影响.
主要方法:
- 使用AE离子 (Ca,Sr,Ba) 和BTTC3-连接体合成同结构MOF.
- 描述MOF结构,包括N2吸附和UV对NIR吸收.
- 在不同温度和湿度下评估水中的化学稳定性和质子导电性.
- 用LiCl来调整质子导电性的客人交换.
主要成果:
- 具有截断的八面体的同结构MOFs,[A4(m4-Cl) ]6(BTTC) 8,已成功合成.
- 与Sr4-MOF和Ba4-MOF相比,Ca4-MOF表现出优越的水稳定性.
- Ca4-MOF 显示出超高的质子导电性 (3.52×10-2 S cm-1 在 343 K, 98% RH),在加入 LiCl (LiCl@Ca4-MOF) 时增强到 6.36×10-2 S cm-1.
结论:
- 合成的AE-MOF具有可调节的结构和物理特性.
- 在需要高质子导电性的应用中,Ca4-MOF显示出有前途的潜力.
- 客人交流是一种有效的策略,可以进一步提高MOFs的质子导电性.
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