1. A multifunctional anionic metal–organic framework for high proton conductivity and photoreduction of CO2 induced by cation exchange.
- Author
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Sun, Hong-Xu, Wang, Hai-Ning, Fu, Yao-Mei, Meng, Xing, He, Yu-Ou, Yang, Rui-Gang, Zhou, Zhen, and Su, Zhong-Min
- Subjects
PROTON conductivity ,METAL-organic frameworks ,PHOTOREDUCTION ,AMMONIUM ions ,PHOTOCATALYSTS ,PROTONS - Abstract
Metal–organic frameworks (MOFs) provide an ideal platform for loading various guests owing to their available space, and can be developed as a class of multifunctional materials. Herein, we cover the design and synthesis of two kinds of exchanged frameworks with multifunctional applications based on H
3 ImDC and In(NO3 )3 ·2H2 O through guest exchange inside the framework. The guest ammonium ion (NH4 + ) and [Ru(2,2′-bipyridine)3 ]2+ (Rubpy) are selected to exchange the dimethylammonium cation (Me2 NH2 + ) encapsulated within In-MOF, giving birth to two kinds of new MOFs, named NH4 + @In-MOF and Rubpy@In-MOF respectively. The proton conduction of NH4 + @In-MOF and the CO2 photoreduction of Rubpy@In-MOF are investigated. Under different test conditions, the proton conductive behaviors of NH4 + @In-MOF are evaluated and the best proton conductive value can reach up to 9.81 × 10−3 S cm−1 . Compared to the original In-MOF, Rubpy@In-MOF exhibits a significantly enhanced CO2 photoreduction performance under a pure CO2 atmosphere. Furthermore, its photocatalytic activity is retained even under a 10% CO2 gas atmosphere, displaying a synergistic effect between Rubpy and In-MOF24 within Rubpy@In-MOF. [ABSTRACT FROM AUTHOR]- Published
- 2022
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