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A multifunctional anionic metal-organic framework for high proton conductivity and photoreduction of CO 2 induced by cation exchange.
- Source :
-
Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2022 Mar 22; Vol. 51 (12), pp. 4798-4805. Date of Electronic Publication: 2022 Mar 22. - Publication Year :
- 2022
-
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 <subscript>3</subscript> ImDC and In(NO <subscript>3</subscript> ) <subscript>3</subscript> ·2H <subscript>2</subscript> O through guest exchange inside the framework. The guest ammonium ion (NH <subscript>4</subscript> <superscript>+</superscript> ) and [Ru(2,2'-bipyridine) <subscript>3</subscript> ] <superscript>2+</superscript> (Rubpy) are selected to exchange the dimethylammonium cation (Me <subscript>2</subscript> NH <subscript>2</subscript> <superscript>+</superscript> ) encapsulated within In-MOF , giving birth to two kinds of new MOFs, named NH <subscript> 4 </subscript> <superscript> + </superscript> @In-MOF and Rubpy@In-MOF respectively. The proton conduction of NH <subscript> 4 </subscript> <superscript> + </superscript> @In-MOF and the CO <subscript>2</subscript> photoreduction of Rubpy@In-MOF are investigated. Under different test conditions, the proton conductive behaviors of NH <subscript> 4 </subscript> <superscript> + </superscript> @In-MOF are evaluated and the best proton conductive value can reach up to 9.81 × 10 <superscript>-3</superscript> S cm <superscript>-1</superscript> . Compared to the original In-MOF , Rubpy@In-MOF exhibits a significantly enhanced CO <subscript>2</subscript> photoreduction performance under a pure CO <subscript>2</subscript> atmosphere. Furthermore, its photocatalytic activity is retained even under a 10% CO <subscript>2</subscript> gas atmosphere, displaying a synergistic effect between Rubpy and In-MOF24 within Rubpy@In-MOF .
Details
- Language :
- English
- ISSN :
- 1477-9234
- Volume :
- 51
- Issue :
- 12
- Database :
- MEDLINE
- Journal :
- Dalton transactions (Cambridge, England : 2003)
- Publication Type :
- Academic Journal
- Accession number :
- 35253826
- Full Text :
- https://doi.org/10.1039/d2dt00089j