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Amino group promoted photoelectrocatalytic CO2 reduction activity observed in mixed-linker Cu-based metal–organic frameworks.
- Source :
- Journal of Materials Science: Materials in Electronics; May2023, Vol. 34 Issue 15, p1-12, 12p
- Publication Year :
- 2023
-
Abstract
- The absorption of visible light of mixed-linker metal–organic frameworks can be enhanced by adding organic ligands to be present as reaction sites. In this work, through the introduction of an amino-functionalized organic ligand (NH<subscript>2</subscript>BDC, BDC = 1, 4-benzenedicarboxylate) into the structure of CuBDC, dual-ligand Cu-based MOF (CuBDC-xNH<subscript>2</subscript>/CF, x represents the molar ratio of NH<subscript>2</subscript>BDC) was successfully synthesized on copper foam (CF). The photoelectrocatalytic CO<subscript>2</subscript> reduction performance of all samples was explored when increasing amounts of NH<subscript>2</subscript>BDC linkers (0%, 5%, 10%, 20%, 50%, and 100%) are incorporated in the framework. The highest Faradaic efficiency of CO (51.5%) was achieved when the molar ratio of NH<subscript>2</subscript>BDC was 10%. NH<subscript>2</subscript>BDC can effectively improve the visible light absorption ability of MOFs. And both terephthalic acid (H<subscript>2</subscript>BDC) and NH<subscript>2</subscript>BDC are coordinated with Cu–O clusters, which contribute to the generation and separation of charges. At the same time, the amino functional group can effectively adsorb the CO<subscript>2</subscript> molecules as a basic site. The synergistic effect improves the Faradaic efficiency of the reduction products. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 34
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 163960790
- Full Text :
- https://doi.org/10.1007/s10854-023-10644-y