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Prominent COF, g-C 3 N 4 , and Their Heterojunction Materials for Selective Photocatalytic CO 2 Reduction.
- Source :
- Catalysts (2073-4344); Oct2023, Vol. 13 Issue 10, p1331, 18p
- Publication Year :
- 2023
-
Abstract
- New heterojunction materials (HJs) were synthesized in-situ by molecularly bonding the monomers of a triazine-based covalent organic framework (bulk COF) on the template of exfoliated carbon nitride (g-C<subscript>3</subscript>N<subscript>4</subscript>). The photocatalysts reduced carbon dioxide to carbon monoxide in aqueous dispersions under UV irradiation. The g-C<subscript>3</subscript>N<subscript>4</subscript> showed production of 6.50 μmol CO g<superscript>−1</superscript> h<superscript>−1</superscript> and the bulk COF of 2.77 μmol CO g<superscript>−1</superscript> h<superscript>−1</superscript>. The CO yield was evaluated in sustainability photoreduction cycles and their CO<subscript>2</subscript> uptake capacity and isosteric heat of adsorption were estimated. All the heterojunction photocatalysts obtained ameliorated CO production rates compared to the bulk COF. Finally, the influence of the Pt co-catalyst on the photocatalytic activities was determined without the addition of any sacrificial agent, and the COF:g-C<subscript>3</subscript>N<subscript>4</subscript> heterojunction with the ratio of 1:10 was proven to be a photocatalytic system with an optimum and selective, CO yield of 7.56 μmol g<superscript>−1</superscript> h<superscript>−1</superscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 13
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Catalysts (2073-4344)
- Publication Type :
- Academic Journal
- Accession number :
- 173267847
- Full Text :
- https://doi.org/10.3390/catal13101331