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Enhancement of Carrier Migration by Monolayer MXene Structure in Ti 3 CN/TiO 2 Heterojunction to Achieve Efficient Photothermal Synergistic Transformation of CO 2.
- Source :
- Catalysts (2073-4344); Jan2024, Vol. 14 Issue 1, p35, 15p
- Publication Year :
- 2024
-
Abstract
- Carbon nitride MXene exhibits good metal conductivity, high photothermal conversion, carrier mobility, and high exposure of active sites, which makes it a promising co-catalyst for photothermal synergistic transformation of CO<subscript>2</subscript>. In this paper, Ti<subscript>3</subscript>CN/TiO<subscript>2</subscript> heterojunction was constructed in situ using Ti<subscript>3</subscript>CN as TiO<subscript>2</subscript> precursor to investigate the performance of Ti<subscript>3</subscript>CN MXene in photothermal synergistic transformation of CO<subscript>2</subscript>, and then the monolayer structure was utilized to enhance the interfacial charge transfer and improve the photothermal catalytic activity of Ti<subscript>3</subscript>CN. The catalysts were characterized by SEM, XRD, XPS, and UV-Vis DRS, and it was found the heterojunction constructed by monolayer MXene had a narrower bandgap and a higher carrier generation mobility, which, combined with the catalytic activity test, proved the single monolayer Ti<subscript>3</subscript>CN MXene had better photothermal synergistic conversion efficiency of CO<subscript>2</subscript>, and the heterojunction yield was 11.36 μmol·g<superscript>−1</superscript>·h<superscript>−1</superscript> after layering, compared with that before layering (9.41%), which was 1.2 times higher than that before layering (9.41 μmol·g<superscript>−1</superscript>·h<superscript>−1</superscript>). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 14
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Catalysts (2073-4344)
- Publication Type :
- Academic Journal
- Accession number :
- 175050332
- Full Text :
- https://doi.org/10.3390/catal14010035