Back to Search
Start Over
CO 2 Reduction Performance with Double-Layered Cu/TiO 2 and P 4 O 10 /TiO 2 as Photocatalysts under Different Light Illumination Conditions.
- Source :
- Catalysts (2073-4344); Apr2024, Vol. 14 Issue 4, p270, 16p
- Publication Year :
- 2024
-
Abstract
- This paper presents an experimental study of using a double-layered Cu/TiO<subscript>2</subscript> and P<subscript>4</subscript>O<subscript>10</subscript>/TiO<subscript>2</subscript> as photocatalysts for CO<subscript>2</subscript> reduction with an extended wavelength of range light from ultraviolet light (UV) to infrared light (IR). The lights studied were UV + visible light (VIS) + IR, VIS + IR and IR only. This study also investigated the impact of the molar ratio of CO<subscript>2</subscript>:H<subscript>2</subscript>O on the CO<subscript>2</subscript> reduction performance. This study revealed that the optimum molar ratio of CO<subscript>2</subscript>:H<subscript>2</subscript>O to produce CO was 1:1, irrespective of light illumination condition, which matched the theoretical molar ratio to produce CO according to the reaction scheme of CO<subscript>2</subscript> reduction with H<subscript>2</subscript>O. Comparing the results of double-layered Cu/TiO<subscript>2</subscript> and P<subscript>4</subscript>O<subscript>10</subscript>/TiO<subscript>2</subscript> with those of double-layered TiO<subscript>2</subscript> obtained under the UV + VIS + IR light illumination condition, the highest concentration of formed CO and the molar quantity of formed CO per unit weight of the photocatalyst increased by 281 ppmV and 0.8 μmol/g, in the case of the molar ratio of CO<subscript>2</subscript>:H<subscript>2</subscript>O = 1:1. With IR-only illumination, the highest concentration of formed CO and the molar quantity of CO formed per unit weight of the photocatalyst was 251 ppmV and 4.7 μmol/g, respectively. [ABSTRACT FROM AUTHOR]
- Subjects :
- COPPER
TITANIUM dioxide
CARBON dioxide
PHOTOCATALYSTS
ULTRAVIOLET radiation
Subjects
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 14
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Catalysts (2073-4344)
- Publication Type :
- Academic Journal
- Accession number :
- 176874613
- Full Text :
- https://doi.org/10.3390/catal14040270