Autor: |
Nishimura, Akira, Senoue, Hiroki, Mae, Homare, Hanyu, Ryo, Hu, Eric |
Předmět: |
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Zdroj: |
Catalysts (2073-4344); Apr2024, Vol. 14 Issue 4, p270, 16p |
Abstrakt: |
This paper presents an experimental study of using a double-layered Cu/TiO2 and P4O10/TiO2 as photocatalysts for CO2 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 CO2:H2O on the CO2 reduction performance. This study revealed that the optimum molar ratio of CO2:H2O 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 CO2 reduction with H2O. Comparing the results of double-layered Cu/TiO2 and P4O10/TiO2 with those of double-layered TiO2 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 CO2:H2O = 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] |
Databáze: |
Complementary Index |
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