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Photocatalytic CO2 Conversion of M0.33WO3 Directly from the Air with High Selectivity: Insight into Full Spectrum-Induced Reaction Mechanism
- Source :
- Journal of the American Chemical Society. 141:5267-5274
- Publication Year :
- 2019
- Publisher :
- American Chemical Society (ACS), 2019.
-
Abstract
- Natural photosynthesis is a solar light-driven process utilized by plants to convert CO2 and water into carbohydrate molecules. The goal of artificial photosynthesis is the reduction of CO2 directly from air into high purity value-added products at atmospheric pressure. However, its realization, combined with deep mechanism investigation, is a huge challenge. Herein, we demonstrate that hexagonal tungsten bronze M0.33WO3 (M = K, Rb, Cs) series with {010} facets, prepared by a peculiar “water-controllable releasing” solvothermal method, showed excellent full spectrum (UV, visible, and NIR lights)-induced photocatalytic CO2 reduction performance directly from the air at ambient pressure. Particularly, after 4 h near-infrared light irradiation, ca. 4.32% CO2 in the air could be converted into CH3OH with 98.35% selectivity for Rb0.33WO3. The experiments and theoretical calculations unveiled that the introduced alkali metal atom occupied the tunnel of hexagonal structure and donated more free electrons to reco...
- Subjects :
- Reaction mechanism
Atmospheric pressure
Chemistry
chemistry.chemical_element
General Chemistry
Tungsten
010402 general chemistry
Alkali metal
Photochemistry
01 natural sciences
Biochemistry
Catalysis
0104 chemical sciences
Artificial photosynthesis
Colloid and Surface Chemistry
Photocatalysis
Selectivity
Ambient pressure
Subjects
Details
- ISSN :
- 15205126 and 00027863
- Volume :
- 141
- Database :
- OpenAIRE
- Journal :
- Journal of the American Chemical Society
- Accession number :
- edsair.doi...........97fad5dddd54d0e7e5fdc6257e69c347