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Designing atomic Ni/Cu pairs on a reactive BiOCl surface for efficient photo-chemical HCO3−-to-CO conversion.
- Source :
- Journal of Materials Chemistry A; 8/21/2024, Vol. 12 Issue 31, p19950-19957, 8p
- Publication Year :
- 2024
-
Abstract
- Solar-driven conversion of bicarbonate (HCO<subscript>3</subscript><superscript>−</superscript>) to carbonaceous fuels and/or chemicals provides an alternative route for the development of sustainable carbon economies. However, promoting the HCO<subscript>3</subscript><superscript>−</superscript> reduction rate and tuning product selectivity remain significant challenges. This study reports the identification of isolated Ni/Cu atomic pairs dispersed on a BiOCl surface (Ni<subscript>1</subscript>/Cu<subscript>1</subscript>-BOC) as a promising candidate for efficient HCO<subscript>3</subscript><superscript>−</superscript> reduction under UV-vis light irradiation. The optimized photocatalyst exhibits a high CO formation rate of 157.1 μmol g<superscript>−1</superscript> h<superscript>−1</superscript> with nearly 100% selectivity, even in the absence of added proton sources, sacrificial agents, or sensitizers. Experimental and theoretical investigations reveal that the atomically dispersed Ni/Cu pairs facilitate the protonation of HCO<subscript>3</subscript><superscript>−</superscript> to CO<subscript>2</subscript>, which then undergoes a H<superscript>+</superscript>-assisted reduction pathway to produce CO, with *COOH as the intermediate. The synergistic effects of the Ni/Cu atomic pairs simultaneously promote the HCO<subscript>3</subscript><superscript>−</superscript>-to-CO<subscript>2</subscript> conversion and the subsequent CO<subscript>2</subscript>-to-CO reduction, providing valuable insights for the development of efficient diatomic catalysts for photocatalytic HCO<subscript>3</subscript><superscript>−</superscript> reduction reactions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 12
- Issue :
- 31
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 178853274
- Full Text :
- https://doi.org/10.1039/d4ta02199a