Back to Search
Start Over
The plasmonic effect of Cu on tuning CO2 reduction activity and selectivity.
- Source :
- Physical Chemistry Chemical Physics (PCCP); 1/28/2024, Vol. 26 Issue 4, p2915-2925, 11p
- Publication Year :
- 2024
-
Abstract
- Copper (Cu) has been widely used for catalyzing the CO<subscript>2</subscript> reduction reaction (CO<subscript>2</subscript>RR), but the plasmonic effect of Cu has rarely been explored for tuning the activity and selectivity of the CO<subscript>2</subscript>RR. Herein, we conducted a quantitative analysis on the plasmon-generated photopotential (E<subscript>hv</subscript>) of a Cu nanowire array (NA) photocathode and found that E<subscript>hv</subscript> exclusively reduced the apparent activation energy (E<subscript>a</subscript>) of reducing CO<subscript>2</subscript> to CO without affecting the competitive hydrogen evolution reaction (HER). As a result, the CO production rate was enhanced by 52.6% under plasmon excitation when compared with that under dark conditions. On further incorporation with a polycrystalline Si photovoltaic device, the Cu NA photocathode exhibits good stability in terms of photocurrent and syngas production (CO : H<subscript>2</subscript> = 2 : 1) within 10 h. This work validates the crucial role of the plasmonic effect of Cu on modulating the activity and selectivity of the CO<subscript>2</subscript>RR. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14639076
- Volume :
- 26
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Physical Chemistry Chemical Physics (PCCP)
- Publication Type :
- Academic Journal
- Accession number :
- 174969889
- Full Text :
- https://doi.org/10.1039/d3cp05450k