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Quantifying hot carrier and thermal contributions in plasmonic photocatalysis.
- Source :
-
Science . 10/5/2018, Vol. 362 Issue 6410, p69-72. 4p. 1 Color Photograph, 2 Diagrams. - Publication Year :
- 2018
-
Abstract
- Photocatalysis based on optically active, “plasmonic” metal nanoparticles has emerged as a promising approach to facilitate light-driven chemical conversions under far milder conditions than thermal catalysis. However, an understanding of the relation between thermal and electronic excitations has been lacking. We report the substantial light-induced reduction of the thermal activation barrier for ammonia decomposition on a plasmonic photocatalyst. We introduce the concept of a light-dependent activation barrier to account for the effect of light illumination on electronic and thermal excitations in a single unified picture. This framework provides insight into the specific role of hot carriers in plasmon-mediated photochemistry, which is critically important for designing energy-efficient plasmonic photocatalysts. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00368075
- Volume :
- 362
- Issue :
- 6410
- Database :
- Academic Search Index
- Journal :
- Science
- Publication Type :
- Academic Journal
- Accession number :
- 132334841
- Full Text :
- https://doi.org/10.1126/science.aat6967