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Plasmonic Cavity-Catalysis by Standing Hot Carrier Waves.
Pin-Tian Lyu1, Li-Xin Yin1, Yi-Ting Shen1
1State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
Journal of the American Chemical Society
|August 16, 2023
Summary
Researchers developed plasmonic cavity-catalysis, controlling catalytic sites with standing hot carrier waves. This new method significantly enhances catalytic activity by creating tunable hotspots within plasmonic cavities.
Area of Science:
- Catalysis Science and Engineering
- Materials Science
- Physical Chemistry
Background:
- Catalyst active site manipulation is key but difficult.
- Optical cavities offer confined electromagnetic fields for catalysis.
- Plasmons in cavities need further exploration for catalytic applications.
Purpose of the Study:
- Introduce and explore plasmonic cavity-catalysis.
- Investigate control of catalytic sites using standing hot carrier waves.
- Enhance catalytic activity via plasmonic cavities.
Main Methods:
- Utilized plasmonic cavities to generate standing hot carrier waves.
- Controlled catalytic site distribution through cavity geometry, charge density, and excitation angle.
- Analyzed energy and carrier distribution to identify catalytic hotspots.
Main Results:
- Achieved direct control of catalytic sites in plasmonic cavities.
- Demonstrated periodic catalytic hotspots formed by localized energy and carrier distribution.
- Observed catalytic activity enhancement of several orders of magnitude compared to conventional plasmonic catalysis.
- Identified locally concentrated, long-lived hot carriers in the standing wave mode as the source of catalytic hotspots.
Conclusions:
- Plasmonic cavity-catalysis offers a novel approach to manipulate catalytic sites and rates.
- This method expands the possibilities within heterogeneous catalysis.
- Strong light-matter interactions in plasmonic cavities can be harnessed for advanced catalytic applications.
