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Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination
Published on: August 18, 2020
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Alchemically-glazed plasmonic nanocavities using atomic layer metals: controllably synergizing catalysis and
Shu Hu1,2, Eric S A Goerlitzer2, Qianqi Lin2
1Department of Physics, Xiamen University, Xiamen, China.
Nature Communications
|April 9, 2025
Summary
Ultrathin palladium films enhance plasmonic nanocavity photocatalysis. This atomic alchemical-glazing approach boosts light-driven chemical reactions and improves device stability for energy conversion.
Area of Science:
- Nanophotonics and Plasmonics
- Materials Science
- Catalysis
Background:
- Plasmonic nanocavities excel at light confinement for energy conversion.
- Practical use is hindered by stability, material, and chemical activity limitations.
Purpose of the Study:
- To integrate ultrathin palladium (Pd) films into plasmonic nanocavities to enhance photocatalytic performance and stability.
- To investigate the synergistic effects of Pd's plasmonic and chemical properties within nanocavities.
Main Methods:
- Utilized underpotential deposition to integrate sub- to few-atomic monolayer Pd films into plasmonic nanocavities.
- Employed ab initio calculations to confirm optical field enhancement and chemical effects.
- Evaluated photocatalytic activity and photostability of the modified nanocavities.
Main Results:
- Achieved minimal loss in optical field enhancement despite Pd's poor visible plasmonic properties.
- Observed significant enhancement in photocatalytic activity due to synergistic plasmonic and chemical effects.
- Demonstrated improved photostability by suppressing surface atom migration.
Conclusions:
- The atomic alchemical-glazing approach effectively integrates catalytic metals with plasmonic nanocavities.
- This method bridges plasmonic and chemical catalysis, offering broad applications in photocatalysis.
- The technique enhances both efficiency and stability for optimal chemical transformations.
