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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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Visible light driven plasmonic photochemistry on nano-textured silver
Jaspreet Walia1, Jean-Michel Guay, Oleksiy Krupin
1Centre for Research in Photonics, University of Ottawa, Ontario, Canada. jwalia@uottawa.ca.
Physical Chemistry Chemical Physics : PCCP
|December 5, 2017
Summary
Silver sulfate is generated from dodecanethiol using plasmon excitation on nano-textured silver. This process utilizes hot charge carriers from surface plasmon resonance for visible-light driven photochemical reactions.
Area of Science:
- Photochemistry
- Plasmonics
- Materials Science
Background:
- Surface plasmon resonance (SPR) is crucial for light-matter interactions.
- Visible-light photocatalysis offers advantages over UV-based methods.
- Nano-textured surfaces enhance plasmonic effects.
Purpose of the Study:
- To demonstrate plasmon-assisted synthesis of silver sulfate from dodecanethiol.
- To investigate the role of hot charge carriers in visible-light photocatalysis.
- To explore applications of nano-textured silver substrates in photochemistry.
Main Methods:
- Utilizing a nano-textured silver substrate with strong visible-range SPR.
- Exciting surface plasmon resonances with 532 nm laser light.
- Analyzing photo-physical processes and product formation.
Main Results:
- Successful generation of silver sulfate from dodecanethiol.
- Identification of hot charge carriers as key intermediates.
- Observation of alkane chain cleavage and sulfur oxidation.
- Demonstration of visible-light driven photochemical reactions.
Conclusions:
- Nano-textured silver surfaces enable plasmon-assisted synthesis using visible light.
- Hot charge carriers generated via SPR are responsible for the observed transformations.
- These substrates are promising for solar-driven photochemistry and plasmonic reactors.
