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Published on: August 18, 2020
Enhancing Plasmonic Hot Electron Energy on Ag Surface by Amine Coordination
Ying Wang1, Yonglong Li1, Xian Yang1
1State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Laboratory of Biosensing and Molecular Recognition, Haihe Laboratory of Sustainable Chemical Transformations, Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, 300071, Tianjin, P. R. China.
Coordination of amines on silver surfaces significantly boosts hot electron energy in plasmonic catalysis. This enhancement enables efficient solar-chemical energy conversion by promoting chemical bond cleavage.
Area of Science:
- Plasmonic catalysis
- Solar-chemical energy conversion
- Surface chemistry
Background:
- Hot carriers are crucial for plasmonic catalysis, with their energy dictating reaction activation.
- Hot carrier energy is influenced by the plasmonic substrate's properties and light interactions.
- Tuning hot carrier energy is vital but challenging for optimizing plasmonic catalysis.
Purpose of the Study:
- To demonstrate a novel method for significantly elevating hot electron energy in plasmonic systems.
- To investigate the effect of amine coordination on silver surfaces for hot carrier energy enhancement.
- To promote plasmon-mediated charge transfer and improve photocatalytic performance.
Main Methods:
- Coordination of amine molecules onto silver (Ag) surfaces.
- Characterization of changes in nanoparticle work function.
- Evaluation of hot electron energy enhancement and its impact on chemical reactions.
Main Results:
- Amine coordination on Ag surfaces reduces the work function of nanoparticles.
- Hot electron energy is increased by an unprecedented level of 0.4 eV.
- Enhanced hot electron energy promotes the cleavage of C-X (X=Cl, F) bonds under visible light.
Conclusions:
- Amine coordination is an effective strategy to tune and enhance hot electron energy in plasmonic catalysis.
- Elevated hot electron energy facilitates efficient solar-chemical energy conversion.
- This work offers new insights for advancing plasmon-mediated photocatalysis.
