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Updated: Aug 12, 2025

Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination
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Interface-Dependent Selectivity in Plasmon-Driven Chemical Reactions.

Andrei Stefancu1,2, Julian Gargiulo1, Geoffry Laufersky3

  • 1Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539 Munich, Germany.

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Summary
This summary is machine-generated.

Halide ions control sunlight-driven chemical reactions using plasmonic nanoparticles. Engineering the nanoparticle-molecule interface with halides precisely tunes energy and charge transfer, enhancing reaction selectivity.

Keywords:
anti-Stokes SERSenergy transferhalide ionsmethylene blueplasmonic chemistryvibrational pumping

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Area of Science:

  • Nanotechnology
  • Photochemistry
  • Surface Science

Background:

  • Plasmonic nanoparticles enable sunlight-driven chemical reactions via surface plasmon resonances (SPR).
  • Controlling energy and charge transfer from SPR to molecules remains a challenge.
  • Understanding interfacial effects is key to harnessing plasmonic catalysis.

Purpose of the Study:

  • To investigate the role of halide ions in modulating plasmon-driven chemical reactions.
  • To demonstrate precise control over energy and charge transfer at the nanoparticle-molecule interface.
  • To enhance selectivity in plasmon-catalyzed reactions.

Main Methods:

  • Engineering the interface between plasmonic nanoparticles and adsorbed molecules.
  • Utilizing halide ions to modify the interfacial energy landscape.
  • In situ characterization of energy and charge transfer dynamics.

Main Results:

  • Halide ions significantly alter the energy landscape of plasmon-driven reactions.
  • Control over metal-molecule charge and energy transfer was achieved, enhancing or inhibiting it.
  • Vibrational pumping rates were regulated, demonstrating tunable reaction pathways.

Conclusions:

  • Halide ions offer an effective strategy for controlling energy flow in plasmonic catalysis.
  • Interface engineering with halides enables selective targeting of chemical bonds.
  • This provides an elegant method for in situ tuning of plasmon-driven chemical transformations.