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This study investigates the controllable synthesis of Au–Ag alloy nanoparticles and their surface plasmon resonance (SPR) tuning mechanisms. Through a co-reduction approach in ethylene glycol, we successfully prepared uniform Au–Ag alloy nanoparticles with tunable SPR properties. The effects of precursor types, stoichiometric ratios, reaction conditions, and solvent systems on the structural and optical properties were systematically studied. Our results demonstrate that SPR peaks can be continuously tuned across the visible spectrum (420–520 nm) by adjusting the Au/Ag composition ratio.

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Controllable Synthesis of Au–Ag Alloy Nanoparticles and Investigation of SPR Tuning Mechanisms

  • 会议论文

  • 发表日期：

    2026年

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  • Lidong Che,
  • Honghua Huang,
  • Zhixu Tang,
  • Jianwen Zhang

摘要

This study investigates the controllable synthesis of Au–Ag alloy nanoparticles and their surface plasmon resonance (SPR) tuning mechanisms. Through a co-reduction approach in ethylene glycol, we successfully prepared uniform Au–Ag alloy nanoparticles with tunable SPR properties. The effects of precursor types, stoichiometric ratios, reaction conditions, and solvent systems on the structural and optical properties were systematically studied. Our results demonstrate that SPR peaks can be continuously tuned across the visible spectrum (420–520 nm) by adjusting the Au/Ag composition ratio.