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Updated: May 14, 2026

Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination

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Oxidation-resistant silver nanostructures for ultrastable plasmonic applications.

R Sachan¹, V Ramos, A Malasi

¹Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA.

Advanced Materials (Deerfield Beach, Fla.)

|February 19, 2013

Summary

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Stabilizing silver nanoparticles (Ag NPs) against oxidation is crucial. Combining silver with immiscible cobalt nanoparticles (Co NPs) significantly enhances Ag NP longevity, extending their functional lifetime by approximately tenfold.

Area of Science:

Materials Science
Nanotechnology
Physical Chemistry

Background:

Silver nanoparticles (Ag NPs) are susceptible to degradation via oxidation.
Maintaining the stability and functionality of Ag NPs is critical for their applications.

Purpose of the Study:

To investigate a method for reducing the oxidation and degradation of silver nanoparticles.
To assess the impact of incorporating immiscible cobalt nanoparticles (Co NPs) on Ag NP stability.

Main Methods:

Contacting silver nanoparticles (Ag NPs) with immiscible cobalt nanoparticles (Co NPs).
Monitoring the decay of the plasmon peak as an indicator of NP degradation.
Utilizing Transmission Electron Microscopy (TEM) to analyze NP morphology after storage.

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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

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Published on: December 11, 2013

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Last Updated: May 14, 2026

Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination

Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination

Published on: August 18, 2020

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Published on: May 28, 2016

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Main Results:

Pure Ag NPs exhibited a 25% decay in plasmon peak within approximately 20 days.
AgCo NPs demonstrated significantly enhanced stability, lasting about 10 times longer than pure Ag NPs.
TEM images confirmed the structural integrity of Ag and AgCo NPs after 50 days of ambient storage.

Conclusions:

The incorporation of immiscible Co NPs effectively mitigates the oxidative degradation of Ag NPs.
This strategy offers a promising approach to prolong the shelf-life and operational stability of silver-based nanomaterials.