A Focus on Thermal Durability and Oxidation Resistance and Morphology of Polymer Capped Copper Particles Through a Synthesis-Driven, Precursor-Influenced Approach

A. R. Indhu; Manickam Minakshi; R. Sivasubramanian; Gnanaprakash Dharmalingam

doi:10.3390/nano15241852

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A Focus on Thermal Durability and Oxidation Resistance and Morphology of Polymer Capped Copper Particles Through a Synthesis-Driven, Precursor-Influenced Approach

Journal article

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A Focus on Thermal Durability and Oxidation Resistance and Morphology of Polymer Capped Copper Particles Through a Synthesis-Driven, Precursor-Influenced Approach

A. R. Indhu, Manickam Minakshi, R. Sivasubramanian and Gnanaprakash Dharmalingam

Nanomaterials (Basel, Switzerland), Vol.15(24), 1852

2025

DOI: https://doi.org/10.3390/nano15241852

PMID: 41441465

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Abstract

oxidation-stable copper particles

polymer-capped copper particles and precursor-mediated copper oxidation stability

Copper is a promising alternative to conventional plasmonic materials, though its practical use is hindered by a strong tendency to oxidize. Through systematic analysis of its vibrational, optical, morphological, structural, and surface potential properties, we confirmed the stability of copper (Cu) particles and highlighted the role of functional groups in modulating their oxidation susceptibility. Oxidation kinetics at 150 °C, in the presence of antioxidants and capping agents, as well as long-term colloidal stability, appear closely tied to the degradation of these stabilizers, which correlates with particle aggregation. Notably, precursor chemistry significantly affects oxidation behavior. Varying concentrations of polyvinylpyrrolidone (PVP) demonstrate a positive correlation with particle size control and thermal stability, indicating that PVP enhances oxidation resistance under the tested conditions. Our findings underscore most importantly the metallic phase’s stability after exposure to air at a temperature of 150 °C, drawing attention to a possible precursor and capping agent combination that can result in oxidation-stable Cu particles, positioning them as cost-effective candidates for replacing more expensive plasmonic metals across diverse applications.

Details

Title: A Focus on Thermal Durability and Oxidation Resistance and Morphology of Polymer Capped Copper Particles Through a Synthesis-Driven, Precursor-Influenced Approach
Authors/Creators: A. R. Indhu - PSG Institute of Advanced Studies
Manickam Minakshi - Murdoch University, Centre for Water, Energy and Waste
R. Sivasubramanian - Amrita Vishwa Vidyapeetham
Gnanaprakash Dharmalingam - PSG Institute of Advanced Studies
Publication Details: Nanomaterials (Basel, Switzerland), Vol.15(24), 1852
Publisher: MDPI; BASEL
Number of pages: 27
Identifiers: 991005845958207891
Murdoch Affiliation: Centre for Water, Energy and Waste
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 2 Chemistry; 2.74 Photocatalysts; 2.74.1823 Copper Oxide Nanostructures
Web Of Science research areas: Chemistry, Multidisciplinary; Materials Science, Multidisciplinary; Nanoscience & Nanotechnology; Physics, Applied
ESI research areas: Materials Science