Nanoparticulate copper - Routes towards oxidative stability

V. Engels, F. Benaskar, D.A. Jefferson, B.F.G. Johnson, A.E.H. Wheatley

Research output: Contribution to journalArticleAcademicpeer-review

61 Citations (Scopus)
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Abstract

A modified polyol-based reduction method in ethylene glycol that incorporates poly(N-vinylpyrrolidone) (PVP, Mav = 10000; 40000; 55000) as polymeric anti-agglomerant alongside a reducing additive (N2H4·H2O, NaBH4, NaH2PO2·H2O) has been employed to investigate the influence of synthetic parameters on the purity, morphology and stability of an array of polymer-coated copper nanoparticles. While data point to ethylene glycol being capable of acting as a reductant in this system, the use of NaH2PO2·H2O as co-reductant in tandem with the presence of PVP (Mav 40000) has rendered nanoparticles with a mean size distribution of 9.6 ± 1.0 nm that exhibit stability towards oxidation for several months. These data allow us to probe fundamentally how oxidatively stable nano-copper might be achieved.
Original languageEnglish
Pages (from-to)6496-6502
Number of pages7
JournalDalton Transactions
Volume39
DOIs
Publication statusPublished - 2010

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