Nanoparticulate copper - routes towards oxidative stability

被引：61

作者：

Engels, Volker ^{[1
]}

Benaskar, Faysal ^{[2
]}

Jefferson, David A. ^{[1
]}

Johnson, Brian F. G. ^{[1
]}

Wheatley, Andrew E. H. ^{[1
]}

机构：

[1] Univ Chem Labs, Cambridge CB2 1EW, England

[2] Eindhoven Univ Technol, Lab Chem Reactor Engn, NL-5600 MB Eindhoven, Netherlands

来源：

DALTON TRANSACTIONS | 2010年 / 39卷 / 28期

基金：

英国工程与自然科学研究理事会;

关键词：

METAL NANOPARTICLES; CU NANOPARTICLES; SIZE CONTROL; PARTICLES; REDUCTION; CLUSTERS; CATALYST; LIGAND;

D O I：

10.1039/c0dt00134a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A modified polyol-based reduction method in ethylene glycol that incorporates poly(N-vinylpyrrolidone) (PVP, M-av = 10 000; 40 000; 55 000) as polymeric anti-agglomerant alongside a reducing additive (N2H4 center dot H2O, NaBH4, NaH2PO2 center dot 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 center dot H2O as co-reductant in tandem with the presence of PVP (Mav 40 000) 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.

引用

页码：6496 / 6502

页数：7

共 43 条

[1] Formation of Cu and Cu2O nanoparticles by variation of the surface ligand:: Preparation, structure, and insulating-to-metallic transition [J].