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Materials 2016, 9(10), 809; doi:10.3390/ma9100809

Synthesis of Copper Nanoparticles in Ethylene Glycol by Chemical Reduction with Vanadium (+2) Salts

1
DCCI—Department of Chemistry and Industrial Chemistry, via Dodecaneso 31, Genova 16145, Italy
2
Nanophysics Department, Istituto Italiano di Tecnologia, via Morego 30, Genova 16163, Italy
3
Nanochemistry Department, Istituto Italiano di Tecnologia, via Morego 30, Genova 16163, Italy
4
DICCA—Department of Civil, Chemical and Environmental Engineering, Chemical Engineering Section, via Opera Pia 15, Genova 16145, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Erik Reimhult
Received: 31 July 2016 / Revised: 18 September 2016 / Accepted: 26 September 2016 / Published: 29 September 2016
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Abstract

Copper nanoparticles have been synthesized in ethylene glycol (EG) using copper sulphate as a precursor and vanadium sulfate as an atypical reductant being active at room temperature. We have described a technique for a relatively simple preparation of such a reagent, which has been electrolytically produced without using standard procedures requiring an inert atmosphere and a mercury cathode. Several stabilizing agents have been tested and cationic capping agents have been discarded owing to the formation of complex compounds with copper ions leading to insoluble phases contaminating the metallic nanoparticles. The elemental copper nanoparticles, stabilized with polyvinylpyrrolidone (PVP) and sodium dodecyl sulphate (SDS), have been characterized for composition by energy dispersive X-ray spectroscopy (EDS), and for size by dynamic light scattering (DLS), and transmission electron microscopy (TEM), giving a size distribution in the range of 40–50 nm for both stabilizing agents. From a methodological point of view, the process described here may represent an alternative to other wet-chemical techniques for metal nanoparticle synthesis in non-aqueous media based on conventional organic or inorganic reductants. View Full-Text
Keywords: copper; nanoparticles; bottom-up; ethylene glycol; reduction; surfactant copper; nanoparticles; bottom-up; ethylene glycol; reduction; surfactant
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Reverberi, A.P.; Salerno, M.; Lauciello, S.; Fabiano, B. Synthesis of Copper Nanoparticles in Ethylene Glycol by Chemical Reduction with Vanadium (+2) Salts. Materials 2016, 9, 809.

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