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Synthesis of Copper Nanosize Particles in Anionic Reverse Micelles: Effect of the Addition of a Cationic Surfactant on the Size of the Crystallites
Laboratoire SRSI, Universite Pierre et Marie Curie, Paris, France; CEN Saclay, DRECAM-SCM Bat 522, Gifsur Yvette, France; Depagrtment of Applied Mathematics, Canberra, Australia; Universite Pierre et Marie Curie, France; CEN Saclay, France.
Laboratoire SRSI, Universite Pierre et Marie Curie, Paris, France; CEN Saclay, DRECAM-SCM Bat 522, Gifsur Yvette, France; Depagrtment of Applied Mathematics, Canberra, Australia; Universite Pierre et Marie Curie, France; CEN Saclay, France.
Laboratoire SRSI, Universite Pierre et Marie Curie, Paris, France; CEN Saclay, DRECAM-SCM Bat 522, Gifsur Yvette, France; Depagrtment of Applied Mathematics, Canberra, Australia; Universite Pierre et Marie Curie, France; CEN Saclay, France.
Laboratoire SRSI, Universite Pierre et Marie Curie, Paris, France; CEN Saclay, DRECAM-SCM Bat 522, Gifsur Yvette, France; Depagrtment of Applied Mathematics, Canberra, Australia.
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1995 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 11, no 7, p. 2385-2392Article in journal (Refereed) Published
Abstract [en]

The size of copper nanoparticles in reverse micelles can be controlled by varying the water content of anionic reverse micelles (AOT = sodium bis(2-ethylhexyl)sulfosuccinate). In the presence of cetyltrim-ethylammonium chloride (CTAC), depending on the concentration, the size of the particles is strongly affected. At a low CTAC concentration ([CTAC] = 4 × 10-4 M), an unexpectedly large increase in the size is observed. At the other extreme, a decrease in the size is observed at higher CTAC concentration ([CTAC] = 6.4 × 10-3 M). The increase in the size at low CTAC concentration could be explained in terms of the formation of superaggregates containing most of the cationic surfactant. At higher CTAC concentrations, a random distribution of the positively charged surfactant takes place and the decrease in the size could be due to a decreasein the intermicellar attraction. Furthermore, the yield of particles drastically increases which is attributed to a change in the redox potential.

Place, publisher, year, edition, pages
1995. Vol. 11, no 7, p. 2385-2392
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Chemical Sciences
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URN: urn:nbn:se:hig:diva-25392DOI: 10.1021/la00007a012Scopus ID: 2-s2.0-0001239845OAI: oai:DiVA.org:hig-25392DiVA, id: diva2:1148023
Available from: 2017-10-09 Created: 2017-10-09 Last updated: 2018-03-13Bibliographically approved

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Bjorling, Mikael

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