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N. N. Begletsova, O. A. Shinkarenko, E. I. Selifonova, O. Yu. Tsvetkova, A. J. K. Al-Alwani, A. M. Zakharevich, R. K. Chernova, E. G. Glukhovskoy
Synthesis of
copper nanoparticles using of hydrazine in micellar solutions of sodium dodecyl
sulphate
Abstract
The influence of the synthesis conditions and the
composition of the reaction medium on the size and morphology of nanoparticles
(NPs) of copper in systems Cu(II) – N2H4 – sodium
dodecyl sulphate (SDS) were investigated. The scanning electron microscopy
(SEM) method shows: size of NPs varies in the range of 30–90 nm, the average diameter is 40–45 nm and
the shape of the low frequency copper is spherical. Dimensions of copper NPs
(up to 400 nm) were determined. It was shown spectrophotometrically that the
stabilization of copper dispersions that are resistant to oxidation,
aggregation and sedimentation occurs at molar ratios of Cu(II) : N2H4
of 1:100; 1:200; 1:300 in micellar solutions of SDS. A hypsochrome shift of the
absorption band of the surface plasmon resonance (SPR) of low-frequency copper
is also established: 574 nm – 568 nm – 564 nm when the molar
ratio of the Cu(II) : N2H4 is changing.
Key words:
copper nanoparticles; method of a chemical reduction; hydrazine; sodium dodecyl
sulphate.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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