Determination of Hydrodynamic Parameters of Chitosan Stabilized Bimetallic Nanoparticles

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DOI: https://doi.org/10.30564/jmmr.v5i1.4566

Abstract:
The hydrodynamic characteristics of bimetallic Ag/Cu and Co/Ag nanopar
ticles stabilized by chitosan were determined. The polydispersity index
and the diameter of nanoparticles were observed to decrease in contrast to
the original polymer during the creation of chitosan stabilized bimetallic
nanoparticles, decreasing from 0.342 to 0.12±0.04 and 2.5 micron to 180
nm, respectively. However, the diffusion coefficient of chitosan was in
creased from 0.2 cm2 /s to 2.71 cm2 /s during the production of stable bime
tallic nanoparticles. The lack of absorption bands at 500 nm and 700 nm-
900 nm in the UV spectra of the samples suggests that in the presence of
a reducing agent, copper (II) and cobalt (II) ions undergo full reduction.
The relationship between the synthesis conditions and the kind of structure
of bimetallic nanoparticles “core-shell” has been discovered. Silver atoms
have been shown to be both a core and a shell, depending on the synthesis
conditions and chemical nature of metal ions.
References:

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