Open Access

ARTICLE

Method of Receive a Nanoparticles of Noble Metals with Average Size Less Than 3 nm for LSPR Research

by

1 Institute of Physics PAS al. Lotników 32/46, PL 02668 Warsaw
2 Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, PL 02089 Warsaw

Fluid Dynamics & Materials Processing 2017, 13(1), 49-57. https://doi.org/10.3970/fdmp.2017.013.049

Abstract

The paper presents a simple although effective method of obtaining gold and silver nanoparticles of average size of less than 3 nm. The nanoparticles were obtained by the Bredig’s electric arc method. Then colloidal preparations were centrifuged with acceleration equals to 29000 xg. It has been showed that subjecting the colloid to the hour centrifugation process repeated four times allows to obtain nanoparticles whose size does not exceed 5 nm. The nanoparticles prepared using this method were characterized by a high purity that depended only on the water and the cleanliness of the noble metal wire which have been used. Furthermore, it was observed that the absence of conglomerates and joins of the particles is typical for transmission electron microscopy methods.

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