Surface Plasmon Resonance study of Ag nanoparticles colloidal

Waleed  k. Mahmood; Rawa  k. Ibrahim; Asama  N. Naje

doi:10.24996/ijs.2017.58.4B.12

Authors

Waleed k. Mahmood Department of Physics, Collage of Science, University of Baghdad, Baghdad, Iraq.
Rawa k. Ibrahim Ministry of Science and Technology, Baghdad, Iraq.
Asama N. Naje Ministry of Science and Technology, Baghdad, Iraq.

DOI:

https://doi.org/10.24996/ijs.2017.58.4B.12

Keywords:

Ag nanoparticle, electrochemical method, surface Plasmon resonance, EDX test

Abstract

Silver nanoparticles (Ag-NPs) have been prepared using the electro-chemical
method. The experimental setup of this technique consist of two electrodes of pure
silver (99.2 %), the applied voltage on the electrodes is 20 V and the current through
the colloidal was about 0.4 Amp. The silver nanoparticles crystallization has been
studied; the crystalline structure appears Face center Cubic. The optical properties of
silver nanoparticles are strongly affected by the Local Surface Plasmon Resonance
(LSPR). The wavelength of maximum absorption band for an Ag NPs have a range
(~350nm-550nm).