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Title AFM Investigation of Epoxy Fracture Surfaces Indicating Nanoplasticity
Authors Eskandari, K.
Ghourchian, H.
ORCID
Keywords Gold nanoparticles
Silver nanoparticles
Gold-silver hybrid nanoparticles
Type Conference Papers
Date of Issue 2015
URI http://essuir.sumdu.edu.ua/handle/123456789/42511
Publisher Sumy State University
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Citation Eskandari, K. AFM Investigation of Epoxy Fracture Surfaces Indicating Nanoplasticity [Текст] / K. Eskandari, H. Ghourchian // Nanomaterials: Applications & Properties (NAP-2015) : Proceedings of the International Conference. — Sumy : Sumy State University, 2015. — V.4, No2. — 02NNSA04.
Abstract Noble metal nanoparticles have a great potential for biological study, especially the use of gold nanoparticles is very popular. In this work gold nanoparticles (GNPs), silver nanoparticles (SNPs) and goldsilver hybrid nanoparticles (HNPs) synthesized and used as a carrier for electrochemical investigation of redox protein. Optical characterization of these nanoparticles was performed by UV-Vis spectroscopy. The maximum of the plasmon band for GNPs, SNPs and HNPs (ratio of 1:1) are 524, 392 and 455 nm respectively. The optical absorption spectra of HNPs solution shows only one plasmon absorption, it is concluded that mixing of gold and silver leads to a homogeneous formation of alloy nanoparticles. LCR meter study shows the HNPs is best conductance in compare of GNPs and SNPs. Therefore, the electron transfer of the homogenous GOx, HRP and Hb was investigates by electrochemical method in presence of HNPs. They demonstrated quasi-reversible cyclic voltammograms with a formal potential of -479, -178 and -168 mV in 50 mM phosphate buffer solution at pH 7.4 respectively.
Appears in Collections: Наукові видання (ЕлІТ)

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