Naslov
Electroanalytical methods in characterization of metal sulphide nanoparticles in water environment

Autori
Ciglenečki, Irena ; Marguš, Marija ; Milanović, Ivana ; Lovrić, Mario ; Krznarić, Damir

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
254th American Chemical Society April 2017

Mjesto i datum
San Francisco (CA), Sjedinjene Američke Države, 02.04.2017. - 06.04.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Recenziran

Ključne riječi
nanpoarticles ; amerometry ; voltammetry ; dynamic light scattering ; chemometrics

Sažetak
Electroanalytical methods due to its simplicity and prompt response, low cost and relatively high sensitivity and selectivity, are good alternative analytical technique for characterization and quantification of different nanoparticles (NPs) in water environment. Several experiments were designed to monitor in parallel to voltammetric and amperometric measurements, physico-chemical and surface characteristics (ζ – potential and size) of the studied metal sulphide NPs (FeS, PbS, Ag2S, CdS) under same experimental conditions. It was shown that electrochemical signals produced by studied NPs from bulk solution and measured by DLS, ζ - potential and size of the the same NPs, is changing with electrolyte concentrations as well as with its composition. Our results indicate significant relationship between measured ζ - potential and size of metal sulphide NPs and recorded amperometric and voltametric peak charges, indicating great potential of electrochemistry in characterization of physico-chemical and surface chemistry features of metal sulphide NPs in water environment. The best electrochemical response is obtained in presence of small NPs, < 100 nm.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Interdisciplinarne prirodne znanosti

POVEZANOST RADA