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Journal of Analytical Methods in Chemistry
Volume 2017, Article ID 2028417, 9 pages
https://doi.org/10.1155/2017/2028417
Research Article

Electroanalytical Sensing of Bromides Using Radiolytically Synthesized Silver Nanoparticle Electrocatalysts

1Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12–16, 11158 Belgrade, Serbia
2Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia

Correspondence should be addressed to Biljana Šljukić; sr.ca.gb.hff@akjlib

Received 16 May 2017; Revised 26 August 2017; Accepted 30 August 2017; Published 17 October 2017

Academic Editor: Boryana M. Nikolova-Damyanova

Copyright © 2017 Jadranka Milikić et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Monitoring bromides (Br) is of crucial importance since bromates, potential human carcinogens, are formed during ozonation of water containing bromides in concentrations >100 μg L−1. Within this study, silver (Ag) and four carbon-supported Ag catalysts were synthesized by the γ-radiation method and their morphology and structure examined using transmission electron microscopy, X–ray diffraction, and UV-Vis analysis. The nanocatalysts were tested for Br sensing in aqueous media using cyclic voltammetry. All five Ag materials exhibited electroactivity for sensing of Br ions, with pure Ag catalyst giving the best response to Br ions presence in terms of the lowest limit of detection. Sensing of bromides was also explored in tap water after addition of bromides suggesting that herein prepared catalysts could be used for bromides detection in real samples. Furthermore, sensing of other halogen ions, namely, chlorides and iodides, was examined, and response due to chloride presence was recorded.