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A Voltammetric Sensor Based on MgFe2O4 Decorated on Reduced Graphene Oxide-modified Electrode for Sensitive and Simultaneous Determination of Catechol and Hydroquinone

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2018
Authors
Ognjanović, Miloš
Stanković, Dalibor
Fabian, Martin
Vukadinovic, Aleksandar
Prijovic, Zeljko
Dojčinović, Biljana
Antić, Bratislav
Article (Published version)
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Abstract
In this work facile one step synthesis of magnesium ferrite (MgFe2O4) nanoparticles decorated on reduced graphene oxide (MgFe"RGO) using a microwave assisted hydrothermal procedure is reported. The synthesized material was characterized with help of several techniques and applied for the modification of glassy carbon electrode. Such prepared electrode was utilized for successive simultaneous detection of structurally similar compounds, 1,2- and 1,4-dihydroxibenzenes (catechol (CC) and hydroquinone (HQ)), using differential pulse voltammetry technique. It was found that oxidation current increases linearly with the concentrations of both investigated compounds. Detection limits for both species are LT = 0.31 mu M. The best analytical response in the presence of both CC and HQ, taking into account peak shape and peak current, was obtained at pH 5.6 utilizing acetate buffer solution. The often-presented species in the surface waters as well as gallic acid and caffeine do not interfere wi...th determination of CC and HQ, while ascorbic acid shows high interference. The method is successfully applied for detection of catechol and hydroquinone in real samples analyses.

Keywords:
MgFe"RGO nanocomposite / Magnesium ferrite / Dihydroxibenzenes / Differential pulse voltammetry
Source:
Electroanalysis, 2018, 30, 11, 2620-2627
Publisher:
  • Wiley-Blackwell, Malden
Projects:
  • Ministry of Education, Science and Technological Development of the Republic of Serbia - E!9982
  • Strengthening of the MagBioVin Research and Innovation Team for Development of Novel Approaches for Tumour Therapy based on Nanostructured Materials (EU-621375)

DOI: 10.1002/elan.201800357

ISSN: 1040-0397

WoS: 000450148200013

Scopus: 2-s2.0-85052920134
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/2354
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