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Title: A novel rapid synthesis of Fe{sub 2}O{sub 3}/graphene nanocomposite using ferrate(VI) and its application as a new kind of nanocomposite modified electrode as electrochemical sensor

Highlights: • A novel rapid synthesis of rGO–Fe{sub 2}O{sub 3} nanocomposite was developed using Fe(VI). • Fe(VI) as an environmentally friendly oxidant was introduced for GO synthesis. • Synthesized rGO–Fe{sub 2}O{sub 3} nanocomposite was applied as electrochemical sensor. • A non-enzymatic sensor was developed for H{sub 2}O{sub 2}. - Abstract: In this study, a novel, simple and sensitive non-enzymatic hydrogen peroxide electrochemical sensor was developed using reduced graphene oxide/Fe{sub 2}O{sub 3} nanocomposite modified glassy carbon electrode. This nanocomposite was synthesized by reaction of sodium ferrate with graphene in alkaline media. This reaction completed in 5 min and the products were stable and its deposition on the surface of electrode is investigated. It has been found the apparent charge transfer rate constant (ks) is 0.52 and transfer coefficient (α) is 0.61 for electron transfer between the modifier and glassy carbon electrode. Electrochemical behavior of this electrode and its ability to catalyze the electro-reduction of H{sub 2}O{sub 2} has been studied by cyclic voltammetry and chronoamperometry at different experimental conditions. The analytical parameters showed the good ability of electrode as a sensor for H{sub 2}O{sub 2} amperometric reduction.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5]
  1. Department of Chemistry, Payame Noor University, 19395-4697 Tehran (Iran, Islamic Republic of)
  2. (NNRL), Payame Noor University, Sirjan (Iran, Islamic Republic of)
  3. (Iran, Islamic Republic of)
  4. Department of Chemistry, Payame Noor University, Mashhad (Iran, Islamic Republic of)
  5. Department of Chemistry, Payame Noor University, Shiraz (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22475971
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 70; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; AMPEROMETRY; ELECTROCHEMISTRY; ELECTRODES; ELECTRON TRANSFER; GRAPHENE; HYDROGEN PEROXIDE; IRON OXIDES; NANOSTRUCTURES; OXIDES; REDUCTION; SENSORS; SURFACES; SYNTHESIS