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Nitrogen-doped graphene-silver nanodendrites for the non-enzymatic detection of hydrogen peroxide
Electrochimica Acta (2015)
Abstract

An organic-metal hybrid film based on nitrogen-doped graphene-silver nanodendrites (Ag-NG) was fabricated on an indium tin oxide (ITO) electrode using a simple electrophoretic and electrochemical sequential deposition approach. The microwave-assisted method was utilized for the synthesis of nitrogen-doped graphene. This method involves a three-step process consisting of graphite oxidation, exfoliation, and finally chemical reduction with the use of hydrazine as the reducing agent, which leads to the simultaneous reduction of graphene oxide and production of nitrogen-doped graphene. The morphology and structure of the as-fabricated electrode were determined by X-ray diffraction, field emission electron microscopy and transmission electron microscopy. The as-prepared Ag-NG-modified ITO electrode exhibited superior electrocatalytic activity toward hydrogen peroxide (H2O2) reduction, with a wide linear detection range of 100 mu M to 80 mM (r = 0.9989) and a detection limit of 0.26 mu M with a signal-to-noise ratio of 3. Furthermore, the fabricated non-enzymatic H2O2 electrochemical sensor exhibited excellent stability and reproducibility. (C) 2014 Elsevier Ltd. All rights reserved. Link to Full-Text Articles : http://www.sciencedirect.com/science/article/pii/S0013468614022269

Keywords
  • Silver nanodendrite,
  • N-graphene,
  • electrodeposition,
  • Hydrogen peroxide,
  • electrophoretic deposition
Disciplines
Publication Date
January 1, 2015
Publisher Statement
Times Cited: 0 BASIRUN, WAN JEFREY BASIRUN/B-8008-2010 0
Citation Information
"Nitrogen-doped graphene-silver nanodendrites for the non-enzymatic detection of hydrogen peroxide" Electrochimica Acta Vol. 151 (2015)
Available at: http://works.bepress.com/facultyofengineering_universityofmalaya/138/