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Facile preparation of poly (diallyldimethylammonium chloride) modified reduced graphene oxide for sensitive detection of nitrite

Authors
Journal
Electrochemistry Communications
1388-2481
Publisher
Elsevier
Volume
47
Identifiers
DOI: 10.1016/j.elecom.2014.07.016
Keywords
  • Graphene
  • Nitrite
  • Electrochemical Sensor
  • Poly (Diallyldimethylammonium Chloride)
  • Nanocomposite
Disciplines
  • Chemistry
  • Communication

Abstract

Abstract In this communication, a sensitive electrochemical nitrite sensor was constructed based on poly (diallyldimethylammonium chloride) (PDDA) functionalized reduced graphene oxide (PDDA-rGO). The preparation of PDDA-rGO is quite facile, and the PDDA-rGO exhibits good dispersity and high stability in water, together with good conductivity and positive surface charge. All these factors lead to a greatly enhanced catalysis of PDDA-rGO for the nitrite oxidation compared with that of unmodified rGO or bare glassy carbon electrode. Based on PDDA-rGO, an electrochemical nitrite sensor with low overpotential (0.75V), wide linear range (0.5μM–2mM), low detection limit (0.2μM), good stability and selectivity was fabricated, which exhibited satisfied recovery for detecting nitrite in drinking water.

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