Methyl parathion detection in vegetables and fruits using silver@graphene nanoribbons nanocomposite modified screen printed electrode | Zendy

Mani Govindasamy | Zendy; Veerappan Mani | Zendy; ShenMing Chen | Zendy; Tse-Wei Chen | Zendy; Ashok K. Sundramoorthy | Zendy

Open Access

Methyl parathion detection in vegetables and fruits using silver@graphene nanoribbons nanocomposite modified screen printed electrode

Author(s) -

Mani Govindasamy,

Veerappan Mani,

ShenMing Chen,

Tse-Wei Chen,

Ashok K. Sundramoorthy

Publication year - 2017

Publication title -

scientific reports

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.24

H-Index - 213

ISSN - 2045-2322

DOI - 10.1038/srep46471

Subject(s) - nanocomposite , graphene , electrode , materials science , raman spectroscopy , electrochemistry , graphene nanoribbons , nanotechnology , carbon nanotube , chemical engineering , electrochemical gas sensor , selectivity , catalysis , chemistry , organic chemistry , physics , engineering , optics

We have developed a sensitive electrochemical sensor for Organophosphorus pesticide methyl parathion (MP) using silver particles supported graphene nanoribbons (Ag@GNRs). The Ag@GNRs nanocomposite was prepared through facile wet chemical strategy and characterized by TEM, EDX, XRD, Raman, UV-visible, electrochemical and impedance spectroscopies. The Ag@GNRs film modified screen printed carbon electrode (SPCE) delivers excellent electrocatalytic ability to the reduction of MP. The Ag@GNRs/SPCE detects sub-nanomolar concentrations of MP with excellent selectivity. The synergic effects between special electrocatalytic ability of Ag and excellent physicochemical properties of GNRs (large surface area, high conductivity, high area-normalized edge-plane structures and abundant catalytic sites) make the composite highly suitable for MP sensing. Most importantly, the method is successfully demonstrated in vegetables and fruits which revealed its potential real-time applicability in food analysis.

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