Rational construction of novel strontium hexaferrite decorated graphitic carbon nitrides for highly sensitive detection of neurotoxic organophosphate pesticide in fruits

Umamaheswari Rajaji, Sathishkumar Chinnapaiyan, Tse Wei Chen, Shen Ming Chen, G. Mani, Veerappan Mani, M. Ajmal Ali, Fahad M.A. Al-Hemaid, M. Suliman El-Shikh

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

As a growing aspect of agriculture purposes, an extensive number of pesticides and insecticides that have been used to produce yield, and particularly, through toxic organo-pesticides and herbicide. Moreover, the long-term usage of organo-pesticides leads to health problems, which causes serious health threat to human beings. Therefore, monitoring the level of organo-pesticides in food products is highly essential for practical applications to ensure food safety. Herein, we successfully synthesized strontium hexaferrite (nanorods) decorated on porous graphitic carbon nitride (SrFe12O19/g-C3N4) electrocatalyst through the incorporation of metal precursors such as strontium nitrate, ferric nitrate, melamine and glucose via a facile hydrothermal process with excellent electrochemical performance towards the detection of fenitrothion (FTN). The structural and chemical features of the as synthesized SrFe12O19/g-C3N4 electrocatalyst were characterized by various spectroscopic and analytical methods. The SrFe12O19/g-C3N4/SPCE shows a most-improved electrocatalytic performances compared to other modified and unmodified SPCEs. Mainly, the SrFe12O19 NRs were highly interconnected with the g-C3N4 matrix, which provides a sufficient electrocatalytic ability for the rapid electrochemical performances and it has achieved higher BET surface area of 325 m2/g. Moreover, our proposed electrochemical sensor performs a good detection range from 0.005 to 378.15 μM with a low detection limit of 0.0014 μM (S/N=3) and sensitivity of the modified sensor is 19.23 μA μM−1 cm−2. The practicality of the proposed SrFe12O19/g-C3N4 modified sensor was manifested by the profitably determination of FTN in various fruits samples with acceptable recoveries.
Original languageEnglish (US)
JournalElectrochimica Acta
Volume371
DOIs
StatePublished - Mar 1 2021
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

  • General Chemical Engineering
  • Electrochemistry

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