Flower-Like ZnO-Decorated Polyaniline–Graphene Oxide Nanocomposite for Electrochemical Oxidation of Imidacloprid: A Hybrid Nanocomposite Sensor

A surfactant-based soft-template method has been used to synthesize flower-like zinc oxide–polyaniline–graphene oxide (ZnO–PANI–GO) hybrid nanocomposites. Mineralization of an agricultural organic pollutant, viz. imidacloprid (Imd), in aqueous environment is investigated by cyclic voltammetry (CV) u...

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Bibliographic Details
Published in:Journal of electronic materials 2019-12, Vol.48 (12), p.7747-7755
Main Authors: Tawade, Anita K., Mohan Kumar, D., Talele, Paurnima, Sharma, Kiran Kumar K., Tayade, Shivaji N.
Format: Article
Language:English
Subjects:
Aqueous environments
Characterization and Evaluation of Materials
Chemistry and Materials Science
Electrochemical oxidation
Electrodes
Electronics and Microelectronics
Glassy carbon
Graphene
Imidacloprid
Instrumentation
Materials Science
Nanocomposites
Optical and Electronic Materials
Oxidation
Pesticides
Pollutants
Polyanilines
Recovery
Solid State Physics
Zinc oxide
Zinc oxides
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Summary:A surfactant-based soft-template method has been used to synthesize flower-like zinc oxide–polyaniline–graphene oxide (ZnO–PANI–GO) hybrid nanocomposites. Mineralization of an agricultural organic pollutant, viz. imidacloprid (Imd), in aqueous environment is investigated by cyclic voltammetry (CV) using a glassy carbon (GCE) modified with ZnO–PANI–GO hybrid nanocomposite as working electrode. CV of the modified ZnO–PANI–GO/GCE hybrid nanocomposite electrode in the presence of Imd in acetate buffer (pH 5.8) revealed an oxidation potential of 0.36 V. The linear range of detection was evaluated using Imd concentrations from 1.25 × 10 −7  M to 2.12 × 10 −6  M. Limits of detection and quantification of 1.3 × 10 −8  M and 1.3 × 10 −7  M were calculated, being the lowest reported to date compared with other techniques using nano/nanocomposite materials as probe or modified electrodes. These results suggest that hybrid nanocomposites can be cost-effective materials for detection of Imd pesticide residue. Recovery testing using various samples exhibited 100% recovery.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-019-07600-0