A Sensitive Electrochemical Sensor Based on Graphene Oxide Nanosheets Decorated by Fe<sub>3</sub>O<sub>4</sub>@Au Nanostructure Stabilized on Polypyrrole for Efficient Triclosan Sensing
Asma Saljooqi, Tayebeh Shamspur, Ali Mostafavi
Abstract
Abstract Triclosan is broadly utilized as preservative or antiseptic in various cosmetic and personal care products. It becomes hazardous for environmental safety and human health more than a certain concentration. In this research, graphene oxide (GO) nanosheets were prepared by composing Fe 3 O 4 @Au nanostructure decorated GO together with polypyrrole (PPy) (Fe 3 O 4 @Au‐PPy/GO nanocomposite) in a facile way. The composite excellent increased the electrochemical response, presenting a high sensitive electrochemical method for triclosan detection. The synthesized Fe 3 O 4 @Au‐PPy/GO nanocomposite was characterized for its morphological, magnetically and structural properties by FESEM‐mapping, TEM, and XRD. The Fe 3 O 4 @Au‐PPy/GO nanocomposites modified glassy carbon electrodes (GCE), Fe 3 O 4 @Au‐PPy/GO GCE, showed a higher sensitivity good stability, reproducibility, lower LOD (2.5×10 −9 M) and potential practical application in electrochemical detection of triclosan under optimized experimental conditions.