Ultrasonic Synthesis of Polysodium-4-styrene Sulfonate coated Functionalized MWCNTs for Electrochemical Detection of Anti-Oxidant Drug in Red Wine

摘要

A greatly selective, and sensitive 3,4-Dihydroxy-trans-cinnamate sensor based on a poly (sodium 4-styrenesulfonate) (PSSS) coated with functionalized multiwalled carbon nanotubes (PSSS@fMWCNTs) composite modified electrode was improved. The fabricated PSSS@f-MWCNTs/GCEdisplayed an excellent voltammetric response for caffeic acid to compared control electrodes. Underoptimum conditions, the modified electrode showed a wide linear range at caffeic acid concentrationsof 0.4?173.9 μM. The limit of detection is 35 nM and sensitivity is 17.44 μA μM-1cm-2. The improvedsensor method was showed good anti-interference, reproducibility, good repeatability, and excellentstorage stability.