Electrochemically Modified Poly(dicyandiamide) Electrodes for Detecting Hydrazine in Neutral pH

Abstract

A new technique for sensing nanomolar concentrations of hydrazine in water samples is reported. A screen-printed carbon electrode (SPCE) altered using an amine-azo functional group encompassing poly-(dicyandiamide) is used in this study. The modified electrode exhibits an enhanced activity toward hydrazine detection at a lower overpotential and broad linear scale between 20 nM and 1 mM, with an accurate sensitivity value of 0.1 nA mu m(-1) cm(-2). To the best of our knowledge, poly-(dicyandiamide)-modified electrodes exhibit one of the lowest limits of detection for any metal-free electrode that detects 6.7 nM (S/N = 3) of hydrazine. The method established sufficient selectivity and better recoveries. Finally, the poly-(dicyandiamide)-modified SPCE* is highly suitable for electrochemical determination of hydrazine in water samples from tap and lake.

Published in

Industrial & Engineering Chemistry Research
2023, volume: 62, number: 44, pages: 18271-18279
Publisher: AMER CHEMICAL SOC

SLU Authors

• Manavalan, Gopinathan

  • Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
    
  • National Chung Hsing University
  • Umeå University

• Thyrel, Mikael

  • Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
    

• Lestander, Torbjörn

  • Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Other Chemical Engineering

Publication identifier

• DOI: https://doi.org/10.1021/acs.iecr.3c02669

Permanent link to this page (URI)

https://res.slu.se/id/publ/127339