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

Sammanfattning

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.

Publicerad i

Industrial & Engineering Chemistry Research
2023, volym: 62, nummer: 44, sidor: 18271-18279
Utgivare: AMER CHEMICAL SOC

SLU författare

• Manavalan, Gopinathan

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    
  • National Chung Hsing University, Xingda
  • Umeå Universitet

• Thyrel, Mikael

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

• Lestander, Torbjörn

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Annan kemiteknik

Publikationens identifierare

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

Permanent länk till denna sida (URI)

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