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

Gopinathan Manavalan; Thiyagarajan Natarajan; Kayode Omotayo Adeniyi; Jyh Myng Zen; Solomon Tesfalidet; Mikael Thyrel; Torbjörn A. Lestander; Subba Reddy Alla; Jyri Pekka Mikkola

doi:10.1021/acs.iecr.3c02669

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

Gopinathan Manavalan^*, Thiyagarajan Natarajan, Kayode Omotayo Adeniyi, Jyh Myng Zen, Solomon Tesfalidet, Mikael Thyrel, Torbjörn A. Lestander, Subba Reddy Alla, Jyri Pekka Mikkola

^*Corresponding author for this work

Industrial Chemistry and Reaction Engineering

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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 μm^-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.

Original language	English
Pages (from-to)	18271-18279
Number of pages	9
Journal	Industrial and Engineering Chemistry Research
Volume	62
Issue number	44
DOIs	https://doi.org/10.1021/acs.iecr.3c02669
Publication status	Published - 8 Nov 2023
MoE publication type	A1 Journal article-refereed

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https://urn.fi/URN:NBN:fi-fe202401041315

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title = "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 μm-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.",

author = "Gopinathan Manavalan and Thiyagarajan Natarajan and Adeniyi, {Kayode Omotayo} and Zen, {Jyh Myng} and Solomon Tesfalidet and Mikael Thyrel and Lestander, {Torbj{\"o}rn A.} and Alla, {Subba Reddy} and Mikkola, {Jyri Pekka}",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors. Published by American Chemical Society.",

year = "2023",

month = nov,

day = "8",

doi = "10.1021/acs.iecr.3c02669",

language = "English",

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T1 - Electrochemically Modified Poly(dicyandiamide) Electrodes for Detecting Hydrazine in Neutral pH

AU - Manavalan, Gopinathan

AU - Natarajan, Thiyagarajan

AU - Adeniyi, Kayode Omotayo

AU - Zen, Jyh Myng

AU - Tesfalidet, Solomon

AU - Thyrel, Mikael

AU - Lestander, Torbjörn A.

AU - Alla, Subba Reddy

AU - Mikkola, Jyri Pekka

PY - 2023/11/8

Y1 - 2023/11/8

N2 - 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 μm-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.

AB - 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 μm-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.

UR - http://www.scopus.com/inward/record.url?scp=85177814574&partnerID=8YFLogxK

U2 - 10.1021/acs.iecr.3c02669

DO - 10.1021/acs.iecr.3c02669

M3 - Article

AN - SCOPUS:85177814574

SN - 0888-5885

VL - 62

SP - 18271

EP - 18279

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 44

ER -

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

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