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 | |
| Publication status | Published - 8 Nov 2023 |
| MoE publication type | A1 Journal article-refereed |
Funding
The authors thankfully acknowledge the funding provided by the Bio4Energy programme, Kempe Foundations [JCK-JCK-2140 and JCSMK23-0075], Wallenberg Wood Science Center under auspices of Alice and Knut Wallenberg Foundation, and the Ministry of Science and Technology, Taiwan. The authors conducted experiments at the Technical Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University, Sweden, and also at the Johan Gadolin Process Chemistry Centre at Åbo Akademi University in Finland. In this work, the authors particularly wish to honor the late Carl Kempe of Kempe Foundations who for so many years has supported them: rest in peace. They also acknowledge Dr. Shamasree Ghosh and Dr. Tamilselvi Shanmugam for their help with AFM. Additionally, this article represents a considerable portion of Gopinathan Manavalan’s doctoral research conducted at National Chung Hsing University, Taiwan.
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