| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Aziz, Md. Abdul
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Publications (7/7 displayed)
- 2024Optimizing Electrodeposition of Polyaniline on Various Woven Steel Mesh Sizes for Enhanced Supercapacitor Performance
- 2024Electrochemical detection of sulfite using gold nanoparticles decorated poly[2-(methacryloyloxy) ethyl] trimethylammonium chloride: kinetic and mechanistic studiescitations
- 2023A review of pharmacogenetic studies in the Bangladeshi populationcitations
- 2023Evaluation of the Association between FGFR2 Gene Polymorphisms and Breast Cancer Risk in the Bangladeshi Populationcitations
- 2023Metal Negatrode Supercapatteries: Advancements, Challenges, and Future Perspectives for High‐Performance Energy Storagecitations
- 2022TF and TCF4 gene polymorphisms are linked to autism spectrum disorder: a case–control studycitations
- 2021Physico-chemical properties and toxicological effects on plant and algal models of carbon nanosheets from a nettle fibre clonecitations
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article
Electrochemical detection of sulfite using gold nanoparticles decorated poly[2-(methacryloyloxy) ethyl] trimethylammonium chloride: kinetic and mechanistic studies
Abstract
<jats:title>Abstract</jats:title><jats:p>Given the widespread use of sulfites in various industries and their potential environmental and health impacts, accurate and efficient detection is crucial. The deployment of positively charged poly [2-(methacryloyloxy) ethyl] trimethylammonium chloride (PMTC) decorated with gold nanoparticles (AuNPs) offers a novel approach, enhancing sensitivity and specificity in the electrochemical detection of negatively charged sulfite ions (SO32-). A sensor for detecting SO32- was developed using PMTC decorated with AuNPs on a glassy carbon electrode (GCE). Transmission electron microscopy (TEM) was employed to examine the structural morphology of the composite material, and the formation of AuNPs was confirmed through ultraviolet-visible spectroscopy. Zeta potential analysis affirmed the positive charge of the PMTC composite, highlighting its effective coordination with the negatively charged SO32-. The surface conductivity of the modified GCE was studied using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). Kinetic analyses, focusing on scan rate and pH dependencies, elucidated the SO32- oxidation dynamics and the interaction between the positively charged PMTC and negatively charged SO32-. Quantitative evaluation was performed using the current-time (I-t) technique, achieving a limit of detection of 0.41 ± 0.003 µM (S/N = 3) within a linear range of 6.66 µM to 1020 µM. The modified electrode demonstrated remarkable stability, repeatability, and resistance to common interferents. Real sample analysis using laboratory tap water with a fixed SO32- concentration exhibited excellent recovery. The oxidation of SO32- on the AuNPs-PMTC-GCE proceeded via first-order kinetics and followed a stepwise pathway facilitated by the charge interactions.</jats:p>