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A Highly Selective Real-Time Electroanalytical Detection of Sulfide Via Laser-Induced Graphene Sensor Cover

A Highly Selective Real-Time Electroanalytical Detection of Sulfide Via Laser-Induced Graphene Sensor

Open Access
|Feb 2024

Abstract

Herein, a novel miniaturized sensor for sulfide detection is presented. The sensor was fabricated over a flexible polyimide substrate via CO2 laser ablation followed by surface modification with methylene blue acting as a redox mediator. The sensor showed an acceptable linear detection range (0.5 μM–1 mM), and excellent limit of detection (0.435 μM) and limit of quantification (2.45 μM). Further, remarkable sensitivity of 0.295 μA/(μM mm2) for 0.5–50 μM and 0.0047 μA/(μM mm2) for 100–1 mM was obtained. The signal-to-noise ratio was found to be 2.76 and the performance was validated by real lake water samples.

Language: English
Submitted on: Aug 9, 2023
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Published on: Feb 7, 2024
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2024 Ritesh Kumar Singh, Khairunnisa Amreen, Satish Kumar Dubey, Sanket Goel, published by Professor Subhas Chandra Mukhopadhyay
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.