A Highly Selective Real-Time Electroanalytical Detection of Sulfide Via Laser-Induced Graphene Sensor-Reference-Cited by-同舟云学术

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

Published:2024-01-01 Issue:1 Volume:17 Page:
ISSN:1178-5608
Container-title:International Journal on Smart Sensing and Intelligent Systems
language:en
Short-container-title:

Author:

Singh Ritesh Kumar¹²,Amreen Khairunnisa¹²,Dubey Satish Kumar²³,Goel Sanket¹²

Affiliation:

1. Department of Electrical and Electronics Engineering , Birla Institute of Technology and Science (BITS) Pilani , Hyderabad Campus , Hyderabad , India

2. MEMS, Microfluidics and Nanoelectronics (MMNE) Lab , Birla Institute of Technology and Science (BITS) Pilani , Hyderabad Campus , Hyderabad , India

3. Department of Mechanical Engineering , Birla Institute of Technology and Science (BITS) Pilani , Hyderabad Campus , Hyderabad , India

Abstract

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.

Publisher

Walter de Gruyter GmbH

Link

https://www.sciendo.com/pdf/10.2478/ijssis-2024-0001

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