Flexible Inkjet Printed Ag/rGO/Nafion-Ru(NH3)63+/2+ Two-Electrode Hydrogen Sulfide Sensor for Real-Time Monitoring in Liquids
Journal
IEEE Journal on Flexible Electronics
Journal Volume
3
Journal Issue
2
Start Page
82-86
ISSN
2768-167X
Date Issued
2024-02
Author(s)
Abstract
In this article, we demonstrate real-time hydrogen sulfide monitoring in liquid using a flexible inkjet printed Ag/rGO/Nafion-Ru(NH3)3 6+/2+ two-electrode amperometric sensor. The electrodes are inkjet-printed on a flexible substrate, Kapton film, where silver nanoparticles (Ag NPs) are printed as conductive electrodes. The working and reference electrodes (REs) are printed Ag/rGO/Nafion-Ru(NH3)3 6+/2+ and Ag/AgCl(s)/PU layers, respectively. The as-printed sensor exhibits a linear sensitivity of 40 nA/μ M/cm2 (R = 99.7%) and an limit of detection (LoD) of 0.75 μ M in the range of 1 120 μ M. The sensor shows the tendency of increase and saturation of the hydrogen sulfide released from cysteine in heating eggs, indicating the effectiveness of the sensor for real-time monitoring.
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Type
journal article