Comparative analysis of pH sensing performance of nitrogen-doped ZnO on screen-printed silver and carbon electrodes

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY Journal of Solid State Electrochemistry Pub Date : 2024-09-19 DOI:10.1007/s10008-024-06078-z

Alisha Mary Manoj, Leema Rose Viannie

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Abstract

This paper presents a comparative study of the electrochemical pH sensing characteristics of N-ZnO on a carbon screen-printed electrode (N-ZnO/C) and a silver screen-printed electrode (N-ZnO/Ag). The surface-morphological properties of the film were evaluated using scanning electron microscopy. Electrochemical evaluation was carried out in the presence of common salts present in physiological fluids like NaCl and KCl. Cyclic voltammetry (CV) and chronoamperometry (CA) were carried out to evaluate the response characteristics of the solution under different pHs. Electrochemical impedance spectroscopy (EIS) was carried out to determine the interfacial parameters ruling the pH sensing mechanism for different electrode configurations. The studies revealed that the carbon-based electrodes exhibit stable behavior, with a sensitivity of 17.8 nA·cm⁻²/pH and a linear correlation (r² = 0.996) across a range of acidic to basic conditions, thereby enhancing the sensor’s performance. The carbon electrodes demonstrated superior sensing properties, attributed to their improved stability and conductivity. This advancement in sensor technology offers promising potential for applications requiring reliable and precise measurements.

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丝网印刷银电极和碳电极上掺氮氧化锌 pH 传感性能的比较分析

本文对碳丝网印刷电极（N-ZnO/C）和银丝网印刷电极（N-ZnO/Ag）上的 N-ZnO 的电化学 pH 传感特性进行了比较研究。使用扫描电子显微镜评估了薄膜的表面形态特性。电化学评估是在生理液体（如氯化钠和氯化钾）中存在常见盐类的情况下进行的。采用循环伏安法（CV）和计时电流法（CA）评估了溶液在不同 pH 值下的响应特性。此外，还进行了电化学阻抗谱（EIS）分析，以确定不同电极配置的 pH 值传感机制的界面参数。研究结果表明，碳基电极表现稳定，灵敏度为 17.8 nA-cm-2/pH，在从酸性到碱性的一系列条件下均呈线性相关（r2 = 0.996），从而提高了传感器的性能。碳电极显示出卓越的传感性能，这要归功于其更高的稳定性和导电性。传感器技术的这一进步为需要可靠和精确测量的应用提供了广阔的前景。

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.