基于炭黑/聚苯胺纳米复合材料的全印刷pH传感器

Shirin Mahinnezhad, H. Emami, Mohsen Ketabi, A. A. Shboul, Najet Belkhamssa, Andy Shih, R. Izquierdo
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引用次数: 1

摘要

本文以炭黑(CB)浆料/聚苯胺祖母绿盐(PANI-ES)纳米复合材料为工作电极,Ag/AgCl为准参比电极,设计并制备了一种全丝网印刷柔性电位传感器。与聚苯胺电化学聚合沉积方法不同,聚苯胺- es与商用CB膏体混合用于丝网印刷,实现了完全印刷和可扩展的工艺。因此,99.1% CB和0.9% PANI-ES的纳米复合材料是一种很有前途的高性能pH传感器的候选纳米复合材料。该传感器的灵敏度为50 mV/pH,室温下的响应时间为15 s,在3 ~ 11的pH范围内具有良好的线性,具有可逆的pH传感性能。感应机制主要取决于PANI-ES在不同pH水平下氧化态转变的程度。所提出的柔性pH传感器可用于监测患者的健康和水质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fully Printed pH Sensor Based in Carbon Black/Polyaniline Nanocomposite
In this work, a fully screen-printed and flexible potentiometric pH sensor was designed and fabricated by incorporating a carbon black (CB) paste/polyaniline emeraldine salt (PANI-ES) nanocomposite as the working electrode and Ag/AgCl as the quasi-reference electrode. Rather than the PANI electrochemical polymerization deposition method, the PANI-ES was blended with a commercial CB paste for screen-printing, enabling a fully printed and scalable process. As a result, a nanocomposite mixture of 99.1% CB and 0.9% PANI-ES emerged as a promising nanocomposite candidate to develop high-performance pH sensors. The sensor exhibited a near Nernstian sensitivity of 50 mV/pH, response time of 15 s at room temperature, high linearity in the pH range between 3 and 11 and reversible pH sensing performance. The sensing mechanism depends mainly on the degree of the oxidation states transition of PANI-ES at different pH levels. The proposed flexible pH sensor can be used to monitor a patient’s health and water quality.
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