聚苯胺修饰磷钨酸/铜复合材料选择性l -抗坏血酸检测的电活性柔性传感器

IF 2.2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Sajina Selvaraj;Archana S;Ragupathy D;Vinoth Kumar Ponnusamy;Muthusankar Eswaran
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引用次数: 0

摘要

在这篇文章中,我们研究了一种基于柔性不锈钢(FSS)的磷钨酸-铜嵌入聚苯胺(FSS/PANI/PTA/Cu)复合材料的高效检测l -抗坏血酸(AA)的杂化电极。利用循环伏安法(CV)在FSS上进行单锅电沉积制备聚苯胺/PTA/Cu复合材料。通过x射线晶体学、场发射扫描电镜、红外光谱和紫外可见分光光度计对其结构几何、表面形貌和分子振动特性进行了物理化学表征,验证了复合材料的成功制备。利用CV和时安培分析对其电化学传感性能进行了测试。柔性传感器的灵敏度为3.79 mA/mM,对AA的检测限为7.9µM。这种性能源于聚苯胺、PTA和Cu的联合协同作用,使高效的离子扩散和通过高密度可达电活性位点的无缝电子转移成为可能。此外,柔性传感器电极对AA具有显著的选择性,可忽略共存物种的干扰,突出了其在不久的将来的医疗诊断应用潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electroactive Flexible Sensor for Selective L-Ascorbic Acid Detection Using Polyaniline-Decorated Phosphotungstic Acid/Copper Composite
In this letter, we spotlight a flexible stainless steel (FSS)-based hybrid electrode with phosphotungstic acid-copper-embedded poly (aniline) (FSS/PANI/PTA/Cu) composite for the efficient detection of L-ascorbic acid (AA). Single pot electrodeposition has been engaged in fabricating PANI/PTA/Cu composite on FSS via cyclic voltammetry (CV). The successful composite fabrication has been authenticated through physicochemical characterization, including its structural geometry, surface morphology, and molecular vibrational properties, which were analyzed through X-ray crystallography, field emission scanning electron microscopy, infrared spectroscopy and UV-Vis spectrophotometers. The electrochemical sensing performances were examined using CV and chronoamperometric analysis. The flexible sensor measured a sensitivity of 3.79 mA/mM with a detection limit of 7.9 µM for AA. This performance results from the combined synergetic action of PANI, PTA, and Cu, which enabled efficient ionic diffusion and seamless electron transfer through a high density of accessible electroactive sites. In addition, the flexible sensor electrode exhibited remarkable selectivity for AA, with negligible interference from coexisting species, highlighting its potential for healthcare diagnostic applications in near future.
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来源期刊
IEEE Sensors Letters
IEEE Sensors Letters Engineering-Electrical and Electronic Engineering
CiteScore
3.50
自引率
7.10%
发文量
194
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