Tailoring ultra-flexibility in eco-friendly conductive filaments: The use of polypropylene in the development of a 3D-printed carbon black-based electrochemical sensor

IF 4.1 3区化学 Q1 CHEMISTRY, ANALYTICAL

Journal of Electroanalytical Chemistry Pub Date : 2025-08-29 DOI:10.1016/j.jelechem.2025.119439

Lucas V. Bertolim , Luiz R.G. Silva , Jéssica Santos Stefano , Bruno C. Janegitz

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引用次数: 0

Abstract

This work presents a new approach for manufacturing flexible conductive filaments using carbon black nanoparticles, polypropylene, and polylactic acid (CB-PP-PLA) to develop ready-to-use 3D printed electrochemical sensors. The filament composition is ideal for producing ultra-flexible filaments due to the presence of polypropylene, eliminating the need for a plasticizer, which allows for easier and more robust sensor printing. The filament manufacturing route is simple and accessible, without the need for solvents or expensive equipment, and can be replicated in laboratories and places with less infrastructure. As a proof of concept, 3D-printed electrochemical sensors derived from the newly developed filament were used to detect quercetin (QCT) in honey samples. The produced conductive CB-PP-PLA filaments and electrodes underwent comprehensive characterization through various morphological, spectroscopic, thermoanalytical, and electrochemical methods. The sensor exhibited a robust response to QCT, demonstrating a linear range of 2.0–80.0 μmol L⁻¹ and a detection limit of 056 μmol L⁻¹. Furthermore, the new method is eco-friendly, with low cost, and it displayed recovery values close to 100 % in analyses of fortified honey samples, indicating the absence of matrix effects.

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在环保导电丝中剪裁超柔韧性：在3d打印碳黑基电化学传感器的开发中使用聚丙烯

这项工作提出了一种利用炭黑纳米颗粒、聚丙烯和聚乳酸（CB-PP-PLA）制造柔性导电细丝的新方法，以开发即用型3D打印电化学传感器。由于聚丙烯的存在，长丝成分是生产超柔性长丝的理想选择，消除了对增塑剂的需求，这使得传感器打印更容易，更坚固。长丝制造路线简单易行，不需要溶剂或昂贵的设备，可以在实验室和基础设施较少的地方复制。作为概念验证，由新开发的灯丝衍生的3d打印电化学传感器用于检测蜂蜜样品中的槲皮素（QCT）。制备的导电CB-PP-PLA丝和电极通过各种形态、光谱、热分析和电化学方法进行了全面的表征。该传感器对QCT具有良好的响应，线性范围为2.0 ~ 80.0 μmol L−1，检出限为056 μmol L−1。此外，新方法生态友好，成本低，并且在分析强化蜂蜜样品中显示出接近100%的回收率，表明没有基质效应。

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来源期刊

Journal of Electroanalytical Chemistry 化学-电化学

CiteScore

7.80

自引率

6.70%

发文量

912

审稿时长

2.4 months

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.