Highly selective ethanol vapour sensing materials for a new generation of gas sensors based on molecularly imprinted polymers.

IF 5.6 1区化学 Q1 CHEMISTRY, ANALYTICAL

Talanta Pub Date : 2025-01-01 Epub Date: 2024-09-18 DOI:10.1016/j.talanta.2024.126902

Todd Cowen, Sotirios Grammatikos, Michael Cheffena

引用次数: 0

Abstract

A simple gas sensor consisting of a molecularly imprinted polymer-carbon nanotube composite cast onto a screen-printed electrode has been developed with extremely high selectivity for ethanol vapour over methanol vapour. Ethanol gas sensors typically display selectivity for ethanol over methanol in the range 2-4 times, while the mean ratio of ethanol to methanol response observed with the described device was 672. This selectivity was achieved under ambient conditions. Additionally, the molecularly imprinted polymer was produced using reagents previously applied in the development of a device selective for methanol, with only the template being changed. This demonstrates the versatility of molecular imprinting and provides a foundation for their greater integration into future gas sensors.

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基于分子印迹聚合物的新一代气体传感器的高选择性乙醇蒸汽传感材料。

我们开发出了一种简单的气体传感器，由分子印迹聚合物-碳纳米管复合材料浇铸在丝网印刷电极上组成，对乙醇蒸气的选择性极高。乙醇气体传感器对乙醇和甲醇的选择性通常在 2-4 倍之间，而使用所述装置观察到的乙醇和甲醇反应的平均比率为 672。这种选择性是在环境条件下实现的。此外，分子印迹聚合物是利用以前用于开发甲醇选择性装置的试剂生产的，只改变了模板。这证明了分子印迹技术的多功能性，并为其进一步融入未来的气体传感器奠定了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Talanta 化学-分析化学

CiteScore

12.30

自引率

4.90%

发文量

861

审稿时长

29 days

期刊介绍： Talanta provides a forum for the publication of original research papers, short communications, and critical reviews in all branches of pure and applied analytical chemistry. Papers are evaluated based on established guidelines, including the fundamental nature of the study, scientific novelty, substantial improvement or advantage over existing technology or methods, and demonstrated analytical applicability. Original research papers on fundamental studies, and on novel sensor and instrumentation developments, are encouraged. Novel or improved applications in areas such as clinical and biological chemistry, environmental analysis, geochemistry, materials science and engineering, and analytical platforms for omics development are welcome. Analytical performance of methods should be determined, including interference and matrix effects, and methods should be validated by comparison with a standard method, or analysis of a certified reference material. Simple spiking recoveries may not be sufficient. The developed method should especially comprise information on selectivity, sensitivity, detection limits, accuracy, and reliability. However, applying official validation or robustness studies to a routine method or technique does not necessarily constitute novelty. Proper statistical treatment of the data should be provided. Relevant literature should be cited, including related publications by the authors, and authors should discuss how their proposed methodology compares with previously reported methods.