用于H2S检测的TiN-WN双相电化学传感器的设计。

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science Pub Date : 2024-11-30 DOI:10.1016/j.jcis.2024.11.228

Zhaorui Zhang , Jing Yang , Chonghui Zhu , Mengmeng Xu , Xiaohui Yan , Jinkui Chu , Xinjiang Zhu , Minghui Yang

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引用次数: 0

摘要

电极材料是基于燃料电池的气体传感器的关键，但传统的基于pt的催化剂在电子结构和稳定性方面经常受到限制，限制了H2S检测的实际应用。在这里，我们介绍了一种由氮化钛-钨（TiN-WN）复合材料支撑的Pt催化剂，用于电化学H2S传感器。利用Pt/TiN-WN复合材料的多层电子转移，该传感器在Pt表面实现了电子积累，从而提高了电导率和丰富的活性位点，具有高H2S灵敏度。它的响应电流为12.2µa，是Pt/C（7.1µa）的1.7倍，具有良好的线性度（R2 = 0.999）、反复测试的稳定性和强大的抗干扰能力。这些发现标志着H2S传感技术的重大进步，为实时监测提供了可靠的解决方案，并解决了当前系统的主要局限性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Design of a Dual-Phase TiN-WN electrochemical sensor for H2S detection

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Design of a Dual-Phase TiN-WN electrochemical sensor for H2S detection

Electrode materials are pivotal in fuel cell-based gas sensors, yet conventional Pt-based catalysts often suffer from limitations in electronic structure and stability, restricting the practical application of H₂S detection. Here, we introduce a Pt catalyst supported by a titanium-tungsten nitride (TiN-WN) composite for an electrochemical H₂S sensor. Leveraging the multilevel electron transfer of the Pt/TiN-WN composite, this sensor achieves electron accumulation on the Pt surface, yielding enhanced conductivity and abundant active sites for high H₂S sensitivity. It achieves a response current of 12.2 µA, 1.7 times that of Pt/C (7.1 µA), and demonstrates excellent linearity (R² = 0.999), stability over repeated tests, and robust anti-interference capability. These findings mark a significant advancement in H₂S sensing, offering a reliable solution for real-time monitoring and addressing key limitations of current systems.

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来源期刊

Journal of Colloid and Interface Science 化学-物理化学

CiteScore

16.10

自引率

7.10%

发文量

2568

审稿时长

2 months

期刊介绍： The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality. Emphasis: The journal emphasizes fundamental scientific innovation within the following categories: A.Colloidal Materials and Nanomaterials B.Soft Colloidal and Self-Assembly Systems C.Adsorption, Catalysis, and Electrochemistry D.Interfacial Processes, Capillarity, and Wetting E.Biomaterials and Nanomedicine F.Energy Conversion and Storage, and Environmental Technologies