Room temperature gas sensors for NH3 detection based on the heterojunction of 2D Ti3C2Tx MXenes and Bi2S3

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL Microchimica Acta Pub Date : 2024-10-22 DOI:10.1007/s00604-024-06750-1

Zhihua Zhao, Zijie Su, Zhenli Lv, Pu Shi, Guixin Jin, Lan Wu

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Abstract

Bi₂S₃/Ti₃C₂T_x nanomaterials were successfully prepared through a simple hydrothermal method. Various methods were used for their characterization, including XRD, XPS, SEM, EDS, and BET, along with testing their gas-sensing properties. The results showed that the response value to 100 ppm ammonia at room temperature reached 107%, which was 14.1 times higher than that of pure few-layer MXene. After undergoing anti-humidity interference testing, we observed that Bi₂S₃/Ti₃C₂T_x exhibited a higher response value in real-time monitoring of ammonia as humidity increased. Specifically, under 90% humidity conditions, its response value reached 1.32 times that of normal humidity conditions. This exceptional moisture resistance ensures that the sensor can maintain stability, and even exhibit superior performance, in harsh environments. Therefore, it possesses excellent selectivity, high-moisture-resistance, and long-term stability, making it significant in the field of medical and health monitoring.

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基于二维 Ti3C2Tx MXenes 和 Bi2S3 异质结的用于检测 NH3 的室温气体传感器

通过简单的水热法成功制备了 Bi2S3/Ti3C2Tx 纳米材料。研究人员采用了多种方法对其进行表征，包括 XRD、XPS、SEM、EDS 和 BET，并测试了其气体传感性能。结果表明，在室温下对 100 ppm 氨气的响应值达到 107%，是纯少层 MXene 的 14.1 倍。在进行抗湿度干扰测试后，我们发现随着湿度的增加，Bi2S3/Ti3C2Tx 在实时监测氨气方面表现出更高的响应值。具体来说，在 90% 的湿度条件下，其响应值达到了正常湿度条件下的 1.32 倍。这种出色的防潮性能确保了传感器在恶劣环境中也能保持稳定，甚至表现出卓越的性能。因此，它具有出色的选择性、高防潮性和长期稳定性，在医疗和健康监测领域具有重要意义。图文摘要

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来源期刊

Microchimica Acta 化学-分析化学

CiteScore

9.80

自引率

5.30%

发文量

410

审稿时长

2.7 months

期刊介绍： As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.