Recent advances in engineering 2D transition metal dichalcogenides for high-performance gas sensing

IF 4.9 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-10-23 DOI:10.1016/j.sna.2025.117195

Jian Hou , Chang Hyun Lee , Sunghoon Park , Hyojung Kim , Muhammad Hilal , Zhicheng Cai

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引用次数: 0

Abstract

Two-dimensional (2D) transition metal dichalcogenides (TMDs) have emerged as promising materials for gas sensing due to their atomic thickness, high surface to volume ratio, and tunable electronic structure. This review surveys recent advances in TMD based gas sensors, with emphasis on synthesis routes such as chemical vapor deposition, liquid phase exfoliation, mechanical exfoliation, and plasma assisted functionalization, and explains how these processes control defect density and distribution, drive phase transformations, and tailor surface chemistry. We evaluate the sensing performance of key TMDs such as MoS₂, WS₂, MoSe₂, WSe₂ and metallic-phase/Janus variants, analyzing mechanisms such as charge-transfer, defect-mediated adsorption, and photoactivation. We focus on engineering strategies that raise sensitivity to ppb levels and sharpen selectivity. We also prioritize faster response and recovery and reliable operation at ambient temperature. The review also discusses scalable integration approaches, including thin-film and heterostructured sensor architectures, as well as implementation in flow-through reactors, wearable platforms, and IoT systems. This review integrates material design, performance metrics, and system-level engineering to outline a roadmap toward commercially viable, high performance TMD gas sensors.

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用于高性能气体传感的二维过渡金属二硫族化合物的工程研究进展

二维（2D）过渡金属二硫化物（TMDs）由于其原子厚度、高表面体积比和可调谐的电子结构而成为气敏材料。本文综述了基于TMD的气体传感器的最新进展，重点介绍了化学气相沉积、液相剥离、机械剥离和等离子体辅助功能化等合成途径，并解释了这些工艺如何控制缺陷密度和分布、驱动相变和定制表面化学。我们评估了关键的TMDs，如MoS 2， WS 2, MoSe 2， WSe 2和金属相/Janus变体的传感性能，分析了电荷转移，缺陷介导的吸附和光活化等机制。我们专注于提高对ppb水平的敏感性和提高选择性的工程策略。我们还优先考虑更快的响应和恢复以及在环境温度下的可靠运行。该综述还讨论了可扩展的集成方法，包括薄膜和异质结构传感器架构，以及在流过反应器、可穿戴平台和物联网系统中的实现。该综述整合了材料设计、性能指标和系统级工程，勾勒出商业上可行的高性能TMD气体传感器的路线图。

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

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...