Strategy and Future Prospects to Develop Room-Temperature-Recoverable NO(2) Gas Sensor Based on Two-Dimensional Molybdenum Disulfide.
Strategy and Future Prospects to Develop Room-Temperature-Recoverable NO(2) Gas Sensor Based on Two-Dimensional Molybdenum Disulfide.
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DOI：
10.1007/s40820-020-00558-3
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发表时间：
2021-01
影响因子：
26.6
通讯作者：
Kumar M
中科院分区：
文献类型：
--
作者：
Agrawal AV;Kumar N;Kumar M
MoS_2具有较高的比表面积、对气体分子的位置依赖性吸附和易于控制的形貌，在气敏方面显示出巨大的潜力。介绍了基于MoS_2的NO2化学电阻传感器的最新实验和理论策略。从器件、结构、形貌、缺陷、异质结构、金属掺杂和光照条件等方面对MoS_2化学电阻传感器的制备进行了详细的综述。二氧化氮(NO2)是一种酸性有害气体，由于人类活动的影响，大气中不断释放出二氧化氮。基于传统材料的NO2传感器存在温度要求高、恢复慢、在恶劣环境条件下性能退化等局限性。传统材料的这些局限性迫使科学界发现未来对NO2敏感的替代材料。二硫化钼(MoS_2)已成为开发新一代NO2气体传感器的潜在候选材料。MoS2对NO2分子的吸附比表面积大，形貌可控，易于与其他材料集成，与物联网(IoT)设备兼容。本文从器件(电阻和晶体管)、层厚度、形貌控制、缺陷剪裁、异质结构、金属纳米颗粒掺杂和光照射等方面对MoS2化学电阻传感器的制备进行了详细的综述。此外，还对设计MoS_2基NO2传感器所涉及的实验和理论方面进行了广泛的讨论。最后，总结了进一步提高MoS2气敏性能所面临的挑战和未来的展望。了解和解决这些问题有望产生用于环境监测的高度可靠和符合行业标准的耐化学性NO2气体传感器的开发。
MoS2 shows enormous potential for gas sensing due to its high surface to volume ratio, position-dependent gas molecules adsorption and easy control on morphology. The recent experimental and theoretical strategies to develop NO2 chemiresistance sensors based on MoS2 are addressed. A detailed overview of the fabrication of MoS2 chemiresistance sensors in terms of devices, structure, morphology, defects, heterostructures, metal doping, and under light illumination are discussed. Nitrogen dioxide (NO2), a hazardous gas with acidic nature, is continuously being liberated in the atmosphere due to human activity. The NO2 sensors based on traditional materials have limitations of high-temperature requirements, slow recovery, and performance degradation under harsh environmental conditions. These limitations of traditional materials are forcing the scientific community to discover future alternative NO2 sensitive materials. Molybdenum disulfide (MoS2) has emerged as a potential candidate for developing next-generation NO2 gas sensors. MoS2 has a large surface area for NO2 molecules adsorption with controllable morphologies, facile integration with other materials and compatibility with internet of things (IoT) devices. The aim of this review is to provide a detailed overview of the fabrication of MoS2 chemiresistance sensors in terms of devices (resistor and transistor), layer thickness, morphology control, defect tailoring, heterostructure, metal nanoparticle doping, and through light illumination. Moreover, the experimental and theoretical aspects used in designing MoS2-based NO2 sensors are also discussed extensively. Finally, the review concludes the challenges and future perspectives to further enhance the gas-sensing performance of MoS2. Understanding and addressing these issues are expected to yield the development of highly reliable and industry standard chemiresistance NO2 gas sensors for environmental monitoring.