| 基于金属有机骨架材料的电阻传感器在检测VOCs中的应用 |
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| 作者姓名： | 牛犇 张秀玲 翟振宇 郝肖柯 李从举 |
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| 作者单位： | 1.北京高校节能与环保工程研究中心, 北京 100083 |
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| 基金项目： | 国家自然科学基金资助项目（51973015，52170019）；中央高校基本科研业务费专项资金资助项目（06500100，0612062）；中国博士后科学基金资助项目（2019M660019）；北京市自然科学基金资助项目（2202029） |
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| 摘 要： | 化学电阻传感器由于其结构简单、分析快速等特点在众多气体传感方式中脱颖而出，因此成为了目前应用广泛的传感器类型。其中，用于检测挥发性有机化合物（VOCs）的电阻传感器中敏感材料对气体的选择性吸附和相应的检测至关重要，此外也需要一些额外措施保证检测的选择性。因此，传感材料的比表面积、孔尺寸、功能官能团以及辅助材料等决定了传感器的响应程度、选择和敏感程度。金属有机框架材料（MOF）是一类新型的有机?无机杂化材料，具有丰富多孔、高比表面积、结构多样性、化学稳定性良好等特点，除此以外一些MOF衍生物也具有比表面积大、导电性良好等特点，因此MOF及MOF衍生物已在气体传感器中得到广泛研究和应用。基于化学电阻传感器基本原理、MOF及MOF衍生物在电阻传感器检测挥发性有机化合物中起到的作用、原理、及其应用，对其发展前景和面临的挑战进行了展望。
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| 关 键 词： | 金属有机框架 衍生物 吸附介质 挥发性有机化合物 电阻传感器 |
| 收稿时间： | 2021-03-26 |
Application of chemiresistive sensors based on the metal-organic framework for detecting volatile organic compounds |
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| Affiliation: | 1.Beijing Higher Institution Engineering Research Center of Energy Conservation and Environmental Protection, Beijing 100083, China2.School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Chemical resistance sensors stand out among many gas sensing methods because of their simple structure, low-cost fabrication, facile integration with various electronic devices, and quick analysis; therefore, presently, they are widely used for gas sensing. Chemical resistance sensing is achieved by changing the electronic distribution of the sensing material. Among these chemical resistance sensors, the selective adsorption of gases and the corresponding detection of sensitive materials in the resistance sensor used for detecting volatile organic compounds (VOCs) are very important. In addition, measures to ensure the selectivity of detection are necessary. Therefore, the specific surface area, pore size and functional groups of sensing materials, and some auxiliary materials determine the response and sensitivity of the sensor. Metal-organic framework materials (MOFs) are a new class of organic-inorganic hybrid materials. It is characterized by rich porosity, high specific surface area, structural diversity, and chemical stability, making it exhibit good potential in the gas storage and separation field, catalysis field, and chemical sensing field. Some MOF derivatives, in addition to their properties, such as good electrical conductivity, have characteristics of MOF, such as high specific surface area. Therefore, MOF and its derivatives have been widely studied and applied as sensitive materials and filter media in gas sensors. Some MOF and MOF derivatives can be used as sensitive materials for chemical resistance sensors to improve the response to VOCs, and MOF membranes can also be used for their selective adsorption as a filter layer to improve the selectivity of sensors to the target gas. In this paper, the basic principle of chemical resistance sensors, the role, principle, and application of MOF and MOF derivatives in the detection of volatile organic compounds by resistance sensors are summarized, and the development prospect and challenges are discussed. |
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