Jo Young-Moo, Jo Yong Kun, Lee Jong-Heun, Jang Ho Won, Hwang In-Sung, Yoo Do Joon
Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea.
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA.
Adv Mater. 2023 Oct;35(43):e2206842. doi: 10.1002/adma.202206842. Epub 2023 Mar 8.
The sensing performances of gas sensors must be improved and diversified to enhance quality of life by ensuring health, safety, and convenience. Metal-organic frameworks (MOFs), which exhibit an extremely high surface area, abundant porosity, and unique surface chemistry, provide a promising framework for facilitating gas-sensor innovations. Enhanced understanding of conduction mechanisms of MOFs has facilitated their use as gas-sensing materials, and various types of MOFs have been developed by examining the compositional and morphological dependences and implementing catalyst incorporation and light activation. Owing to their inherent separation and absorption properties and catalytic activity, MOFs are applied as molecular sieves, absorptive filtering layers, and heterogeneous catalysts. In addition, oxide- or carbon-based sensing materials with complex structures or catalytic composites can be derived by the appropriate post-treatment of MOFs. This review discusses the effective techniques to design optimal MOFs, in terms of computational screening and synthesis methods. Moreover, the mechanisms through which the distinctive functionalities of MOFs as sensing materials, heterostructures, and derivatives can be incorporated in gas-sensor applications are presented.
为了通过确保健康、安全和便利来提高生活质量，气体传感器的传感性能必须得到改善和多样化。金属有机框架（MOF）具有极高的表面积、丰富的孔隙率和独特的表面化学性质，为推动气体传感器创新提供了一个有前景的框架。对MOF传导机制的深入理解促进了它们作为气体传感材料的应用，并且通过研究组成和形态依赖性以及实施催化剂掺入和光活化，已经开发出了各种类型的MOF。由于其固有的分离、吸收特性和催化活性，MOF被用作分子筛、吸收过滤层和多相催化剂。此外，通过对MOF进行适当的后处理，可以得到具有复杂结构的氧化物或碳基传感材料或催化复合材料。本文综述了在计算筛选和合成方法方面设计最佳MOF的有效技术。此外，还介绍了MOF作为传感材料、异质结构和衍生物的独特功能可纳入气体传感器应用的机制。
