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气敏传感器在工农业生产、环境监测、医疗诊断和国防军事等领域有广泛的应用,而气敏材料被视为发展先进气敏传感器的关键.有序介孔金属氧化物是一类非常有应用潜力的气敏材料,首先其规则的多孔结构和大的比表面积特性,能有效地促进气体分子的传输扩散,并为气体分子与材料表面发生化学相互作用提供更多的反应活性位;更为重要的是其孔壁厚度处于纳米尺度范围,导致介孔金属氧化物中相当大比例载流子的传输受表面化学相互作用影响,因此对气体
Gas sensors are widely used in industrial and agricultural production, environmental monitoring, medical diagnosis and national defense and military fields, while gas-sensitive materials are regarded as the key to the development of advanced gas sensors. Ordered mesoporous metal oxides are a very important The potential applications of gas-sensitive materials, first of all, their regular porous structure and large specific surface area, can effectively promote the diffusion of gas molecules and provide more reactive sites for gas molecules to interact with the surface of the material. It is important that the pore wall thickness is in the nanoscale range, resulting in the transport of a substantial proportion of the carriers in the mesoporous metal oxide that is affected by the surface chemical interactions,