【摘要】 三氧化钨（WO₃）因其氧含量与氧缺陷随着环境因素变化而变化,使得其成为一种理想的二氧化氮（NO₂）气敏材料。简要介绍了WO₃材料的结构、特性和NO₂气敏机理,综述了近5年来高性能WO₃气敏材料在NO₂气体检测中的最新研究进展,分析了WO₃气敏材料存在的主要问题与挑战,重点讨论高比表面积WO₃材料、WO₃复合材料等的解决途径。最后,展望了WO₃气敏材料在NO₂气敏传感器中的发展方向和应用前景,提出了开发低电阻WO₃膜电极是未来高性能NO₂传感器的研究重点。更多还原

【Abstract】 Tungsten trioxide（WO₃）is a kind of ideal gas-sensing material towards nitrogen dioxide（NO₂）gas because its oxygen contents and oxygen defects can change along with environment.The structure,performance characteristics and gas-sensing mechanism towards NO₂ gas of WO₃ materials are simply introduced.Research progresses on high-performance WO₃gas-sensing materials towards NO₂ gas detection are reviewed in recent five years.The main problems and challenges of WO₃gas-sensing material are analyzed.The solution,especially WO₃nano-materials with high specific surface area and WO₃ composites,is emphasized.Finally,the development direction and application prospects of WO₃gas-sensing material are summarized in the future.A favorable focus on developing WO₃ electrode with low resistance is proposed.更多还原