摘要
气敏传感器已在生物、化学、航空、军事等领域获得了广泛的应用。鉴于WO3基气敏传感器是检测H2S、NOx、O3和NH3等气体最有前景的新型氧化物气敏传感器之一,本文以不同的敏感气体为分类依据系统阐述了近年来WO3基气敏传感器的研究进展,详细探讨了制备方法及贵金属掺杂对上述各种气体气敏性能的影响,阐述了WO3基气敏传感器的气敏机理,并指出了目前WO3基气敏传感器在研究过程中存在的问题。
Gas sensors have been extensively developed in biology, chemistry, aeronautics, military affairs. WO3- based gas sensors have been characterized as one of the most promising neotype oxide gas sensors for the detection of H2S, NOx, O3, NH3 and so on. An overview clarified by different sensing gases of the progress in WO3-based gas sensors has been presented systematically. Effects of preparation methods and noble metal dopants on gas sensing properties have been discussed in detail. Gas sensing mechanism of WO3 gas sensor has been discussed in this paper. Finally, the problems existed during the research process of WO3-based gas sensors have been pointed out.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2009年第12期2734-2743,共10页
Progress in Chemistry
基金
国家重点基础研究发展计划(973)项目(No.2007CB936601)
国家自然科学基金项目(No.50872064)
中科院知识创新工程重要方向项目(No.KGCX2-YW-341)资助
关键词
WO3
气敏传感器
气敏性能
气敏机理
WO3
gas sensors
gas sensing properties
gas sensing mechanism
