Porous Hierarchical In2O3 Micro-/Nanostructures: Preparation, Formation Mechanism, and Their Application in Gas Sensors for Noxious Volatile Organic Compound Detection
Porous Hierarchical In2O3 Micro-/Nanostructures: Preparation, Formation Mechanism, and Their Application in Gas Sensors for Noxious Volatile Organic Compound Detection
复制标题
多孔分级In2O3微/纳米结构：制备、形成机制及其在有毒挥发性有机化合物检测气体传感器中的应用
DOI：
10.1021/jp911768m
复制
发表时间：
2010-03-25
影响因子：
3.7
通讯作者：
Liu, Jinhuai
中科院分区：
文献类型：
--
作者：
Liu, Jinyun;Luo, Tao;Liu, Jinhuai
通过氧化In 2S 3前驱体制备了多孔分级In 2 O3微/纳米结构气敏元件。通过热重-差热分析、X射线衍射、能谱分析和场发射扫描电镜等手段对多孔结构的形成机理进行了系统的研究。在以有毒挥发性有机化合物为目标气体的气敏测量中，基于多孔分级结构In 2 O3微/纳米结构的气敏元件表现出灵敏的性能和较大的检测浓度范围。此外，所制备的气体传感器也表现出对每种目标气体的显著选择性。多孔分级In 2 O3微/纳米结构气体传感器的灵敏度和选择性使其能够潜在地应用于对有毒挥发性有机化合物的环境监测。此外，还对该传感器的气敏机理进行了探讨。
A porous hierarchical In2O3 micro-/nanostructure was prepared by oxidizing In2S3 precursors for gas sensor applications. The formation mechanism of the porous structure was investigated systemically by means of simultaneous thermogravimetry and differential thermal analysis, conventional X-ray diffraction, and energy-dispersive XRD cooperated with field-emission scanning electronic microscopy observations. In gas-sensing measurements with noxious volatile organic compounds as target gases, the gas sensor based on porous hierarchical In2O3 micro-/nanostructures showed a sensitive performance with a large detecting concentration range. Besides, the as-fabricated gas sensor also exhibited significant selectivity toward each target gas. Both the sensitivity and the selectivity of the porous hierarchical In2O3 micro-/nanostructure-based gas sensor enable it to be potentially applied for environmental monitoring toward noxious volatile organic compounds. Furthermore, the gas-sensing mechanism was also demonstra...