Porous cobalt oxide nanowires: Notable improved gas sensing performances  

作　　者：MA MaiXia PAN ZhiYun GUO Lin LI JingHong WU ZiYu YANG ShiHe 

机构地区：[1]School of Chemistry and Environment,Beijing University of Aeronautics andAstronautics,Beijing 100191,China [2]National Synchrotron Radiation Facility,University of Science and Technology of China,He.fei 230026,China [3]Department of Chemistry,Beijing Key Laboratory for Microanalytical Methods and Instrumentation,Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology,Tsinghua University,Beijing 100084,China [4]Department of Chemistry,the Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong,China [5]Faculty of Chemistry and Material Science,Langfang Teachers College,Langfang 065000,China

出　　处：《Chinese Science Bulletin》2012年第31期4019-4023,共5页

基　　金：supported by the National Natural Science Foundation of China (11079002,20973019);Specialized Research Fund for the Doctoral Program of Higher Education (20091102110035)

摘　　要：The porous Co3O4 nanowires have been successfully synthesized via modified template method. A possible growth mechanism governing the formation of such 1D nanowires is proposed. The as-prepared products have been characterized by X-ray Powder Diffraction (XRD), Extended X-ray Absorption Fine-structure (EXAFS), High-resolution Transmission Electron Microscopy (HRTEM) and N2 adsorption/desorption analysis. Our systematic studies have revealed that the porous Co3O4 nanowires show excellent gas sensing performances, which demonstrate the potential application of the 1D nanostructured Co3O4 in the detection of the ethanol gas as a sensor material. The improved performances are owing to its large specific surface area and porous morphology.The porous CO304 nanowires have been successfully synthesized via modified template method. A possible growth mechanism governing the formation of such 1D nanowires is proposed. The as-prepared products have been characterized by X-ray Powder Diffraction （XRD）, Extended X-ray Absorption Fine-structure （EXAFS）, High-resolution Transmission Electron Microscopy （HRTEM） and N2 adsorption/desorption analysis. Our systematic studies have revealed that the porous CO304 nanowires show excellent gas sensing performances, which demonstrate the potential application of the 1D nanostructured Co304 in the detection of the ethanol gas as a sensor material. The improved performances are owing to its large specific surface area and porous morphology.

关 键 词：纳米线 多孔 性能 气体 钴氧化物 扩展X射线吸收精细结构 高分辨透射电子显微镜 X射线粉末衍射 

分 类 号：TB383.1[一般工业技术—材料科学与工程]