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SnO₂纳米棒的乙醇气体敏感特性研究

Study on gas sensing property of C₂H₅OH based SnO₂ nanorods

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【Author】 ZHAO He-yun~(1,2),LI Yue-hua~3,YANG Liu-fang~2,LIU Qing-ju~2,WU Xing-hui~2 (1.Faculty of Materials and Metallurgy Engineering,Kunming University of Science and Technology,Kunming 650093,China;2.Department of Materials Science and Engineering,Yunnan University,Kunming 650091,China;3.School of Life Science and Chemistry,Dali University,Dali 671200,China)

【机构】昆明理工大学材料与冶金工程学院；大理学院生命科学与化学院；云南大学材料科学与工程系；云南大学材料科学与工程系云南昆明650093；云南昆明650091；云南大理671200；

【摘要】在NaC l+KC l熔盐介质中,在660℃下对利用微乳技术制备的前驱物进行焙烧,成功合成了SnO2纳米棒。利用TEM,XRD对SnO2纳米棒形貌、成分进行了表征和分析,SnO2纳米棒直径为10~20 nm,长度从几百个纳米到几个微米。研究表明:以SnO2纳米棒为原料制备的厚膜气敏元件,对乙醇具有较高的灵敏度、好的选择性和响应-恢复特性。更多还原

【Abstract】 SnO₂ nanorods are prepared by calcinedating precursor powders at 660 ℃ in molten salt medium of NaCl+KCl.The structure and morphology of SnO₂ nanorods is investigated by powder（X-ray） diffraction（XRD）and transmission electron microscopy（TEM）.The diameter of SnO₂ nanorods from 10 nanometre to 20 nanometre,length is from several hundreds nanometre to several micron.The gas property of SnO₂ nanorods is studies.The investigation demonstrates that the sensor based on SnO₂ nanorods has higher sensitivity,higher selectivity and better response and reversion character.更多还原