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Hydrothermal Synthesis and Gas Sensitivity Study of SnO2 Nanocrystallites
Chen Youcun*,Zhang Yuanguang
Author NameAffiliationE-mail
Chen Youcun* Department of Chemistry, Anqing Normal College, Anqing 246011 huaxue@aqtc.edu.cn 
Zhang Yuanguang Department of Chemistry, Anqing Normal College, Anqing 246011  
Abstract:
SnO2 nanocrystal with different crystalline sizes were prepared with SnCl2 2H2O and H2O2 raw materials by a hydrothermal process. The synthesized powders at different reaction temperatures were characterized by means of powder X-ray diffraction, transmission electron microscope, specific surface area and gas sensitivity measurements. The results revealed that the pure SnO2 nanocrystallites synthesized at 120 ℃ have high specific surface area (210.3 m2/g), and show a high sensitivity to C2H5OH gas. Both traits are beneficial in gas-sensitive detection application.
Key words:  Tin oxide, Synthesis, Nanocrystallite, Gas sensitivity
FundProject:
SnO2纳米晶的水热合成及其气敏特性
陈友存*,张元广
摘要:
以SnCl2*2H2O和 H2O2 为主要原料,在无水乙醇和水的混合溶剂中,不同温度下,水热法制备了不同粒径的SnO2纳米晶.利用X射线粉末衍射、透射电子显微镜和比表面积测定等手段对产物进行了表征,并对产物的气敏性进行了测定和分析.结果表明, 120、 150 和180℃时制备的产物均为单相SnO2,其对应的比表面积分别为210.3、 125.6 和69.2 m2/g.产物SnO2对还原性气体CO和C2H5OH均有一定的气敏性,其中对C2H5OH气体的气敏性远大于CO气体.产物气敏性的大小与其比表面积的大
关键词:  二氧化锡  制备  纳米晶  气敏性
DOI:10.1088/1674-0068/18/6/1015-1018
分类号: