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溶剂热法制备纳米SnO2及其气敏性能研究
Solvothermal preparation of SnO2 nanopowder and its gas sensing properties
【摘要】 以SnCl2·2H2O为原料,采用溶剂热法,分别在体积分数为95%的乙醇及95%乙醇–油酸体系中制备了单分散的SnO2纳米粉。利用XRD和TEM等手段,对产物进行了表征,并对其气敏性能进行了测定。结果表明:在95%乙醇–油酸体系中制备的SnO2,粒径约为15nm,在4V的工作电压下,对体积分数为100×10–6的氯气灵敏度为370,响应–恢复时间仅为1s。
【Abstract】 SnO2 nanopowder was prepared by solvothermal method using SnCl2·2H2O as raw material in different solvents. It was characterized by means of powder X-ray diffraction,transmission electron microscope and gas sensing properties measurements. The results show that the sizes of SnO2 nanopowder prepared in alcohol (95 %) and oleic acid mixed solvent are less than 15 nm. Its sensitivity is 370 to 100×10-6 (volume fraction) chlorine at working voltage 4 V,and response-recovery time is only one second.
【关键词】 电子技术;
SnO2;
纳米粉体;
溶剂热法;
气敏传感器;
【Key words】 electron technology; SnO2; nanopowder; solvothermal method; gas sensors;
【Key words】 electron technology; SnO2; nanopowder; solvothermal method; gas sensors;
【基金】 河南省科技攻关资助项目(0524250038)
- 【文献出处】 电子元件与材料 ,Electronic Components and Materials , 编辑部邮箱 ,2007年09期
- 【分类号】O614.432
- 【被引频次】5
- 【下载频次】221