摘要
以无机盐为原料 ,采用室温固相化学反应法合成了尖晶石型复合氧化物ZnFe2 O4,X射线粉末衍射 (XRD)、透射电镜(TEM )等表征结果表明 ,固相反应完全 ,平均粒径约为 3 0nm左右 ;将样品制成烧结型气敏元件 ,发现在较低的工作温度时 ,对H2
Spinel type complex oxide nanocrystalline powders ZnFe 2O 4 was synthesized by solid state reaction at room temperature with inorganic reagent. The results from XRD and TEM indicate that the solid state reaction was complete and the mean grain size of the powder was about 30nm. The gas sensing properties of the pure powders were studied. The results reveal that the sensors based on ZnFe 2O 4 show a high sensitivity and selectivity to H 2S at low working temperature.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2002年第4期413-414,417,共3页
Journal of Functional Materials
基金
河南省杰出青年科学基金资助项目 (9840 4 2 2 0 0 )
河南省自然科学基金资助项目 (0 0 4 0 30 30 0 )
关键词
铁酸锌
半导体
气敏材料
室温
固相化学反应
ZnFe 2O 4
semiconductor
gas sensing material
room temperature
solid state reaction
