柠檬酸溶解-热解法合成纳米晶SnO_2粉体  

Synthesis of SnO_2 Nanocrystaline Powders by Citric Acid Dissolution-pyrolysis Method

作　　者：娄向东[1] 王晓兵[1] 彭传云[1] 徐甲强[2] 贾晓华[1] 

机构地区：[1]河南师范大学化学与环境科学学院,新乡453007 [2]郑州轻工业学院材料化工学院,郑州450002

出　　处：《无机化学学报》2005年第7期1085-1089,共5页Chinese Journal of Inorganic Chemistry

基　　金：河南省自然科学基金资助项目(No.0211062500)。

摘　　要：SnO2是一种重要的化学工业材料,由于其具有许多独特的光学、电学及催化性能,被广泛地应用于气敏元件[1]、电极材料[2,3]以及太阳能电池[4]等领域.SnO2半导体材料作为一种应用很广泛的气敏材料,自1968年问世以来得到了广泛的研究和发展.由于其具有寿命长、成本低、灵敏度高等特点,因而一直是电阻式气敏元件研究的热点[5～7].SnO2气敏材料的作用机理是表面控制型,因此,其气敏性能对粒径和比表面积大小都有很强的依赖性[8,9].如何制备出颗粒小,性能优良的SnO2粉体一直是近年来研究的热点.The SnO2 nanocrystaline powders were synthesized by citric acid dissolution-pyrolysis method. The medium products were analyzed by FTIR. The products were characterized by TG-DTA, XRD, TEM, SEM etc. The results showed that the Sri was coordinated with aconitase acid during the dissolution. The SnO2 particles prepared by this method were with a mean size of 5 similar to 10 nm. The calcined products presented lacunose micro-are structure, thus favoring the application as gas-sensitive materials.

关 键 词：SNO2 products application 纳米晶 热解法 酸溶解 粉体 合成 柠檬 TG-DTA acid with The the MET XRD TEM SEM was 

分 类 号：TS974.1[轻工技术与工程] TN304.21[电子电信—物理电子学]