摘要
采用喷雾燃烧的方法,以HAuCl4在高温火焰中原位分解生成的Au纳米颗粒为催化剂,以SnCl4·5H2O为锡源,简单、快速地制备高度结晶的SnO2纳米线；利用X射线衍射、透射电镜和选区电子衍射等对制备的纳米线进行表征；研究SnO2纳米线的晶格间距和晶体的生长方向,提出高温火焰快速反应过程中Au纳米颗粒催化SnO2纳米线的生长机理.结果表明,制备的SnO2纳米线为正方晶系的金红石型氧化锡单晶结构,直径为15～25 nm,长度在几百纳米到几微米之间.
Highly crystallized SnO2 nanowires were prepared by flame spray pyrolysis approach,using SnCl4.5H2O as tin source and chloroauric acid to catalyze the growth of SnO2 nanowires.The as-obtained SnO2 nanowires were characterized by XRD,TEM and SAED.The lattice distance and growth direction of SnO2 nanowires were studied and the nucleation growth mechanism of SnO2 nanowires was proposed.The results show that the tetragonal rutile SnO2 nanowires possess a diameter from 15 to 20 nm and a length of hundreds to thousands nanometers.
出处
《中国粉体技术》
CAS
北大核心
2013年第4期1-4,共4页
China Powder Science and Technology
基金
国家自然科学基金项目
编号:21136006
21106038
21206043
21236003
教育部新世纪优秀人才计划项目
编号:NCET-11-0641
上海市曙光计划项目
编号:10SG31
高等学校博士学科点专项科研基金项目
编号:20110074110010
关键词
喷雾燃烧
纳米线
纳米颗粒
flame spray pyrolysis
nanowire
nanoparticle
