全文下载：2013010022
雷楠楠， 刘鲁梅*， 胡正水
(青岛科技大学 材料科学与工程学院，山东 青岛266042)
摘要: 采用溶剂热方法合成了均分散SnO2纳米晶体。首先探索了在同一溶剂中，形成均分散SnO2纳米晶体的最佳反应条件: 聚乙烯吡咯烷酮（PVP-k30）的质量浓度为5 g·L-1，SnCl4·5H2O的浓度为0.14 mol·L-1，反应温度为180 ℃，反应时间为24 h。在保持最佳反应条件的基础上，还研究了不同溶剂中PVP-k30与溶剂之间相互作用对产物形貌、结晶性及吸光性能的影响，结果表明:在PVP-k30的乙醇溶剂中，物质之间的相互作用促使产物形成花簇状结构；而在N，N-二甲基甲酰胺（DMF）或DMF与乙醇(体积比为1∶1)溶剂中，产物的形貌为链状结构；花簇状产物的结晶性能与吸光性能要优于链状结构产物。
关键词: 溶剂热法； 纳米SnO2； 聚乙烯吡咯烷酮； 微观形貌
中图分类号: O 611文献标志码： A
PVP/Solvent-assisted Solve-thermal Synthesis Nanoscale SnO2
LEI Nan-nan, LIU Lu-mei, HU Zheng-shui
(CollegeofMaterials Scienceand Engineering,QingdaoUniversityof Science and Technology,Qingdao266042,China)
Abstract: Good-dispersed tin dioxide (SnO2) was synthesized via solve-thermal method. First，in the same solvent，the optimum reaction conditions that facilitated products to form nanometer tin dioxide crystal were explored and confirmed as follows: 5 g·L-1 PVP-k30,0.14 mol·L-1 SnCl4·5H2O,180 ℃,24 h.On the basis of the optimum reaction conditions, effects of interactions among PVP-k30 and different solvents on the morphology, crystalline and light absorption property were investigated further in the different solvents.The results showed that in ethanol solvent containing PVP-k30, interactions among substances prompted the product to assemble petal structure; whereas the solvent were DMF or DMF and C2H5OH (the volume ratio is 1∶1),the morphology was chain structure; The crystalline and light absorption properties of the petal structure products were superior to the chain-like structure.
Key words: solve-thermal method; nanometer tin dioxide; poly(N-vinyl-2-pyrrolidone); micro structure
收稿日期：2012-03-05
作者简介： 雷楠楠(1985—)，女，硕士研究生.*通信联系人.
