La(Oxin)_3·3H_2O纳米晶的一步固相化学合成及表征  

One-step Solid-state Synthesis and Characterization of Nanocrystalline Lanthanum 8-Quinolinolate

作　　者：李道华[1] 忻新泉[2] 

机构地区：[1]内江师范学院化学与生命科学学院,内江641112 [2]南京大学配位化学研究所配位化学国家重点实验室

出　　处：《应用化学》2008年第12期1421-1424,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(29631040);四川省应用基础研究计划(07JY029-007)资助项目

摘　　要：在近室温条件和超声波作用下,通过固相化学反应一步合成了La(Oxin)3.3H2O(8-羟基喹啉镧)纳米晶。用X射线衍射及电子衍射法分析了固相产物的物相,用透射电子显微镜观测粒子的大小、形貌、粒径及粒径分布。结果表明,产物为颗粒大小均匀、平均粒径约为40 nm的纳米晶,产率为95.9%。改变反应物、反应物配比、掺入惰性物质、加入微量溶剂或表面活性剂、研磨不同时间等固相反应条件对合成纳米晶的晶粒形貌、粒度和粒径分布有一定影响。合成的纳米晶材料具有操作方便、合成工艺简单、产率高、选择性好、粒径均匀、且粒度可控、污染少,同时又可以避免或减少液相中易出现的硬团聚现象等突出优点。At near room temperature and under uhrasonication, nanocrystalline lanthanum 8-quinolinolate was synthesized by one-step solid-state chemical reaction. The solid phase was characterized by powder X-ray diffraction（XRD） and electron diffraction（ED）. The particle size and distribution, and morphology of the prepared nanoerystallites were observed by transmission electron microscopy（TEM）. The size of the spherical particles was relatively uniform and the average particle diameter was about 40 nm, and the reaction yield was approximately 95.9%. Furthermore, the reaction conditions, such as reactant type and ratio, presence of inert substance, addition of trace solvent or surfactants, and porphyrization time may influence the morphology, particle size and size distribution of the final product. The process is simple easy to operate, resulting a product of uniform particle size distribution and controllable size with less pollution. Moreover, nanocrystallites of quality can be produced with a high selectivity in high yields and little or no agglomeration normally found in reactions in liquid phase.

关 键 词：La(Oxin) ·3H2O 纳米晶 超声波 固相化学合成 结构表征 

分 类 号：O611.4[理学—无机化学]