Low-temperature chemical solution synthesis of dendrite-like La(OH)_3 nanostructures and their thermal conversion to La_2O_3 nanostructures

作     者：Sheng-Chu Li Shui-Jiang Hu Ning Du Jia-Neng Fan Li-Jun Xu Jun Xu 

作者机构：Shaoxing Test Institute of Quality and Technical Supervision State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering Zhejiang University 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2015年第34卷第6期

页      面：395-399页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(No.51002133) 

主　　题：Crystal growth Nanomaterials Kinetics 

摘      要：A novel and simple chemical reaction method was developed to synthesize dendrite-like La（OH）3 nanostructures which was composed of centripetal arranged La（OH）3 nanorods with diameters of 50-100 nm and lengths of several micrometers. The effect of different alkaline sources on the morphology of La（OH）3 nanostructures was investigated. It is indicated that diethyl- enetriamine acts not only as an alkaline source, but also as a surfactant which induces the centripetal growth of La（OH）3 nanostructures. Moreover, dendrite-like La203 nanostructures were prepared by the calcination of La（OH）3 nanostructures at 750 ℃. The morphology, structure, and composition of the as-synthesized products were characterized by transmission electron microscopy （SEM）, high-resolution transmission electron microscopy, field emission scanning electron microscopy （FESEM）, and X-ray powder diffraction （XRD）.