Preparation and characterization of γ-La_2S_3 nanoparticles from thermal decomposition

作     者：Pei-sen Li Huan-yong Li Wan-qi Jie 

作者机构：School of Materials Science and Engineering Northwestern Polytechnical University Xi＇an 710072 China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2011年第18卷第6期

页      面：748-752页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081704[工学-应用化学] 07[理学] 08[工学] 070205[理学-凝聚态物理] 070301[理学-无机化学] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 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）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National High-Tech Research and Development Program of China (No.2009AA03Z431) 

主　　题：chalcogenides nanoparticles thermogravimetric analysis decomposition optical properties 

摘      要：To synthesize pure γ-La2S3 at lower temperature,lanthanide complex La（Et2S2CN）3·phen,containing La？S bond,was chosen as the precursors to *** obtained samples were characterized by X-ray power diffraction （XRD）,field-emission scanning electron microscopy （FE-SEM） with an energy dispersive spectrometer and UV-Vis diffuse reflectance *** decomposition mechanism of the lanthanide complex was studied by thermogravimetric analyses （TGA）.The results show that the obtained samples are cubic phase particles with sizes among 20-50 nm and the band gap is 2.97 eV,which is bigger than that of its bulk ***/DTG results indicate that La（Et2S2CN）3·phen decomposed to γ-La2S3 via La4（Et2S2CN）3 as an intermediate product.