Preparation and Characterization of Co/Co9S8/ZnO Core-shell Nanoshperes

doi:10.3724/SP.J.1077.2010.00265

CORC > 北京大学 > 化学与分子工程学院

	Preparation and Characterization of Co/Co9S8/ZnO Core-shell Nanoshperes
	Lai Wen-Zhong ; Dong Xiao-Jie ; Huang Jing ; Leng Yong-Hua ; Li Xing-Guo
刊名	无机材料学报
	2010
关键词	Co/Co9S8/ZnO core-shell structure nanoshperes preparation photoluminescence(PL) magnetic property CORE/SHELL NANOPARTICLES NANOCRYSTALS PARTICLES SILICA NANOCOMPOSITES SURFACE SPHERES METAL
DOI	10.3724/SP.J.1077.2010.00265
英文摘要	Co/Co9S8/ZnO core-shell nanoshperes were successfully prepared via a thermal decomposition in the water and oxygen-free environmert. The lattice-match between Co9S8 and ZnO played a significant role on the layer-by-layer self-assembly of the core-shell nanospheres. The as-synthesized nanospheres were characterized by XRD, TEM, SQUID and Photoluminescence Spectra. By controlling the reaction parameters, the core-shell nanostructure with uniform size of about 60 nm and shell thickness of 13.6nm was obtained. The effects on the shape control of the product were further investigated, and a proper formation mechanism of the Co/Co9S8/ZnO core-shell nanostructures was presumed. The results show that the favorable procedure to obtain the core-shell nanostructure shape is as follows, the reactants of OLA as solution and TOPO as surfactant, and the optimal temperature and quantity for precursor Zn(acac)(2) is 70 degrees C and 1 mmol, respectively, in additon, the sulfidation reaction time for Co is 5 min. The products show ferromagnetism at room temperature with a coercive force of 18.7kA/m. In the photoluminescence measurement, the strongest peak at 460nm which is attributed to oxygen defects can be obtained, while the band edge transitions of ZnO between 380nm and 390nm can hardly be observed.; Materials Science, Ceramics; SCI(E); EI; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 1; 3; 265-271; 25
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/313205]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Lai Wen-Zhong,Dong Xiao-Jie,Huang Jing,et al. Preparation and Characterization of Co/Co9S8/ZnO Core-shell Nanoshperes[J]. 无机材料学报,2010.
APA	Lai Wen-Zhong,Dong Xiao-Jie,Huang Jing,Leng Yong-Hua,&Li Xing-Guo.(2010).Preparation and Characterization of Co/Co9S8/ZnO Core-shell Nanoshperes.无机材料学报.
MLA	Lai Wen-Zhong,et al."Preparation and Characterization of Co/Co9S8/ZnO Core-shell Nanoshperes".无机材料学报 (2010).