| Co/Co_9S_8/ZnO核壳结构纳米微球的制备与表征 |
| |
| 引用本文： | 赖文忠,董校捷,黄婧,冷永华,李星国.Co/Co_9S_8/ZnO核壳结构纳米微球的制备与表征[J].无机材料学报,2010,25(3):265-271. |
| |
| 作者姓名： | 赖文忠 董校捷 黄婧 冷永华 李星国 |
| |
| 作者单位： | 1. 北京分子科学国家实验室, 稀土材料化学及应用国家重点实验室, 北京大学 化学与分子工程学院, 北京 100871; 2. 三明学院 化学与生物工程系, 三明 365004 |
| |
| 基金项目： | 国家自然科学基金(20671004,20821091,20971009); 科技部863项目(2007AA05Z118,2007AA030114); 教育部重大培育项目(707002) |
| |
| 摘 要： | 在无水无氧条件下通过热分解还原制备Co纳米微粒,利用Co9S8和ZnO晶格的相匹配性,通过层层自组装对Co表面进行修饰,得到Co/Co9S8/ZnO核壳结构纳米微球.采用XRD、TEM、SQUID、光致发光光谱(PL)等对产物进行了表征.通过调节反应参数制备出核壳结构的Co/Co9S8/ZnO复合纳米微球,平均粒径58.8nm,壳层厚度均匀,常温下显示铁磁性,矫顽力为18.7kA/m.PL表明,产物在380~390nm处的带边跃迁不明显,光致发光最强峰在468nm处,属氧缺陷发射峰,研究了影响产物形貌的主要因素.结果表明,以油酸(OLA)及三正辛基氧化磷(TOPO)为溶剂和表面活性剂,Zn(acac)2温度为70℃、用量为1mmol,控制Co的硫化反应时间为5min,有利于核壳结构产物的形成.初步分析了Co/Co9S8/ZnO核壳结构纳米微球的形成机理.
|
| 关 键 词： | Co/Co9S8/ZnO 核壳结构 纳米微球 制备 光致发光 磁学性能 |
| 收稿时间： | 2009-07-16 |
| 修稿时间： | 2009-10-16 |
Preparation and Characterization of Co/Co_9S_8/ZnO Core-shell Nanoshperes |
| |
| LAI Wen-Zhong,DONG Xiao-Jie,HUANG Jing,LENG Yong-Hua,LI Xing-Guo.Preparation and Characterization of Co/Co_9S_8/ZnO Core-shell Nanoshperes[J].Journal of Inorganic Materials,2010,25(3):265-271. |
| |
| Authors: | LAI Wen-Zhong DONG Xiao-Jie HUANG Jing LENG Yong-Hua LI Xing-Guo |
| |
| Affiliation: | 1. Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; 2. Department of Chemistry and Biology Engineering, Sanming University, Sanming 365004, China |
| |
| Abstract: | 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 eff... |
| |
| Keywords: | Co/Co9S8/ZnO core-shell structure nanoshperes preparation photoluminescence(PL) magnetic property |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《无机材料学报》浏览原始摘要信息 |
|
点击此处可从《无机材料学报》下载全文 |
|
