Preparation and Characterization of Co/Co9S8/ZnO Core-shell Nanoshperes
Lai Wen-Zhong1,2; Dong Xiao-Jie1; Huang Jing1; Leng Yong-Hua1; Li Xing-Guo1
AbstractCo/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.
KeywordCo/co9s8/zno Core-shell Structure Nanoshperes Preparation Photoluminescence(Pl) Magnetic Property
Indexed BySCI
WOS IDWOS:000276281300009
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLai Wen-Zhong
Affiliation1.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
2.Sanming Univ, Dept Biol & Chem Engn, Sanming 365004, Peoples R China
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Lai Wen-Zhong,Dong Xiao-Jie,Huang Jing,et al. Preparation and Characterization of Co/Co9S8/ZnO Core-shell Nanoshperes[J]. JOURNAL OF INORGANIC MATERIALS,2010,25(3):265-271.
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.JOURNAL OF INORGANIC MATERIALS,25(3),265-271.
MLA Lai Wen-Zhong,et al."Preparation and Characterization of Co/Co9S8/ZnO Core-shell Nanoshperes".JOURNAL OF INORGANIC MATERIALS 25.3(2010):265-271.
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