Synthesis of ZnWO4@MWO4 (M = Mn, Fe) core-shell nanorods with optical and antiferromagnetic property by oriented attachment mechanism

被引:54
作者
Zhang, Qiao
Chen, Xianyu
Zhou, Yuxue
Zhang, Guobing
Yu, Shu-Hong [1 ]
机构
[1] Univ Sci & Technol China, Div Nanomat & Chem, Hefei Natl Lab Phys Sci Microscale, Dept Chem, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Dept Phys, Hefei 230026, Peoples R China
关键词
D O I
10.1021/jp068282y
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Uniform core-shell heterostructured ZnWO4@MWO4 (M = Mn, Fe) nanorods with both optical and antiferromagnetic properties have been synthesized by a simple refluxing method under mild conditions in which the crystallization event of MWO4 happened on the backbone of ZnWO4 single crystalline nanorods in a ligand-free system. ZnWO4 nanorod-directed oriented aggregation mechanism has been clearly observed for the formation of heterostructured ZnWO4@MWO4 (M = Mn, Fe) nanorods. The shell thickness of MWO4 (M = Mn, Fe) could be tuned by changing the molar ratio of these raw materials. UV-visible absorption spectra and photoluminescence (PL) spectra of the as-prepared ZnWO4@MWO4 (M = Mn, Fe) core-shell nanorods show the similar "red-shift" trend, which can be ascribed to the influences of the out-layered shell. The ZnWO4@MWO4 (M = Mn, Fe) nanorods displayed both optical and antiferromagnetic properties. The result demonstrated that the multifunctional anisotropic nanostructures with a heteroshell could be synthesized directly based on the oriented attachment mechanism.
引用
收藏
页码:3927 / 3933
页数:7
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