Large-scale synthesis and the roles of growth conditions on the formation of Zn₂GeO₄ nanorods

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• 作者：L.Z. Pei ; ^a ; ^{lzpei@ahut.edu.cn"" rel=""nofollow} ; ^{lzpei1977@163.com"" rel=""nofollow} ; Y. Yang^a ; L.J. Yang^a ; C.G. Fan^a ; C.Z. Yuan^a ; Qian-Feng Zhang^a
• 关键词：A. Nanostructures ; B. Crystal growth ; D. Optical properties
• 刊名：Solid State Communications
• 出版年：2011
• 出版时间：July-August 2011
• 年：2011
• 卷：151
• 期：14-15
• 页码：1036-1041
• 全文大小：2115 K

文摘

Large-scale Zn₂GeO₄ nanorods with a length of about 10 μm have been synthesized via a facile hydrothermal process in the absence of any surfactant. The synthesized nanorods are single crystals with a rhombohedral phase. The dependence on the growth conditions, such as reaction temperature, reaction time, compactness and GeO₂ concentration, of the formation, morphologies and sizes of the Zn₂GeO₄ nanostructures has been investigated. Proper selection and combination of the growth conditions are the key aspects to control the formation, morphologies and sizes of the Zn₂GeO₄ nanostructures. The nucleation and crystalline growth mechanism are proposed to explain the formation and growth of Zn₂GeO₄ nanorods. The photoluminescence spectrum of the Zn₂GeO₄ nanorods exhibits three fluorescence emission peaks centered at 421, 488 and 529 nm when the excitation wavelength is 235 nm.