Shape-Controlled Synthesis of CdS Nanocrystals in Mixed Solvents

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• 作者：Haibin Chu ; Xuemei Li ; Guangda Chen ; Weiwei Zhou ; Yan Zhang ; Zhong Jin ; Junjian Xu ; and Yan Li
• 刊名：Crystal Growth & Design
• 出版年：2005
• 出版时间：September 2005
• 年：2005
• 卷：5
• 期：5
• 页码：1801 - 1806
• 全文大小：529K
• 年卷期：v.5,no.5(September 2005)
• ISSN：1528-7505

文摘

The formation of CdS nanotetrahedrons, pencil-shaped nanorods, tetrapods, prickly spheres, and highaspect-ratio hexagonal nanoprisms has been, respectively, achieved by adjusting the ratio of two solventsethylenediamine and ethylene glycol under the solvothermal condition. None of the surfactants or other templateswas needed in the process. The reaction time and temperature can be used as the additional means to control thesize and morphology. By closely inspecting the growing process of the tetrapod structure and the crystallographicanalysis of the products, we proposed that the lattice space match and the location match of ions at the interface ofthe zinc blende core and the wurtzite arms are two important structural factors to guide this furcate growth. Also,the anisotropic adsorption ability of ethylenediamine at the different surfaces of wurtzite CdS crystals results inthe 1D growth of the arms. The possible growing mechanisms of CdS with other shapes were also discussed.