Control Synthesis of Silver Nanosheets, Chainlike Sheets, and Microwires via a Simple Solvent-Thermal Method

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• 作者：Jimin Du ; Buxing Han ; Zhimin Liu ; Yunqi Liu ; Dae Joon Kang
• 刊名：Crystal Growth & Design
• 出版年：2007
• 出版时间：May 2007
• 年：2007
• 卷：7
• 期：5
• 页码：900 - 904
• 全文大小：491K
• 年卷期：v.7,no.5(May 2007)
• ISSN：1528-7505

文摘

In this work, we present a facile method to synthesize silver nanosheets, chainlike sheets, and microwires viadecomposition of the AgNO₃ in ethanol in the presence of ammonia. The obtained samples have been characterized by X-raydiffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), high-resolution transmissionelectron microscopy (HRTEM), selected-area electronic diffraction (SAED), and energy dispersive X-ray analysis (EDXA). Theexperiments show that the concentration of ammonia, reaction temperature, and time are important factors for controlling themorphology of the products. On the basis of our experimental results, we propose an ammonia-tuning Oswald ripening mechanismto elucidate the formation of different morphologies of silver structures such as the nanosheets, chainlike sheets, and microwires.The current-voltage characteristic of the individual silver microwire shows linear behavior, and the electrical conductivity of thesilver microwire is found to be comparable to that of the bulk silver materials, indicating that it can serve as interconnect in fabricatingthe micro/nanodevices.