Optical properties and self-assembly of Ag₂S nanoparticles synthesized by a one-pot method

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• 作者：Miao Wang ; Yu Wang ; Aiwei Tang ; Xu Li ; Yanbing Hou ; Feng Teng
• 关键词：Nanoparticles ; Optical properties ; Self-assembly ; Superlattice structures
• 刊名：Materials Letters
• 出版年：2012
• 出版时间：1 December, 2012
• 年：2012
• 卷：88
• 期：Complete
• 页码：108-111
• 全文大小：653 K

文摘

Spherical silver sulfide (Ag₂S) nanoparticles have been synthesized using a simple and one-pot route, which is a direct heating process using silver acetate and n-dodecanethiol as raw materials.Transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), and selected area electron diffraction (SAED) were used to confirm the size, morphology and crystal structure of as-obtained Ag₂S nanoparticles. The size of the products can be tuned by controlling the reaction time, and the growth process of the samples has been studied by employing UV-vis absorption spectra. Furthermore, these Ag₂S nanoparticles have a high tendency to self-assemble into two- or three-dimensional superlattice structures. This one-pot approach may be extended to synthesis of other metal sulfides nanoparticles.