| 金纳米粉末的制备与特性 |
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| 引用本文： | 曹辉,曾勇.金纳米粉末的制备与特性[J].黄金,2007,28(3):4-6. |
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| 作者姓名： | 曹辉 曾勇 |
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| 作者单位： | 1. 成都理工大学实验物理教研室
2. 四川大学物理系 |
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| 摘 要： | 应用超声辅助电解法制备金纳米粉末.电解液由柠檬酸三钠、硫酸钠组成;金箔作阳极,钛合金杆作阴极;钛合金杆作为超声波放大转换器与20kHz的超声波源相连接.由于超声波的空化效应,在阴极形成金聚集体将分散到电解液中,这样通过控制电流密度、超声波脉冲的周期和幅度就可以获得直径约为50nm左右的面心立方结构(fcc)的金纳米粉末.利用透射电镜(TEM)、X射线衍射(XRD)、X射线光电子谱,表征了金纳米粉末的结构、形貌及其化学组分.
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| 关 键 词： | 超声波辅助电解法 纳米粉末 金 纳米粉末 特性 Gold Nanoparticles Characterization 化学组分 立方结构 表征 光电子谱 射线衍射 透射电镜 利用 直径 周期 声波脉冲 电流密度 控制 聚集体 空化效应 连接 源相 |
| 文章编号： | 1001-1277（2007）03-0004-03 |
| 收稿时间： | 2006-10-30 |
| 修稿时间： | 2006年10月30 |
Synthesis and Characterization of Gold Nanoparticles |
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| Cao Hui,Zeng Yong.Synthesis and Characterization of Gold Nanoparticles[J].Gold,2007,28(3):4-6. |
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| Authors: | Cao Hui Zeng Yong |
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| Abstract: | Gold nanoparticles have been synthesized by the ultrasound assisted electrolytic process.The electrolyte consisted of tri-sodium citrate and sodium sulphate solution.A gold slice was used as the anode and a titanium-alloy horn as the cathode.20kHz ultrasound produced by an ultrasound generator was connected to the titanium-alloy horn as an amplitude converter.Due to the cavitation effect of the ultrasound,the gold aggregates at the cathode were dispersed into the electrolyte.In this way,face-center-cubic(fcc) gold nanoparticles with the size of about 50nm have been obtained by controlling the density of the electric current,the ultrasonic pulse period and amplitude.Their structure,morphology and components have been characterized using transmission electron microscope(TEM),X-rays diffraction(XRD),and X-rays photoelectron spectrometer(XPS). |
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| Keywords: | ultrasound assisted electrolytic process nanoparticles gold |
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