磁控溅射法制备金团簇纳米颗粒及性能表征
Preparation and characterization of gold nanoparticles by magnetron sputtering technique
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摘要: 采用磁控溅射法制备金团簇纳米颗粒，用透射电镜(TEM)、X射线衍射(XRD)、紫外可见光分光光度计(UV-Vis)和X射线光电子能谱(XPS)等分析手段对其表征，研究了金团簇纳米颗粒的形貌、颗粒度、结构、光吸收性质及物质成份。研究结果表明：制备的金团簇纳米颗粒呈球形，平均粒径在10 nm左右，粒径分布均匀，无团聚、氧化现象，颗粒的结构为面心立方。在519 nm处出现团簇颗粒的表面等离子共振吸收峰，测试得到Au(4f7/2)和Au(4f5/2)电子的结合能分别为83.3 eV和86.9 eV，并且没有出现金的氧化产物。Abstract: Gold nanoparticles have been prepared by magnetron sputtering technique, and their morphologies, granularities, structures, optical absorption properties and chemical components have been characterized by using TEM, XRD, UV-Vis and XPS. The results indicate that the gold nanoparticles prepared are approximately spherical, their average size is estimated to be about 10nm, and they are pure and unpolluted. The structure of the gold nanoparticles is face center cubic (FCC). The surface plasma resonant absorption appears at 519 nm.The binding energy of 4f7/2 and 4f5/2 electrons of elemental gold atoms are 83.3 eV and 86.9 eV, respectively. And there is no asymmetry in the peak, which indicates that no Au atoms are oxidated.
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