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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers & Short Notes >Small-Angle X-Ray Scattering Method to Determine the Size Distribution of Gold Nanoparticles Chemisorbed by Thiol Ligands
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Small-Angle X-Ray Scattering Method to Determine the Size Distribution of Gold Nanoparticles Chemisorbed by Thiol Ligands

机译：小角度X射线散射法测定硫醇配体化学吸附的金纳米粒子的尺寸分布

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摘要

The scattering profiles of gold nanoparticles prepared by means of two different methods were measured by the small-angle X-ray scattering, the profiles were found to be well reproduced by Γ-distribution function. This result suggests that the two methods yield nanoparticles with different average diameters and different diameter dispersions. The average diameter of dodecanethiol-chemisorbed nanoparticles prepared by the direct chemisorption method was 1.9 nm, and the diameter of particles prepared by the ligand-exchange method was 4.0 nm. These values were consistent with the value determined by transmission electron microscopy. The crystallite size was determined by wide-angle X-ray diffraction analysis, and the results indicated that the nanoparticles, even those that were 4 nm in size, were single crystals.
机译：通过小角X射线散射测量了通过两种不同方法制备的金纳米颗粒的散射分布，发现该分布可以通过Γ分布函数很好地再现。该结果表明两种方法产生的纳米颗粒具有不同的平均直径和不同的直径分散度。通过直接化学吸附法制备的十二烷硫醇化学吸附的纳米颗粒的平均直径为1.9 nm，通过配体交换法制备的颗粒的直径为4.0 nm。这些值与通过透射电子显微镜确定的值一致。通过广角X射线衍射分析确定了微晶尺寸，结果表明，即使是4nm的纳米颗粒也是单晶。

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