XRD and XAS studies of Pt nanoparticles
We use ethanol-water reduction method to prepare the PVP-protected Pt nanoparticles. XRD shows that Pt nanoparticles have the same XRD patterns as bulk Pt except the broaden of XRD peaks. The local structure around Pt was investigated by using X-ray absorption spectra and found the coordination numbers and Pt-Pt distances of these nanoparticles are decreased. At the same time, We found that the strength of the Pt-L3 edge white line increase, the XANES calculation simulates the surface effect of nanoparticles can not reproduce the experimental spectrum, so this change is attributed to the rearrange of Pt nanoparticles.
Pt nanoparticles TEM XRD XAS
陈兴 王磊 朱世伟 杜军
北京有色金属研究总院先进电子材料研究所,北京,100088
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）