NO在Pt（111）表面吸附层的Nexafs研究
A Nexafs Study of Nitric Oxide Layers Adsorbed from a nitrite Solution onto a Pt(111) Surface
摘要：
用近边X射线吸收精细结构谱（NEXAFS）、X射线光电子能谱学（XPS）、低能电子衍射（LEED）和扫描隧道显微镜（STM）研究了NO分子在Pt（111）表面的吸附. LEED和STM图像表明NO吸附在Pt（111）表面后没有形成长程有序结构。虽然总的NO覆盖率是非常低的，在N K-边和O K-边吸收光谱的光谱特征已被挑出来，并与不同的物种诱导这种制备方法。从这些测量结果可以得出结论，NO分子吸附通过N原子在直立构象。最大饱和覆盖率约为0.3单层，虽然一氧化氮是主要成分，亚硝酸盐和氮物种轻微共吸附在表面上。从这项研究中获得的结果进行了比较，与以前在文献中报道的NO吸附在Pt（111）在超高真空条件下。
英文摘要：
NO molecules adsorbed on a Pt(111) surface from dipping in an acidic nitrite solution are studied by near edge X-ray absorption fine structure spectroscopy (NEXAFS), X-ray photoelectron spectroscopy (XPS), low energy electron diffraction (LEED) and scanning tunnelling microscopy (STM) techniques. LEED patterns and STM images show that no long range ordered structures are formed after NO adsorption on a Pt(111) surface. Although the total NO coverage is very low, spectroscopic features in N K-edge and O K-edge absorption spectra have been singled out and related to the different species induced by this preparation method. From these measurements it is concluded that the NO molecule is adsorbed trough the N atom in an upright conformation. The maximum saturation coverage is about 0.3 monolayers, and although nitric oxide is the major component, nitrite and nitrogen species are slightly co-adsorbed on the surface. The results obtained from this study are compared with those previously reported in the literature for NO adsorbed on Pt(111) under UHV conditions.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
