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    汪 雷, 唐景昌

    NEXAFS INVESTIGATION OF c(22)(K+CO) COADSORPTION ON Co{1010} SURFACE

    WANG LEI, TANG JING-CHANG
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    • 对CO和K共吸附在CO{1010}表面的系统进行了O的1s NEXAFS理论研究,证实吸附分子CO的键长比气体状态时增长约0.01nm.用MSC(多重散射团簇)理论计算谱与实验结果比较发现:在原峰右侧出现了一个新的弱结构.证明了此结构是由于K通过钴衬底对CO的间接作用造成的,它具有共振的性质.
      Theoretical studies of oxygen 1s NEXAFS of c(22)(K+CO) adsorption on Co{1010} surface have been performed by the multiple-scatterring cluster method(MSC).The results show that the bond-length of adsorbed CO molecule is longer than that of the gas-phase one by about 0.01nm.The comparison between the calculated spectra and the experimental data demonstrates that a new weak -like structure appears on the right of the original resonance.This structure comes from the indirect interaction to CO molecule due to K atoms and the substrate.
        • 基金项目:国家自然科学基金(批准号:19474043)资助的课题.
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      出版历程
      • 收稿日期:1997-12-25
      • 修回日期:1998-03-02
      • 刊出日期:1999-01-20

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