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Adsorption of SO_2 on Ni(110) studied by S K-edge XAFS

机译:S K-edge XAFS研究Ni(110)上SO_2的吸附

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Surface structure and electronic properties of submonolayer SO_2 molecularly adsorbed on Ni(110) have been investigated by means of S K-edge XAFS. It is found that the SO_2 molecule is adsorbed with the molecular plane parallel to the surface and with an elongated S-O bond distance compared to that of a free molecule. The S atom is located on long- and short-bridge sites with the almost equal probabilities. A significant amount of charge transfer occurs from the substrate to the SO_2 π~* orbital. Such structural and electronic properties are essentially similar to those of SO_2 on Ni(100)and Ni(111).
机译:利用S K-edge XAFS研究了分子吸附在Ni(110)上的亚单分子SO_2的表面结构和电子性能。发现与游离分子相比,SO_2分子以平行于表面的分子平面被吸附并且具有延长的S-O键距离。 S原子以几乎相等的概率位于长桥和短桥位上。从衬底到SO_2π〜*轨道发生大量电荷转移。这种结构和电子性质基本上类似于Ni(100)和Ni(111)上的SO_2。

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