Interaction of SO2 with Oxygen on Ni(100) Studied by XPS and NEXAFS

Bulletin of the Korean chemical society

Chang Min Kim¹ 

关键词: Ni;    NiO;    SO2;    NEXAFS;    Surface;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The adsorption and surface reactions of SO2 on Ni(100), c(2x2)_O/Ni (100) and NiO(111)/Ni(100) surfaces have been investigated using X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) technique. On Ni(100), chemisorbed SO2 is formed at 160 K. When SO2 is adsorbed on c(2x2)_O/Ni(100) at 160 K, SO2 reacts with oxygen to form SO3 and trace amount of SO4 species. SO3 is adsorbed on this surface with its C3 axis perpendicular to the surface. On a NiO(111)/Ni(100) surface, both SO3 and SO4 species are formed at 160 K from adsorbed SO2.

【 授权许可】

Unknown