摘要：
Acquiring the ability to manipulate the microscopic processes of the oxidation of metals has huge technological implications ranging from corrosion protection to heterogeneous catalysis. However, current understanding of the microscopic processes of metal oxidation has been greatly limited by the inability of traditional experimental techniques to perform in situ measurements of the structures, chemistry, and kinetics as the reaction progresses. The work presented therefore encompasses an atomicscale study of the surface oxidation of metals ranging from oxygen surface chemisorption to subsequent oxide nucleation and growth. These studies exploit the unique in situ capabilities of microscopy and spectroscopy to dynamically measure the surface structure and chemistry under a wide range of oxidation conditions, which are coordinated by a number of theoretical modeling techniques ranging from the firstprinciples calculations to continuum elastic theory for developing direct insight into the reaction mechanism, including oxygen adsorption sites, diffusion path, reaction barrier, and surface/interface effects.
授课教师
长沙市工商行政管理局