中文摘要：

通过扫描隧道显微镜系统研究了原位氧化对二氧化钛（110）-1×2表面的影响,清楚观察到1×2结构随着氧化处理逐步被氧化为1×1结构,且在过量氧化条件下,在1×1结构上又重新形成1×2结构。结果表明,在优化条件下通过对二氧化钛（110）-（1×2）表面氧化处理,可以制备出大面积、无氧空位的高质量二氧化钛（110）-（1×1）表面。

英文摘要：

The influence of in situ oxidation treatment on TiO2（ 110）-（ 1 ×2） structure was investigated by scanning tunneling microscopy（ STM）. It was observed that the 1 × 2 structure could be gradually oxidized to 1 × 1 structure with the increase of the oxidation time but new 1 × 2 structure emerges on the top of the 1 × 1 structures under excessive oxidation condition. The large area and high- quality TiO2（ 110）-（ 1 ×1） structure without oxygen vacancy could be fabricated by oxidizing TiO2（ 110）-（ 1 ×2） structure at optimized oxidation parameters.