Apparent local structural change caused by ultraviolet light on a TiO2 surface observed by scanning tunneling microscopy

被引：9

作者：

Komiyama, M ^{[1
]}

Li, YJ ^{[1
]}

Yin, DH ^{[1
]}

机构：

[1] Okazaki Natl Res Inst, Inst Mol Sci, Res Ctr Mol Scale Nanosci, Okazaki, Aichi 4448585, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2002年 / 41卷 / 7B期

关键词：

titanium dioxide; titania; STM; photoexcitation; ultraviolet light;

D O I：

10.1143/JJAP.41.4936

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An apparent local surface structural change at nanoscale was observed by scanning tunneling microscopy on a TiO2 surface upon irradiation with ultraviolet (UV) light. This phenomenon was reversible with UV light irradiation, and was interpreted to be due to the local accumulation of photoexcited states. This is the first real-space observation of inhomogeneous local charge distribution under UV light irradiation at nanoscale on a semiconductive photocatalyst surface, which may help identify the photocatalytic active sites and elucidate their reaction mechanisms.

引用

页码：4936 / 4938

页数：3

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