n/p-type changeable semiconductor TiO2 prepared from NTA

被引：42

作者：

Li, Qiuye ^{[1
]}

Wang, Xiaodong ^{[1
]}

Jin, Zhensheng ^{[1
]}

Yang, Dagang ^{[1
]}

Zhang, Shunli ^{[1
]}

Guo, Xinyong ^{[1
]}

Yang, Jianjun ^{[1
]}

Zhang, Zhijun ^{[1
]}

机构：

[1] Henan Univ, Key Lab Special Funct Mat, Kaifeng 475001, Peoples R China

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2007年 / 9卷 / 05期

基金：

中国国家自然科学基金;

关键词：

nanotube titanic acid; n/p-type changeable semiconductor; TiO2; synthesis;

D O I：

10.1007/s11051-006-9095-4

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel kind of nano-sized TiO2 (anatase) was obtained by high-temperature ( 400-700 degrees C) dehydration of nanotube titanic acid (H2Ti2O4(OH)(2), NTA). The high-temperature ( 400-700 degrees C) dehydrated nanotube titanic acids (HD-NTAs) with a unique defect structure exhibited a p-type semiconductor behavior under visible-light irradiation (lambda >= 420 nm, E-photon=2.95 eV), whereas exhibited an n-type semiconductor behavior irradiated with UV light (lambda = 365 nm, E-photon=3.40 eV).

引用

页码：951 / 957

页数：7

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