Band gap narrowing of TiO2 by nitrogen doping in atmospheric microwave plasma

被引：94

作者：

Hong, YC ^{[1
]}

Bang, CU ^{[1
]}

Shin, DH ^{[1
]}

Uhm, HS ^{[1
]}

机构：

[1] Ajou Univ, Dept Mol Sci & Technol, Suwon 443749, South Korea

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 413卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2005.08.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nitrogen (N)-doped titanium dioxide (TiO2) particles of nanometric size are directly synthesized in an atmospheric microwave plasma-torch using gas-phase titanium tetrachloride (TiCl4). The absorption edge of the TiO2-xNx powders shifts from 365 to 500 nm in UV-visible spectrum, as the content x of nitrogen in titanium dioxide powders increases from x = zero. From the results of the XRD, XPS, and UV-visible data, incorporation of N into the O site of TiO2 was enhanced in a mixture of N-2 and O-2 by an atmospheric microwave plasma torch, contributing to the band gap narrowing. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：454 / 457

页数：4

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