Synthesis and luminescent properties of TiO2:Eu3+ nanotubes

被引：30
作者：
Li, Hongbo
Sheng, Ye
Zhang, Hongguang
Xue, Jiwei
Zheng, Keyan
Huo, Qisheng [1 ]
Zou, Haifeng [1 ]
机构：
[1] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China
来源：
POWDER TECHNOLOGY | 2011年 / 212卷 / 02期
关键词：
TiO2; nanotubes; Eu3+-doped; Formation process; Luminescence; OPTICAL-PROPERTIES; PHOTOLUMINESCENCE; FILMS; DY3+; IONS; EU3+;
D O I：
10.1016/j.powtec.2011.06.019
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
TiO2 nanotubes doped with Eu3+ ions have been fabricated by a simple hydrothermal process. The formation mechanism of TiO2:Eu3+ nanotubes is proposed in detail. The nanotubes are evolved from the rolling up of the anatase sheets, which was verified by characterizations using the X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscope (SEM). Compared with the TiO2:Eu3+ nanocrystals, TiO2:Eu3+ nanotubes exhibit considerably stronger photoluminescence (PL) under the excitation of 393 nm. Furthermore, the PL intensity increases with the increasing of Eu3+ concentration in TiO2 nanotubes, and concentration quenching occurs when Eu3+ concentration exceeds 2.0 mol%. In addition, the luminescent lifetime of the TiO2:Eu3+ nanotubes is also examined. It is expected that the TiO2:Eu3+ nanotubes can be used as novel semiconductor luminescence materials. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
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收藏
页码：372 / 377
页数：6
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