Photoluminescence and Photocatalytic Properties of Eu3+ Doped TiO2 Micro-nanoparticles Prepared via Sol-Gel Method

被引：0

作者：

Wei M. ^{[1
]}

Tian X. ^{[1
]}

Long X. ^{[1
]}

Ji C. ^{[1
]}

Huang Z. ^{[2
]}

Wen J. ^{[1
]}

Peng Y. ^{[1
]}

机构：

[1] Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials, School of Materials and Environmental Engineering, Hunan University of Humanities Science and Technology, Loudi

[2] National Electronic Ceramic Product Quality Supervision and Inspection Center, Loudi

来源：

Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2022年 / 40卷 / 01期

关键词：

Optical properties; Photo-catalysis; Rare earths; Sol-gel process; TiO[!sub]2[!/sub; X-ray diffraction;

D O I：

10.11785/S1000-4343.20220107

中图分类号：

学科分类号：

摘要：

The undoped and Eu3+ doped TiO2 micro-nanoparticles were prepared via a simple sol-gel process. The phase structure, morphology, chemical and optical properties of samples were characterized by XRD, SEM, FT-IR, UV-Vis DR, PLE and PL spectroscopy.The typical sample has a spherical particle morphology with a mean size of 394 nm. The relation of PL intensity and photocatalytic activity of Eu3+ doped TiO2 was investigated.The Eu3+ ions had a significant inhibitory effect on the A-R phase transition and could only migrate into the interstitial sites and the TiO2 nanocrystalline boundary as well as simple substitution of the Ti4+ site to form Ti-O-Eu. The typical sample had the massive surface hydroxyl groups, adsorbing organic pollutions via hydrogen bonding. The large band gap value facilitated the separation of electrons and holes. The intensity ratio of emission peak 5D0→7F2/5D0→7F1 represents the degree of lattice distortion, which affects the photocatalytic properties. The 1% Eu3+ doped sample had the highest photo-catalytic activity, degradation rate of 90.6% and the reaction rate of (270.7±11.8)×10-4 min-1 towards MO. © 2022, Editorial Office of Journal of the Chinese Society of Rare Earths. All right reserved.

引用

页码：60 / 67

页数：7

共 22 条

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