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Title: Microstructural and photocatatlytic properties of Eu-doped mesporous titanium dioxide nanopaticles by sol–gel method

Abstract

Highlights: ► Eu-doped TiO{sub 2} was prepared using sol–gel method in the presence of pluronic P123. ► Eu atoms were doped into the lattice of anatase TiO{sub 2}. ► Eu doping can increase the band gap of TiO{sub 2}. ► Eu-doped TiO{sub 2} exhibited much higher photocatalytic activity than undoped TiO{sub 2}. -- Abstract: The europium-doped mesoporous titanium dioxide nanoparticles (Eu-doped TiO{sub 2}) with the different Eu/Ti rations were prepared using sol–gel method in the presence of tir-block copolymer pluronic P123. The as-prepared catalysts were characterized by low-angle and wide-angle X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), N{sub 2} absorption–desorption, ultraviolet visible light spectroscopy (UV–vis) and X-ray photoelectron spectroscopy (XPS), respectively. The XRD analysis indicated that all as-prepared TiO{sub 2} samples were mainly anatase phase and mesoporous. The crystallite sizes were in the range 6–11 nm, in consistent with the results obtained form TEM images. HRTEM and XPS showed that the europium atoms were doped into the lattice of anatase TiO{sub 2}. Eu doping can not only increase the stability of mesoporous TiO{sub 2}, but also make the absorption edge position move toward shorter wavelength. The photodecomposition experiments showed that the photodegradation activity of Eu-doped TiO{sub 2} wasmore » higher than that of undoped TiO{sub 2}.« less

Authors:
 [1]; ; ; ; ;  [1]
  1. National Laboratory of Mineral Materials, School of Materials Sciences and Technology, University of Geosciences, Beijing 100083 (China)
Publication Date:
OSTI Identifier:
22215546
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION; COPOLYMERS; DOPED MATERIALS; EUROPIUM; MICROSTRUCTURE; NANOSTRUCTURES; SEMICONDUCTOR MATERIALS; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Chen, Daimei, E-mail: chendaimei@cugb.edu.cn, Zhu, Qian, Lv, Zhijin, Deng, Xutao, Zhou, Fengsan, and Deng, Yanxi. Microstructural and photocatatlytic properties of Eu-doped mesporous titanium dioxide nanopaticles by sol–gel method. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.08.021.
Chen, Daimei, E-mail: chendaimei@cugb.edu.cn, Zhu, Qian, Lv, Zhijin, Deng, Xutao, Zhou, Fengsan, & Deng, Yanxi. Microstructural and photocatatlytic properties of Eu-doped mesporous titanium dioxide nanopaticles by sol–gel method. United States. doi:10.1016/J.MATERRESBULL.2012.08.021.
Chen, Daimei, E-mail: chendaimei@cugb.edu.cn, Zhu, Qian, Lv, Zhijin, Deng, Xutao, Zhou, Fengsan, and Deng, Yanxi. Thu . "Microstructural and photocatatlytic properties of Eu-doped mesporous titanium dioxide nanopaticles by sol–gel method". United States. doi:10.1016/J.MATERRESBULL.2012.08.021.
@article{osti_22215546,
title = {Microstructural and photocatatlytic properties of Eu-doped mesporous titanium dioxide nanopaticles by sol–gel method},
author = {Chen, Daimei, E-mail: chendaimei@cugb.edu.cn and Zhu, Qian and Lv, Zhijin and Deng, Xutao and Zhou, Fengsan and Deng, Yanxi},
abstractNote = {Highlights: ► Eu-doped TiO{sub 2} was prepared using sol–gel method in the presence of pluronic P123. ► Eu atoms were doped into the lattice of anatase TiO{sub 2}. ► Eu doping can increase the band gap of TiO{sub 2}. ► Eu-doped TiO{sub 2} exhibited much higher photocatalytic activity than undoped TiO{sub 2}. -- Abstract: The europium-doped mesoporous titanium dioxide nanoparticles (Eu-doped TiO{sub 2}) with the different Eu/Ti rations were prepared using sol–gel method in the presence of tir-block copolymer pluronic P123. The as-prepared catalysts were characterized by low-angle and wide-angle X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), N{sub 2} absorption–desorption, ultraviolet visible light spectroscopy (UV–vis) and X-ray photoelectron spectroscopy (XPS), respectively. The XRD analysis indicated that all as-prepared TiO{sub 2} samples were mainly anatase phase and mesoporous. The crystallite sizes were in the range 6–11 nm, in consistent with the results obtained form TEM images. HRTEM and XPS showed that the europium atoms were doped into the lattice of anatase TiO{sub 2}. Eu doping can not only increase the stability of mesoporous TiO{sub 2}, but also make the absorption edge position move toward shorter wavelength. The photodecomposition experiments showed that the photodegradation activity of Eu-doped TiO{sub 2} was higher than that of undoped TiO{sub 2}.},
doi = {10.1016/J.MATERRESBULL.2012.08.021},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}