The Progress of TiO𝟐 Nanocrystals Doped with Rare Earth Ions

The Progress of TiO𝟐 Nanocrystals Doped with Rare Earth Ions

In the past decades, TiO2 nanocrystals (NCs) have been widely studied in the fields of photoelectric devices, optical communication, and environment for their stability in aqueous solution, being nontoxic, cheapness, and so on. Among the three crystalline phases of TiO2, anatase TiO2 NCs are the bes...

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Main Authors: Hai Liu, Lixin Yu, Weifan Chen, Yingyi Li
Format: Article
Language:English
Published: Hindawi Limited 2012-01-01
Series:Journal of Nanomaterials
Online Access:http://dx.doi.org/10.1155/2012/235879
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spelling doaj-5fd67b1de09445f58335f8727ac1575f2020-11-24T22:38:49ZengHindawi LimitedJournal of Nanomaterials1687-41101687-41292012-01-01201210.1155/2012/235879235879The Progress of TiO𝟐 Nanocrystals Doped with Rare Earth IonsHai Liu0Lixin Yu1Weifan Chen2Yingyi Li3Department of Materials Science and Engineering, Nanchang University, Nanchang 330031, ChinaDepartment of Materials Science and Engineering, Nanchang University, Nanchang 330031, ChinaDepartment of Materials Science and Engineering, Nanchang University, Nanchang 330031, ChinaDepartment of Materials Science and Engineering, Nanchang University, Nanchang 330031, ChinaIn the past decades, TiO2 nanocrystals (NCs) have been widely studied in the fields of photoelectric devices, optical communication, and environment for their stability in aqueous solution, being nontoxic, cheapness, and so on. Among the three crystalline phases of TiO2, anatase TiO2 NCs are the best crystallized phase of solar energy conversion. However, the disadvantages of high band gap energy (3.2 ev) and the long lifetime of photogenerated electrons and holes limit its photocatalytic activity severely. Therefore, TiO2 NCs doped with metal ions is available way to inhibit the transformation from anatase to rutile. Besides, these metal ions will concentrate on the surface of TiO2 NCs. All above can enhance the photoactivity of TiO2 NCs. In this paper, we mainly outlined the different characterization brought about in the aspect of nanooptics and photocatalytics due to metal ions added in. Also, the paper mainly concentrated on the progress of TiO2 NCs doped with rare earth (RE) ions.http://dx.doi.org/10.1155/2012/235879
collection DOAJ
language English
format Article
sources DOAJ
author Hai Liu
Lixin Yu
Weifan Chen
Yingyi Li
spellingShingle Hai Liu
Lixin Yu
Weifan Chen
Yingyi Li
The Progress of TiO𝟐 Nanocrystals Doped with Rare Earth Ions
Journal of Nanomaterials
author_facet Hai Liu
Lixin Yu
Weifan Chen
Yingyi Li
author_sort Hai Liu
title The Progress of TiO𝟐 Nanocrystals Doped with Rare Earth Ions
title_short The Progress of TiO𝟐 Nanocrystals Doped with Rare Earth Ions
title_full The Progress of TiO𝟐 Nanocrystals Doped with Rare Earth Ions
title_fullStr The Progress of TiO𝟐 Nanocrystals Doped with Rare Earth Ions
title_full_unstemmed The Progress of TiO𝟐 Nanocrystals Doped with Rare Earth Ions
title_sort progress of tio𝟐 nanocrystals doped with rare earth ions
publisher Hindawi Limited
series Journal of Nanomaterials
issn 1687-4110
1687-4129
publishDate 2012-01-01
description In the past decades, TiO2 nanocrystals (NCs) have been widely studied in the fields of photoelectric devices, optical communication, and environment for their stability in aqueous solution, being nontoxic, cheapness, and so on. Among the three crystalline phases of TiO2, anatase TiO2 NCs are the best crystallized phase of solar energy conversion. However, the disadvantages of high band gap energy (3.2 ev) and the long lifetime of photogenerated electrons and holes limit its photocatalytic activity severely. Therefore, TiO2 NCs doped with metal ions is available way to inhibit the transformation from anatase to rutile. Besides, these metal ions will concentrate on the surface of TiO2 NCs. All above can enhance the photoactivity of TiO2 NCs. In this paper, we mainly outlined the different characterization brought about in the aspect of nanooptics and photocatalytics due to metal ions added in. Also, the paper mainly concentrated on the progress of TiO2 NCs doped with rare earth (RE) ions.
url http://dx.doi.org/10.1155/2012/235879
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