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NaGd(MoO(4))(2) nanocrystals with diverse morphologies: controlled synthesis, growth mechanism, photoluminescence and thermometric properties
Pure tetragonal phase, uniform and well-crystallized sodium gadolinium molybdate (NaGd(MoO(4))(2)) nanocrystals with diverse morphologies, e.g. nanocylinders, nanocubes and square nanoplates have been selectively synthesized via oleic acid-mediated hydrothermal method. The phase, structure, morpholo...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4979211/ https://www.ncbi.nlm.nih.gov/pubmed/27506629 http://dx.doi.org/10.1038/srep31366 |
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author | Li, Anming Xu, Dekang Lin, Hao Yang, Shenghong Shao, Yuanzhi Zhang, Yueli |
author_facet | Li, Anming Xu, Dekang Lin, Hao Yang, Shenghong Shao, Yuanzhi Zhang, Yueli |
author_sort | Li, Anming |
collection | PubMed |
description | Pure tetragonal phase, uniform and well-crystallized sodium gadolinium molybdate (NaGd(MoO(4))(2)) nanocrystals with diverse morphologies, e.g. nanocylinders, nanocubes and square nanoplates have been selectively synthesized via oleic acid-mediated hydrothermal method. The phase, structure, morphology and composition of the as-synthesized products are studied. Contents of both sodium molybdate and oleic acid of the precursor solutions are found to affect the morphologies of the products significantly, and oleic acid plays a key role in the morphology-controlled synthesis of NaGd(MoO(4))(2) nanocrystals with diverse morphologies. Growth mechanism of NaGd(MoO(4))(2) nanocrystals is proposed based on time-dependent morphology evolution and X-ray diffraction analysis. Morphology-dependent down-shifting photoluminescence properties of NaGd(MoO(4))(2): Eu(3+) nanocrystals, and upconversion photoluminescence properties of NaGd(MoO(4))(2): Yb(3+)/Er(3+) and Yb(3+)/Tm(3+) nanoplates are investigated in detail. Charge transfer band in the down-shifting excitation spectra shows a slight blue-shift, and the luminescence intensities and lifetimes of Eu(3+) are decreased gradually with the morphology of the nanocrystals varying from nanocubes to thin square nanoplates. Upconversion energy transfer mechanisms of NaGd(MoO(4))(2): Yb(3+)/Er(3+), Yb(3+)/Tm(3+) nanoplates are proposed based on the energy level scheme and power dependence of upconversion emissions. Thermometric properties of NaGd(MoO(4))(2): Yb(3+)/Er(3+) nanoplates are investigated, and the maximum sensitivity is determined to be 0.01333 K(−1) at 285 K. |
format | Online Article Text |
id | pubmed-4979211 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-49792112016-08-19 NaGd(MoO(4))(2) nanocrystals with diverse morphologies: controlled synthesis, growth mechanism, photoluminescence and thermometric properties Li, Anming Xu, Dekang Lin, Hao Yang, Shenghong Shao, Yuanzhi Zhang, Yueli Sci Rep Article Pure tetragonal phase, uniform and well-crystallized sodium gadolinium molybdate (NaGd(MoO(4))(2)) nanocrystals with diverse morphologies, e.g. nanocylinders, nanocubes and square nanoplates have been selectively synthesized via oleic acid-mediated hydrothermal method. The phase, structure, morphology and composition of the as-synthesized products are studied. Contents of both sodium molybdate and oleic acid of the precursor solutions are found to affect the morphologies of the products significantly, and oleic acid plays a key role in the morphology-controlled synthesis of NaGd(MoO(4))(2) nanocrystals with diverse morphologies. Growth mechanism of NaGd(MoO(4))(2) nanocrystals is proposed based on time-dependent morphology evolution and X-ray diffraction analysis. Morphology-dependent down-shifting photoluminescence properties of NaGd(MoO(4))(2): Eu(3+) nanocrystals, and upconversion photoluminescence properties of NaGd(MoO(4))(2): Yb(3+)/Er(3+) and Yb(3+)/Tm(3+) nanoplates are investigated in detail. Charge transfer band in the down-shifting excitation spectra shows a slight blue-shift, and the luminescence intensities and lifetimes of Eu(3+) are decreased gradually with the morphology of the nanocrystals varying from nanocubes to thin square nanoplates. Upconversion energy transfer mechanisms of NaGd(MoO(4))(2): Yb(3+)/Er(3+), Yb(3+)/Tm(3+) nanoplates are proposed based on the energy level scheme and power dependence of upconversion emissions. Thermometric properties of NaGd(MoO(4))(2): Yb(3+)/Er(3+) nanoplates are investigated, and the maximum sensitivity is determined to be 0.01333 K(−1) at 285 K. Nature Publishing Group 2016-08-10 /pmc/articles/PMC4979211/ /pubmed/27506629 http://dx.doi.org/10.1038/srep31366 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Li, Anming Xu, Dekang Lin, Hao Yang, Shenghong Shao, Yuanzhi Zhang, Yueli NaGd(MoO(4))(2) nanocrystals with diverse morphologies: controlled synthesis, growth mechanism, photoluminescence and thermometric properties |
title | NaGd(MoO(4))(2) nanocrystals with diverse morphologies: controlled synthesis, growth mechanism, photoluminescence and thermometric properties |
title_full | NaGd(MoO(4))(2) nanocrystals with diverse morphologies: controlled synthesis, growth mechanism, photoluminescence and thermometric properties |
title_fullStr | NaGd(MoO(4))(2) nanocrystals with diverse morphologies: controlled synthesis, growth mechanism, photoluminescence and thermometric properties |
title_full_unstemmed | NaGd(MoO(4))(2) nanocrystals with diverse morphologies: controlled synthesis, growth mechanism, photoluminescence and thermometric properties |
title_short | NaGd(MoO(4))(2) nanocrystals with diverse morphologies: controlled synthesis, growth mechanism, photoluminescence and thermometric properties |
title_sort | nagd(moo(4))(2) nanocrystals with diverse morphologies: controlled synthesis, growth mechanism, photoluminescence and thermometric properties |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4979211/ https://www.ncbi.nlm.nih.gov/pubmed/27506629 http://dx.doi.org/10.1038/srep31366 |
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