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Article

Rare Earth Hydroxide as a Precursor for Controlled Fabrication of Uniform β-NaYF4 Nanoparticles: A Novel, Low Cost, and Facile Method

by
Lili Xu
1,
Man Wang
1,
Qing Chen
1,
Jiajia Yang
1,
Wubin Zheng
1,
Guanglei Lv
1,*,
Zewei Quan
2,* and
Chunxia Li
1,*
1
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
2
Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
*
Authors to whom correspondence should be addressed.
Molecules 2019, 24(2), 357; https://doi.org/10.3390/molecules24020357
Submission received: 31 December 2018 / Revised: 16 January 2019 / Accepted: 17 January 2019 / Published: 19 January 2019
(This article belongs to the Special Issue Smart and Functional Polymers)
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Abstract

In recent years, rare earth doped upconversion nanocrystals have been widely used in different fields owing to their unique merits. Although rare earth chlorides and trifluoroacetates are commonly used precursors for the synthesis of nanocrystals, they have certain disadvantages. For example, rare earth chlorides are expensive and rare earth trifluoroacetates produce toxic gases during the reaction. To overcome these drawbacks, we use the less expensive rare earth hydroxide as a precursor to synthesize β-NaYF4 nanoparticles with multiform shapes and sizes. Small-sized nanocrystals (15 nm) can be obtained by precisely controlling the synthesis conditions. Compared with the previous methods, the current method is more facile and has lower cost. In addition, the defects of the nanocrystal surface are reduced through constructing core–shell structures, resulting in enhanced upconversion luminescence intensity.
Keywords: β-NaYF4; rare earth upconversion nanoparticles; core–shell structure β-NaYF4; rare earth upconversion nanoparticles; core–shell structure
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MDPI and ACS Style

Xu, L.; Wang, M.; Chen, Q.; Yang, J.; Zheng, W.; Lv, G.; Quan, Z.; Li, C. Rare Earth Hydroxide as a Precursor for Controlled Fabrication of Uniform β-NaYF4 Nanoparticles: A Novel, Low Cost, and Facile Method. Molecules 2019, 24, 357. https://doi.org/10.3390/molecules24020357

AMA Style

Xu L, Wang M, Chen Q, Yang J, Zheng W, Lv G, Quan Z, Li C. Rare Earth Hydroxide as a Precursor for Controlled Fabrication of Uniform β-NaYF4 Nanoparticles: A Novel, Low Cost, and Facile Method. Molecules. 2019; 24(2):357. https://doi.org/10.3390/molecules24020357

Chicago/Turabian Style

Xu, Lili, Man Wang, Qing Chen, Jiajia Yang, Wubin Zheng, Guanglei Lv, Zewei Quan, and Chunxia Li. 2019. "Rare Earth Hydroxide as a Precursor for Controlled Fabrication of Uniform β-NaYF4 Nanoparticles: A Novel, Low Cost, and Facile Method" Molecules 24, no. 2: 357. https://doi.org/10.3390/molecules24020357

APA Style

Xu, L., Wang, M., Chen, Q., Yang, J., Zheng, W., Lv, G., Quan, Z., & Li, C. (2019). Rare Earth Hydroxide as a Precursor for Controlled Fabrication of Uniform β-NaYF4 Nanoparticles: A Novel, Low Cost, and Facile Method. Molecules, 24(2), 357. https://doi.org/10.3390/molecules24020357

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