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Novel Hierarchical YBO3 :Eu3+ Nanocrystals Synthesized by Folic Acid Assisted Hydrothermal Process

Published online by Cambridge University Press:  09 December 2019

Xianj. Xing ,
Shan Li ,
Yuq. Song ,
Yingz. Ge ,
Xuef. Zhang ,
Wen Jiang  and
Xianwen. Zhang
Xianj. Xing
Affiliation:
School of Mechanical Engineering , Hefei University of Technology, Hefei, Anhui 230009, China
Shan Li
Affiliation:
School of Chemistry and Chemical Engineering , Hefei University of Technology , Hefei, Anhui 230009, China
Yuq. Song
Affiliation:
School of Chemistry and Chemical Engineering , Hefei University of Technology , Hefei, Anhui 230009, China
Yingz. Ge
Affiliation:
School of Automobile and Transportation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
Xuef. Zhang
Affiliation:
School of Mechanical Engineering , Hefei University of Technology, Hefei, Anhui 230009, China
Wen Jiang
Affiliation:
School of Food and Biological Engineering ,Hefei University of Technology, Hefei, Anhui 230009, China
Xianwen. Zhang*
Affiliation:
School of Automobile and Transportation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
*
*(Email: [email protected])
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Abstract

YBO3:Eu3+ crystals with flower-like hierarchitecture are readily synthesized through a folic acid assisted hydrothermal process using polyborate precursors in the aqueous solution. It was found that the pH value , borate/yittrium ratio and the mass of folic acid take effects on the morphology and photoluminescence emission intensity of YBO3:Eu3+ crystals. The product with the small flower-like hierarchitecture was obtained under the conditions of pH value at 9, borate/yittrium ratio at 2 and the mass of folic acid at 0.44 g, showing the strongest photoluminescence intensity. The growth process of the YBO3:Eu3+ flowers and microflowers was invesitgated based on the time-dependent experiments, which showed that the growth mechanism of the flower-like hierarchitecture follows an in situ growth rather than self-assembly process as reported previously. Such a hydrothermal route using folic acid as a capping agent may provide a green and effective method for fabricating useful and complex 3D architectures of LEDs phosphors.

Keywords

hydrothermalchemical reactioncrystal growthamorphous
Type
Articles
Information
MRS Advances , Volume 5 , Issue 31-32: Fabrication of Functional Materials and Nanomaterials , 2020 , pp. 1661 - 1670
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Copyright
Copyright © Materials Research Society 2019

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