Rapid microwave-enhanced hydrothermal synthesis and shape evolution of uniform NaGdF 4:Yb, Er (Tm/Ho) nanocrystals with upconversion and paramagnetic properties

Dong Wang; Lei Ren; Xi Zhou; Xiao Zhong Wang; Jun Zhou; Yu Han; Ning Kang

doi:10.1088/0957-4484/23/22/225705

Rapid microwave-enhanced hydrothermal synthesis and shape evolution of uniform NaGdF ₄:Yb, Er (Tm/Ho) nanocrystals with upconversion and paramagnetic properties

Dong Wang^*, Lei Ren, Xi Zhou, Xiao Zhong Wang, Jun Zhou, Yu Han, Ning Kang

^*Corresponding author for this work

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

An efficient microwave-enhanced hydrothermal synthesis strategy was developed for the rapid synthesis of β-NaGdF ₄:Ln ³⁺ (Ln=Yb, Er/Tm/Ho) nanocrystals (NCs) with multicolour upconversion luminescence and paramagnetic properties. It has been found that the uniform β-NaGdF ₄:Ln ³⁺ NCs could be rapidly formed within a few minutes at 160°C and the shape of the NCs can be manipulated from uniform rod-like to spherical just by tuning the initial reactants concentration. In comparison to conventional hydrothermal routes, a burst homogeneous nucleation and higher growth rate as well as enhanced dimensional homogeneity of the NaGdF ₄:Ln ³⁺ was achieved in microwave synthesis. A microwave-heating-based classical crystallization mode and surfactant-assisted anisotropic growth mechanism were proposed for the formation of β-NaGdF ₄:Ln ³⁺ NCs.

Original language	English (US)
Article number	225705
Journal	Nanotechnology
Volume	23
Issue number	22
DOIs	https://doi.org/10.1088/0957-4484/23/22/225705
State	Published - Jun 8 2012

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

Access to Document

10.1088/0957-4484/23/22/225705

Cite this

@article{c5a7d08b9533464d8d5df7f15358e13e,

title = "Rapid microwave-enhanced hydrothermal synthesis and shape evolution of uniform NaGdF 4:Yb, Er (Tm/Ho) nanocrystals with upconversion and paramagnetic properties",

abstract = "An efficient microwave-enhanced hydrothermal synthesis strategy was developed for the rapid synthesis of β-NaGdF 4:Ln 3+ (Ln=Yb, Er/Tm/Ho) nanocrystals (NCs) with multicolour upconversion luminescence and paramagnetic properties. It has been found that the uniform β-NaGdF 4:Ln 3+ NCs could be rapidly formed within a few minutes at 160°C and the shape of the NCs can be manipulated from uniform rod-like to spherical just by tuning the initial reactants concentration. In comparison to conventional hydrothermal routes, a burst homogeneous nucleation and higher growth rate as well as enhanced dimensional homogeneity of the NaGdF 4:Ln 3+ was achieved in microwave synthesis. A microwave-heating-based classical crystallization mode and surfactant-assisted anisotropic growth mechanism were proposed for the formation of β-NaGdF 4:Ln 3+ NCs.",

author = "Dong Wang and Lei Ren and Xi Zhou and Wang, {Xiao Zhong} and Jun Zhou and Yu Han and Ning Kang",

year = "2012",

month = jun,

day = "8",

doi = "10.1088/0957-4484/23/22/225705",

language = "English (US)",

volume = "23",

journal = "Nanotechnology",

issn = "0957-4484",

publisher = "IOP Publishing Ltd.",

number = "22",

}

TY - JOUR

T1 - Rapid microwave-enhanced hydrothermal synthesis and shape evolution of uniform NaGdF 4:Yb, Er (Tm/Ho) nanocrystals with upconversion and paramagnetic properties

AU - Wang, Dong

AU - Ren, Lei

AU - Zhou, Xi

AU - Wang, Xiao Zhong

AU - Zhou, Jun

AU - Han, Yu

AU - Kang, Ning

PY - 2012/6/8

Y1 - 2012/6/8

N2 - An efficient microwave-enhanced hydrothermal synthesis strategy was developed for the rapid synthesis of β-NaGdF 4:Ln 3+ (Ln=Yb, Er/Tm/Ho) nanocrystals (NCs) with multicolour upconversion luminescence and paramagnetic properties. It has been found that the uniform β-NaGdF 4:Ln 3+ NCs could be rapidly formed within a few minutes at 160°C and the shape of the NCs can be manipulated from uniform rod-like to spherical just by tuning the initial reactants concentration. In comparison to conventional hydrothermal routes, a burst homogeneous nucleation and higher growth rate as well as enhanced dimensional homogeneity of the NaGdF 4:Ln 3+ was achieved in microwave synthesis. A microwave-heating-based classical crystallization mode and surfactant-assisted anisotropic growth mechanism were proposed for the formation of β-NaGdF 4:Ln 3+ NCs.

AB - An efficient microwave-enhanced hydrothermal synthesis strategy was developed for the rapid synthesis of β-NaGdF 4:Ln 3+ (Ln=Yb, Er/Tm/Ho) nanocrystals (NCs) with multicolour upconversion luminescence and paramagnetic properties. It has been found that the uniform β-NaGdF 4:Ln 3+ NCs could be rapidly formed within a few minutes at 160°C and the shape of the NCs can be manipulated from uniform rod-like to spherical just by tuning the initial reactants concentration. In comparison to conventional hydrothermal routes, a burst homogeneous nucleation and higher growth rate as well as enhanced dimensional homogeneity of the NaGdF 4:Ln 3+ was achieved in microwave synthesis. A microwave-heating-based classical crystallization mode and surfactant-assisted anisotropic growth mechanism were proposed for the formation of β-NaGdF 4:Ln 3+ NCs.

UR - http://www.scopus.com/inward/record.url?scp=84861085238&partnerID=8YFLogxK

U2 - 10.1088/0957-4484/23/22/225705

DO - 10.1088/0957-4484/23/22/225705

M3 - Article

AN - SCOPUS:84861085238

SN - 0957-4484

VL - 23

JO - Nanotechnology

JF - Nanotechnology

IS - 22

M1 - 225705

ER -

Rapid microwave-enhanced hydrothermal synthesis and shape evolution of uniform NaGdF ₄:Yb, Er (Tm/Ho) nanocrystals with upconversion and paramagnetic properties

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this