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Solvothermal synthesis and luminescence of nearly monodisperse LnVO4 nanoparticles

Published online by Cambridge University Press:  26 April 2011

Xin Liang ,
Simin Kuang  and
Yadong Li
Xin Liang
Affiliation:
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
Simin Kuang
Affiliation:
Department of Chemistry, Tsinghua University, Beijing, 100084, People’s Republic of China
Yadong Li*
Affiliation:
Department of Chemistry, Tsinghua University, Beijing, 100084, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A facile ethylene glycol–based solvothermal method was developed for the synthesis of lanthanide orthovanadate LnVO4 (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Y, Er, Tm, Yb, Lu) nanoparticles with relatively uniform size and morphologies. The LnVO4 nanoparticles ranged from 100 to 500 nm and changed from spheres to ellipses and platelet–shaped particles depending on the ionic size. Radius of the Ln ions affected crystal structure. The particles with larger ions form monoclinic-type structure for LaVO4 and with smaller ions form zircon-type structure for LnVO4 (Ln = Pr-Yb). A nucleation and aggregates formation mechanism of LnVO4 nanomaterials was proposed to illustrate the crystal growth. The morphologies of LnVO4 nanoparticles could be turned by pH value and molar ratio of reactants. Spherical LaVO4 and PrVO4 nanoparticles were obtained at pH 6, whereas elliptical nanoparticles were obtained at pH 3. Eu3+-, Dy3+-, and Sm3+-doped zircon-type YVO4 nanoparticles exhibit strong luminescence typical of doped ions.

Keywords

NanostructureLuminescenceLanthanide
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 9 , 14 May 2011 , pp. 1168 - 1173
Copyright
Copyright © Materials Research Society 2011

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