MOLTEN SALT SYNTHESIS OF La2O2SO4 NANOSHEETS AND THEIR LUMINESCENT PROPERTIES WITH Eu3+ DOPING

Author:

HUANG XIAO-ZHU1,LIU ZHEN1,YANG YIYI1,TIAN YANG1

Affiliation:

1. Department of Chemistry, Capital Normal University, Beijing 100048, P. R. China

Abstract

Two-dimensional nanosheets of lanthanum oxysulfates ( La2O2SO4 ) are prepared for the first time by a facile, effective molten salt synthesis route at a low temperature (400°C). Transmission electron microscopy (TEM) shows that the nanosheets are 100 nm to 200 nm thick and several micrometers in in-plane size. The intrinsic crystallography of the nanosheets is characterized by X-ray diffraction, high-resolution TEM, and selected area electron diffraction. The composition of the sample is studied by energy dispersive X-ray spectroscopy. The formation process of the nanosheets in molten salts is also investigated. The luminescence properties of the obtained La2O2SO4 nanosheets are investigated by doping with Eu3+ at different concentrations. The nanosheets are found to exhibit good monochromaticity with high color saturation.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Materials Science

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