Microwave Synthesis and Photoluminescence Properties of BaWO&amp;lt;sub&amp;gt;4&amp;lt;/sub&amp;gt; of Homogeneous Double Cone Structure

Dengfeng Wu,Xuehong Liao,Shihao Luo,Shuibin Yang

doi:10.4236/msce.2017.54007

Abstract

Barium tungstate of homogeneous double cone structure was synthesized by microwave synthesis method with sodium tungstate, barium nitrate as raw materials, polyethylene glycol (PEG2000) as surfactant. The as-prepared sample was characterized by X-ray diffraction (XRD), scanning electron micrograph (SEM) and photoluminescence spectrum (PL). The XRD Pattern showed that the samples are scheelite structure of BaWO4. The SEM image showed that the majority of as-prepared sample is a double cone structure, and some particles are attached to it. The length of most of the double cone is 10 μm. PL spectra showed that as-prepared sample had strong luminescence properties, and it had purity green emission at 495 nm and 521 nm. The effects of different surface active agent on the luminescence properties were studied. The results showed that when PEG2000 is as surfactant, the luminescence intensity of as-prepared sample was maximum.

Highlights

Tungstate is a kind of important inorganic functional material
Barium tungstate of homogeneous double cone structure was synthesized by microwave synthesis method with sodium tungstate, barium nitrate as raw materials, polyethylene glycol (PEG2000) as surfactant
The as-prepared sample was characterized by X-ray diffraction (XRD), scanning electron micrograph (SEM) and photoluminescence spectrum (PL)

Summary

Introduction

Tungstate is a kind of important inorganic functional material. AWO4 (A = Ba, Sr, Ca, Pb) tetragonal scheelite-type crystals of divalent metal ion tungstate have been of immense interest because of their remarkable properties such as luminescence, nonlinear optical activity, photocatalysis, and scintillation [1]-[16]. Barium tungstate of homogeneous double cone structure was synthesized by microwave synthesis method with sodium tungstate, barium nitrate as raw materials, polyethylene glycol (PEG2000) as surfactant. The as-prepared sample was characterized by X-ray diffraction (XRD), scanning electron micrograph (SEM) and photoluminescence spectrum (PL). The XRD Pattern showed that the samples are scheelite structure of BaWO4.

Results

Conclusion