Chemical Research in Chinese Universities ›› 2015, Vol. 31 ›› Issue (2): 175-178.doi: 10.1007/s40242-015-4448-0

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Rapid Microwave-assisted Hydrothermal Synthesis of SrWO4:Eu3+ Nanowires and Their Luminescence Properties

LÜ Yang1, YANG Min1, YANG Bin2, LIU Wei1, ZHANG Hongdan1, ZHAO Xudong1, LIU Xiaoyang1   

  1. 1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. China;
    2. School of Materials Science and Engineering, Anhui University of Technology, Maanshan 243002, P. R. China
  • Received:2014-11-27 Revised:2015-02-02 Online:2015-04-01 Published:2015-02-12
  • Contact: ZHAO Xudong, LIU Xiaoyang E-mail:liuxy@jlu.edu.cn;xdzhao@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.21271082, 21371068) and the China Postdoctoral Science Foundation(No.801141080411).

Abstract:

SrWO4:Eu3+ nanowires were synthesized at 160 ℃ within 10 min via a microwave-assisted hydrothermal method. In examining the influences of synthesis temperature and reaction time on the morphology of nanowires, it was found that any temperatures and reaction time except 160 ℃ and 10 min gave rise to poorer morphologies under otherwise equal conditions. The synthesized nanowires were characterized by means of X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), high-resolution transmission electron microscopy(HRTEM), energy dispersive X-ray(EDX) and Raman spectrometry, respectively. The results suggest that the samples are homogenous and dispersive single phase nanowires. The photoluminescence properties of the nanowires were determined with a spectrofluorometer. Two obviously sharp peaks at 395 and 464 nm and a broad peak centered at 290 nm were found in their excitation spectrum. Under excitation at 395 and 464 nm , the 5D07F2 transition is the dominant process which means Eu3+ ion is located at a low symmetry site, while the 5D07F1 transition dominates under the excitation at 290 nm, showing a highly symmetric field around the Eu3+ ion, which indicates the presence of the two local Eu3+ environments.

Key words: SrWO4:Eu3+ nanowire, Microwave-assisted hydrothermal method, Luminescence property