高等学校化学研究 ›› 2015, Vol. 31 ›› Issue (2): 175-178.doi: 10.1007/s40242-015-4448-0
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. 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
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. 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
摘要：
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 5D0→7F2 transition is the dominant process which means Eu3+ ion is located at a low symmetry site, while the 5D0→7F1 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.