期刊
GELS
卷 8, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/gels8050286
关键词
tartaric acid; europium; silica nanowires; sol-gel; photoluminescence
资金
- Scientific and Technological Research Project for Universities of Inner Mongolia Autonomous Region [NJZY21417]
- Opening Research Funds Projects of the Key Laboratory of Inner Mongolia Autonomous Region of Chemistry of Natural Product and Functional Molecular Synthesis, Inner Mongolia Minzu University [MDK2016012]
Europium trivalent ion (Eu3+)-doped silica nanowires were prepared and the positioning of Eu3+ in the silicon dioxide nanowire matrix was investigated. The results indicate that Eu3+ was successfully doped into amorphous silica and exhibited high photoluminescent emission in the silica matrix.
Europium trivalent ion (Eu3+)-doped silica nanowires were prepared, and the positioning of Eu3+ in the silicon dioxide nanowire matrix was researched. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction analysis (XRD) and energy-dispersive X-ray spectroscope analysis (EDX) were used to characterize the product's morphology and structure. The representation of Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectroscopy (XPS) were indicative of the presence of a covalent Eu-O-Si bond. The results suggest that Eu3+ was successfully doped into amorphous silica. Furthermore, a sol-gel inorganic-organic co-assembly mechanism model was proposed to illuminate the formation of the rare-earth ion-doped nanowires. In addition, photoluminescent emission of europium ions in a silica matrix was further discussed. It was demonstrated that a 10% content of Eu3+ resulted in a quenching effect and after annealing at 650 degrees C, the europium ions in the nanowires had a high luminescence intensity due to the silica network structure.
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