Facile synthesis and luminescence properties of europium(III)-doped silica nanotubes
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Photoluminescent nanomaterials had emerged as an amazing field in a wide range of applications during the past few decades. In this article, fibrous europium tartrates and photoluminescent silica nanotubes were conveniently synthesized by using sol–gel method, in which europium ions entered silica matrix. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction analysis, fourier transform infrared spectra, energy-dispersive X-ray spectroscopy and photoluminescence (PL) spectra analysis were used to characterize the growth, structure, morphology and optical property of the products. The results indicated that europium tartrates nanofibers as a template can transform tetraethylorthosilicate into silica nanotubes effectively. Meanwhile, europium(III) was transferred from the fibers to the tubes successfully. A hard template mechanism was proposed to explain the formation process of europium(III)-doped silica nanotubes. Moreover, different morphologies of silica-based nanomaterials were obtained due to varying NH4OH addition or stirring time. PL spectra from nanofiber and nanotube show a typical emission of europium(III), and 13 % is the quenching concentration of europium(III) in silica matrix for this system. The novel silica nanotubes can be applied potentially in optical and biological areas.
KeywordsTartaric acid Template Europium Eu3+-doped silica nanotubes Sol–gel Photoluminescence
This work was supported by the National Natural Science Foundation of China (Grant Nos. 51272085 and 21171066), the key technology and equipment of efficient utilization of oil shale resources (No: OSR-05) and the Opening Research Funds Projects of the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry and College of Chemistry, Jilin University (2013–27).
- 25.Lin C, Song Y, Gao F, Zhang H, Sheng Y, Zheng K, Shi Z, Xu X, Zou H (2014) Synthesis and luminescence properties of Eu3+-doped silica nanorods based on the sol–gel process. J Sol–Gel Sci Technol 69(3):536–543Google Scholar