Electrospinning Fabrication Of Rare Earth Molybdate Low-dimensional Nanomaterials

Rare earth molybdates have become a class of rare earth luminescent materials matrix, due to its own chemical characteristics and physical properties. In recent years, research on rare earth molybdates nanomaterials is mainly focused on the preparation of rare earth molybdates nanoparticles and nanorods by hydrothermal method and sol-gel method. Currently, no reports on preparation of rare earth molybdates low-dimensional nanostructured materials, such as, nanofibers and nanobelts, are found in the references. In order to study their properties, preparation technique of rare earth molybdates nanofibers and nanobelts is urgently needed. Electrospinning is one of the effective methods to fabricate rare earth molybdates one-dimentional nanomaterials due to its simple operation and good repeatability. Therefore, it is a meaningful subject of study to prepare rare earth molybdates low-dimensional materials.For the first time, NaGd(Mo04)2, NaGd1-x(MoO4)2:xEu3+, NaGd1-x(MoO4)2:xTb3+NaGd1-x(MoO4)2:xNd3+, NaY(MoO4)2and NaY1-x(MoO4)2:xEu3+nanofibers and nanobelts were prepared via electrospinning method, and the luminescence properties of these nanomaterials were systematically discussed through doping various amount of rare earth activators.The samples were characterized by X-ray diffractometry (XRD), field emission scanning electron microscope (FESEM) and fluorescence spectroscopy. The results showed that the prepared rare earth molybdates nanomaterials were tetragonal in structure. The average diameter of nanofibers was150nm-190nm, the average bandwidth of the nanobelts was3-7μm, and the thickness was90nm-110nm. The strongest emission peak of NaGd1-x(MoO4)2:xEu3+and NaY1-x(MoO4)2:xEu3+nanomaterials was attributed to5Doâ†'7F2transition of Eu3+, the optimum concentration of Eu3+was5%. The strongest emission peak of NaGd1-x(MoO4)2:xTb3+nanomaterials was originated from5D4â†'7F5transition of Tb3+, and the optimum concentration of Tb3+was3%. The strongest emission peak of NaGd1-x(MoO4)2:xNd3+nanomaterials was ascribed to7F3/2â†'4I11/2transition of Nd3+, and the optimum concentration of Nd3+was5%. The research findings lay the foundation for the further study of propertions and applications of rare earth molybdates one-dimensional materials.