| pubmed-article:19046924 | pubmed:abstractText | Eu(III) tungstates and molybdates nanotubes have been successfully synthesized by the solvothermal method using carbon nanotubes (CNTs) as removable templates. The products were characterized by X-ray diffraction spectroscopy, transmission electron microscopy, energy-dispersive X-ray spectrometry, thermogravimetric and differential thermalanalysis. It is demonstrated that CNTs are fully coated with an amorphous Eu(2)(MO(4))(3) (M=W, Mo) layer, which is about 10nm thick and almost continuous and uniform. After the Eu(2)(MO(4))(3) (M=W, Mo)/CNTs composites have been calcined at 700 degrees C, Eu(2)(MO(4))(3) (M=W, Mo) nanotubes are obtained by removing the CNTs templates. The diameter of the Eu(2)(MO(4))(3) (M=W, Mo) nanotubes is 40-60 nm, which is consistent with that of CNTs. The luminescence properties of the Eu(2)(MO(4))(3) (M=W, Mo) nanotubes calcined at various temperatures have been investigated. The result shows that the Eu(2)(MO(4))(3) (M=W, Mo) nanotubes obtained from the Eu(2)(MO(4))(3) (M=W, Mo)/CNTs composites calcined at 700 degrees C display a strong red emission peak at around 611 nm. | lld:pubmed |
