Zhou W.-M.,Fujian Normal University |
Zhou W.-M.,Fujian Key Laboratory of Pollution Control & Resource Reuse |
Chen Q.-H.,Fujian Normal University |
Chen Q.-H.,Fujian Key Laboratory of Pollution Control & Resource Reuse |
And 7 more authors.
Wuji Cailiao Xuebao/Journal of Inorganic Materials | Year: 2014
Double-layer of titanium dioxide and Pr-doped calcium hydroxide were coated on the surface of mica by liquid phase deposition, and followed by calcination to form the Pr-doped calcium titanates fluorescent layer. The resultant CaTiO3:Pr3+/TiO2-mica fluorescent pearlescent pigments were characterized by photoluminescence excitation (PLE) and emission (PL), automatic colorimeter (AC), X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM), respectively. The fluorescent pearlescent pigments obtained at the calcium oxide cladding ratios of 5.3%, the praseodymium/calcium nitrate molar concentration of 0.2%, and the calcinations temperature of 900℃, show good pearl property with homogeneous, dense and smooth surface, and relatively high fluorescence intensity. The excitation spectrum of these fluorescent pearlescent pigments consists of three bands at 264, 304 and 380 nm. The maximum emission wavelength is found to be a red light of 613 nm, corresponding to the transition for 1D2→3H4. ©, 2014, Science Press. All right reserved. Source