title: Pure rhombohedral Bi1-x EuxPO4 nano-/micro-structures: fast synthesis, shape evolution and luminescence properties.
abstract: BiPO4 and Eu-doped BiPO4 crystals were synthesized via a simple precipitation route at room temperature, employing Bi(NO3)3 and (NH4)2HPO4 as the reactants, Eu2O3 as the dopant and citric acid as a template. X-ray powder diffraction analyses showed that pure rhombohedral BiPO4 form was obtained, and was the preferential orientation growth of the crystal. Field emission scanning electron microscope observations showed that the concentration of Bi(3+) obviously changed the products' morphologies from nanosphere, hollow sphere to hexagonal prism. The acidity of the solution and the contents of citric acid and Eu(3+) ion tailored the size of the final crystals. Effects of concentration of Eu(3+) ion on the luminescence emission intensity were also investigated.
authors.affiliation: Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, People's Republic of China.
authors.forename: Dongyan
authors.initials: D
authors.lastname: Yu
authors.affiliation: Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, People's Republic of China.|Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, People's Republic of China.
authors.forename: Yujun
authors.initials: Y
authors.lastname: Liang
authors.affiliation: Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, People's Republic of China.
authors.forename: Mengfei
authors.initials: M
authors.lastname: Zhang
authors.affiliation: Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, People's Republic of China.|Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, People's Republic of China.
authors.forename: Guogang
authors.initials: G
authors.lastname: Li
authors.affiliation: Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, People's Republic of China.|Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, People's Republic of China.
authors.forename: Chunjie
authors.initials: C
authors.lastname: Yan
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D049329:Nanostructures / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*
chemical_list: D010710:Phosphates; D005063:Europium; D001729:Bismuth
keywords: BiPO4; Luminescence; Morphology; Phosphor; Precipitation method