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Title: Mesoporous hollow Zn{sub 2}SiO{sub 4}:Mn{sup 2+} nanospheres: The study of photoluminescence and adsorption properties

Graphical abstract: Mesoporous hollow structure of Zn{sub 2}SiO{sub 4}:Mn{sup 2+} phosphors. - Highlights: • Mesoporous hollow Zn{sub 2}SiO{sub 4}:Mn{sup 2+} nanospheres are prepared via the layer-by-layer technique. • The Zn{sub 2}SiO{sub 4}:Mn{sup 2+} nanospheres exhibit better adsorption capabilities of Pb{sup 2+}, Fe{sup 3+} than Cd{sup 2+}. • The Zn{sub 2}SiO{sub 4}:Mn{sup 2+} nanospheres exhibit strong green emission around 524 nm. • With the increase of doped Mn{sup 2+} concentration, the emission peak shows a red-shift. - Abstract: Mesoporous hollow Zn{sub 2}SiO{sub 4}:Mn{sup 2+} nanospheres were prepared via the layer-by-layer technique using CTAB as surfactant. The structures/microstructures and morphologies of the as-synthesized phosphors were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope and N{sub 2} adsorption–desorption porosimetry. The adsorption capacity to remove toxic metal ions in water was tested and the results showed that the Zn{sub 2}SiO{sub 4}:Mn{sup 2+} nanospheres exhibited better adsorption capabilities of Pb{sup 2+}, Fe{sup 3+} than Cd{sup 2+}. Moreover, the as-obtained hollow Zn{sub 2}SiO{sub 4}:Mn{sup 2+} phosphors exhibited strong green emission around 524 nm at room temperature. When the atomic ratio of Zn to Mn was 97:3, the emission intensity of Zn{sub 2}SiO{sub 4}:Mn{sup 2+} phosphor was about 1.2 times that of commercial phosphors. Furthermore,more » with the increase of doped Mn{sup 2+} concentration, the emission peak showed a red-shift.« less
Authors:
 [1] ;  [2] ;  [1] ;  [2] ; ; ;  [1] ;  [3] ;  [1] ;  [4]
  1. Key laboratory of Information Materials and Device, School of Physics and Materials Science, Anhui University, Hefei 230039 (China)
  2. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026 (China)
  3. Engineering Technology Research Center of Magnetic Materials, Hefei 230039 (China)
  4. (China)
Publication Date:
OSTI Identifier:
22420742
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 61; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ADSORPTION; CADMIUM IONS; CONCENTRATION RATIO; DESORPTION; DOPED MATERIALS; IRON IONS; LEAD IONS; MANGANESE IONS; MICROSTRUCTURE; NANOSTRUCTURES; OPTICAL PROPERTIES; PHOSPHORS; PHOTOLUMINESCENCE; RED SHIFT; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; TEMPERATURE RANGE 0273-0400 K; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; ZINC SILICATES