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Citation: CUI Hong-Tao, HONG Guang-Yan. Coating of Y₂O₃: Eu³⁺ Particles with Polystyrene and Its Characterization[J]. Chinese Journal of Applied Chemistry, ;2001, 18(3): 208-211. shu

Coating of Y₂O₃: Eu³⁺ Particles with Polystyrene and Its Characterization

1.
Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received Date: 11 July 2000
Available Online: 12 December 2000

The core-shell Y₂O₃:Eu³⁺/polystyrene particles were prepared by surface modification with citric acid,followed by emulsion polymerization of styrene.For the core-shell particles the carbonyl stretching vibration band shifted to low wavenumber in FTIR spectrum and the binding energy of Y_{3d_5/2} upfield shifted to high energy band in XPS spectrum,showing that the citric acid is bonded to the particle surface through chemical binding by the mechanism of adsorption layer medium.The hydrophilic surface of Y₂O₃:Eu²⁺ particles becomes amphiphilic by citric acid modification that makes the styrene adsorbed on particle surface to form emulsion structure with inorganic core inside.EDS spectra showed a uniform polystyrene coating on Y₂O₃:Eu³⁺ surface.
- Y₂O₃:Eu³⁺,
- polystyrene,
- coating,
- surface modification
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Coating of Y₂O₃: Eu³⁺ Particles with Polystyrene and Its Characterization