title: Stable photoluminescent ZnO@Cd(OH)2 core-shell nanoparticles synthesized via ultrasonication-assisted sol-gel method.
abstract: Core-shell structured ZnO@Cd(OH)(2) nanoparticles with stable and improved luminescence have been prepared successfully via a facile ultrasonication-assisted sol-gel method. Their composition and structure have been confirmed by high resolution transmission electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and infrared spectra. The size of the nanoparticles decreases gradually along with the increase in the shell thickness, indicating that Cd(OH)(2) shells can hider ZnO cores growth and aggregation effectively. The as-prepared core-shell nanoparticles can be stored at room temperature for several weeks without luminescence efficiency reduction, and they are quite stable at elevated temperatures or in moderate alkaline solutions due to the protection of the Cd(OH)(2) shell.
authors.affiliation: Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 220 Handan Road, Shanghai 200433, PR China.
authors.forename: Jue-Fei
authors.initials: JF
authors.lastname: Zhou
authors.forename: Jie
authors.initials: J
authors.lastname: Ao
authors.forename: Yong-Yao
authors.initials: YY
authors.lastname: Xia
authors.forename: Huan-Ming
authors.initials: HM
authors.lastname: Xiong
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D005782:Gels / Q000737:chemistry; D006878:Hydroxides / Q000737:chemistry*; D049449:Luminescence; D008163:Luminescent Measurements; D053758:Nanoparticles / Q000737:chemistry*; D055668:Photochemical Processes; D014465:Ultrasonics; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D005782:Gels; D006878:Hydroxides; D015034:Zinc Oxide