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Reverse microemulsion-mediated synthesis of SiO2-coated ZnO composite nanoparticles : multiple cores with tunable shell thickness
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posted on 2010-01-01, 00:00 authored by Jinfeng Wang, Takuya Tsuzuki, Lu Sun, Xungai WangMonodispersed SiO2-shell/ZnO-core composite nanospheres have been prepared in an oil-in-water microemulsion system. By using cyclohexane as the oil phase and Triton X-100 as the surfactant, composite nanospheres with high core loading levels and tunable shell thickness were obtained. Utilization of PVP capping agent on ZnO allowed the synthesis of composite nanospheres without forming any coreless SiO2 spheres or shell-less ZnO particles. The photoactivity of ZnO nanoparticles was greatly reduced by SiO2-coating, which enables their applications as durable, safe, and nonreactive UV blockers in plastics, coating, and other products.
History
Journal
ACS applied materials & interfacesVolume
2Issue
4Pagination
957 - 960Publisher
American Chemical SocietyLocation
Washington D.C.Publisher DOI
ISSN
1944-8244eISSN
1944-8252Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2010, American Chemical SocietyUsage metrics
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