Reverse Microemulsion-Mediated Synthesis of SiO2-Coated ZnO Composite Nanoparticles: Multiple Cores with Tunable Shell Thickness | Zendy

Jinfeng Wang | Zendy; Takuya Tsuzuki | Zendy; Lu Sun | Zendy; Xungai Wang | Zendy

Open Access

Reverse Microemulsion-Mediated Synthesis of SiO₂-Coated ZnO Composite Nanoparticles: Multiple Cores with Tunable Shell Thickness

Author(s) -

Jinfeng Wang,

Takuya Tsuzuki,

Lu Sun,

Xungai Wang

Publication year - 2010

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/am100051z

Subject(s) - materials science , microemulsion , composite number , coating , nanoparticle , shell (structure) , cyclohexane , pulmonary surfactant , chemical engineering , composite material , phase (matter) , nanotechnology , organic chemistry , chemistry , engineering

Monodispersed SiO(2)-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 SiO(2) spheres or shell-less ZnO particles. The photoactivity of ZnO nanoparticles was greatly reduced by SiO(2)-coating, which enables their applications as durable, safe, and nonreactive UV blockers in plastics, coating, and other products.

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