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Journal of Nanoparticle Research
Erschienen in: Journal of Nanoparticle Research 8/2012

01.08.2012 | Brief Communication

Green synthesis and characterization of size tunable silica-capped gold core–shell nanoparticles

verfasst von: Nishima Wangoo, Gajendra Shekhawat, Jin-Song Wu, Aman K. K. Bhasin, C. R. Suri, K. K. Bhasin, Vinayak Dravid

Erschienen in: Journal of Nanoparticle Research | Ausgabe 8/2012

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Abstract

Silica-coated gold nanoparticles (Au@SiO2) with controlled silica-shell thickness were prepared by a modified Stober’s method using 10-nm gold nanoparticles (AuNPs) as seeds. The AuNPs were silica-coated with a sol–gel reaction using tetraethylorthosilicate (TEOS) as a silica source and ammonia as a catalyst. An increase in TEOS concentration resulted in an increase in shell thickness. The NPs were characterized by transmission electron microscopy, selected area electron diffraction, energy-dispersive X-ray spectroscopy, scanning near-field ultrasound holography and scanning transmission electron microscopy. The method required no surface modification and the synthesized core shell nanoparticles can be used for various types of biological applications.
Vorheriger Artikel In vitro study revealed different size behavior of different nanoparticles
Nächster Artikel Removal of heavy metals from aqueous solutions using Fe3O4, ZnO, and CuO nanoparticles

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Metadaten
Titel
Green synthesis and characterization of size tunable silica-capped gold core–shell nanoparticles
verfasst von
Nishima Wangoo
Gajendra Shekhawat
Jin-Song Wu
Aman K. K. Bhasin
C. R. Suri
K. K. Bhasin
Vinayak Dravid
Publikationsdatum
01.08.2012
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 8/2012
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-012-1011-5

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