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Erschienen in: Journal of Nanoparticle Research 8/2012

01.08.2012 | Research Paper

Synthesis of polyhedral Ag nanostructures by a PVP-assisted hydrothermal method

verfasst von: Xiaolong Ding, Caixia Kan, Bo Mo, Shanlin Ke, Bo Cong, Lihong Xu, Jiejun Zhu

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

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Abstract

Silver nanocrystals, including single-crystalline cubic nanostructures and multiply twined polyhedrons, have been synthesized by a hydrothermal method with the presence of poly(vinyl pyrrolidone) (PVP). Field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and UV–Vis–NIR spectrometer have been employed to investigate the morphology and optical properties of the products. The results show that the shapes of Ag nanostructures are mainly correlated to the molar ratio between PVP and AgNO3. Anisotropic Ag nanostructures with shapes of cube, truncated octahedron, decahedrons, and icosahedrons were obtained when the molar ratio changed in the range of 4–20. It’s quite possible that Fullerene-structured Ag nanocrystal can be formed through this method. The plausible growth mechanisms for the Ag nanostructures of various shapes were present, in which PVP serves as both reducing and surfactant agent for the reduction of Ag+ and growth modifier of the nanocrystals.

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Metadaten
Titel
Synthesis of polyhedral Ag nanostructures by a PVP-assisted hydrothermal method
verfasst von
Xiaolong Ding
Caixia Kan
Bo Mo
Shanlin Ke
Bo Cong
Lihong Xu
Jiejun Zhu
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/s11051-012-1000-8

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