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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/11434

Title: In-Situ Quick XAFS Study on the Formation Mechanism of Cu Nanoparticles Synthesized in Aqueous Phase
Authors: Nishimura, Shun
Takagaki, Atsushi
Maenosono, Shinya
Ebitani, Kohki
Keywords: in-situ XAFS
Cu nanoparticles
formation mechanism
role of capping agent
reaction kinetic
Issue Date: 2010-06
Publisher: Nano Science and Technology Institute
Magazine name: Nanotech 2010
Volume: 1
Start page: 356
End page: 359
Abstract: The formation process of Cu nanoparticles (NPs)capped by poly(N-vinyl-2-pyrrolidone) (PVP) using a wetchemical reduction method was observed with in-situ timeresolved X-ray adsorption fine structure (XAFS) method incombination with other analytical techniques. XAFS analysis directly indicated that the Cu(OH)_2 and Cu^+ species were formed as intermediates, and their life-time were extended by adding PVP capping agent. The morphology analysis and indicator method also supported that both reticulated Cu(OH)_2 structure and Cu^+ intermediate remained for a long time with an increase in PVP capping agent. Our results suggested that the PVP capping agent plays an important role to the reaction kinetic resulting from extending the life-time of intermediates such as Cu(OH)_2 and Cu^+ species.
Rights: © 2010 NSTI http://nsti.org. Reprinted and revised, with permission, from Nanotech 2010, pp. 356-359, June 21-24, 2010, Anaheim, U.S.A.
URI: http://hdl.handle.net/10119/11434
Material Type: publisher
Appears in Collections:c11-1. 会議発表論文 (Conference Papers)

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