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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/10734

Title: Role of base in the formation of silver nanoparticles synthesized using sodium acrylate as a dual reducing and encapsulating agent
Authors: Nishimura, Shun
Mott, Derrick
Takagaki, Atsushi
Maenosono, Shinya
Ebitani, Kohki
Issue Date: 2011-04-08
Publisher: Royal Society of Chemistry
Magazine name: Physical Chemistry Chemical Physics
Volume: 13
Number: 20
Start page: 9335
End page: 9343
DOI: 10.1039/C0CP02985H
Abstract: The formation mechanism of Ag nanoparticles (NPs) synthesized with a wet-chemical reduction method using sodium acrylate as dual reducing and capping agents was investigated with various analytical techniques. The time course of state of the reaction solution was investigated using UV vis and XAFS spectroscopies which showed that the NP formation rate increased with increasing concentration of sodium hydroxide (NaOH). The detailed kinetic analyses reveal that both the reduction rate of Ag ions and the nucleation rate of Ag NPs are dramatically increased with increasing the NaOH concentration. XANES analyses imply that another reaction pathway via alternative Ag^+ species, such as Ag(OH)_x, was developed in the presence of NaOH. Consequently, NaOH is found to play an important role not only in creating specific intermediates in the reduction of Ag^+ to Ag^0, but also accelerating the reduction and nucleation rates by enhancing the oxidation of sodium acrylate, thereby increasing the rate of formation of the Ag NPs.
Rights: Copyright (C) 2011 Royal Society of Chemistry. Shun Nishimura, Derrick Mott, Atsushi Takagaki, Shinya Maenosono and Kohki Ebitani, Physical Chemistry Chemical Physics, 13(20), 2011, 9335-9343. http://dx.doi.org/10.1039/C0CP02985H - Reproduced by permission of The Royal Society of Chemistry
URI: http://hdl.handle.net/10119/10734
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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