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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Exotic shapes of gold nanoparticles synthesized using plasma in aqueous solution

http://hdl.handle.net/2237/12033
http://hdl.handle.net/2237/12033
6ff29aac-82e0-455c-a182-627040fd2b35
名前 / ファイル ライセンス アクション
JVA000854.pdf JVA000854.pdf (158.5 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2009-08-17
タイトル
タイトル Exotic shapes of gold nanoparticles synthesized using plasma in aqueous solution
言語 en
著者 Hieda, Junko

× Hieda, Junko

WEKO 30906

en Hieda, Junko

Search repository
Saito, Nagahiro

× Saito, Nagahiro

WEKO 30907

en Saito, Nagahiro

Search repository
Takai, Osamu

× Takai, Osamu

WEKO 30908

en Takai, Osamu

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 Copyright (2008) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
抄録
内容記述 Gold nanoparticles with exotic shapes, such as triangle, pentagon, and hexagon, have been synthesized by glow discharge in aqueous solutions. A pulsed power supply was used to generate discharges in the aqueous solutions. Pulse width and frequency were 2 µs and 15 kHz, respectively. Discharges were generated at applied voltages of 1600 and 3200 V. The shapes of the gold nanoparticles and electron diffraction patterns were observed by transmission electron microscopy. The nanoparticles obtained were about 20 nm in diameter. In particular, at the higher voltage of 3200 V, nanoparticles with anisotropic shapes were synthesized. In the initial stages of synthesis, diameter decreased with discharge time as the nanoparticles redissolved in the solution. After discharge for 25 min, nanoparticles with anisotropic shapes appeared. This discharge led to the generation of H_2O_2 and a decrease in pH as a result of the consumption of OH radicals during the generation of H_2O_2 and electron donation of H radicals to the solution. After the pH stopped decreasing, H radicals mainly reacted as a reducing agent. The decrease in pH allowed redissolution of the gold nanoparticles. The gold dust particles that were not completely dissolved acted as new seeds for nucleation. Thus, the two reaction steps, nucleation and nuclear growth, occur during the formation of gold nanoparticles with exotic shapes.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 American Institite of Physics
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1116/1.2919139
ISSN
収録物識別子タイプ PISSN
収録物識別子 0734-2101
書誌情報 en : Journal of Vacuum Science and Technology A

巻 26, 号 4, p. 854-856, 発行日 2008-07-01
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://dx.doi.org/10.1116/1.2919139
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/12033
識別子タイプ HDL
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