P40. Spontaneous formation of gold nanoparticles from tetrachloride gold(III) ions in sonicated water(Poster Presentation)

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概要

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• We report here the spontaneous formation of gold nanoparticles (AuNPs) through the reduction of tetrachloride gold(III) ions ([AuCl_4]^-) in sonicated water. The [AuCl_4]^- reduction and the resulting AuNP formation were observed after an aqueous [AuCl_4]^- solution was mixed with an argon (Ar)-purged ultrapure water sonicated with 950 kHz both-type ultrasonicator at 20 ℃ in the absence of any added reducing agents. This indicates that products generated from the sonolysis of water react with [AuCl_4]^-. On the other hand, no significant [AuCl_4]^- reduction and AuNP formation were observed in aqueous hydrogen peroxide (H_2O_2) and nitric acid (HNO_3) solutions. This suggests that the [AuCl_4]^- reduction and the resulting AuNP formation in the sonicated water are caused by some products other than H_2O_2 and HNO_3.

• 日本ソノケミストリー学会の論文
• 2011-10-15

著者

• Okada Tomohiko

  Deperment of Chemistry and Material Engineering, Shinshu University

• Miwa Shoichi

  Deperment of Chemistry and Material Engineering, Shinshu University

• Mishima Shozi

  Deperment of Chemistry and Material Engineering, Shinshu University

• Sakai Toshio

  Deperment of Chemistry and Material Engineering, Shinshu University

関連論文

• P40. Spontaneous formation of gold nanoparticles from tetrachloride gold(III) ions in sonicated water(Poster Presentation)

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