Formation of novel metal nanoparticles at electrochemical liquid/liquid interface between ionic liquid and water as a reaction field

2016 Fiscal Year Final Research Report

• Project/Area Number: 26410149
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Analytical chemistry
• Research Institution: Kyoto University
• Principal Investigator: Nishi Naoya 京都大学, 工学研究科, 准教授 (10372567)
• Co-Investigator(Renkei-kenkyūsha): SAKKA Tetsuo 京都大学, 大学院工学研究科, 教授 (10196206) ; AMANO Ken-ichi 京都大学, 大学院工学研究科, 助教 (30634191)
• Research Collaborator: KAKINAMI Tatsuya ; YAJIMA Ikumi
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: イオン液体｜水界面 / 液液界面 / ナノファイバー / 電子移動 / イオン移動 / 塩化金酸 / デンドライト / 溶融塩

Outline of Final Research Achievements

Gold nanofibers have been found to be formed via a spontaneous and heterogeneous electron-transfer reaction at the soft liquid/liquid interface between highly hydrophobic ionic liquid and water. The tips of the nanofibers show a dendritic structure. The dendrites are bundled to nanofibers except around the tips. Electrochemical reactions at the ionic liquid/water interface have revealed that electron transfer and ion transfer are coupled, leading to the spontaneous reductive deposition of the gold nanofibers. The several roles of the ionic liquid for the dendritic nanofiber formation have been found.

Free Research Field

電気分析化学