Au Electrodeposition at the Liquid-Liquid Interface: mechanistic aspects

• Uehara, Akihiro

• Hashimoto, Teruo

• Dryfe, Robert A.W.

Abstract

The deposition mechanism of metallic gold was investigated based on charge transfer voltammetry at the water/1,2-dichloroethane (W/DCE) interface, and the corresponding redox voltammetry of the metal precursor in W and the reductant, triphenylamine (TPA), in DCE. The metal precursor was present as Au(III) (AuCl_4^[−]), or Au(I) (AuCl_2^[−]) in W or DCE. Electron transfer could be observed voltammetrically at the interface between W containing both Au precursors and DCE containing TPA. Au particles, formed by constant potential electrolysis at the W/DCE interface, were examined by transmission electron microscopy. It was shown that deposit size could be controlled via the applied potential and time, with specific conditions to form particles of less than 10 nm identified.

Journal

• Electrochimica Acta

  Electrochimica Acta 118 26-32, 2014-02

  Elsevier Ltd.

Keywords

• Electron transfer voltammetry
• ITIES
• Au nanoparticle
• Tetrachloroaurate
• Dichloroaurate

Details

• CRID: 1050001335780721024
• NII Article ID: 120005372983
• NII Book ID: AA00633261
• ISSN: 00134686
• HANDLE: 2433/182034
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles