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author:

Tang Jing (Tang Jing.) [1] (Scholars:汤儆) | Tian Xiao-Chun (Tian Xiao-Chun.) [2] | Zhou Fu-Qing (Zhou Fu-Qing.) [3] | Liu Yue-Qiang (Liu Yue-Qiang.) [4] | Lin Jian-Hang (Lin Jian-Hang.) [5] (Scholars:林建航)

Indexed by:

Scopus SCIE PKU CSCD

Abstract:

Cyclic voltammetric and chronoamperometric methods were used to study the initial stage of Au electrodeposition on an indium tin oxide (ITO) surface. The nucleation process was controlled by the diffusion of [AuCl4](-). The cyclic voltammetry curves showed that the electrochemical reduction included two steps which were [AuCl4](-)->[AuCl2](-), and [AuCl2](-)-> Au. Only one reduction peak was observed when the scan rate was comparatively slow and this peak separated into two peaks when the scan rate was increased. This phenomenon resulted from the disproportionation of [AuCl2](-) during the electrodeposition process. Chronoamperometry also proved the two step reaction mechanism and the diffusion coefficient of [AuCl4](-) was calculated to be 1.3x10(-5) cm(2).s(-1). From the theoretical nucleation curves, an instantaneous three-dimensional nucleation mechanism was proposed for the nucleation of gold on ITO. Au electrodeposits were observed by field emission scanning electron microscopy (FE-SEM). SEM images of the electrodeposits showed that the morphology of the gold deposits was affected by the electrochemical deposition potential and time.

Keyword:

Au nano particle Electrodeposition Indium Tin Oxide Nucleation mechanism

Community:

  • [ 1 ] [Tang Jing]Fuzhou Univ, Key Lab Anal & Detect Technol Food Safety, Minist Educ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 2 ] [Tian Xiao-Chun]Fuzhou Univ, Key Lab Anal & Detect Technol Food Safety, Minist Educ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 3 ] [Zhou Fu-Qing]Fuzhou Univ, Key Lab Anal & Detect Technol Food Safety, Minist Educ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 4 ] [Liu Yue-Qiang]Fuzhou Univ, Key Lab Anal & Detect Technol Food Safety, Minist Educ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China
  • [ 5 ] [Lin Jian-Hang]Fuzhou Univ, Instrumental Measurement & Anal Ctr, Fuzhou 350002, Peoples R China

Reprint 's Address:

  • 汤儆

    [Tang Jing]Fuzhou Univ, Key Lab Anal & Detect Technol Food Safety, Minist Educ, Coll Chem & Chem Engn, Fuzhou 350108, Peoples R China

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Source :

ACTA PHYSICO-CHIMICA SINICA

ISSN: 1000-6818

CN: 11-1892/O6

Year: 2011

Issue: 3

Volume: 27

Page: 641-646

0 . 7 8

JCR@2011

1 0 . 8 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 6

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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