Electrocrystallization of monodisperse nanocrystal copper on highly oriented pyrolytic graphite electrode

Ling Huang, Eun Sung Lee, Kwang Bum Kim

Research output: Contribution to journalArticle

Abstract

Mechanism of copper electrocrystallization on highly oriented pyrolytic graphite electrode from a solution of 1 mmol/L CuSO4 and 1.0 mol/L H2SO4 has been studied using cyclic voltammogram and chronoamperometry. The results show that in copper electrodeposition the charge-transfer step is fast and the rate of growth is controlled by the rate of mass transfer of copper ions to the growing centers. Reduction of Cu(II) ions did not undergo underpotential deposition. The initial deposition kinetics of Cu electrocrystallization corresponds to a model including progressive nucleation and diffusion controlled growth. Copper nanocrystals with size of 75.6 nm and relative standard deviation of 9% can be obtained by modulation potential electrodeposition.

Original languageEnglish
Pages (from-to)121-126
Number of pages6
JournalChinese Journal of Chemistry
Volume23
Issue number2
DOIs
Publication statusPublished - 2005 Feb 1

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Graphite electrodes
Nanocrystals
Copper
Electrodeposition
Ions
Chronoamperometry
Charge transfer
Nucleation
Mass transfer
Modulation
Kinetics

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

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title = "Electrocrystallization of monodisperse nanocrystal copper on highly oriented pyrolytic graphite electrode",
abstract = "Mechanism of copper electrocrystallization on highly oriented pyrolytic graphite electrode from a solution of 1 mmol/L CuSO4 and 1.0 mol/L H2SO4 has been studied using cyclic voltammogram and chronoamperometry. The results show that in copper electrodeposition the charge-transfer step is fast and the rate of growth is controlled by the rate of mass transfer of copper ions to the growing centers. Reduction of Cu(II) ions did not undergo underpotential deposition. The initial deposition kinetics of Cu electrocrystallization corresponds to a model including progressive nucleation and diffusion controlled growth. Copper nanocrystals with size of 75.6 nm and relative standard deviation of 9{\%} can be obtained by modulation potential electrodeposition.",
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Electrocrystallization of monodisperse nanocrystal copper on highly oriented pyrolytic graphite electrode. / Huang, Ling; Lee, Eun Sung; Kim, Kwang Bum.

In: Chinese Journal of Chemistry, Vol. 23, No. 2, 01.02.2005, p. 121-126.

Research output: Contribution to journalArticle

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