Direct electrochemistry of cytochrome c at gold electrode modified with fumed silica

Hongjun Chen*, Yuling Wang, Shaojun Dong, Erkang Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Direct electrochemistry of horse heart cytochrome c (cytc) has been obtained at a gold electrode constructed by self-assembling fumed silica particles (FSPs) onto a silane monolayer. A pair of well-defined and nearly symmetrical redox peaks of cytc is obtained at the FSPs film modified gold electrode. Cyclic voltammetry (CV) and tapping-mode atomic force microscopy (AFM) are used to characterize the FSPs film modified electrode, showing that the FSPs can provide a favorable microenvironment for cytc and facilitate the direct electron transfer between the cytc and the gold electrode, which may propose an approach to realize the direct electrochemistry of other proteins.

Original languageEnglish
Pages (from-to)1801-1805
Number of pages5
JournalElectroanalysis
Volume17
Issue number20
DOIs
Publication statusPublished - Oct 2005
Externally publishedYes

Keywords

  • Atomic force microscopy
  • Cyclic voltammetry
  • Cytochrome c
  • Fumed silica particles

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