Paper Title:
Ferrous Ion Oxidation Behavior on a Bacteria Attached Power Micro Electrode
  Abstract

In this paper a special At.f (Acidthiobacillus ferrooxidans) modified carbon powder microelectrode was prepared, and a series of electrochemical measurements were conducted to study ferrous ion Fe2 + oxidation mechanism on the electrode. CV (cyclic voltammetry) studies show that this oxidation reaction is reversible when c (Fe2 +) is lower than 0.16mol/L. At higher speed scanning, the currents through the electrode include two parts of the micro disc current and the thin layer current, while at lower speed scanning of steady state process the current provided by thin layer could be ignored, the whole oxidation reaction was controlled by diffusion process, and the calculated diffusion coefficient D0 is about 6. 25 ×10 - 6cm2.s – 1. The transient potential stair step studies also have been conducted. The results are consistence with steady state ones although thin layer currents should be taken in to account.

  Info
Periodical
Advanced Materials Research (Volumes 233-235)
Edited by
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Pages
2699-2704
DOI
10.4028/www.scientific.net/AMR.233-235.2699
Citation
H. X. Li, B. Jin, C. Q. Jiao, B. B. Liu, "Ferrous Ion Oxidation Behavior on a Bacteria Attached Power Micro Electrode", Advanced Materials Research, Vols. 233-235, pp. 2699-2704, 2011
Online since
May 2011
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$32.00
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