Electrochemical reduction modeling of copper oxides obtained during in situ and ex situ conditions in the presence of acetic acid
2009 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 0019-4686, Vol. 54, no 20, 4676-4681 p.Article in journal (Refereed) Published
We used the potentiodynamic reduction technique to study the mechanism of copper oxide formation inthe presence of acetic acid.We performed all reductions under neutral conditions (0.1MKCl) until hydrogenevolution. We produced the copper oxides in an environment containing 0, 500, and 800 ppb aceticacid at high relative humidity. We then compared experimental results between electrochemically producedoxide films obtained by imposing anodic potentials to copper specimens in several concentrationsof pure acetic acid (1, 0.1, 0.01 and 0.001 M). We found that, as the concentration of the acid decreases,the formation of the copper oxide (I) increases.We also found the same peaks in samples produced underthe synthetic environment.We modeled the curves, taking into account the electrochemical reduction ofcopper (II) oxide (CuO), amorphous cuprite (Cu2O)am, intermediate cuprite (Cu2O)in, crystalline cuprite(Cu2O)cr, and hydrogen. These oxides have been previously detected in similar conditions. We found noevidence of copper carboxylate founding samples produced by the electrochemical method.
Place, publisher, year, edition, pages
Elsevier , 2009. Vol. 54, no 20, 4676-4681 p.
potentiodynamic reduction, atmospheric corrosion, copper, acetic acid, copper oxides
IdentifiersURN: urn:nbn:se:kth:diva-47542DOI: 10.1016/j.electacta.2009.03.082ISI: 000266931800013OAI: oai:DiVA.org:kth-47542DiVA: diva2:455658
QC 201111142011-11-102011-11-102011-11-14Bibliographically approved