Electrochemical study of gold electrodes with anodic oxide films—I. Formation and reduction behaviour of anodic oxides on gold Export

@article{citeulike:4128848, abstract = {Up to three types of oxide are formed during anodic polarization of gold. The first formed oxides (oxides I and II, surface oxides, inner oxides) can be selectively electrochemically reduced and reformed in the presence of the last formed oxide (oxide III, bulk oxide, outer oxide). It is shown that a second type of oxide (oxide II) is not formed before oxide I reaches a thickness of two monolayers, ie 1.5 mC cm −2 oxide charge. This critical limit is independent of pH, electrolyte, ionic strength, buffer, buffer capacity or surface roughness. A severe influence of insufficient buffer capacity in potentiodynamic surface oxide formation and reduction is experimentally shown, discussed and explained. It is suggested that the onset of oxide II formation can be used for surface roughness determinations.}, author = {Oesch, U. and Janata, J.}, citeulike-article-id = {4128848}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/0013-4686(83)85011-7}, citeulike-linkout-1 = {http://linkinghub.elsevier.com/retrieve/pii/0013468683850117}, doi = {10.1016/0013-4686(83)85011-7}, issn = {00134686}, journal = {Electrochimica Acta}, keywords = {cleaning, electrode, gold}, month = {September}, number = {9}, pages = {1237--1246}, posted-at = {2009-03-03 17:03:44}, priority = {2}, title = {Electrochemical study of gold electrodes with anodic oxide films—I. Formation and reduction behaviour of anodic oxides on gold}, url = {http://dx.doi.org/10.1016/0013-4686(83)85011-7}, volume = {28}, year = {1983} }

TY - JOUR ID - citeulike:4128848 L3 - citeulike-article-id:4128848 N2 - Up to three types of oxide are formed during anodic polarization of gold. The first formed oxides (oxides I and II, surface oxides, inner oxides) can be selectively electrochemically reduced and reformed in the presence of the last formed oxide (oxide III, bulk oxide, outer oxide). It is shown that a second type of oxide (oxide II) is not formed before oxide I reaches a thickness of two monolayers, ie 1.5 mC cm −2 oxide charge. This critical limit is independent of pH, electrolyte, ionic strength, buffer, buffer capacity or surface roughness. A severe influence of insufficient buffer capacity in potentiodynamic surface oxide formation and reduction is experimentally shown, discussed and explained. It is suggested that the onset of oxide II formation can be used for surface roughness determinations. IS - 9 JF - Electrochimica Acta SN - 00134686 EP - 1246 TI - Electrochemical study of gold electrodes with anodic oxide films—I. Formation and reduction behaviour of anodic oxides on gold VL - 28 SP - 1237 KW - cleaning KW - electrode KW - gold AU - Oesch, U AU - Janata, J PY - 1983/09// UR - http://dx.doi.org/10.1016/0013-4686(83)85011-7 ER -