Corrosion Suppression on Rutile Anodes by High Energy Redox Reactions

Abstract

ACTIVATION OF ELECTRODE SURFACES 83g an essentially linear growth (i.e., constant growth rate) regardless of the relative importance of the oxide formation in the over-all anodic process \ b / L (t) ~ [ (Lo --L1) --L1 log to] Jr Lit [15']Another interesting point would be the variation of the critical time with pertinent process parameters under galvanostatic conditions in view of the welldocumented difference in the growth rate vs. time rerelationship with respect to potentiostatic conditions [e.g., (7)], in the instance of Pt anodes. Since galvanostatic conditions are less inviting than potentiostatic conditions for a rotating wiper-blade electrode, such an investigation would be beyond the scope of our current research. The hereby presented analysis of critical time would most likely prove useful in improved design of wiper-blade electrode systems both for mechanism studies and practical oxidations at the continuously activated electrode surface, by choosing appropriate rotation rates and wiper-blade widths for a given electrode metal and specific electrochemical reactions.

The Influence of Illumination on the Flat Band Potential of the Contact TiO2/CH3CN(+ H2O)

“…Another strong argument in favour to our explanation is the generally accepted high stability of TiO z [9 -11]. Alterations of this material have only been observed in duration experiments under extreme conditions such as etching in 0.5 M H 2S04 under illumination up to 32 h [21,22] or if strong anodic potentials (10 V, 64 h) were applied [23].…”

Rotating ring-disk electrochemical quartz crystal microbalance: a new tool for in situ studies of oxide film formation

“…Harris et al [25] studied the corrosion of titanium in sulfuric acid in the presence of redox couples and concluded that Ti does not corrode in concentrated (9 M) H 2 SO 4 . Blackwood and Peter [26] found that titanium oxide films undergo slow uniform dissolution and that their stability at open circuit potential depends strongly on the rate of formation.…”

Aqueous Redox Transition Metal Complexes for Electrochemical Applications as a Function of pH

“…Some of them are: [Fe(II/III)(CN)G] 4-/3- (19), Eu(II/III) (20), Ti(III/IV) (19,21), Fe(II/III) (19,21), Ce(III/IV) (19,21), Co(II/III) (8), cobalt sepulchrate (3), and the chromium complex of ferrocene carboxylic acid (9). Some of them are: [Fe(II/III)(CN)G] 4-/3- (19), Eu(II/III) (20), Ti(III/IV) (19,21), Fe(II/III) (19,21), Ce(III/IV) (19,21), Co(II/III) (8), cobalt sepulchrate (3), and the chromium complex of ferrocene carboxylic acid (9).…”