Cyclic and linear voltammetry on Ti/IrO2–Ta2O5–MnOx electrodes in sulfuric acid containing Mn2+ ions

Effects of Composition and Structure of IrO₂-Ta₂O₅/Ti Anodes on Suppression of PbO₂ Deposition

“…IrO 2 -Ta 2 O 5 coated Ti anode prepared by the thermal decomposition method has excellent catalytic properties for oxygen evolution in acidic solutions and alkaline solutions [36][37][38] , and its long lifetime has been proven for applications in electrogalvanizing and electrotinning of steel 11,[15][16][17][18][19][20][21] . Such excellent properties of the IrO 2 -Ta 2 O 5 /Ti anode on the catalytic activity and durability have driven further applications; e.g., electrolytic thin film production like copper foils [39][40][41][42] and electrowinning of nonferrous metals [43][44][45][46][47][48][49][50][51][52][53] .…”

Reaction Selectivity of IrO2-Based Nano/Amorphous Hybrid Oxide-Coated Titanium Anodes in Acidic Aqueous Solutions: Oxygen Evolution and Lead Oxide Deposition

“…In addition, the surface of the catalytic layer is composed of IrO 2 segregated particles, flat areas, and cracks, and the IrO 2 particles with sizes of 100 nm or more are segregated. 39 Although the IrO 2 -Ta 2 O 5 /Ti anode has already been applied, problems may arise if it is used as an anode material for oxygen evolution in the processes of electrolytic copper foil production [40][41][42][43] or metal electrowinning [44][45][46][47][48][49][50][51][52][53][54] using the same acidic aqueous solutions as for the electroplating of steel. Although electrolytic copper foil production and copper electrowinning processes use an acidic aqueous solution of copper sulfate as the electrolyte, Pb(II) ions are dissolved as an impurity in the electrolyte.…”

pH sensing in aqueous solutions using a MnO2 thin film electrodeposited on a glassy carbon electrode

“…To the best of our knowledge, all the E-pH responses reported in literature were obtained on MnO 2 powders. On the other hand, in the framework of other studies targeting other application domains, manganese dioxide has also been electrodeposited on various substrates such as platinum [23][24][25][26][27][28], gold [28][29], titanium [30][31], carbon nanotubes paper [32] and glassy carbon [28,[33][34][35][36]. This latter is largely used as a cheap electrode material due to its excellent electronic conductivity, chemical inertia, impermeability to gazes and liquids as well as a high resistance towards corrosion.…”