Electro-assisted oxidation

Bedioui, F., P. Moisy, J. Devynck, L. Salmon, and C. Bied-Charreton (1989). Poly(pyrrole manganese porphyrin) film electrode as a catalyst in electro-assisted oxidation reactions using molecular-oxygen. Comparison with described homogeneous systems. J. Mol. Catal. 56(1-3), 267-275. 

Figure 14.11 Dlustration of CO electro-oxidation at Pt-modified Ru(OOOl) (a) mixed, non-leactive adlayer (b) Pt-assisted formation of OH d at high local adsorbate coverages on the Ru areas (c) CO oxidation at the Pt islands. For simplicity, H is used instead of H30. ...

The rate of the reaction of electro-oxidation is slow, and there are two methods to overcome this obstacle. One method is to choose noble metal electrocatalysts as the electrode materials, and the other method is to use suitable redox mediators for indirect oxidation of SO2. These redox mediators can be generated or regenerated at the anode, such as a Ce(IV)-assisted process for the removal of SO2, as shown in Eqn (14.9) ... 

Similarly, there are other chemical compounds used to remove organic compounds [17] electrokinetically enhanced persulfate oxidation of PCBs in low-permeability clayey soils, yielding 77.9 % degradation of PCBs with thermal activation after 7 days remediation of 1,2-dichloroethane contaminated soils using electro-kinetic-assisted nano FesOVSaOg processes, with a removal efficiency of more than 96 % after 14 days and degradation of sorbed hexachlorobenzene using an electrokinetic Fenton process. 

Plasma electrolytic oxidation (PEO) is an efficient method for production of functional ceramic surface layers on non-ferrous metals, such as aluminium, magnesium, zirconium and titanium alloys. During PEO process the electrochemical reaction of anodic oxidation on the metal surface is assisted by micro-discharge events to promote formation of thick, hard and well-adhered oxide ceramic surface layers with specific morphologies and phase compositions, exhibiting superior protective performance and other useful electro-physical and chemical properties. ... 

In 1972, Fujishima and Honda succeeded in electro-photo-assisted water splitting using a titanium(IV) oxide (Ti02) photoanode in combination with a platinum... 

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