Thiocyanates electrooxidation

Linares-FlOTes C, Mac-LeadCarey D, Munoz-Castro A, Zagal JH, Pavez J, Pino-Riffo D, Arratia-Perez R (2012) Reintoineting the role of the catalyst formal potential. The case of thiocyanate electrooxidation catalyzed by CoN4-macrocyclic complexes. J Phys Chem C 116 7091-7098... 

It has been widely reported that electrooxidation of the thiocyanate ion at pH 4 yields hydrogen cyanide and (or) cyanide and sulfate ions as main products [134]. However, there is a huge gap in terms of the mechanism that takes place between the binding of thiocyanate to the catalyst and the products experimentally found. In order to get insight about the elemental reactions between these processes, it is proposed based on experimental evidence that the oxidation of thiocyanate particularly catalyzed by MPc and MPc like systems, leads to the production of thiocyanate radicals that dimerize to form the pseudohalogen molecule thio-cyanogen (SCN)2 [132, 135-139]. 

Sancy M, Pavez J, Gulppi MA, Mattos EL, Arratia-Perez R, Linares-Flores C, Paez M, Nyokong T, Zagal JH (2011) Optimizing the electiocatal5rtic activity of surface confined Co macrocyclics for the electrooxidation of thiocyanate at pH 4. Electroanal 23 711-718... 

Metalloimmunoassays for proteins based on stripping analysis of copper- and silver-enhanced " AuNPs as well as silver nanoparticle labels have also been reported. One problem with all dissolution-based strategies for electrochanical detection of nanoparticle or enhanced nanoparticle labels is that dissolution often involves anploying toxic or corrosive reagents, for example, hydrobromic acid/bromine mixture for AuNPs and nitric acid for silver nanoparticles and copper- or silver-enhanced AuNPs. In one study, electrooxidation and complexation with thiocyanate was used as an alternative to dissolve silver nanoparticles in place of nitric acid for anodic stripping detection of myoglobin. ... 

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