Acetonitrile corrosion resistance

The condensation products of F with acetone constitute interesting precursors to resins which have found applications as adhesives, corrosion-resistant coatings and floors for the chemical industry [4a, 4c, 4d]. Numerous other monomer combinations involving F have been exploited to prepare materials for different uses [4a, 4c, 4d] and recent additions to these studies include chelate polymers for the adsorption of metal ions [23], nanocomposites incorporating Fc203 [24], an investigation of the reductive electrochemical polymerization of F in acetonitrile [25] and the anticorrosion protection offered by the ensuing polymer [26]. 

The first applications of SECM in PEC were measurements of the rate of electron transfer in the dark to n- and p-WSe2 electrodes in aqueous electrolytes and at n-Si in acetonitrile and methanol, with the same approach as that described in Chapter 6. For soniconductor electrodes, dark oxidations can be carried out for p-type materials, and dark reductions for n-type ones. SECM has the advantage of making such measurements without difficulties from electrode resistance and capacitance and without perturbation from currents from the corrosion of the semiconductor material itself. In one case, p-WSe2 with Ru(NH3)6 as a mediator, the results agreed with the expected model for the rate constant as a function of potential (i.e., as 1). However, with other mediators or with n-WSc2 or p-Si this behavior was not seen. 

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