Electrochemically mediated reduction of epichlorohydrin pollutant by Ni(I)(hexamethylcyclam) in aqueous media
作者： K. Chandrasekara Pillai , G. Muthuraman , Il-Shik Moon
DOI: 10.1016/J.ELECTACTA.2017.02.147
关键词:
摘要: Abstract Epichlorohydrin (ECH) is a volatile organic compound and toxic to human health. Here we investigated clean mediated electrocatalytic dechlorination of ECH in aqueous solutions using electrogenerated [Nickel(I)(hexamethylcyclam)]+ ([Ni(I)(hmc)]+) at glassy carbon cathode. Ni(II)/Ni(I) redox behavior [Ni(II)(hmc)]2+, examined first by cyclic voltammetry free-aqueous various anions (Cl−, Br−, ClO4−, SO42−, phosphate, NO3−), showed only Cl− could provide most stable reactive low-valent nickel species with highest versatility toward activation dechlorination. Cyclic experiments over range scan rates concentrations elucidated rate limiting mechanism for Ni(I) catalyzed dechlorination, estimated catalytic reaction constant (kcat). concentration-dependent kcat icat results revealed followed Michaelis-Menten type inner-sphere electron transfer kinetics low (
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