Real time potentiometric macro flow sensor: An innovative tool to monitor electrogenerated electron mediator in high concentrated electrolyte during electrolysis and air pollutants removal

摘要: Abstract An ex-situ potentiometric titrations were normally performed using an oxidation/reduction potential (ORP) electrode to monitor the electrochemically generated active electron mediators, either oxidants or reductants, in a mediator generation plant. In present investigation, attempt was made [Ni1+(CN)4]3- (Ni(I)) in-situ high electrolyte concentration (9 M KOH) during its electrochemical generation. A ring type flow cell developed 0.6 cm diameter tested on standard redox couple of [Fe3+(CN)6]3- (Fe(III))/[Fe2+(CN)6]4- (Fe(II)) at different ratios solution flow. The found results suggested that direct determination prepared is possible method. periodical change linear sweep voltammetry electrogenerated Ni(I) allowed by cell. calibration plot derived from chemically synthesized titration UV–visible spectra used detected 0–4.5 mmol/L region followed non-Nernstian behavior. N2O removal scrubber column suggesting air pollutant can be monitored sensor cell, once how many involved process.