Scanning electrochemical microscopy determination of hydrogen flux at liquid|liquid interface with potentiometric probe

摘要

Scanning electrochemicalmicroscopy potentiometric determination of local hydrogen concentration and its flux next to the liquid|liquid interfacewas demonstrated. Thismethod is based on the shift of open circuit potential of Pt-based reversible hydrogen electrode. The detection system was verified with a system generating hydrogen under galvanostatic conditions. Then, it was applied to aqueous|1,2-dichloroethane interface where hydrogen is produced with decamethylferrocene as electron donor.