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An electrochemical study of several molecules has been carried out, using novel graphene‐modified screen printed electrodes (GN‐SPEs). Different analytical parameters have been optimized, as: the graphene concentration for a homogeneous coating of the electrode surfaces, the scan rates and the potential window for the electrochemical detection of potassium ferricyanide, catechol, hexaammineruthenium(III)...
The redox system K4Fe(CN)6 adsorbed into anion exchanger particles (Dowex 1×2 of typically 200 µm diameter) and impregnated with 1‐butyl‐3‐methyl‐imidazolium tetrafluoroborate ionic liquid (BMIM+BF4−) in contact to a 50 µm diameter platinum microelectrode show well‐defined Fe(III/II) voltammetric responses. Processes are studied at the ionic liquid sphere | electrode | gas interface in the presence...
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