Electrochemical measurements were recorded using an Autolab Potentiostat 30 (Metrohm, Switzerland) with a standard threeelectrode configuration. The working electrode was either a BDD electrode or a glassy carbon (GC) electrode. The auxiliary and reference
electrodes were platinum wire and Ag/AgCl, respectively.Cyclic voltammetry was used to probe the electrochemical reaction.The electrochemical measurements were housed in a Faradaiccage to reduce electronic noise. All experiments were done at room
temperature.