The water reduction experiment was done before with Ca2+ and NaHCO3 and found the current would jump up when the potential approached to a negative value around -1V. It may be caused by the H2 bubble formed or CaCO3 solid formed on the surface of nanoelectrode to block the current. Thus, the aim of this experiment was to determine the CaCO3 solid formed to block Pt disk should be the main reason why current jumped up. The reduction of H2O2 could not form H2, thus if the same “jump up” of current was observed in this experiment, the CaCO3 solid forming during reaction can be proved. The Pt nano electrodes were used in this experiment. And as conclusion, the experiment showed the evidence that the CaCO3 has been formed on the surface of electrodes during the experiment.
Author: Hao Hu
Faculty Advisor: Dr. Hang Ren, Department of Chemistry & Biochemistry
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