Fig. 4: The bicarbonate species-mediated reaction pathway. | Nature Communications

Fig. 4: The bicarbonate species-mediated reaction pathway.

From: Electrochemical generation of hydrogen peroxide from a zinc gallium oxide anode with dual active sites

Fig. 4

a The H2O2 FE of ZnGa2O4 anode in different electrolytes (0.5 M) at a constant current of 8 mA cm−2. b In situ Fourier transform infrared spectra of ZnGa2O4 at different potentials in 2 M KHCO3. c Two possible decomposition ways of HCO4 on the catalyst surface. Models of d HCO3-ZnGa2O4 and HCO4-ZnGa2O4 at (311) facet, e HCO3-ZnO and HCO4-ZnO, f HCO3-Ga2O3 and HCO4-Ga2O3 before and after structure relaxation.

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