Abstract
Multiwall carbon nanotubes (MWCNTs) modified n- type Ni:Bismuth Vanadate photoanode has been prepared and investigated for solar energy induced water splitting for hydrogen generation. 0.5 wt% MWCNTs modified Ni:BiVO4 (M3) sample displayed the best response in comparison to the other samples. Electrochemical impedance spectroscopy (EIS) analysis indicates reduced charge transfer resistance and enhanced photoresponse at electrode/electrolyte interface. The calculated flat band potential, photocurrent density and applied bias photon to current conversion efficiency also support the augmentation in photoresponse. Thus, characteristics of MWCNTs has been demonstrated clearly which would support PEC efficiency as well as separation of charge carriers.
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