Figure 7

(a) UV-VIS DRS of KN-NL with the inset curve of (Ahν)2 νs. hν. (b) CV curves and (c) EIS Nyquist plots of KN-NL in an aqueous solution based three-electrode test under light irradiation and dark. (d) Photocurrent responses of KN-NL electrodes under chopped illumination with different bias voltage. (e) The amount of H2 evolved from as-prepared KN-NL photocatalyst under different irradiation time. (f) The proposed mechanism for photocatalytic H2 production.