Wedged N-doped CuO with more negative conductive band and lower overpotential for high efficiency photoelectric converting CO2 to methanol

The one dimensional wedge-shaped CuO structure was successfully prepared. The current efficiency for PEC reduction of CO2 on wedged N-doped CuO was 14.5 times that of CuO film under −1.2 V. Therefore, N-doped CuO exhibits more excellent PEC property for the reduction of CO2.