Fig. 4From: Metal–organic framework derived nanomaterials for electrocatalysis: recent developments for CO2 and N2 reductionReproduced with permission from Ref. [50]. Copyright 2015, American Chemical SocietySchematic representation of the fabrication of Co-P/NC nanopolyhedrons. a, b are the SEM image and high magnification SEM image. The elemental mapping of Co-P/NC show the even elemental distributions of Co, P, N, and C.Back to article page