Fig. 5: Comparative life cycle impact of homogeneous and semi-heterogeneous protocols.

Global warming impact (kg CO2-equiv./kg catalyst component) for the manufacturing of the two photocatalytic technologies discussed in this study. The homogeneous catalytic system is based on the use of Ir[dF(CF3)ppy]2(dtbbpy)PF611, while the semi-heterogeneous system developed in this paper exploits nCNx. Ni complex = NiCl2·glyme, ligand = dMeObpy.