A Green Desulfurization Technique: Utilization of Flue Gas SO to Produce H via a Photoelectrochemical Process Based on Mo-Doped BiVO.

A green photoelectrochemical (PEC) process with simultaneous SO removal and H production has attracted an increasing attention. The proposed process uses flue gas SO to improve H production. The improvement of the efficiency of this process is necessary before it can become industrial viable. Herein, we reported a Mo modified BiVO photocatalysts for a simultaneous SO removal and H production. And the PEC performance could be significantly improved with doping and flue gas removal. The evolution rate of H and removal of SO could be enhanced by almost three times after Mo doping as compared with pristine BiVO. The enhanced H production and SO removal is attributed to the improved bulk charge carrier transportation after Mo doping, and greatly enhanced oxidation reaction kinetics on the photoanode due to the formation of [Formula: see text] after SO absorption by the electrolyte. Due to the utilization of SO to improve the production of H, the proposed PEC process may become a profitable desulfurization technique.