Perovskite oxides successfully catalyze the electrolytic hydrogen production from oilfield wastewater

Although Pt/C has long been regarded as the most effective HER catalyst, the use of complicated water systems is challenged by high costs and contaminant interference. Therefore, it was shown in this paper that a low-cost perovskite oxide, SrCo0.7Fe0.3O3-d(SCFX, where X denotes annealing temperature), could be used in oil-field wastewater to promote electrochemical reactions for hydrogen production and that its catalytic activity can be impacted by calcination temperature. And, the outstanding catalytic activity of SCF-800 and 850 is primarily caused by crystal structure distortions and the presence of Co3 thorn /Co4 thorn coupling pairs as a result of electron transfer between Co and Fe, which increases the concentration of reactive oxygen species. Furthermore, there is now more interest in SCF850 due to its exceptional stability. In complicated systems, the current work provides a feasible route for perovskite catalysts to produce hydrogen. & COPY; 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

This paper demonstrates the use of a low-cost perovskite oxide catalyst in oil-field wastewater for promoting electrochemical reactions for hydrogen production. The catalytic activity of SCF-800 and SCF-850 is primarily influenced by crystal structure distortions and the presence of Co3 Thorn/Co4 Thorn coupling pairs, which increase the concentration of reactive oxygen species. Furthermore, SCF-850 is of particular interest due to its exceptional stability.