Ferrioxalate photocatalysis represents a multipurpose platform for iron reduction catalysis. It exploits the abundance of iron to create sustainable catalytic systems. The article was published in Science, Volume 391, Issue 6780, Pages 84-89, January 2026. This method enables multitasking in iron reduction reactions. Photocatalysis of ferrioxalate involves photoredox reactions where excitation in the charge transfer band leads to dissolution of the Fe-O bond prior to intramolecular electron transfer[1][2]. The primary reaction produces Fe(III) to Fe(II) with a low quantum yield of electron photodetachment[1]. These findings confirm the mechanism of ferrioxalate photolysis on the subpicosecond time scale[2].