Facile preparation of yttrium and aluminum co-doped ZnO via a sol-gel route for photocatalytic hydrogen production

Yttrium and aluminum co-doped ZnO were successfully synthesized by the sol-gel method, showing high photocatalytic activity for hydrogen production (5.71 mmol h(-1) g(-1)) in the water-lactic acid system under visible-light irradiation for the first time, exhibiting excellent stability and recyclability.