▎ 摘　　要

Here, we describe the in-situ synthesis of multicomponent ZnO-based photocatalysts for hydrogen production. We fabricated ZnO coupled with Cu-Cu2O nanoparticles and modified reduced graphene oxide (mRGO) to ameliorate hydrogen production. The simultaneous introduction of mRGO and Cu-Cu2O enhanced the generation rate of photo -catalytic hydrogen to 3085.02 mmol g(-1) h(-1) due to significant alteration of the electronic structure. The bandgap energy of the prepared catalysts decreased from 3.2 eV for pristine ZnO to 2.64 eV for a composite containing 15% Cu-Cu2O. The optimal designed hetero-structure efficiently separates photo charge carriers and prevents charge carriers' recombination by accelerating charge transfer with the help of mRGO and metallic Cu and as a result leading to efficient hydrogen yields. (C) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.