Synthesis of step-scheme In2Se3/CdSe nanocomposites photocatalysts for hydrogen production

In this paper, In2Se3/CdSe nanocomposites are successfully synthesized and used for photocatalytic hydrogen production. HRTEM and XPS confirm the existence of heterojunction between In2Se3 and CdSe. The In2Se3/CdSe nanocomposite with a CdSe content of about 85.96% shows the best photocatalytic hydrogen production activity, and its photocatalytic performance is much better than that of In2Se3 and CdSe. The improved photocatalytic hydrogen production ability of the In2Se3/CdSe nanocomposite is attributed to the good visible-light absorption ability and the step-scheme heterojunction formed between In(2)Se(3 )and CdSe. The step-scheme heterojunction can significantly enhance the separation of photogenerated electrons and holes, thus improving the photocatalytic activity of the photocatalysts. This study provides a feasible method for the construction of step-scheme photocatalyst for hydrogen production.

Automated summary

In this study, In2Se3/CdSe nanocomposites were successfully synthesized and displayed enhanced photocatalytic hydrogen production compared to In2Se3 and CdSe due to their good visible-light absorption ability and the formation of a step-scheme heterojunction. The improved separation of photogenerated electrons and holes in the step-scheme heterojunction significantly enhanced the photocatalytic activity of the photocatalysts, providing a feasible method for constructing a step-scheme photocatalyst for hydrogen production.