CdSe Quantum Dots/g-C(3)N(4) Heterostructure for Efficient H(2) Production under Visible Light Irradiation

[Image: see text] Novel photocatalysts -CdSe quantum dots (QDs)/g-C(3)N(4)- were successfully constructed. The structure, chemical composition, and optical properties of the prepared samples were investigated via a series of characterization techniques. The results indicated that CdSe QDs/g-C(3)N(4) photocatalysts exhibited remarkably enhanced photocatalytic activity for visible-light-induced H(2) evolution compared to pristine g-C(3)N(4) and CdSe QDs and addition of 13.6 wt % CdSe QDs into the composite photocatalyst generated the highest H(2) production rate. The enhanced photocatalytic performance of CdSe QDs/g-C(3)N(4) can be attributed to the synergistic effects of excellent visible absorption and high charge separation efficiency from the heterostructure. This work could not only provide a facile method to fabricate semiconductor QDs-modified g-C(3)N(4) photocatalysts but also contribute to the design for heterostructures.