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CdSe Quantum Dots/g-C₃N₄ Heterostructure for Efficient H₂ Production under Visible Light Irradiation.

ABSTRACT: Novel photocatalysts -CdSe quantum dots (QDs)/g-C₃N₄- 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-C₃N₄ photocatalysts exhibited remarkably enhanced photocatalytic activity for visible-light-induced H₂ evolution compared to pristine g-C₃N₄ and CdSe QDs and addition of 13.6 wt % CdSe QDs into the composite photocatalyst generated the highest H₂ production rate. The enhanced photocatalytic performance of CdSe QDs/g-C₃N₄ 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-C₃N₄ photocatalysts but also contribute to the design for heterostructures.

SUBMITTER: Zhong Y

PROVIDER: S-EPMC6643951 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature

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CdSe Quantum Dots/g-C3N4 Heterostructure for Efficient H2 Production under Visible Light Irradiation.

Zhong Yunqian Y Chen Weiwei W Yu Shan S Xie Zhanghui Z Wei Shiqian S Zhou Ying Y

ACS omega 20181219 12

Novel photocatalysts -CdSe quantum dots (QDs)/g-C3N4- 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-C3N4 photocatalysts exhibited remarkably enhanced photocatalytic activity for visible-light-induced H2 evolution compared to pristine g-C3N4 and CdSe QDs ...[more]

PMID: 31458373

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