1. Well-designed three-dimensional hierarchical hollow tubular g-C3N4/ZnIn2S4 nanosheets heterostructure for achieving efficient visible-light photocatalytic hydrogen evolution.
- Author
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Chen, Zhihao, Guo, Feng, Sun, Haoran, Shi, Yuxing, and Shi, Weilong
- Subjects
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NANOSTRUCTURED materials , *HYDROGEN production , *BAND gaps , *CHARGE transfer , *ENERGY development , *SOLAR cells , *HYDROGEN as fuel - Abstract
[Display omitted] Photocatalytic water splitting for hydrogen production is an important strategy to achieve clean energy development. In this report, a novel three-dimensional (3D) hierarchical hollow tubular g-C 3 N 4 /ZnIn 2 S 4 nanosheets (HTCN/ZIS) type-Ⅱ heterojunction photocatalyst was successfully prepared and applied for photocatalytic hydrogen production under visible light irradiation. The experimental results reveal that the optimal proportion of HTCN/ZIS with the remarkable photocatalytic H 2 evolution rate of 20738 μmol h−1 g−1 was obtained. The main reasons for the improvement of hydrogen production activity are as follows: (i) this unique tubular hollow structure can effectively enhances the light capturing ability by the multiple light scattering/reflection of incident light in the inner cavity; (ii) the shorten the phase plane transmission distance could reduce the path of charge transfer; (iii) the surface coated a large number of scaly ZnIn 2 S 4 nanosheets can provide abundant reactive sites. Combining the various characterization tests, the enhanced spatial segregation of charge carriers could owning to the intimately interfacial contact and well-matched band gaps structure between g-C 3 N 4 and ZnIn 2 S 4 through the type-II heterojunction. This work provides a new prospect for the construction of a novel 3D hierarchical type-II heterojunction photocatalyst for highly efficient photocatalytic hydrogen production. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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