1. Construction of II-type and Z-scheme binding structure in P-doped graphitic carbon nitride loaded with ZnO and ZnTCPP boosting photocatalytic hydrogen evolution.
- Author
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Xu, Xuan, Feng, Xiangbo, Wang, Wei, Song, Kunli, Ma, Dandan, Zhou, Yixuan, and Shi, Jian-Wen
- Subjects
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NITRIDES , *DOPING agents (Chemistry) , *ZINC porphyrins , *CHARGE carriers , *CHARGE exchange , *ZINC oxide - Abstract
[Display omitted] • A ternary heterostructure (ZnPPO) is constructed for photocatalytic H 2 evolution. • ZnPPO presents an enhanced photocatalytic H 2 evolution rate of 31.037 mmol h-1g−1. • A binding structure of Ⅱ-type and Z-scheme has been constructed in ZnPPO. • The binding structure promotes the transfer of photogenerated charge carriers. A ternary heterostructure (ZnPPO) was constructed by loading ZnO and tetrakis (4-carboxyphenyl) zinc porphyrin (ZnTCPP) with P-doped g-C 3 N 4 (PCN). In contrast to binary heterostructures (PCN-ZnO, ZnTCPP-ZnO and ZnTCPP-PCN) and single components (PCN, ZnTCPP and ZnO), ZnPPO has superior photocatalytic activity for H 2 generation from water splitting. It is revealed that a binding structure of Ⅱ-type and Z-scheme has been constructed in ZnPPO, which plays a vital role in transferring photo-excited charge carriers. The significant enhancement of photocatalytic activity in ZnPPO is attributed to the effective transfer of photo-generated electrons and holes between the components of the ternary heterostructure. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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