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- W4220794753 abstract "Few-layered polymeric carbon nitride (PCN) nanosheets with large specific surface area and effective charge/electron transport pathway have emerged as promising photocatalysts. However, PCN nanosheets normally exhibit enlarged bandgap, structural defects, and easy agglomeration. Herein, we report an intermediate-induced strategy for synthesizing red PCN nanosheets with a crystalline free self-assembly (CFSA) architecture, exhibiting a three-dimensional (3D) structure, minimum structural defects, small curved nanosheet subunits, and abundant reactive sites. The careful tuning of the condensation degree and repolymerization ability of intermediates affords CFSA PCN with an optimal 3D structure and optical properties, enabling the synergistic optimization of light absorption, charge mobility, and surface reactions during photocatalysis. The catalyst shows a superior H 2 evolution rate of 14665 μmol g −1 h −1 (Pt 1.1 wt%), outperforming those of pristine bulk and nanosheet-structured PCN. This work provides a facile intermediate-induced strategy for guiding the design and synthesis of novel PCN-based photocatalysts. Red PCN nanosheets with a crystalline free self-assembly architecture featuring continuous 3D structure, minimum structural defects, small curved nanosheet subunits, and abundant reactive sites are prepared via a novel intermediate-induced strategy. The synergistic optimization of light absorption, charge mobility, and surface reactions results in superior photocatalytic hydrogen evolution performance. • Red PCN nanosheets with CFSA architecture are synthesized by intermediate-induced strategy. • The U350 intermediate can induce the formation of CFSA PCN nanosheets with optimal 3D architecture and optical properties. • The 3D CFSA architecture can optimize the light absorption, charge mobility, and surface reactions during photocatalysis. • The 3D CFSA PCN nanosheets exhibit greatly promoted hydrogen evolution activity." @default.
- W4220794753 created "2022-04-03" @default.
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- W4220794753 date "2022-08-01" @default.
- W4220794753 modified "2023-10-17" @default.
- W4220794753 title "Intermediate-induced repolymerization for constructing self-assembly architecture: Red crystalline carbon nitride nanosheets for notable hydrogen evolution" @default.
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- W4220794753 doi "https://doi.org/10.1016/j.apcatb.2022.121323" @default.
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