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Título: | In situ construction of graphdiyne based heterojunctions by a deprotection-free approach for photocatalytic hydrogen generation |
Autor: | Wang, Cong; Han, Xu CSIC ORCID; Xu, Qian; Sun, Yi Ning; Arbiol, Jordi CSIC ORCID CVN; Ghazzal, Mohamed Nawfal; Li, Jian CSIC ORCID | Fecha de publicación: | 21-feb-2023 | Editor: | Royal Society of Chemistry (UK) | Citación: | Journal of Materials Chemistry A 11(7): 3380-3387 (2023) | Resumen: | Graphdiyne (GDY) with a direct bandgap, high charge carrier mobility, and ordered pore structure, is considered an excellent matrix for the construction of heterojunction photocatalysts. However, the traditional fabrication methods for GDY-based heterojunctions require a complicated deprotection of hexakis-[(trimethylsilyl)ethynyl]benzene (HEB-TMS) and usually result in localized heterojunctions. Herein, we developed a facile deprotection-free method to in situ grow GDY on the surface of C3N4 by directly using HEB-TMS as the precursor. Such a method enabled the formation of an integral GDY@C3N4 heterojunction, resulting in a significantly enhanced photocatalytic activity in the visible region. The optimized GDY@C3N4 showed 15.6-fold hydrogen production efficiency compared to pristine C3N4, and outperformed the GDY/C3N4 samples synthesized by other approaches (e.g. physical mixing, hydrothermal treatment and calcination treatment). This study provides a universal and efficient strategy for the design of GDY-based heterojunction photocatalysts for solar-to-hydrogen energy conversion. | Versión del editor: | https://doi.org/10.1039/D2TA09918G | URI: | http://hdl.handle.net/10261/336590 | DOI: | 10.1039/d2ta09918g | ISSN: | 2050-7488 | E-ISSN: | 2050-7496 |
Aparece en las colecciones: | (CIN2) Artículos |
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