Journal
CHEMICAL ENGINEERING JOURNAL
Volume 411, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.128446
Keywords
Coordination; Metal-organic frameworks; MXene; Photocatalytic H-2 production
Categories
Funding
- National Natural Science Foundation of China [U1832145, 51972195, 21832005, 21972078, 11374190]
- Young Scholars Program of Shandong University [2016WLJH16, 2020QNQT012]
- Taishan Scholar Foundation of Shandong Province, China
- Key Research and Development Program of Shandong Province [2019GGX103026]
- Project for Scientific Research Innovation Team of Young Scholar in Colleges and Universities of Shandong Province [2019KJA009]
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Efficient metal-organic frameworks (MOFs) for photocatalytic H-2 production from water have gained significant attention, but their poor conductivity limits their activity. A Ti-based MOF composite (Ti3C2@MIL-NH2) was developed, showing superior H-2 evolution performance with a high rate. Intimate interfacial contact between Ti3C2 and MIL-NH2 accelerates electron transfer and improves photo-generated charge separation efficiency.
The design and development of efficient metal-organic frameworks (MOFs) for photocatalytic H-2 production from water have gained significant attention. However, the photocatalytic activity of MOFs is greatly limited by the poor conductivity. Herein, a Ti-based MOF (MIL-NH2) are in-situ grown onto layered Ti3C2 MXene, and the latter acts as the Ti source at the same time. The obtained composite (Ti3C2@MIL-NH2) displays superior H-2 evolution performance with a rate as high as 4383.1 mu mol h(-1) g(-1), which is much higher than the other MOF based materials as far as we know. Combined analysis suggests that the Ti atom in Ti3C2 coordinates with the -NH2 group in MIL-NH2. This intimate interfacial contact is crucial for accelerating electron transfer and improving the photo-generated charge separation efficiency.
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