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Cobalt coordinated olefin-linked covalent organic frameworks toward highly efficient photocatalytic hydrogen production.
Cobalt coordinated olefin-linked covalent organic frameworks toward highly efficient photocatalytic hydrogen production.
- Source :
-
Applied Surface Science . Mar2025, Vol. 684, pN.PAG-N.PAG. 1p. - Publication Year :
- 2025
-
Abstract
- [Display omitted] • M2+ (M = Fe、Co、Ni) was anchored in sp2c-COF dpy by post-metalation strategy. • sp2c-COF dpy -Co exhibited quick photogenerated e-/h+ separation efficiency. • The optimized Pt@sp2c-COF dpy -Co exhibited a high HER rate of 324.4 μmol/h. • The AQY of Pt@sp2c-COF dpy -Co reached to 2.1 % at 500 nm. Covalent organic frameworks (COFs) have emerged as a crystalline porous materials for photocatalytic hydrogen production. However, the design of efficient COF-based catalyst for satisfactory solar-to-hydrogen energy conversion is still challenging. Here, cobalt was anchored on the bipyridine moieties in the framework of olefin-linked sp2c-COF dpy by convenient post-metalation (sp2c-COF dpy -Co). Experimental results showed that sp2c-COF dpy -Co exhibited wider visible light absorption region and quicker photogenerated e-/h+ separation efficiency than sp2c-COF dpy. Photocatalytic experiments revealed that sp2c-COF dpy -Co was highly efficient for H 2 production after photodeposition of Pt co-catalyst (Pt@sp2c-COF dpy -Co). The optimized Pt@sp2c-COF dpy -Co exhibited a high photocatalytic H 2 production rate of 324.4 μmol/h under visible light irradiation in the presence of 1.0 wt% Pt as co-catalyst, which was higher than Pt@sp2c-COF dpy -Fe and Pt@sp2c-COF dpy -Ni, and it was much higher than that of its counterparts and many reported works. This work provides new insights into design of highly efficient COF-based catalyst for photocatalytic H 2 production. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 684
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 181573347
- Full Text :
- https://doi.org/10.1016/j.apsusc.2024.161988