Back to Search Start Over

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.

Authors :
Cui, Xiaoxia
Ji, Xufeng
Zhang, Xuan
Ding, Xing
Chai, Bo
Ding, Deng
Yang, Yi
Zhang, Xiaohu
Chen, Hao
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