期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 312, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121374
关键词
Photocatalysis; Hydrogen evolution reaction; Triazine; Conjugated polymer; Donor-acceptor interaction
资金
- National Natural Science Foundation of China [22005149, 21975129]
- Natural Science Foundation of Jiangsu Province [BK20200777]
- Natural Science Foundation of the Higher Education Institutions of Jiangsu Province, China [20KJB430034]
- Science Fund for Distinguished Young Scholars [JC2019002]
- Nanjing Forestry University
In this study, novel triazine-based conjugated polymer photocatalysts were designed and synthesized by introducing electron-drawing 1,3,4-oxadiazole units, demonstrating excellent photocatalytic hydrogen production performance.
The donor-acceptor (D-A) interactions between the triazine ring unit and adjacent substituents is one of the decisive factors that affect the performance of triazine-based conjugated polymer photocatalysts. Herein, we design and synthesize novel conjugated polymers by introducing electron-drawing 1,3,4-oxadiazole units into 1,3,5-triazine-based pi-conjugated skeletons for photocatalytic hydrogen production. Compared with the bulk polymer, the modified photocatalysts show extended visible light harvesting and boosted charge separation. Notably, under the irradiation of full-spectrum solar light, as-synthesized polymer with bi-1,3,4-oxadiazole linkage (denoted as TCP-BOXD) shows a highly improved hydrogen-evolving rate up to 3000 mu mol g(-1) h(-1). Furthermore, DFT calculation reveals that N atoms in the introduced 1,3,4-oxadiazole unit, coupled with those in the triazine ring, act as synergistic bi-active sites for superior photocatalytic hydrogen production. Our findings may help the rational design and controllable synthesis of novel triazine-based conjugated polymers for photocatalysis.
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