Li Zhen, Zeng Wei, Li Meng-Hua, Zheng Jun-Feng, Fang Xin, Lin Mei-Jin
Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, China.
College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350116, China.
Macromol Rapid Commun. 2021 Dec;42(24):e2100577. doi: 10.1002/marc.202100577. Epub 2021 Oct 17.
Photocatalysis is an efficient and green technology in the environmental protection. Due to the high charge separation and transfer, donor-acceptor (D-A) conjugated polymers attract much attention for their photocatalytic degradations towards organic pollutants. Herein, the authors reported three novel D-A conjugated polymers, named as HPBP, HPTP, and HPF, with heptazine moieties as electron acceptors, while biphenyl, terphenyl, or fluorene moieties as electron donors, respectively, which indeed exhibit a highly efficient photocatalytic degradation towards tetracyclines upon the visible-light irradiation. Among them, the photocatalytic performance of HPF is especially noticeable with the degradation rate up to 87% within 30 min, almost 11 times in comparison to those of pristine g-C N , which is mainly attributed to its high crystallinity and conjugation. For their photocatalytic mechanism, the •O radical anions are regarded as the active species.
光催化是环境保护领域一种高效且绿色的技术。由于具有高电荷分离和转移特性，供体-受体（D-A）共轭聚合物因其对有机污染物的光催化降解性能而备受关注。在此，作者报道了三种新型的D-A共轭聚合物，分别命名为HPBP、HPTP和HPF，它们以七嗪部分作为电子受体，联苯、三联苯或芴部分分别作为电子供体，在可见光照射下确实对四环素表现出高效的光催化降解性能。其中，HPF的光催化性能尤为显著，在30分钟内降解率高达87%，与原始g-CN相比几乎是其11倍，这主要归因于其高结晶度和共轭性。就其光催化机理而言，•O自由基阴离子被视为活性物种。
