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Abstract 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 3 N 4 , which is mainly attributed to its high crystallinity and conjugation. For their photocatalytic mechanism, the •O 2 – radical anions are regarded as the active species.
Li et al. (Sat,) studied this question.