Recent years, many scholars have been greatly intrigued by the large amounts of emerging antibiotics pollutants (such as tetracycline, penicillin, etc.) in natural water environments. Photo-Fenton oxidation, a highly advanced oxidation technique, has been seen as a promising way to effectively break down these pollutants by generating a great deal of reactive oxygen species (ROS). Herein, iron phthalocyanine nanodots (FePc)/ultra-thin porous carbon nitride (UPCN) nanocomposites were successfully prepared by thermal polymerization and calcination processes. In the system with a small amount (10 μL) of hydrogen peroxide (H2O2) and natural pH conditions, the 1%-FePc/UPCN nanocatalcatalyst had the best degradation effect, and the TC removal rate reached 89% within 20 min and 99% within 60 min. The excellent performance of the nano-composites is ascribed to the large surface area, multiple active sites, small pore size, easy excitation and fast transfers of photogenerated carriers induced by π-π bond. In addition, the improvement of the degradation of TC is also due to the synergistic effect of the photocatalytic reaction center dominated by UPCN and Fenton reaction center dominated by FePc in the system, simultaneously. In this study, a synergistic dual-reaction center catalytic system was constructed to provide new insights and strategies for the degradation of organic pollutants in natural water environments.

中文翻译：

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酞菁铁纳米点修饰的超薄多孔氮化碳：光催化和 Fenton 反应相结合，实现双通道高效四环素降解


近年来，许多学者对自然水环境中大量新兴的抗生素污染物（如四环素、青霉素等）产生了极大的兴趣。光芬顿氧化是一种非常先进的氧化技术，被视为通过产生大量活性氧 （ROS） 来有效分解这些污染物的一种很有前途的方法。本文通过热聚合和煅烧工艺成功制备了酞菁铁纳米点 （FePc）/超薄多孔氮化碳 （UPCN） 纳米复合材料。在少量 （10 μL） 过氧化氢 （H2O2） 和自然 pH 条件下，1%-FePc/UPCN 纳米催化催化剂的降解效果最好，TC 去除率在 20 min 内达到 89%，在 60 min 内达到 99%。纳米复合材料的优异性能归因于大表面积、多个活性位点、小孔径、易激发和π-π键诱导的光生载流子的快速转移。此外，TC 降解的改善也是由于体系中以 UPCN 为主的光催化反应中心和以 FePc 为主的 Fenton 反应中心同时发挥了协同作用。在本研究中，构建了协同双反应中心催化系统，为自然水环境中有机污染物的降解提供新的见解和策略。