In this study, we synthesized graphic carbon nitride nanosheets (labeled as CNs) by solid-phase grinding strategy coupled calcination method and then prepared Ag nanoparticles (NPs) loaded CNs composites by photodeposition. The as-prepared Ag/CNs composites presented remarkably enhanced photocatalytic performance and the degradation rate of tetracycline (TC) by Ag/CNs (3[Formula: see text]wt.%) composite is above two times higher than that by pristine CNs under visible light irradiation. The enhanced photocatalytic activity originated from the close contact between Ag and CNs, and the localized surface plasmon resonance (LSPR) effect of Ag. Moreover, the results of radical trapping experiments illustrated that [Formula: see text] plays a dominant role in photocatalytic degradation of TC. This work provides a new way for design novel noble metal modified graphic CN photocatalysts.

中文翻译：

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Ag/氮化碳光催化剂的制备及其对四环素降解的增强光催化性能

在这项研究中，我们通过固相研磨策略耦合煅烧方法合成了图形氮化碳纳米片（标记为 CNs），然后通过光沉积制备了负载 Ag 纳米颗粒（NPs）的 CNs 复合材料。所制备的 Ag/CNs 复合材料具有显着增强的光催化性能，Ag/CNs (3[公式：见正文]wt.%) 复合材料对四环素 (TC) 的降解率是原始 CNs 的两倍以上。可见光照射。增强的光催化活性源于 Ag 和 CNs 之间的紧密接触，以及 Ag 的局域表面等离子共振 (LSPR) 效应。此外，自由基捕获实验的结果表明[公式：见正文]在光催化降解TC中起主导作用。