Developing an efficient heterogeneous Fenton-like synergistic photocatalyst is paramount for degrading organic pollutants. Here, based on two types of g-C₃N₄ quantum dots (CNQDs) with different fluorescence properties, two kinds of composites (CNQDs/ FeOOH) were fabricated by using a facile method. These composites were used as efficient photo-Fenton catalysts for the treatment of organic pollutants. The composites showed enhanced photocatalysis, Fenton, and photo-Fenton in the degradation of tetracycline (TC), p-nitrophenol (PNP), and 2,4-dinitrophenol (2,4-DNP) compared with pure FeOOH. The degradation efficiencies of composites for TC was up to 89% in 2 min, that for PNP was up to 90% in 10 min, and that for 2,4-DNP was up to 90% in 5 min. Finally, the photo-Fenton catalytic mechanism was discussed on the basis of the reactive radical experiments. The results reported herein provide a strategy for degrading organic pollutants efficiently.

开发一种高效的非均相类芬顿协同光催化剂对于降解有机污染物至关重要。在此，基于两种具有不同荧光特性的gC ₃ N ₄量子点（CNQDs），采用简便的方法制备了两种复合材料（CNQDs/FeOOH）。这些复合材料被用作处理有机污染物的高效光芬顿催化剂。复合材料在降解四环素（TC）中表现出增强的光催化、芬顿和光芬顿，p-硝基苯酚 (PNP) 和 2,4-二硝基苯酚 (2,4-DNP) 与纯 FeOOH 相比。复合材料对TC的降解效率在2 min内达到89%，对PNP在10 min内达到90%，对2,4-DNP在5 min内达到90%。最后，在反应自由基实验的基础上，讨论了光芬顿催化机理。本文报道的结果提供了一种有效降解有机污染物的策略。