Co₃O₄-g-C₃N₄ hybrid catalysts with different levels of cobalt doping were successfully synthesized via a facile one-pot thermal condensation method. The composition and morphology of the as-prepared Co₃O₄-g-C₃N₄ were characterized by XRD, FT-IR and SEM techniques, and evaluated for the catalytic oxidation of 3′,3′,5′,5′-tetramethylbenzidinein (TMB) in the presence of hydrogen peroxide, focusing on the nature of peroxidase-like activity. Catalytic kinetic analysis reveals that the optimized 2.0wt%Co₃O₄-g-C₃N₄ shows affinity toward TMB higher than g-C₃N₄, having activity comparable to that of horseradish peroxidase. This is plausibly due to the synergistic effect of Co₃O₄ and g-C₃N₄ as well as the structure of Co₃O₄-g-C₃N₄. In rhodamine B degradation, 2.0wt%Co₃O₄-g-C₃N₄ displays a reaction rate four times that of g-C₃N₄. The results reveal that Co₃O₄-g-C₃N₄ is a promising artificial peroxidase mimic efficient for degrading water contaminants.

通过一种简便的一锅热缩合法成功地合成了钴掺杂量不同的Co ₃ O ₄ -gC ₃ N ₄杂化催化剂。通过XRD，FT-IR和SEM技术表征了所制备的Co ₃ O ₄ -gC ₃ N ₄的组成和形貌，并对其3'，3'，5'，5'-四甲基联苯胺的催化氧化进行了评价。 （TMB）在过氧化氢的存在下，着重于过氧化物酶样活性的性质。催化动力学分析表明优化的2.0wt ％Co ₃ O ₄ -gC ₃ N ₄表现出对TMB的亲和力高于gC ₃ N ₄，具有与辣根过氧化物酶相当的活性。这可能是由于Co ₃ O ₄和gC ₃ N ₄的协同作用以及Co ₃ O ₄ -gC ₃ N _4的结构。在若丹明B的降解中，2.0wt ％Co ₃ O ₄ -gC ₃ N ₄的反应速率是gC ₃ N _4的四倍。结果表明，Co ₃ O ₄ -gC ₃ N_图4是有效降解水污染物的有希望的人工过氧化物酶模拟物。