A series of functional organic-metal zinc oxide (ZnO) doped graphitic carbon nitride (g-C₃N₄) denoted as ZnO-CN composites were fabricated via a facile mixing and calcination approach. The composition, structure, and morphology of the as-prepared ZnO-CN composites were characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) surface area, fourier transform infrared (FT-IR), field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS), respectively. When loading amount of ZnO is 0.1 and calcination temperature is 650 °C (denoted as ZnO-CN_0.1-650), the kinetic constant of atrazine (ATZ) degradation was 2.73 min⁻¹, which was almost 10.5 times higher than that of ozone alone, exhibiting the highest catalytic ozonation activity. The results of the characterization indicated that ZnO-CN_0.1-650 presents the mesoporous structure in laminated g-C₃N₄ and Zn(II) are strongly coordinated and stabilized within the electron-rich g-C₃N₄ framework. The feasibility of ZnO-CN_0.1-650 for practical application was further evaluated at different catalyst dosages, initial ATZ concentrations, solution pHs, and natural organic matters. Radical scavengers experiments demonstrated that O₂⁻, OH, and ¹O₂ are the dominant reactive radical species. In addition, the composite showed excellent stability for pollutants removal over multiple reaction cycles. A possible mechanism of the enhanced catalytic ozonation activity is attributed to the host-guest interaction between ZnO and g-C₃N₄, as well as the improved meso-porosity, increased surface area, and intensive mass and electron transfer ability ascribed to the electronic and surface properties modification. Overall, the ZnO-CN_0.1-650 composite is demonstrated to be a highly efficient, stable, and recoverable catalyst, which provided a promising alternative in catalytic ozonation.

通过简便的混合和煅烧方法，制备了一系列功能性有机金属氧化锌（ZnO）掺杂的石墨氮化碳（gC ₃ N ₄），表示为ZnO-CN复合材料。制备的ZnO-CN复合材料的组成，结构和形貌通过X射线衍射（XRD），Brunauer-Emmett-Teller（BET）表面积，傅立叶变换红外光谱（FT-IR），场发射扫描进行表征电子显微镜（FESEM），透射电子显微镜（TEM）和X射线光电子能谱（XPS）。当ZnO的负载量为0.1且煅烧温度为650°C（表示ZnO-CN _0.1 -650）时，at去津（ATZ）降解的动力学常数为2.73 min ^-1，这比单独的臭氧高几乎10.5倍，表现出最高的催化臭氧化活性。表征结果表明，ZnO-CN _0.1 -650具有层状gC ₃ N ₄的介孔结构，而Zn（II）在富电子的gC ₃ N ₄骨架内具有很强的配位性和稳定性。在不同的催化剂用量，初始ATZ浓度，溶液pH值和天然有机物的条件下，进一步评估了ZnO-CN _0.1 -650在实际应用中的可行性。自由基清除剂的实验表明，直径：₂ ^-，OH，和¹ Ò ₂是主要的反应性自由基基团。此外，该复合材料在多个反应循环中显示出优异的稳定性，可去除污染物。ZnO与gC ₃ N ₄之间的主体-客体相互作用，以及介孔率的提高，表面积的增加以及归因于电子和电子的密集的质量和电子转移能力，可能归因于催化臭氧氧化活性的提高。表面性质的修改。总体而言，ZnO-CN _0.1 -650复合材料被证明是高效，稳定和可回收的催化剂，为催化臭氧化提供了有希望的替代方法。