A graphitic carbon nitride (g-C₃N₄-MCy) photocatalyst was prepared by thermal condensation of melamine and cyanuric acid with equal proportions. The photocatalyst was characterized by Fourier transform infrared spectroscopy (FTIR), Specific surface area (SSA), X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), Transmission electron microscope (TEM), and DRS–UV–Vis spectroscopic methods. We studied the photo-degradation kinetics of 4-nitrophenol using a g-C₃N₄-MCy. Four parameters were applied including initial concentration of 4-nitrophenol, amount of catalyst, dissolved oxygen content, and photon flux. The reaction rate constant was shown to be correlated with the 4-nitrophenol concentration and also with a direct increase in photon flux, and dissolved oxygen concentration. The following rate of photo-degradation for 4-nitrophenol was achieved by kinetic modeling: $\text{r}={\text{k}}_{\text{a}\text{p}\text{p}}^{\text{'}}{\text{I}}_{\text{a}}(\frac{4.032\left[4.\text{n}.\text{p}\right]}{1+4.032{\left[4.\text{n}.\text{p}\right]}_0})(\frac{0.570\left[{\text{O}}_2\right]}{1+0.570\left[{\text{O}}_2\right]})$

通过使三聚氰胺和氰尿酸等比例热缩合，制得石墨氮化碳（gC ₃ N ₄ -MCy）光催化剂。通过傅里叶变换红外光谱（FTIR），比表面积（SSA），X射线衍射（XRD），场发射扫描电子显微镜（FESEM），透射电子显微镜（TEM）和DRS–UV–Vis对光催化剂进行了表征。光谱方法。我们使用gC ₃ N ₄研究了4-硝基苯酚的光降解动力学-MCy。应用了四个参数，包括4-硝基苯酚的初始浓度，催化剂量，溶解氧含量和光子通量。已显示反应速率常数与4-硝基苯酚浓度相关，并且还与光子通量和溶解氧浓度的直接增加相关。通过动力学建模，获得了以下4-硝基苯酚的光降解速率：$\text{[R}={\text{ķ}}_{\text{一种}\text{p}\text{p}}^{\text{'}}{\text{一世}}_{\text{一种}}（\frac{4.032\left[4。\text{ñ}。\text{p}\right]}{\mathrm{1个}+4.032{\left[4。\text{ñ}。\text{p}\right]}_0}）（\frac{0.570\left[{\text{Ø}}_2\right]}{\mathrm{1个}+0.570\left[{\text{Ø}}_2\right]}）$