Photocatalysis is usually considered as one of the most effective methods for treating non-biodegradable pollutants commonly found in textile wastewater. In this study, the photocatalyst of g-C₃N₄/MIL-53(Fe) was synthesized by the hydrothermal method and applied for the removal of Rhodamine B (RhB) in water. The photocatalytic material was characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer-Emmett-Teller analysis, UV-Vis diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. The results showed that the g-C₃N₄ doped MIL-53(Fe) with 97 wt% of MIL-53(Fe) works effectively under visible light and the presence of oxidants (Na₂S₂O₈). RhB removal efficiency can be more than 99% with 20 mg/L of RhB, 300 mg/L of catalyst, 200 mg/L of Na₂S₂O₈, and pH 3. In addition, the photocatalytic degradation mechanism of RhB with g-C₃N₄/MIL-53(Fe) was also proposed, which could be improved and studied for a wide range of applications in textile wastewater treatment.

光催化通常被认为是处理纺织废水中常见的不可生物降解污染物的最有效方法之一。本研究采用水热法合成了gC ₃ N ₄ /MIL-53(Fe)光催化剂，用于去除水中的罗丹明B (RhB)。通过X射线衍射、傅里叶变换红外光谱、扫描电子显微镜、能量色散X射线光谱、Brunauer-Emmett-Teller分析、UV-Vis漫反射光谱和X射线光电子能谱对光催化材料进行了表征。结果表明，gC ₃ N ₄含有 97 wt% MIL-53(Fe) 的掺杂 MIL-53(Fe) 在可见光和氧化剂 (Na ₂ S ₂ O ₈ )存在下有效工作。RhB 去除率在 20 mg/L、催化剂 300 mg/L、Na ₂ S ₂ O ₈ 200 mg/L 、pH 3 条件下可达到 99% 以上。还提出了gC ₃ N ₄ /MIL-53(Fe)，可以对其进行改进和研究，以用于纺织废水处理中的广泛应用。