A series of in-situ carbon-doped TiO₂ (C_x/TiO₂) composites with a porous and crystalline structure were successfully synthesized via one-step and low-temperature calcination of titanium metal-organic framework (MOF), MIL-125(Ti). The resultant materials were comprehensively investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), N₂ adsorption-desorption measurements, UV-vis diffuse reflectance spectrum (DRS), photoluminescence (PL) spectra and photoelectrochemical measurements, and their photocatalytic activities for bisphenol A (BPA) degradation were assessed. Compared with the benchmark TiO₂ photocatalyst (P25), the C_x/TiO₂ composite material with high specific surface, lower band gap, and reduced photogenerated electron hole ratio exhibited outstanding photodegradation activity and durability for BPA, which could be attributed to the combined effect of co-doping of multiple carbon species (substituent carbon and carbonate) and porous structure. During BPA degradation, the holes and superoxide radicals were the primary role oxidative species in the reaction process. Therefore, this new efficient photocatalyst is promising candidate for photodegradation of organic pollutants.

通过一步一步低温煅烧钛金属有机骨架（MIL-125）成功合成了一系列具有多孔性和晶体结构的原位碳掺杂TiO ₂（C _x / TiO ₂）复合材料。 （钛）。通过X射线衍射（XRD），扫描电子显微镜（SEM），X射线光电子能谱（XPS），N ₂吸附-解吸测量，UV-可见漫反射光谱（DRS），光致发光（ PL）光谱和光电化学测量，以及它们对双酚A（BPA）降解的光催化活性进行了评估。与基准TiO ₂光催化剂（P25）相比，C _x/ TiO ₂复合材料具有高的比表面积，较低的带隙和降低的光生电子空穴比，对BPA表现出出色的光降解活性和耐久性，这可能归因于多种碳物种（取代碳和碳酸盐）的共掺杂的联合作用）和多孔结构。在BPA降解过程中，空穴和超氧自由基是反应过程中的主要氧化物质。因此，这种新型的有效光催化剂是有机污染物光降解的有希望的候选者。