Preparation of 2D supramolecular material doping with TiO2 for degradation of tetracycline

Anatase TiO2 photocatalyst supported on [BMPP]2[2D-Mo18O56] (BMPP = 1, 3-bis(4-methylpyridine) propane dibromide) was successfully prepared by hydrothermal method. The composites were characterized by field emission scanning electron microscopy (SEM), X-ray diffractometer (XRD), infrared spectroscopy (IR) and energy-dispersive X-ray spectrometer (EDS). The results show that the high content anatase nanoparticles are uniformly loaded on the polyacid supramolecules to form the composite material. The photocatalytic activity of TiO2/Mo9O28-BMPP towards the tetracyclines (TCs), a model pollutant, has been investigated. The results show that under a 500W high-pressure xenon lamp, 0.15 g TiO2/MoB can degrade 97% of 20 mL (25 mg/L) Tc after 115 min, showing high catalytic activity. In addition, 0.15-TiO2/MoB can be easily separated from the reaction system by centrifugation, and the catalyst still maintains high photocatalytic activity after 3 cycles of tests under the same conditions. This shows that it has the potential for recycling. This research provides a new way for the development of new supported catalysts. •Rare 2D-Mo18O56 supramolecule doping with TiO2 was synthesized conveniently.•The TC photodegradation by the composite material is recyclable and sustainable.•Hole (h+) and O2− are the main active substance for photocatalytic degradation.