Photocatalytic degradation of mixed pollutants in aqueous wastewater using mesoporous 2D/2D TiO2(B)-BiOBr heterojunction

There are multiple contaminants in practical wastewater; and the photodegradation of mixed pollutants is a challenge in the field of photocatalysis. Herein, we design a mesoporous 2D/2D TiO2(B)-BiOBr heterojunction photocatalyst for the photodegradation of mixed pollutants. Such a coupling structure results in an enhancement in the disconnection of photoexcited carriers, and the increase of absorption and reaction sites. The 2D/2D TiO2(B)-BiOBr demonstrates outstanding photocatalytic activity for photodegrading rhodamine B (RhB), methyl orange (MO), tetracycline hydrochloride (TCH), and bisphenol A (BPA) simultaneously under visible light, which is 4.7, 1.4, 23 and 16.4 times as high as that of original BiOBr, respectively. Our work represents a possible solution to devise promising and efficient photocatalysts for the treatment of practical wastewater in the near future.