Semiconductor/Metal-Organic Framework (BiVO4/NH2–MIL-125(Ti)) for Efficient Photocatalytic Degradation of Rhodamine B Aqueous Solution

Abstract In this work, we designed and fabricated semiconductor/metal-organic framework (BiVO4/NH2–MIL-125(Ti)) as a novel photocatalyst by solvothermal method, and used XRD, SEM, XPS, FT-IR, BET, UV–Vis DRS, and PL spectrum to characterized its unique and structure and property. The photocatalytic degradation activity of all materials was studied via decomposing Rh B. The results displayed that the specific surface area of a series of hybrid catalysts is larger than that of the single BiVO4, and the photocatalytic efficiency of the composite catalyst is much higher than that of pure BiVO4 and NH2–MIL-125(Ti). Among them, Rh B photocatalytic efficiency of BN-4 achieves 98.2%, which is the highest, and about 2.54 and 26.52 folds of pure BiVO4 and NH2–MIL-125(Ti), respectively. At the same time, the BiVO4/NH2–MIL-125(Ti) composite can maintain the photocatalytic activity and structure steady after four cycles, and the possible mechanism of photocatalytic degradation was put forward.