Synthesis of noble metal-decorated NH2-MIL-125 titanium MOF for the photocatalytic degradation of acetaminophen under solar irradiation

This work reports the solvothermal synthesis of a titanium-based metal organic framework (NH2-MIL-125(Ti)) and further deposition palladium, platinum silver nanoparticles on its framework, with aim to obtain visible light-driven photocatalysts. The structure NH2-MIL-125 was not affected by incorporation nanoparticles, while textural properties changed depending used. All M/NH2-MIL-125 (M = Pd, Pt, Ag) synthesized materials showed enhanced light absorption in region due effect which were mainly reduced state as confirmed XPS analyses. between 1.8 3.8 nm size metal. They responsible for reduction recombination process, suggested photoluminescence measurements. photocatalytic performance tested degradation acetaminophen (ACE) under simulated solar irradiation. Pt/NH2-MIL-125 achieved highest conversion rate (rate constant 0.0165 min−1), complete contaminant less than three hours. Scavengers studies that O2− radicals play main role followed OH radicals. catalytic stability upon successive reaction cycles. Different water matrices understand common inorganic ions, being presence bicarbonates most detrimental process.