Nanostructure of Bimetallic Modified HMS Zeolite and Its Catalytic Effect on Phenol Degradation

In this paper, phenol was used as the material to be treated, and HMS molecular sieve was used as the catalyst for the catalytic treatment of the material. HMS, Ti-HMS, Ce-HMS and composite modified Ce/Ti-HMS molecules were used to prepare sieved catalysts. Simulated phenol-containing wastewater with phenol as the main component is treated. The structure of the molecular sieve and its elements and contents were characterized by field emission scanning electron microscope; the morphology of atoms or molecules in the material was characterized by X-ray diffractometer; the chemical bonds in the molecular structure were characterized by Fourier transform infrared spectroscopy. The change of vibration peak was analyzed, and the change of surface and skeleton structure was analyzed; the absorbance of the substance to be tested to visible light was measured by ultraviolet–visible diffuse reflectance method. The experiment was optimized by response surface methodology, and the oxidation of Ce 3+ was detected by infrared tracking, and the reaction mechanism of phenol catalytic degradation was analyzed. The active sites that determine the catalytic performance of the composite catalyst were studied by DFT calculations, which further confirmed that the bimetallic modified zeolite has better catalytic effect.