Preparation of UiO-66-NH2 supported copper catalyst andits catalytic activity on alcohol oxidation

in this study,a composite of Cu-Cu2O/UiO-66-NH2based on a metal-organic framework(MOF)was suc-cessfully prepared by solvothermal method,and it was comprehensively characterized by Fourier transform infraredspectroscopy(FTIR),X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microsco-py(TEM),and X-ray photoelectron spectroscopy(XPS).The effects of solvent,temperature,and catalyst loading onthe oxidation of benzyl alcohol to benzaldehyde were investigated using air as an oxidant.The composite catalystshowed excellent catalytic performance,and benzyl alcohol could be quantitatively converted to benzaldehyde at60degree celsius for5h.Additionally,other alcohol substrates such as benzylic alcohols,allylic alcohols,and heteroaryl alco-hols,were selectively transformed into the corresponding aldehydes in excellent yields.Notably,the activity of thecatalyst was almost unchanged after three cycles of recycling,demonstrating good stability and reusability