Green synthesis of Titanium(IV) oxide with Covalent organic frameworks hybrid under ultrasonic irradiation

In this study, the novel Titanium(IV) oxide:covalent organic frameworks (TiO2:COF) hybrid were preapred and characterized by using various methods. In this regard, the functionalization of TiO2 nanoparticles (NPs), COF, and TiO2:COF hybrid were validated by Fourier transform infrared spectroscopy (FT-IR). In addition, Field emission scanning electron microscopy (FE-SEM) analysis further confirmed the morphology of each sample. While in the case of TiO2 NPs the spherical morphology was observed, for COF the whisker-shaped images implied its successful synthesis. More importantly, after the preapartion of TiO2:COF hybrid, the complete change was observed in morphology, indicating the prepared suitable hybrid. On top of that, X-Ray diffraction spectra (XRD) was conducted at low and wide angles. Accordingly, the presence of TiO2 NPs between the layers of formed COF was confirmed