Magnetic cobalt oxide supported organosilica-sulfonic acid as a powerful nanocatalyst for the synthesis of tetrahydrobenzo[a]xanthen-11-ones.

ABSTRACT: A novel core-shell structured magnetic cobalt oxide supported organosilica-sulfonic acid (Co₃O₄@SiO₂/OS-SO₃H) nanocomposite is prepared through a low-cost, simple, and clean method. The characterization of Co₃O₄@SiO₂/OS-SO₃H was performed by using Fourier transform infrared (FT-IR) spectroscopy, thermal gravimetric analysis (TGA), powder X-ray diffraction (PXRD), energy dispersive X-ray (EDX) spectroscopy, scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), and transmission electron microscopy (TEM). The TGA and FT-IR results illustrate the high stability of the designed nanocomposite. The SEM image showed a size of about 40 nm for the Co₃O₄@SiO₂/OS-SO₃H nanoparticles. Furthermore, according to the result of VSM analysis, the saturation magnetization of this nanocomposite was about 25 emu/g. This novel material was used as an efficient nanocatalyst for the synthesis of biologically active tetrahydrobenzo[a]xanthen-11-one derivatives. These products were obtained in high to excellent yields under green conditions. The recoverability and reusability of this catalyst were also investigated under applied conditions.

SUBMITTER: Ardeshirfard H 

PROVIDER: S-EPMC10465481 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature