Design and Preparation of Nano-ZnO/Ag Composite for Catalytic Performance in Synthesis of Benzo(g)chromenes
نویسندگان
1 Department of Clinical Laboratories, College of Applied Medical Sciences, University of Kerbala, Iraq
2 College of Applied Medical Sciences, University of Kerbala, Kerbala, Iraq
3 University of Kerbala College of Engineering Prosthetics and Orthotics Engineering Department
doi
10.22052/JNS.2025.04.088چکیده
In this current research, the nano-sized ZnO/Ag composite was prepared through hydrothermal method. The as-prepared nano-sized composite was characterized by different methods, such as: FE-SEM (field emission scanning electron microscopy), EDX (Energy Dispersive X-Ray), FT-IR (Fourier transform infrared), and XRD (X-ray diffraction) analysis. The XRD outcome shows that the designed nano-sized ZnO/Ag composite was formed with hexagonal shape and high crystallinity. Also, the FE-SEM images displayed that the average particle size of nano-sized ZnO/Ag composite was obtained about 72 nm. Moreover, FT-IR spectroscopy confirm the presence of ZnO along with silver bands. A three-component reaction of cyanoacetonitrile, different benzaldehydes, and hennatannic acid have been done in the existence of designed nano-sized ZnO/Ag composite as a robust heterogeneous nanocatalyst to prepare benzo(g)chromenes. FT-IR, NMR, and melting point techniques were used to confirm the formation and purity of final products. The obtained compounds were produced with good to excellent yields (75-93 %) in short time (75-95 min) under reflux conditions.
