This study introduces a green and efficient method for preparation of biologically-active substituted 4H-pyrans using the one-pot three-component reaction of aromatic aldehydes, dimedone and malononitrile in the presence of cobalt oxide nanoparticles. Co3O4 nanoparticles were used as an efficient catalyst for the synthesis of polyhydroquinoline derivatives by the reaction ...

In this study, the magnetic Cu/CuFe2O4 nanocomposite was successfully prepared by a one-pot solvothermal method and evaluated for catalytic activity in 4-nitrophenol (4-NP) reduction reaction methylene blue (MB) degradation reaction. The structure, surface morphology, properties of catalyst were characterized using several physicochemical methods such as Powder X-ray diffraction (PXRD), Fourier...

A series of copper and cobalt substituted nanospinel ferrites have been synthesized by the hydrothermal method. These compounds were characterized by FT-IR, XRD, EDX, SEM and VSM techniques. All of the synthesized nanospinel ferrites were found to be highly efficient and magnetically recoverable in the solvent-free synthesis of substituted 2,6-(2-hydroxybenzyl)-phenols (trisphenols). A wide ran...

In order to realize the efficient removal of sulfamethazine (SMZ) and overcome recycling difficulty catalysts in a heterogeneous catalytic ozonation process, low-cost natural zeolite loaded with CeO 2 Fe 3 O 4 (FC/HZ) was synthesized by co-precipitation method. The FC/HZ catalyst could completely degrade SMZ 39.6% TOC through ozonation. Moreover, exhibited high activity under wide pH range poss...

A facile and efficient synthesis of bis(indolyl)methanes derivatives (3a-u) was reported via a condensation reaction of aldehydes and indole in the presence of by silica-supported-3-(triethoxysilyl) propane-1-ammonium chloride catalysis under solvent free conditions. We studied the reaction in different conditions and optimized. The use of just 0.02 g of (silica gel-ammonium salt) is sufficient...