Fe3O4 nanoparticle supported Ni(II) complexes: A magnetically recoverable catalyst for Biginelli reaction

Ag2O/GO/TiO2 Composite Nanostructure: an efficient heterogeneous catalyst for one pot synthesis of Bis (dihydropyrimidinone) and tetrahydro-4H-chromenes derivatives

“…A wet chemical technique was utilized to synthesize Ag 2 O nanoparticles according to the literature [32]. In a typical synthesis process, 80 mL of a 0.005 M silver nitrate (AgNO 3 ) aqueous solution was heated 60 C. After that, 20 mL of a 0.025 M sodium hydroxide aqueous solution was added drop by drop to the prepared AgNO 3 solution under continuous magnetic stirring at 60 ˚C for 2 h. After cooling to room temperature, the formed precipitate was collected by a centrifuge with a speed of 3000 rpm, washed with ethanol several times, and dried at a constant temperature of 40 ˚C at 24 h.…”

Ag2O/GO/TiO2 Composite Nanostructure: An Efficient Heterogeneous Catalyst for one Pot Synthesis of Bis (Dihydropyrimidinone) and Tetrahydro-4H-chromenes Derivatives

“…A wet chemical technique was utilized to synthesize Ag2O nanoparticles according to the literature [32]. In a typical synthesis process, 80 mL of a 0.005 M silver nitrate (AgNO3) aqueous solution was heated 60 ˚C .…”

“…Transition metal nanoparticles have received a great deal of attention due to a viable alternative to conventional materials in the field of catalyst. Such a new nano catalysts for biginelli reaction are Nano-TiCl4.SiO2 [31], Fe3O4 nanoparticle supported Ni (II) complexes [32], Niobium Nano catalyst, [33] Fe3O4-MWCNT nanocomposite [34], Mesoporous ZnO/AlSBA-15 (7) Nanocomposite [35], Magnetic core-shell Carrageenan moss/Fe3O4, [36] Mesoporous silica nano composite, [37] Fe3O4@ PVA polymeric magnetic nano composite [38] and Magnetic nanoparticles supported imidazolium-based ionic liquids [39].…”

A PANI-Fe3O4@ZnO nanocomposite: a magnetically separable and applicable catalyst for the synthesis of chromeno-pyrido[d]pyrimidine derivatives

“…MNP-supported catalysts have also been extensively used in organic transformations. [18][19][20][21][22][23] Recent intensive developments in the eld of supported nanomaterials have mainly focused on polymer-bound nanostructures due to their essential applications in photocatalysis, 24,25 superhydrophobic materials, 26 organic conductors, electromagnetic interference shielding, etc. 27 Polyaniline (PANI) is a highly promising polymer for developing novel catalyst supports owing to its energy band gap of 2.8 eV, 28 good stability, corrosion protection, nontoxicity, great intrinsic redox potential, and facile and low-cost synthesis.…”