Catalytic oxidation is an efficient route for synthesizing oxygenated compounds such as epoxides and aldehydes. However, developing cost-effective, environmentally friendly selective gram-scale catalysts, in full agreement with circular economy green chemistry principles, remains a significant challenge. Herein, we report on MFe12O19 magnetic nanoparticles (MNPs) novel, magnetically recoverable catalyst the of olefins. Three different (M = Cu, Sn Sr) MNPs were synthesized using...

Various ratio of Co‐Ag supported on ZnO have been evaluated in the selective catalytic oxidation styrene to benzaldehyde, using H 2 O as an oxidant. The catalysts were prepared by a sol‐gel process and characterized XRD, FT‐IR, TG‐DTG, BET, SEM/EDX. performance catalyst was investigated under different parameters such solvent, temperature, substrate/oxidant molar ratios, reaction time, doping percent. Zn 1− x − y Ag Co exhibit good activity high selectivity towards benzaldehyde (95%) with...

Herein, a highly efficient magnetically separable hybrid GO/SrFe12O19 nanocomposite was synthesized via dispersing M-type strontium hexaferrite (SrFe12O19) on graphene oxide (GO) sheets. First, SrFe12O19 nanoparticles (NPs) and GO sheets were prepared chemical coprecipitation oxidation of graphite powder, respectively. Chemically reduced (rGO) rGO/SrFe12O19 also for comparison purposes. Thereafter, the nanostructured materials explored by XRD, FTIR, FESEM-EDX, BET, Zetasizer analyses. All...

An organoselenide compound was synthesized starting from β-pinene. The activity of this complex towards allylic chlorination has been studied.

We report the preparation of palladium nanoparticles supported on mesoporous natural phosphate (Pd@NP) using a wetness impregnation method. The prepared catalyst was characterized various techniques. Furthermore, reduction and followed UV–visible spectra. Based Scherrer equation, crystallite size as‐synthesized 10.88 nm. performance synthesized investigated in 4‐nitrophenol as model substrate to 4‐aminophenol NaBH 4 hydrogen source. Moreover, catalytic nitroarenes studied monitored...

In this study, a modified carbon paste electrode with silver particles (Ag–CPE) was used for ofloxacin (OFL) detection enhanced over-potential low concentrations. The incorporation of on confirmed by scanning electron microscopy. Electrochemical behavior at (CPE) and Ag–CPE studied using cyclic voltammetry, chronoamperometry electrochemical impedance spectroscopy. OFL interaction Ag+ derived from the oxidation during anodic scan has been investigated under different conditions. strong...

Magnetically separable strontium hexaferrite SrFe 12 O 19 was prepared using the chemical coprecipitation method, and nanostructured material characterized by X-ray diffraction, scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), BET analysis. The SEM images showed homogeneity of composition uniform distribution size morphology. pore nanomaterial its specific area were determined measurements. Strontium exhibited a strong magnetic field, which is highly suitable in...

Co-Ag supported on the SiO 2 catalyst was synthesized by sol-gel method and characterized using XRD, FT-IR, TG-DTG, BET, CV, SEM/EDX analysis. The catalytic performance of resulting examined oxidation mono sesquiterpenic olefins hydrogen peroxide tert -butyl as oxidant agents. Various parameters such amount, temperature, solvents have been studied. showed a high activity, selectivity, recyclability for selected reaction.

Various ratios of palladium nanoparticles supported on mesoporous natural phosphate (Pd@NP) were prepared using the wetness impregnation method. The catalysts characterized by IR, XRD, CV, SEM, EDX, XRF, TEM and BET analysis. reduction preparation afford a crystallite size 10.88 nm. performance synthesized catalyst was investigated in solvent‐free dehydroaromatization α‐, β‐ γ‐himachalene mixture from Cedrus atlantica oil as model substrate. In order to achieve an efficient selective...

Abstract The complexation energies of H3BNHnCl3−n (n= 3-0) complexes and the proton affinities NHnCl3−n compounds have been computed at G2(MP2) level theory. results show that successive chlorine substitution on ammonia decreases both basicity ligands stability complexes. findings are interpreted in terms rehybridisation nitrogen lone-pair orbital. NBO partitioning scheme shows variation N-H N-Cl bond lengths, upon complexation, is due to “s” character these bonds.

In the present work, graphene oxide (GO) reduced by ethyl acetate was used as modifier of graphite electrode (rGO-CPE) for determination Ciprofloxacin (Cipro). The rGO-CPE characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). electrochemical behavior Cipro performed in phosphate buffer solution (0.1 mol/L PBS, pH 7). Under optimized parameters, obtained detection limit is (DL=2.18 × 10−9 mol/L). developed sensor showed excellent repeatability, estimated terms...

A mild and convenient method for the allylic chlorination of naturally occurring terpenic olefins was investigated in presence different supported non-supported Lewis acid catalysts. The reaction has been tested on carvone as a model substrate sodium hypochlorite chlorine donor. scope limitations transition metal-based catalysts, stoichiometry, structure were evaluated. Among iron precursors used, FeCl3 FeCl2 provide promise general approach to or vinylic reaction. Various examined...

A facile wet‐chemical protocol for the synthesis of bimetallic CuPd alloy nanoparticles (NPs) anchored on mesoporous graphitic carbon nitride (m‐gCN), serving as both stabilizer and support material, was presented herein. The allowed to synthesize nearly monodisperse NPs with an average particle size 3.9 ± 0.9 nm without use any additional surfactants prepare CuPd/m‐gCN nanocatalysts different Cu/Pd compositions (Cu 25 Pd 75 /m‐gCN, Cu 35 65 16 74 32 68 10 90 50 /m‐gCN). After detailed...