This research suggests a green method for synthesizing hybrid magnetic nanocomposites that can be used as reductant and stabilizing agent immobilizing metal nanoparticles (NPs). The central idea is the modification of NPs using Rubia tinctorum extract, which consists numerous carbonyl phenolic hydroxyl functional groups to increase adsorption metals chelate silver ions, decrease ions by Ag NPs, in situ. Thus, suggested catalyst preparation process does not require toxic reagents, additional...

A facile and green route for the synthesis of palladium nanoparticles (Pd‐NPs) was developed utilizing non‐toxic renewable natural tea extract as reducing, stabilizing capping agent. The as‐prepared Pd‐NPs@Oak Gum catalyst characterized using UV–visible spectroscopy, X‐ray diffraction, Fourier transform infrared field emission scanning electron microscopy, transmission microscopy energy dispersive spectroscopy. could be used an efficient heterogeneous Suzuki coupling reactions between...

Surface functionalization of magnetic nanoparticles is an elegant way to bridge the gap between heterogeneous and homogeneous catalysis. We have conveniently loaded sulfonic acid groups on amino‐functionalized Fe 3 O 4 affording sulfamic acid‐functionalized (MNPs/DAG‐SO H) as active stable magnetically separable acidic nanocatalyst, which was characterized using X‐ray diffraction, Fourier transform infrared energy‐dispersive spectroscopies, scanning transmission electron microscopies,...

Abstract Tannic acid, as a humic‐like substance with phenolic hydroxyl and carbonyl functional groups, can modify surface of Fe 3 O 4 NPs. Moreover, it improve properties capacity for adsorption reduction palladium ions through complexing them, in aqueous solutions. Therefore, @TA NPs have potentials reducing, stabilizing immobilizing nano particles to generate novel magnetic nanocatalysts. Inductively coupled plasma (ICP), transmission electron microscopy (TEM), scanning (SEM), X‐ray...

Abstract Silver nanoparticles were immobilized on magnetic polyallylamine (PAA) decorated g-C 3 N 4 by using Heracleum persicum extract as a biological reducing and stabilizing agent. The resulting nanocomposite, Fe O -g-C -TCT-PAA-Ag, was then characterized BET, VSM, XRD, TGA, FTIR, TEM, EDS ICP. catalytic performance of the synthesized nanocatalyst considered in reduction rhodamine B, methyl orange presence sodium borohydride aqueous medium at room temperature. results showed that...

Abstract Using natural materials, i.e. halloysite nanoclay that is a biocompatible naturally occurring clay and Heracleum persicum extract can serve as green reducing agent, novel magnetic catalyst, Fe 3 O 4 /Hal-Mel-TEA(IL)-Pd, has been designed fabricated. To prepare the was first magnetized (magnetic particles with mean diameter of 13.06 ± 3.1 nm) then surface functionalized melamine, 1,4 dibromobutane triethanolamine to provide ionic liquid on (5 wt%). The latter used support immobilize...

Abstract This current study involves the novel synthesis of Au nanoparticles (Au NPs) decorated biguanidine modified mesoporous silica KIT-5 following post-functionalization approach. The tiny NPs were being stabilized over in situ prepared ligand. high surface area material was characterized using analytical techniques like Fourier Transformed infrared (FT-IR) spectroscopy, N 2 -adsorption–desorption isotherm, Scanning Electron Microscopy (SEM), Transmission (TEM), Energy Dispersive X-ray...

This paper reports the green and in situ preparation of Fe 3 O 4 @SiO 2 ‐Ag magnetic nanocatalyst synthesized using safflower ( Carthamus tinctorius L.) flower extract without addition any stabilizers or surfactants. The catalytic performance resulting was examined for reduction 4‐nitrophenol (4‐NP), methylene blue (MB) methyl orange (MO) an environment‐friendly medium at room temperature. main factors such as pH, temperature amount catalyst influencing were studied. apparent rate constants...

The current study suggests a convenient synthesis of in situ, ecofriendly and well-dispersed palladium nanoparticles with narrow small dimension distributions on graphene oxide (GO) surface using Rosa canina fruit extract as stabilizer reducing agent without the addition any other stabilizers or surfactants. as-synthesized nanocatalyst (Pd NPs/RGO) was assessed XRD, UV-vis, FE-SEM, EDS, TEM, ICP WDX. obtained heterogeneous showed catalytic performance for 4-nitrophenol (4-NP), rhodamine B...

Abstract Amines can be applied in the synthesis of various important compounds such as dyes, drugs, polymers, pharmaceutical products, and biologically active materials. The significant subject preparation amines is selection most effective heterogeneous catalyst to get best catalytic efficiency, stability, recoverability, reusability. For this target, we prepared new alginate magnetically recoverable nanocatalyst by stabilization Ag nanoparticles on surface halloysite (HS)...