Silver nanoparticles supported on alumina were prepared and tested in the catalytic reduction of various imines to primary and secondary amines and were shown to be exceptionally active and chemoselective. Furthermore, the catalytic activity of the prepared nanocatalyst was also tested in the synthesis of secondary amines from primary amines in a tandem reaction protocol (oxidation-imination-re...

TiC-supported sizeand shape-selected Au nanoparticles with well defined interparticle distances were synthesized by diblock copolymer encapsulation. Atomic force microscopy (AFM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and temperature programmed desorption (TPD) have been used to investigate the correlation between the nanocatalyst morphological/ electron...

A supported nanoparticle is dynamic in reaction conditions, but how this dynamic behavior is influenced by the support remains elusive. Using the stochastic surface walking global optimization method, herein, we report the structure, thermodynamics and catalytic properties of Pt nanoparticles inside and outside a carbon nanotube (CNT). We reveal that confined metal nanoparticles are, surprising...

In the present study, microwave-assisted, optimized, instant, Terminalia bellirica fruit extract-mediated green synthesis of colloidal silver nanoparticles (AgNPs) has been reported. The synthesized AgNPs were characterized by UV-Vis spectroscopy, FTIR, Zetasizer, FESEM, EDX and XRD. The characteristic surface plasmon peak of reaction mixture at 406 nm confirmed the synthesis of AgNPs. The FTIR...

Highly substituted 1,4-dihydropyrano[2,3-c]pyrazole derivatives were synthesized by four-component reaction of aromatic aldehydes, malononitrile, ethyl acetoacetate and various phenylhydrazine, using nickel ferrite as a recyclable nanocatalyst by a grinding method under solvent-free and thermal conditions. The reaction has the advantages of good yields, less pollution, ease of separation of the...

In this study, the study of drying process using energy a convective electromagnetic field (electromagnetic extremely highfrequency) was considered when obtaining nanocatalyst from bentonite trapping substance based on "Zol-gel" technology. Also, layer "Navbahor" is textural description samples, effect heating size microporosity, surface to surface, distribution and chemical composition porosit...

Water electrolysis is one of the most promising approaches for producing hydrogen. However, it has been hindered by sluggishness anodic oxygen evolution reaction. In this work, we fabricated Ru-Co-Mn trimetallic alloy nanoparticles on N-doped carbon support (RuCoMn@NC) via pyrolysis-adsorption-pyrolysis process using ZIF-67 as a precursor. The RuCoMn@NC catalyst exhibited excellent electrocatal...