Nobel-metal based bimetallic nanoparticles (BNPs) are composed of two different metals presenting heteroatom interactions. In these nanomaterials it is possible to tune the relative composition that allows for modulation electronic and catalytic properties. They great interest their technological industrial applications due properties which may exceed those monometallic analogue structures. A t...

A new carbon paste electrode (CPE) incorporating Ru - nanoparticles (RuNP) stabilized on graphite powder was developed for H(2)O(2) amperometric detection. Cyclic voltammetric measurements, performed in phosphate buffer solutions at different potential scan rates and different potential ranges were carried out in order to evaluate the electrochemical behavior of the CPE-RuNP modified electrodes...

The integrated one-pot synthesis of valuable allylamines and alkylamines from amines, formaldehyde, terminal alkynes is achieved using a single catalyst material. This multifunctional catalytic system composed silica support on which are jointly assembled ruthenium nanoparticles covalently functionalized copper N-heterocyclic carbene (NHC) complexes, introducing new generation immobilized molec...

Ruthenium nanoparticles (2.12 ± 0.72 nm in diameter) were stabilized by the self-assembly of alkyne molecules (from 1-hexyne to 1-hexadecyne) onto the Ru surface by virtue of the formation of Ru-vinylidene interfacial linkages. Infrared measurements depicted three vibrational bands at 2050 cm(-1), 1980 cm(-1) and 1950 cm(-1), which were ascribed to the vibrational stretches of the terminal trip...

Ruthenium, palladium and platinum fall within the group of noble metals that are widely used in catalysis, especially for electrocatalytic production hydrogen. The dominant phase bulk Ru metal is hexagonal close-packed (hcp), which has been studied extensively. However, significantly less attention paid to face-centred cubic (fcc) phases, have observed nanoparticles. In this study, we carried o...

Background Chronic stress induces male reproductive dysfunction; however, the involved mechanisms are not clear. It has been suggested that the gonadotrophin-inhibitory hormone, known as RF-amide related peptide (RFRP) in mammalian species, may mediate this inhibitory effect of stress. The objective of the present study was to compare the effect of chronic stress and glucocorticoids receptor an...

The defect-free structure of Mo-based materials is a “double-edged sword”, which endows the material with excellent stability, but limits its chemical versatility and application in electrochemical hydrogen evolution reaction (HER). Carbon doping engineering an attractive strategy to effectively improve performance catalyst maintain their stability. Herein, we report cross-linked porous carbon-...