A one-step method for preparation of Cu@Cu2O nanoparticles on reduced graphene oxide and their catalytic activities in N-arylation of N-heterocycles

Deciphering Ligands’ Interaction with Cu and Cu2O Nanocrystal Surfaces by NMR Solution Tools

“…The kinetics of the oxidation process strongly depends on the ligand interacting with the surface of the NPs. [1] …”

“…Indeed, unlike other plasmonic nanomaterials such as gold or silver, copper SPR is commonly reported to red shift when the size of the NPs is smaller. [1] Three main parameters may influence the oxidation rate of the particles: their size, the diffusion rate of dioxygen inside the solvent, [25] and the interaction of the ligand with the surface of the nanoparticles.…”

“…[1][2][3][4] The use of copper metal-organic complexes and their decomposition in an organic medium is a rational way to prepare pure and well-defined nanocrystals stabilized by organic ligands. [5] In this regard, the nature of the ligands and their concentration can strongly affect the sensitivity of copper nanocrystals to oxidation under an ambient atmosphere.…”

Enhanced catalytic stability through non-conventional synthesis of Ni/SBA-15 for methane dry reforming at low temperatures

“…This preparation method is based on the chemical reduction of Ni-species with ascorbic acid. Use of ascorbic acid as reducing agent has been assayed and proven to be efficient for the preparation of other catalytic systems, such as core shell Cu-CuO 2 particles supported on graphene oxide [26], and for the synthesis of Cu nanoparticles [27]. Chemical reduction may result in the direct impregnation of Ni species leading to a higher dispersion of the active phase or to a different and most probably stronger interaction of the Ni-precursor with the support.…”

Facile synthesis and capacitive performance of Cu@Cu2O/graphene nanocomposites

“…For the as-prepared CCG composite ( Fig. 1a (3) [8,11,14] . No diffraction peaks for graphite and GO are observed, and a similar broad 5 peak to that of GN at around 24.0 o suggest no further agglomeration of few layers of GN in the composite in this process [15] .…”