In heterogeneous catalysis, a nanoparticle (NP) system has immediate chemical surroundings with which its interaction needs to be considered, as nanoparticles are typically loaded onto certain supports. Beyond what is known about these interactions, dynamic atomic interactions between the nanoparticle and support could result from the increased energetics at the nanoscale. Here, we show that th...

Commercially available copper and (II) oxide nanoparticles (CuNPs CuO NPs) were characterized using TEM electronography methods to elucidate their true average size composition. The catalytic amine arylation unsupported differing in oxidation state was investigated. reaction of the model iodobenzene with n-octylamine shown be successfully catalyzed by CuNPs 25 10/80 nm presence ligands such as ...

Engineered nanoparticles are becoming increasingly incorporated into technology and consumer products. In 2014, over 300 tons of copper oxide nanoparticles were manufactured in the United States. The increased production of nanoparticles raises concerns regarding the potential introduction into the environment or human exposure. Copper oxide nanoparticles commonly release copper ions into solut...

Wound bacterial infections and tumor recurrence are the main reasons for poor prognosis after primary resection. Here, we fabricated a novel therapeutic nanocomposite using chitosan (CS) hydrogel combined with black phosphate nanosheets (BPNSs) in situ grown copper nanoparticles (CuNPs). The obtained ([email protected]@CuNPs), possessing remarkable temperature-sensitive spongy-like state, offer...

A facile step-by-step approach for synthesizing copper nanoparticles (CuNPs) loaded on the wrinkled surface of reduced-graphene-oxide (Cu/rGO) was conducted using a reductant at room temperature. Multiple characterization methods were applied to specify morphology and composition nanocomposites. The scanning electron microscope transmission Cu/rGO show that spherical CuNps dispersed uniformly r...

Two different kinds of copper nanoparticles (CuNPs) (brown colour and greenish colour) were synthesised by using simple solution route applied exhaust method to achieve multidimensional functionalization on one the most popular cellulose materials e.g., cotton fabric. The CuNPs imparted colours said textile due conditions synthesis localized surface plasmon resonance. Physico-chemical character...

The current study has determined the toxicity effects of copper nanoparticles on the some vital organs such as gill, liver and kidney of Caspian Roach; Rutillus rutillus caspicus. For this purpose, 120 fishes were used as experimental samples and exposed to 0.1, 0.2 and 0.5 mg/L of Cu nanoparticles for 21 days, and 30 fishes assumed as the experiment control. The mean water temperature...

This communication examines the effect of the surface morphology of polycrystalline copper on electroreduction of CO(2). We find that a copper nanoparticle covered electrode shows better selectivity towards hydrocarbons compared with the two other studied surfaces, an electropolished copper electrode and an argon sputtered copper electrode. Density functional theory calculations provide insight...

Copper nanoparticles (CuNPs) embedded in polyvinylpyrrolidone (PVP) and polyethylene oxide (PEO) fiber-matrices were prepared through centrifugal spinning of PVP/ethanol PEO/aqueous solutions, respectively. The prime focus the current study is to investigate antibacterial activity composite fibers against Escherichia coli (E. coli) Bacillus cereus (B. cereus) bacteria. During fiber formation, p...