Metallic Copper Nanostructures Synthesized by a Facile Hydrothermal Method

Abstract

A facile hydrothermal route has been developed for the synthesis of nearly spherical copper nanoparticles, copper nanocubes and ribbon-like network nanostructures. The as-prepared copper nanostructures were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and UV-vis spectrum analysis. These copper products were fabricated in the presence of surfactant sodium dodecyl benzenesulfonate (SDBS) acting not only as stabilizer but also as size and shape controller via hydrothermal reduction process. HRTEM revealed that the surface of the copper nanostructures was packed with a thin layer of impurities such as oxide combined surfactant or amorphous surfactant. The influence of surfactant concentration and temperature on the resultant copper nanostructures was investigated in details. UV-vis spectra indicated that strong red shift existed for the copper ribbon-like network nanostructures due to the novel morphology as well as the presence of impurities on the surface.

Efficient electron-induced removal of oxalate ions and formation of copper nanoparticles from copper(II) oxalate precursor layers

“…The shake-up peaks have disappeared, indicating a reduction of the copper(II) precursor [ 36 , 38 ], while the remaining signals shift to higher binding energies. The new value of the 2p 3/2 peak agrees well with literature data for metallic copper [ 38 ] and copper nanoparticles [ 39 ]. In case of a partial reduction to Cu(I), the peak maximum would be expected at slightly lower energies ( Table 1 ).…”

The effect of copper nanoparticles supplementation on freshwater prawn Macrobrachium rosenbergii post larvae

“…In the present study, all the XRD peaks of synthesized CuNPs are matched with standard JCPDS card number 4-836 and it can be indexed as face centered cubic copper with lattice constant a = 3.614 Å, which is very close to previously reported data a = 3.615 Å [31]. Any other characteristic peaks of impurities of oxides could not be detected.…”

FusariumAntifungal Activities of Copper Nanoparticles Synthesized by a Chemical Reduction Method

“…There are many methods for synthesis of Cu Nps such as hydrothermal [28], photoreduction [29][30][31], thermal decomposition [11], and polyol and microwave-assisted polyol method [9,32,33]. However, the production of Cu Nps is much more challenging in comparison to noble metals because Cu Nps are placed in the open air leading to the aggregation immediately due to surface oxidation.…”