Cuprous Oxide Nanowires Prepared by an Additive-Free Polyol Process

Abstract

The polyol method was employed for the first time to synthesize cuprous oxide nanowires using only a precursor of Cu(II) acetate monohydrate and diethylene glycol (DEG). With careful control of the reaction temperature (190 °C), the precursor concentration (0.01−0.1 mol/L), and the reaction time (6 h), we prepared Cu2O nanowires with a diameter of approximately 20 nm and a length up to 5 μm. The nanowires were characterized by SEM, TEM, XRD, and IR spectroscopy.

Catalytic wet peroxide oxidation of azo dye (Direct Blue 15) using solvothermally synthesized copper hydroxide nitrate as catalyst

“…Apparently, there were two extra peaks (at 1647 cm −1 and 629 cm −1 ) in the FTIR spectrum of the as-synthesized Cu 2 (OH) 3 reported was between 620 and 634 cm −1 . The slight shift in peak position could be the effect of reduction in particle size [30][31][32][33][34].…”

“…Cu 2 O is an important p-type semiconductor which can be used as a photocatalyst to degrade organic pollutions under visible light irradiation, but the research of Cu 2 O as a Fenton-like catalyst without light irradiation has not been reported [29,32]. In copper-based Fenton-like heterogeneous system, such as CuO, Cu-pillared clays, and Cu-exchange zeolites as catalysts, Cu(II) is considered as the active species in general.…”

Optical and photoconductivity studies of Cu2O nanowires synthesized by solvothermal method

“…In the polyol process, derivatives of glycol serve as solvent, stabilizer and reducing agent; and also control the growth of nanostructures. Orel et al synthesized Cu 2 O coneshaped bundles made by nanowires in the polyol diethylene glycol (DEG) [30], but uniform Cu 2 O nanoparticles in the polyols ethylene glycol (EG) and tetraethylene glycol (TEG) [31]. Chainlike metal-glycolate complexes obtained by refluxing metal precursors in EG were transformed to the metal-oxide wire-like morphology after additional heating at high temperature.…”

Gas sensing properties of semiconducting copper oxide nanospheroids

“…In addition, the morphology of the CuO particles has also been the matter of concern in other advanced applications such as glucose sensing [15], catalysis [16], etc. Hence, scientists have focused on the development of methods and operational strategies for controlling particle morphologies of CuO which include polyol [17], hydrothermal [18], sol-gel [19], thermal oxidation [20], etc. These efforts led to the production of CuO powders, composed of nanoflowers [16], nanowires [20], and nanoribbons [21].…”