Synthesis of Cu(OH)₂ Nanowires at Aqueous−Organic Interfaces

Abstract

Cu(OH)2 nanowires have been successfully synthesized at the organic−aqueous interface by the interaction of the copper−bis(2-ethylhexyl) phosphate complex in the organic layer with NaOH in aqueous layer. The nanowires have an average length of 4 μm and are several nanometers in width. CuO nanowires and short wiskers are conveniently prepared through dehydration of Cu(OH)2 at high concentrations of NaOH under ambient conditions. Transmission electron microscopy and X-ray diffraction techniques have been used to characterize the microstructures and morphologies of the nanowire materials.

Investigation of structural and electrical properties of novel CuO–PVA nanocomposite films

“…CuO has also been used in antimicrobial applications and in preparation of nanofluids [24,25]. Various CuO nanostructures through chemical method as well as Cu(OH) 2 nanowires have been synthesised for various practical applications [26,27]. In contrast to an n-type semiconducting metal oxide, CuO is a p-type semiconductor because of its narrow band gap of 1.2-1.9 eV, thereby facilitating easy jump of electrons from one energy level to another [28,29].…”

Emergent methods to synthesize and characterize semiconductor CuO nanoparticles with various morphologies – an overview

“…were prepared starting from single crystalline Cu 2 (OH) 2 CO 3 nanoribbons as precursors for sacrificial-template via heat treatments [36]. Song et al [37] reported a different approach to the preparation for CuO nanowires starting from Cu(DEHP) 2 complex is as follows. First, Cu(DEHP) 2 complex were generated at pH 6 by mixing 2:1 molar ratio of bis(ethylhexyl) hydrogen phosphate (HDEHP) and CuCl 2 in heptane and water.…”

Effect of Ultrasonic‐assisted Preparation Methods on Structure, Morphology and Optical Properties of Nanosized Cupric Oxide

“…1 Among materials based on 3d transition metals, cupric oxide (CuO) is a narrow band-gap p-type semiconductor. 2,3 With the decrease in the crystal size, nanosized cupric oxide may exhibit unique properties, which can be significantly different from those of the bulk material. Nanoparticles of this compound are used in many important fields of science and technology such as gas sensors, heterogeneous catalysts and lithium batteries.…”

“…[4][5][6][7][8][9][10] Furthermore the large fraction of surface area, excellent stability, low production cost and good electronic properties make nanosized CuO as a suitable compound for new studies to determine its applicability as a material of solar cells, in particular due to its photoconductivity and photochemical properties. [2][3][4][5][6][7][8][9][10][11][12][13] In addition, metal oxides such as CuO may be particularly valuable antimicrobial agents as they can be prepared with extremely high surface areas. 14 Therefore, in the past two decades great efforts have been made to prepare nanosized CuO.…”

“…Developing a simple method for the preparation of one-dimensional CuO at lower temperature is of significance. Chen et al 18 have reported the synthesis of CuO shuttle-like nanocrystals via the hydrothermal decomposition route using the pre-obtained Cu(OH) 2 as the copper source in the absence of any surfactants. Synthesis of CuO nanorods and nanoribbons at the moderate temperature (77-82 ºC) in water-ethanol solutions were also reported by Chang et al 19 Balamurugan et al 20 reported the synthesis of nanosized CuO by the electrodeposition of Cu(II) ions followed by the gas-solid reaction.…”