Fabrication of CuO nanoparticle interlinked microsphere cages by solution method

Abstract

Here we report a very simple method to convert conventional CuO powders to nanoparticle interlinked microsphere cages by solution method. CuO is dissolved into aqueous ammonia, and the solution is diluted by alcohol and dip coating onto a glass substrate. Drying at 80°C, the nanostructures with bunchy nanoparticles of Cu(OH) 2 can be formed. After the substrate immerges into the solution and we vaporize the solution, hollow microspheres can be formed onto the substrate. There are three phases in the as-prepared samples, monoclinic tenorite CuO, orthorhombic Cu(OH) 2 , and monoclinic carbonatodiamminecopper(II) (Cu(NH 3 ) 2 CO 3 ). After annealing at 150°C, the products convert to CuO completely. At annealing temperature above 350°C, the hollow microspheres became nanoparticle interlinked cages.

Study of structural and optical properties of cupric oxide nanoparticles

“…Nanocrystalline semiconductor particles have drawn considerable interest in recent years due to their interactive properties such as large surface-to-volume ratio and distinctive electronic and optical properties as compared to bulk materials (Huang et al 2010;Son et al 2009;Xu et al 2007;Lim et al 2012;Qi et al 2007;Kidowaki et al 2012). Cupric oxide (CuO) is a transition metal oxide.…”

“…It is also an attractive candidate for light-harvesting applications due to its band gap energy of 1.4 eV (Son et al 2009;Xu et al 2007;Lim et al 2012). CuO compounds are technologically well-known materials that have their applications in areas (Qi et al 2007) such as solar energy materials, electronic materials, gas sensor, magnetic media, optical devices, batteries and catalyst (Kidowaki et al 2012;Lang et al 2006;Teng et al 2008;Stewart et al 2004;Wang et al 2007;Morales et al 2005), and constructing junction devices such as p-n diode (Muhibbullah et al 2003), as well as for photoconductive, photothermal, and photoelectrochemical applications (Chiang et al 2012).…”

Self‐Assembly Growth and Photocatalytic Performance of Nanostructured Copper Compounds

“…A unique appeal of this concept is that nanostructured copper oxide can be grown directly on the substrate for use in areas such as field-effect transistors and chemical/biochemical sensing. It is noteworthy that more efforts have been made to improve the photocatalytic efficiency of some other semiconductors, [17,18] but few references have focused on the photocatalytic activity of Cu(OH) 2 /CuO composite and pure copper oxide. [10,19,20] The photocatalytic activity of the Cu(OH) 2 / CuO and pure CuO nanostructures was evaluated by examining the degradation of MB in combination with their absorption spectra.…”

Phase‐manipulable synthesis of Cu‐based nanomaterials using ionic liquid 1‐butyl‐3‐methyl‐imidazole tetrafluoroborate

“…Therefore, phasemanipulable syntheses of CuO nanostructures, CuO/Cu 2 O nanocomposites and pure Cu nanoparticles using simple methods are meaningful. A few methods for preparation of Cu-based nanoparticles have been recently reported, such as the sonochemical method, vapour-solid reaction, thermal decomposition of precursors, solution route and hydrothermal synthesis [8][9][10][11][12]. The crystal phases, morphologies and sizes of the Cu-based nanomaterials were found to be significantly influenced by the processing parameters being deployed.…”