Synthesis of Copper Oxide Nanopowder by Microwave Method

Abstract

Copper oxide nanopowder was successfully synthesized by microwave method. Copper acetate and sodium hydroxide were used as the starting precursors. The microwave power was set to 800 Watt for 2-6 min and fine black nanopowder was obtained. The nanopowder was milled and dried at 80 °C for 12 h. The structure was identified by X-ray diffractometer (XRD). A monoclinic single phase of CuO nanopowder structure was obtained without calcination steps. The morphology was investigated by scanning electron microscope (FESEM). The particle was irregular in shape and agglomerated. The chemical composition was determined by energy dispersive X-ray spectrometer (EDXS). The chemical compositions showed the characteristic X-ray energy of copper (Kα=8.048 keV) and oxygen (Kα=0.525 keV), respectively. The functional group was investigated by fourier transform infrared spectrometer (FTIR). The functional groups of the vibration Cu-O bending showed the wavenumber at 491-615 cm-1.

Hydrogen peroxide modified and bismuth vanadate decorated titanium dioxide nanocomposite (BiVO4@HMT) for enhanced visible light photocatalytic growth inhibition of harmful cyanobacteria in water

“…BiVO 4 nanoparticles were synthesized by the sol–gel method according to the method described by Pookmanee. 33 Stoichiometric amounts (0.003 M) of Bi(NO 3 ) 3 ·5H 2 O and NH 4 VO 3 were dissolved in 5 mL of 4 M HNO 3 and 4 M NH 4 OH, respectively. After stirring individually for 30 min, both solutions were mixed together to generate a yellow solution.…”

Structural, optical and photocatalytic properties of mesoporous CuO nanoparticles with tunable size and different morphologies

“…1 Understanding of the physical and chemical properties of CuO generates much interest due to its wide range of applications in gas sensors, 2 biosensors, 3 photo-detectors, 4 magnetic storage media, 5 supercapacitors, 6 photocatalysis, 7 removal of inorganic pollutants 8,9 and antimicrobial applications. 10 Various preparation techniques have been developed for the synthesis of CuO nanostructures such as sol-gel, 11 hydrothermal, 12 microwave-assisted, 13 thermal decomposition of coordination polymers, 14 and colloidal chemical precipitation. 15 The sol-gel method is one of the utmost widespread chemical solution approaches, it shows the advantages of scalability, energy efficiency, and costeffectiveness for the synthesis of nanostructured metal oxides with controlled morphology and growth conditions.…”

“…Various preparation techniques have been developed for the synthesis of CuO nanostructures such as sol–gel, 11 hydrothermal, 12 microwave-assisted, 13 thermal decomposition of coordination polymers, 14 and colloidal chemical precipitation. 15 The sol–gel method is one of the utmost widespread chemical solution approaches, it shows the advantages of scalability, energy efficiency, and cost-effectiveness for the synthesis of nanostructured metal oxides with controlled morphology and growth conditions.…”

Structural transformation of Bi1−x/3V1−xMoxO4 solid solutions for light-driven water oxidation

“…5 The type of crystal structure and morphology essentially depends on synthetic procedures, raw materials used and reaction conditions. [6][7][8][9] Applying high temperatures is more likely to lead to a tetragonal scheelite structure 8 or less commonly to the monoclinic crystallites with an irregular shape and large crystal size as well as defects as a result of rapid quenching. 5 The latter structure is unfavourable for the photocatalytic performance.…”