Preparation And Properties Of CuO And ZnO Nanomaterials

Transition metal oxide nanomaterials is one of the most important researchdirections of chemistry, material and physics because their special optical, electrical,thermal, magnetic and other chemicophysics and quantum properties. Based onthe reported literature researchs, in this paper, ZnO and CuO are chosen asinvestigative subjects. A variety of transitional metal oxide nanomatericals aresuccessfully prepared by various strategies including micro-emulsion andhydrothermal, evaporation-induced self-assembly methods. The as-prepared productsare characterized by X-ray diffraction (XRD), field-emission scanning electronmicroscopy (FESEM), photoluminescence (PL), ultraviolet spectrophotometer (UV),high performance liquid chromatograph (HPLC) and electrochemical analysis. Thereaction conditions and mechanisms are investigated. In addition, the photocatalyticperformance and supercapacitor electrode material properties of nanomatericals arealso studied. The main points are summarized as follows:(1) Successfully prepared microemulsion of NaAOT/isooctane/aqueous solutioncontaining oxidant, flower-like ZnO nanostructured films are synthesized on Znfoils under70℃in a autoclave. The photocatalysis show that the photocatalystshow excellent performance and good cycling performance.(2) Based on a larger of literature, we prepared ZnO powder materials byhydrothermal method. In this experiment, uniform size ZnO nanomaterials wereprepared by transfer Zn2+concentration, reaction temperature. The photocatalysisshow that ZnO powder materials can catalysis RhB solution under sunlight.(3) In the three-dimensional structure of nickel foam substrate, we succeed preparedCuO nanosheets array by evaporation-induced self-assembly method throughadjusting the reaction conditions, the effect of reaction time on the morphologyhas been discussed, growth mechanism of CuO was introduced. Electrochemicaltests showed that CuO nanosheets array has a higher specific capacityperformance and poor cycle performance, speculated that the cause of poorperformance of CuO cycle performance.