Effects of swift heavy ion irradiation on structural, optical and photocatalytic properties of ZnO–CuO nanocomposites prepared by carbothermal evaporation method
نویسندگان
چکیده
ZnO-CuO nanocomposite thin films were prepared by carbothermal evaporation of ZnO and Cu, combined with annealing. The effects of 90 MeV Ni(7+) ion irradiation on the structural and optical properties of ZnO-CuO nanocomposites were studied by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV-visible absorption spectroscopy and Raman spectroscopy. XRD studies showed the presence of ZnO and CuO nanostructures in the nanocomposites. FESEM images revealed the presence of nanosheets and nanorods in the nanocomposites. The photocatalytic activity of ZnO-CuO nanocomposites was evaluated on the basis of degradation of methylene blue (MB) and methyl orange (MO) dyes under sun light irradiation and it was observed that swift heavy ion irradiation results in significant enhancement in the photocatalytic efficiency of ZnO-CuO nanocomposites towards degradation of MB and MO dyes. The possible mechanism for the enhanced photocatalytic activity of ZnO-CuO nanocomposites is proposed. We attribute the observed enhanced photocatalytic activity of ZnO-CuO nanocomposites to the combined effects of improved sun light utilization and suppression of the recombination of photogenerated charge carriers in ZnO-CuO nanocomposites.
منابع مشابه
Study of structural, optical and electrical properties of ZnO/CuO nanocomposites
In this work, the first ZnO/CuO nanocomposites were synthesized by chemical vapour deposition (CVD), thermal evaporation (PVD) and sputtering on silicon substrates (Si). Then, the structural, optical and electrical properties of the samples were investigated. Examination of the X-ray diffraction patterns confirmed the mixed-phase formation of hexagonal zinc oxide (ZnO) and monoclinic copper oxi...
متن کاملStructural and Morphology Study of ZnO/CuO Powders Prepared by Combination of Sol-gel Auto Combustion and Ultrasonic Irradiation Methods with Different Fuels
Nanocrystalline complex oxides have been synthesized by combination of sol–gel auto combustion and ultrasonic irradiation techniques using copper nitrate, zinc nitrate as metallic nitrates and glycine, urea and thiourea as fuels. Sol-gel combustion (combination of the chemical sol–gel process and the combustion process) as a proper synthesized technique is used to synthesize ZnO/CuO nanocomposi...
متن کاملStructural and Morphology Study of ZnO/CuO Powders Prepared by Combination of Sol-gel Auto Combustion and Ultrasonic Irradiation Methods with Different Fuels
Nanocrystalline complex oxides have been synthesized by combination of sol–gel auto combustion and ultrasonic irradiation techniques using copper nitrate, zinc nitrate as metallic nitrates and glycine, urea and thiourea as fuels. Sol-gel combustion (combination of the chemical sol–gel process and the combustion process) as a proper synthesized technique is used to synthesize ZnO/CuO nanocomposi...
متن کاملZnO/bentonite Nanocomposites Prepared with Solid-state Ion Exchange as Photocatalysts
Photocatalyst nanocomposites of ZnO/bentonite clay are synthesized by Solid-state ion exchange method. Ion exchange intercalation process of clays is used to incorporate the catalyst into the basal space of the layered structure of clays. The purpose of this study is to find a new method, which is focused on simplifying and saving time to prepare ZnO-bentonite composite with photocatalyst prope...
متن کاملEffect of Morphology on the Photocatalytic Behavior of ZnO Nanostructures: Low Temperature Sonochemical Synthesis of Ni Doped ZnO Nanoparticles
In the present study, ZnO nanostructure has been synthesized by different methods, namely coprecipitation, hydrothermal and sonochemical methods. After comparison of the morphology and photocatalytic activity of ZnO samples prepared via different methods, the best method (sonochemical method) was used for synthesis of Ni-ZnO nanoparticles with different concentrations of nickel. Furthermore, st...
متن کامل