Preparation and characterization of zinc and copper co-doped WO3 nanoparticles: Application in photocatalysis and photobiology.
In this study, pure, Zn, Cu, Zn,Cu co-doped WO3 nanoparticles samples were prepared by precipitation and co-precipitation methods. These nanoparticles were characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), energy dispersive X-ray spectrometer (EDX), Dynamic light scattering (DLS), UV-visible and photoluminescence (PL) spectroscopy. The synthesized pure, Zn, Cu, Zn,Cu co-doped WO3 nanoparticles have smart optical properties and average sizes with 3.2, 3.12, 3.08 and 2.97eV of band-gap, 18.1, 23.2, 25.7 and 30.2nm, respectively. Photocatalytic activity of four nanoparticles was studying towards degradation of gentamicin antibiotic under ultraviolet and visible light irradiation. The result showed that Zn,Cu co-doped WO3 possessed high photocatalytic activity. The photocatalytic activity of WO3 nanoparticles could be remarkably increased by doping the Zn and Cu impurity. This can be attributed to the fact that the red shift of absorption edge and the trapping effect of the mono and co-doped WO3 nanoparticles. The research result presents a general and effective way to prepare different photocatalysts with enhanced visible and UV light-driven photocatalytic performance. Antibacterial activity of four different WO3 nanoparticles against Escherichia coli bacterium has been assessed by the agar disc method under light irradiation and dark medium. It is concluded from the present findings that WO3 nanoparticles can be used as an efficient antibacterial agent.
Department of Chemistry, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran.
Sanaz
S
Mohammadi
Department of Chemistry, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran.
Maryam
M
Sohrabi
Department of Chemistry, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran; Jaber Research laboratory, NSTRI, P.O. Box: 14395-836, Tehran, Iran. Electronic address: anozad@aeoi.org.ir.
Ahmad Nozad
AN
Golikand
Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran. Electronic address: ali.fakhri88@yahoo.com.
Ali
A
Fakhri
D000900:Anti-Bacterial Agents / Q000737:chemistry; D002384:Catalysis; D003300:Copper / Q000737:chemistry; D000067493:Dynamic Light Scattering; D004926:Escherichia coli / Q000187:drug effects / Q000528:radiation effects; D005839:Gentamicins / Q000737:chemistry; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000633:toxicity; D008855:Microscopy, Electron, Scanning; D010087:Oxides / Q000737:chemistry*; D010782:Photolysis / Q000528:radiation effects; D013052:Spectrometry, X-Ray Emission; D014414:Tungsten / Q000737:chemistry*; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction; D015032:Zinc / Q000737:chemistry
D000900:Anti-Bacterial Agents; D005839:Gentamicins; D010087:Oxides; D003300:Copper; C511604:tungsten oxide; D015032:Zinc; D014414:Tungsten
Antibacterial activity; Antibiotic; Metal oxides; Nanoparticles; Photocatalytic property