title: Visible light photo-degradation of methylene blue over Fe or Cu promoted ZnO nanoparticles.
abstract: CuxZn(1-x)O, FexZn(1-x)O (x=0.01) and ZnO nanoparticles were and were characterized by X-ray diffraction, ultraviolet and visible spectroscopy, FTIR spectroscopy and SEM. The photodegradation of an aqueous solution of methylene blue (as an organic pollutant) by nanoparticles with H2O2 (30%) under visible light and the progress of the reaction were monitored by UV-Vis spectroscopy absorption. The photocatalytic oxidation efficiency of all nanoparticles was 100% at the appropriate time. The degradation time was 90 min for FeZnO, 120 min for CuZnO and 210 min for ZnO. This indicates that the photocatalytic activity of the doped nanoparticles was better than that of ZnO alone. ZnO doped with a small amount of Fe or Cu decreased the size of the nanoparticles and the band gap and increased photocatalytic efficiency.
authors: Department of Chemistry, Payame Noor University (PNU), PO BOX 19395-4697, Tehran, Iran. Electronic address: hamidreza.inorg@yahoo.com.
authors: Hamid Reza
authors: HR
authors: Mardani
authors: Department of Chemistry, Payame Noor University (PNU), PO BOX 19395-4697, Tehran, Iran.
authors: Mehdi
authors: M
authors: Forouzani
authors: Department of Chemistry, Payame Noor University (PNU), PO BOX 19395-4697, Tehran, Iran.
authors: Mitra
authors: M
authors: Ziari
authors: Department of Basic and Agricultural Sciences and Natural Resources University, Sari, Iran.
authors: Pourya
authors: P
authors: Biparva
mesh_terms: D002384:Catalysis / Q000528:radiation effects; D002412:Cations; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D008027:Light; D008751:Methylene Blue / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010782:Photolysis / Q000528:radiation effects*; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013997:Time Factors; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D002412:Cations; D012996:Solutions; D003300:Copper; D007501:Iron; D015034:Zinc Oxide; D008751:Methylene Blue
keywords: Co-precipitation; Doped nanomaterial; Methylene blue; Photodegradation; Visible; ZnO