title: Adsorption and photocatalytic degradation of malachite green by vanadium doped zinc oxide nanoparticles.
abstract: Herein the degradation of malachite green (MG) dye from aqueous medium by vanadium doped zinc oxide (ZnO:V3%) nanopowder was investigated. The specific surface area and pore volume of the nanopowder was characterized by nitrogen adsorption method. Batch experimental procedures were conducted to investigate the adsorption and photocatalytic degradation of MG dye. Adsorption kinetics investigations were performed by varying the amount of the catalyst and the initial dye concentrations. Adsorption and photocatalytic degradation data were modeled using the Lagergren pseudo-first-order and second-order kinetic equation. The results showed that the ZnO:V3% nanopowder was particularly effective for the removal of MG and data were found to comply with Lagergreen pseudo-first-order kinetic model.
authors.affiliation: College of Sciences, Department of Chemistry, Al Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi Arabia.
authors.forename: L
authors.initials: L
authors.lastname: Khezami
authors.affiliation: College of Sciences, Department of Chemistry, Al Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi Arabia; College of Applied and Industrial Sciences, University of Bahri, Khartoum, Sudan E-mail: kamaltha60@gmail.com.
authors.forename: Kamal K
authors.initials: KK
authors.lastname: Taha
authors.affiliation: College of Sciences, Department of Physics, Al Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi Arabia and Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Faculty of Sciences, University of Gabès, Gabès, Tunisia.
authors.forename: Imed
authors.initials: I
authors.lastname: Ghiloufi
authors.affiliation: College of Sciences, Department of Physics, Al Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11432, Saudi Arabia and Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE), Faculty of Sciences, University of Gabès, Gabès, Tunisia.
authors.forename: Lassaad
authors.initials: L
authors.lastname: El Mir
mesh_terms: D000327:Adsorption / Q000528:radiation effects; D002384:Catalysis / Q000528:radiation effects; D052918:Environmental Restoration and Remediation / Q000295:instrumentation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008027:Light; D053758:Nanoparticles / Q000737:chemistry*; D012394:Rosaniline Dyes / Q000737:chemistry*; D014639:Vanadium / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D012394:Rosaniline Dyes; D014874:Water Pollutants, Chemical; D014639:Vanadium; C005095:malachite green; D015034:Zinc Oxide