title: Nanostructured ZnO-TiO2thin film oxide as anode material in electrooxidation of organic pollutants. Application to the removal of dye Amido black 10B from water.
abstract: Electrochemical oxidative degradation of diazo dye Amido black 10B (AB10B) as model pollutant in water has been studied using nanostructured ZnO-TiO2thin films deposited on graphite felt (GrF) substrate as anode. The influence of various operating parameters, namely the current intensity, the nature and concentration of catalyst, the nature of electrode materials (anode/cathode), and the adsorption of dye and ambient light were investigated. It was found that the oxidative degradation of AB10B followed pseudo first-order kinetics. The optimal operating conditions for the degradation of 0.12 mM (74 mg L-1) dye concentration and mineralization of its aqueous solution were determined as GrF-ZnO-TiO2thin film anode, 100 mA current intensity, and 0.1 mM Fe2+(catalyst) concentration. Under these operating conditions, discoloration of AB10B solution was reached at 60 min while 6 h treatment needed for a mineralization degree of 91 %. Therefore, this study confirmed that the electrochemical process is effective for the degradation of AB10B in water using nanostructured ZnO-TiO2thin film anodes.
authors: Electrochemical, Catalysis and Environment Lab, Science Faculty, Ibn-Zohr University, BO 8106, Dakhla City, Agadir, Morocco.|Institute for Materials & Surface Technology, University of Applied Sciences, Kiel, Germany.
authors: Sana
authors: S
authors: El-Kacemi
authors: Electrochemical, Catalysis and Environment Lab, Science Faculty, Ibn-Zohr University, BO 8106, Dakhla City, Agadir, Morocco.|Laboratoire Géomatériaux et Environnement (LGE), EA 4506, UPEM, Université Paris-Est, 77454, Marne-la-Vallée, France.
authors: Hicham
authors: H
authors: Zazou
authors: Laboratoire Géomatériaux et Environnement (LGE), EA 4506, UPEM, Université Paris-Est, 77454, Marne-la-Vallée, France.
authors: Nihal
authors: N
authors: Oturan
authors: Institute for Materials & Surface Technology, University of Applied Sciences, Kiel, Germany.
authors: Matthias
authors: M
authors: Dietze
authors: Electrochemical, Catalysis and Environment Lab, Science Faculty, Ibn-Zohr University, BO 8106, Dakhla City, Agadir, Morocco.
authors: Mohamed
authors: M
authors: Hamdani
authors: Institute for Materials & Surface Technology, University of Applied Sciences, Kiel, Germany.
authors: Mohammed
authors: M
authors: Es-Souni
authors: Laboratoire Géomatériaux et Environnement (LGE), EA 4506, UPEM, Université Paris-Est, 77454, Marne-la-Vallée, France. mehmet.oturan@univ-paris-est.fr.
authors: Mehmet A
authors: MA
authors: Oturan
mesh_terms: D000327:Adsorption; D000580:Amido Black / Q000302:isolation & purification*; D001391:Azo Compounds / Q000737:chemistry; D002384:Catalysis; D004566:Electrodes; D006108:Graphite / Q000737:chemistry; D007700:Kinetics; D009282:Naphthalenesulfonates / Q000737:chemistry; D010084:Oxidation-Reduction; D014025:Titanium / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D009282:Naphthalenesulfonates; C558655:Naphthol Blue Black; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D006108:Graphite; D014025:Titanium; D015034:Zinc Oxide; D000580:Amido Black
keywords: Amido black 10B; Electro-Fenton; Electrooxidation; Mineralization; Nanostructured ZnO-TiO2; Rate constant