title: Photoelectrochemical removal of 17β-estradiol using a RuO2-graphene electrode.
abstract: A new electrode for the photoelectrochemical removal of 17β-estradiol from water using ruthenium oxide nanoparticles supported on reduced graphene oxide is proposed in this study. The morphology, microstructure and the electrochemical performance of the material were characterized using HRTEM, XRD and Raman spectroscopy. The characterization showed the formation of reduced graphene oxide from a micro-wave assisted hydrothermal method with a particle size of 5.0 nm + 2.4 nm. The electrochemical measurements point to a high performance of the electrode in the presence of a white light source. The hormone removal efficiency in water containing 50 μmol L(-1) of 17β-estradiol was evaluated using chronoamperometry at +1.0 V and the process was monitored using liquid chromatography. The reaction is pseudo first order with the removal of 92.2% of 17β-estradiol after 60 min of photoelectrocatalytic treatment.
authors.affiliation: Department of Chemistry, Federal University of São Carlos, P.O. Box 676, C.P, 13560-970 São Carlos, SP, Brazil. Electronic address: fcmoraes@hotmail.com.
authors.forename: Fernando C
authors.initials: FC
authors.lastname: Moraes
authors.affiliation: Department of Chemistry, Federal University of São Carlos, P.O. Box 676, C.P, 13560-970 São Carlos, SP, Brazil.
authors.forename: Luiz F
authors.initials: LF
authors.lastname: Gorup
authors.affiliation: Institute of Chemistry of São Carlos, University of São Paulo, P.O. Box 780, C.P, 78060-900 São Carlos, SP, Brazil.
authors.forename: Robson S
authors.initials: RS
authors.lastname: Rocha
authors.affiliation: Institute of Chemistry of São Carlos, University of São Paulo, P.O. Box 780, C.P, 78060-900 São Carlos, SP, Brazil.
authors.forename: Marcos R V
authors.initials: MR
authors.lastname: Lanza
authors.affiliation: Department of Chemistry, Federal University of São Carlos, P.O. Box 676, C.P, 13560-970 São Carlos, SP, Brazil.
authors.forename: Ernesto C
authors.initials: EC
authors.lastname: Pereira
mesh_terms: D002384:Catalysis; D055664:Electrochemical Techniques / Q000379:methods; D004566:Electrodes; D004958:Estradiol / Q000032:analysis* / Q000528:radiation effects; D006108:Graphite / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry; D010316:Particle Size; D055668:Photochemical Processes; D017975:Ruthenium Compounds / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013499:Surface Properties; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000528:radiation effects; D018508:Water Purification / Q000379:methods*
chemical_list: D017975:Ruthenium Compounds; D014874:Water Pollutants, Chemical; C029017:ruthenium dioxide; D004958:Estradiol; D006108:Graphite
keywords: 17β-estradiol; Photoelectrochemical removal; Reduced graphene oxide; Ruthenium oxide nanoparticles