Search results for "N-doped titanium dioxide"

showing 2 items of 2 documents

Photocatalytic ozonation under visible light for the remediation of water effluents and its integration with an electro-membrane bioreactor

2018

Abstract Photocatalysis and photocatalytic ozonation under visible light have been applied for the purification of a complex aqueous matrix such as the grey water of Masdar City (UAE), by using N-doped brookite-rutile catalysts. Preliminary runs on 4-nitrophenol (4-NP) solutions allowed to test the reaction system in the presence of a model pollutant and to afford the relevant kinetic parameters of the process. Subsequently, the remediation of grey water effluent has been evaluated in terms of the reduction of total organic carbon (TOC) and bacterial counts. The concentration of the most abundant inorganic ionic species in the effluent has been also monitored during reaction. Photocatalytic…

Electrically enhanced membrane bioreactor; Grey water; Nitrogen-doped titanium dioxide; Photocatalytic ozonation; Visible light; Chemistry (all); Environmental ChemistryEnvironmental EngineeringLightEnvironmental remediationHealth Toxicology and Mutagenesis02 engineering and technology010501 environmental sciencesWastewaterMembrane bioreactor01 natural sciencesCatalysisNitrogen-doped titanium dioxideBioreactorsOzoneBioreactorEnvironmental ChemistryTurbidityEffluentEnvironmental Restoration and Remediation0105 earth and related environmental sciencesVisible lightTotal organic carbonPhotocatalytic ozonationAqueous solutionChemistryChemistry (all)Public Health Environmental and Occupational HealthMembranes ArtificialGeneral MedicineGeneral ChemistryElectrochemical Techniques021001 nanoscience & nanotechnologyPulp and paper industryPollutionGrey waterDisinfectionPhotocatalysisElectrically enhanced membrane bioreactor0210 nano-technologyWater Pollutants Chemical
researchProduct

N-TiO2 Photocatalysts highly active under visible irradiation for NOX abatement and 2-propanol oxidation

2013

N-doped TiO2 powders were prepared by two different sol-gel methods. Samples were characterised by X-ray diffraction (XRD), BET specific surface area measurements (SSA), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) and Electron Paramagnetic Resonance (EPR). XPS measurements revealed a signal at 400 eV assignable to nitrogen in the form of Ti-N-O. EPR signals are attributed to molecular NO trapped with cavities/defects possibly interacting with oxygen vacancies. The photocatalytic activity under UV and visible light was determined following the abatement of NOx and the photodegradation of 2-propanol in gas-solid systems. N…

Materials scienceN-doped titanium dioxide; Oxygen vacancies; Photocatalysis; Visible light activity;Diffuse reflectance infrared fourier transformInorganic chemistryGeneral ChemistryPhotochemistryCatalysisPhotocatalysis N-doped titanium dioxide Visible light activity Oxygen vacancieslaw.inventionVisible light activityOxygen vacanciesX-ray photoelectron spectroscopylawSpecific surface areaPhotocatalysisSettore CHIM/07 - Fondamenti Chimici Delle TecnologiePhotocatalysisElectron paramagnetic resonancePhotodegradationN-doped titanium dioxideNOxVisible spectrumCatalysis Today
researchProduct