TiO 2-photocatalytic reduction of pentavalent and trivalent arsenic: Production of elemental arsenic and arsine

Heterogeneous photocatalytic reduction of As(V) and As(III) at different concentrations over TiO 2 under UV light in deoxygenated aqueous suspensions is described. For the first time, As(0) was unambiguously identified together with arsine (AsH3) as reaction products. As(V) reduction requires the pr...

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Detalles Bibliográficos
Autores principales: Levy, I.K., Mizrahi, M., Ruano, G., Zampieri, G., Requejo, F.G., Litter, M.I.
Formato: JOUR
Materias:
Aqueous suspensions
Conduction band electrons
Direct Reduction
Electron donors
Hydroxyl radicals
Methanol Oxidation
Photocatalytic process
Photocatalytic reduction
TiO
Arsenic
Methanol
Suspensions (fluids)
Titanium dioxide
Water treatment
arsenic
arsine
hydroxyl radical
methanol
titanium dioxide
aqueous solution
catalysis
concentration (composition)
electron
oxidation
photodegradation
pollutant removal
reduction
titanium
water treatment
article
concentration (parameters)
photocatalysis
solid
ultraviolet radiation
X ray absorption spectroscopy
Arsenicals
Catalysis
Oxidation-Reduction
Photochemical Processes
Titanium
Ultraviolet Rays
Water Pollutants, Chemical
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0013936X_v46_n4_p2299_Levy
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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