INQUIMAE 12526
INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Dark reduction of As(V) by accumulated electrons stored in TiO2 nanoparticles
Autor/es:
IVANA K. LEVY; NATALIA QUICI; GRACIELA CUSTO; MARTA I. LITTER; MARTA A. BRUSA; MATÍAS E. AGUIRRE; MARÍA A. GRELA; ENRIQUE SAN ROMÁN
Lugar:
Buenos Aires
Reunión:
Congreso; 5th. International Congress on Arsenic in the Environment; 2014
Resumen:
Direct evidence is presented that the otherwise thermodynamically forbidden reduction of As(V) by conduction band electrons of the semiconductor can be driven in the dark by accumulated electrons stored in alcoholic TiO2 nanoparticles. Accumulation of electrons and participation in As(V) reduction was directly followed by UV-vis spectrophotometry and by Electron Paramagnetic Resonance, detected as Ti(III) species.
