INVESTIGADORES
LITTER marta Irene
artículos
Título:
Photocatalytic removal of Pb(II) over TiO2 and Pt-TiO2 powders.
Autor/es:
L. MURRUNI; G. LEYVA; M. I. LITTER
Revista:
CATALYSIS TODAY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2007 vol. 129 p. 127 - 135
ISSN:
0920-5861
Resumen:
Results on Pb(II) photocatalytic removal using TiO2 and Pt-loaded TiO2 under different conditions shed light on the mechanisms of previousreports on this complex system. Efficiencies are dependent on the reaction conditions and on the type of photocatalyst. Low efficiency is obtainedwhen only pure TiO2 is used. The reaction is enhanced: (1) using platinized TiO2, (2) bubbling ozone, and (3) by addition of 2-propanol. Differentmechanisms, via reductive and oxidative pathways, can be proposed for each experimental condition. The nature of the lead deposits depends onthe reaction conditions, and supports the proposed mechanisms.
