Página Inicial CNEA Laboratorio TANDAR Página Inicial TANDAR Historia del acelerador TANDAR Web interno Web mail
Inicio » Actividades I+D > Publicaciones 2007 > Photocatalytic removal of Pb(II) over Ti...
acta de conferencia
"Photocatalytic removal of Pb(II) over TiO2 and Pt-TiO2 powders"
L. Murruni, A.G. Leyva and M.I. Litter
Proc. of the "4th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications" (SPEA 4), Canary Islands, Spain, November 8-10, 2006. Ed. S. Malato Rodríguez, W. Gernjak, J. Pérez Peña and J.M. Doña Rodríguez
Catal. Today 129(1-2) (2007) 127-135
Results on Pb(II) photocatalytic removal using TiO2 and Pt-loaded TiO2 under different conditions shed light on the mechanisms of previous reports on this complex system. Efficiencies are dependent on the reaction conditions and on the type of photocatalyst. Low efficiency is obtained when only pure TiO2 is used. The reaction is enhanced: (1) using platinized TiO2, (2) bubbling ozone, and (3) by addition of 2-propanol. Different mechanisms, via reductive and oxidative pathways, can be proposed for each experimental condition. The nature of the lead deposits depends on the reaction conditions, and supports the proposed mechanisms.
Av. Gral Paz y Constituyentes, San Martín, Pcia. de Buenos Aires, Argentina
Tel: (54-11) 6772-7007 - Fax: (54-11) 6772-7121