Preparation of activated carbon-metal (hydr)oxide photocatalysts under different heating conditionschemical aspects
- A. Barroso-Bogeat
- M. Alexandre-Franco
- C. Fernández-González
- V. Gómez-Serrano
ISSN: 2172-6094
Año de publicación: 2016
Número: 42
Páginas: 22-26
Tipo: Artículo
Otras publicaciones en: Boletín del Grupo Español del Carbón
Resumen
This study deals with the preparation of activated carbon (AC)-metal (hydr)oxide (MO) photocatalysts from commercial AC and Al3+, Fe3+, Zn2+, SnCl2, TiO2 and WO4 2- in water, with special emphasis on the chemical changes produced along the process. Overall, three series of samples were obtained by first soaking at 80 ºC and oven-drying at 120 ºC (S1) and by subsequent heating at 200 ºC (S2) or 850 ºC (S3) in N2 atmosphere. pH of the impregnation solution/ suspension was 2.91 with Al3+, 1.54 with Fe3+, 5.16 with Zn2+, 1.37 with SnCl2, 5.84 with TiO2 and 9.54 with WO4 2-. Data of the process yield at the three temperatures and of the ash content are reported. For S1, yield varies by SnCl2 >>Fe3+> WO4 2-> Zn2+ = TiO2> Al3+.