info:eu-repo/semantics/article
A simple synthesis way to obtain iron-doped TiO2 nanoparticles as photocatalytic surfaces
Fecha
2019-07Registro en:
Ochoa Rodríguez, Pablo Alejandro; Pecchi Sanchez, Gina Angela; Casuscelli, Sandra Graciela; Elías, Verónica Rita; Eimer, Griselda Alejandra; A simple synthesis way to obtain iron-doped TiO2 nanoparticles as photocatalytic surfaces; Elsevier Science; Chemical Physics Letters; 732; 7-2019; 1-6
0009-2614
CONICET Digital
CONICET
Autor
Ochoa Rodríguez, Pablo Alejandro
Pecchi Sanchez, Gina Angela
Casuscelli, Sandra Graciela
Elías, Verónica Rita
Eimer, Griselda Alejandra
Resumen
Mesoporous TiO2 nanoparticles synthesized by the sol-gel method were impregnated with different iron contents (0.0125, 0.025, 0.1, 1.0 wt%). The samples were characterized by XRD, UV–Vis DR, N2 adsorption/desorption, SEM and TEM. Their photocatalytic activity was evaluated in terms of the degradation and mineralization of acid orange 7 (AO7) in aqueous solution under UV–Vis and visible radiation. An iron loading of 0.1 wt% allowed enhance the photocatalytic performance. This behavior is attributed to the Fe3+ ions finely dispersed on the titania surface, whose presence decrease the band gap and could stabilize the separation between the photogenerated electron-hole pairs.