Photocatalytic discoloration of reactive blue 5g dye in the presence of mixed oxides and with the addition of iron and silver

Brazilian Journal of Chemical Engineering

M. C. P Souza²  G. G Lenzi²  L. M. S Colpini¹  L. M. M Jorge²  O. A. A Santos² 

[1] ,Universidade Estadual de Maringá Departamento de Engenharia Química Maringá PR ,Brazil

关键词: CeO2;    TiO2;    Al2O3;    mixed oxides;    Discoloration;    Fe;    CeO2;    TiO2;    Al2O3;    Ag;    CeO2;    TiO2;    Al2O3;    Reactive blue 5G dye;    Characterization;   

DOI  :  10.1590/S0104-66322011000300005

来源: SciELO

【 摘 要 】

This work reports the use of cerium - titania - alumina - based systems modified with Ag and Fe by the wetness impregnation method for the discoloration of blue 5G dye. The techniques employed to characterize the photocatalysts were: temperature - programmed reduction (TPR), X - ray diffraction (XRD), specific surface area, average pore volume, and average pore diameter. The characterization results indicated that the photocatalysts had different crystalline structures and textural properties. Discoloration with the mixed oxide photocatalyst CeO2 - TiO2 - Al2O3 gave a result similar to that of TiO2. On the other hand, the addition of Ag and Fe to the mixed oxide increased the discoloration and reaction rates of reactive blue 5G dyes.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License