Síntese, caracterização e atividade fotocatalítica de catalisadores nanoestruturados de TiO2 dopados com metais

Química Nova

William Leonardo Da Silva²  Marla Azário Lansarin²  Celso Camilo Moro¹ 

[1] ,Universidade Federal do Rio Grande do Sul Departamento de Engenharia Química Porto Alegre RS ,Brasil

关键词: photocatalysis;    TiO2 nanotubes;    metal doped TiO2;   

DOI  :  10.1590/S0100-40422013000300006

来源: SciELO

【 摘 要 】

Titanium dioxide nanostructured catalysts (nanotubes) doped with different metals (silver, gold, copper, palladium and zinc) were synthesized by the hydrothermal method in order to promote an increase in their photocatalytic activity under visible light. The catalysts were characterized by X-ray diffraction, diffuse reflectance spectroscopy, transmission electron microscopy and specific area and pore volume determination. The materials' photocatalytic activity was evaluated by rhodamine B decomposition in a glass batch reactor. Under UV radiation, only nanotubes doped with palladium were more active than the TiO2 P25, but the samples doped with silver, palladium and gold exhibited better results than the undoped samples under visible light.

【 授权许可】

CC BY-NC   
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