Nanotubos de TiO2 dopados com nitrogênio: comparação das atividades fotocatalíticas de materiais obtidos através de diferentes técnicas

Química Nova

Celso Camilo Moro²  Marla Azário Lansarin¹  Mônica Bagnara¹ 

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

关键词: titania nanotubos;    nitrogen-doped;    photocatalysis;   

DOI  :  10.1590/S0100-40422012000800013

来源: SciELO

【 摘 要 】

TiO2 nanotubes were synthesized by hydrothermal method and doped with three nitrogen compounds to enhance photocatalytic activity under visible light. Catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS) and specific surface area and pore volume determined by BET and BJH methods, respectively. Photocatalytic activity was evaluated by photodegradation of rhodamine B under visible and UV radiations. Results showed doped-nanotubes were more efficient under visible light. The best photocatalytic activity was for sample NTT-7-600/NH3I, being 30% higher than the non-doped sample.

【 授权许可】

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