A heterogeneous photocatalysis study of decolorization of synthetic dyes on Ti/TiO

Quimica nova

Cervantes, Thiago N. M.¹  Santana, Henrique de¹  Zaia, Dimas A. M.¹ 

[1] Universidade Estadual de Londrina, Londrina, Brasil

关键词: heterogeneous photocatalysis;    titanium dioxide;    synthetic dyes.;   

DOI  :  10.1590/S0100-40422009000900035

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The main goal ofthis paper was to study the degradation of synthetic dyes using photoelectrocatalyticproperties of particulate films of TiO2 supported on plates of titaniumand stimulated by UV-Vis radiation. The dyes decolorizations were measured usingspectrophotometric methods to verify which the conditions on Ti/TiO2 electrodewas the best for the photoelectrodegradation of them. The results showed thatdecolorization rates were higher than 90% during a period of 270 min. FT-IRspectroscopy showed that intermediate substances were formed after the decolorizationand N=N group/aromatic structures were preserved independently of the specificstructure of the dyes.

【 授权许可】

CC BY