Degradation of reactive dyes by photo-fenton process using Fe3+ immobilized in molecular sieve 4A

Quimica nova

Fujiwara, Sérgio Toshio¹  Cótica, Luiz Fernando¹  Ignachewski, Franciély¹  Carneiro, Livia Melo²  Tauchert, Elias²  Peralta-Zamora, Patricio² 

[1] Universidade Estadual do Centro-Oeste, Guarapuava, Brasil;Universidade Federal do Paraná, Curitiba, Brasil

关键词: degradation of reactive dyes;    Fe3+ immobilized;    Fenton-like.;   

DOI  :  10.1590/S0100-40422010000800004

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this work thepreparation and characterization of a supported catalyst intended for degradationof reactive dyes by Fenton-like processes is described. The photocatalyst wasprepared by immobilization of Fe3+ into the molecular sieve (4A type)surface and characterized by x-ray diffractometry and infrared, Mössbauerand EPR spectroscopy. The solid containing 0.94% (w/w) of ferric ions was usedin degradation studies of aqueous reactive-dyes samples with really promissoryresults. Generally, Vis-assisted photochemical processes leads to almost totaldecolorization of all tested dyes at reaction times lower than 30 min. It wasalso observed that the iron-molecular sieve matrix can be reused.

【 授权许可】

CC BY