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

Química Nova

Cótica, Luiz Fernando¹  Fujiwara, Sérgio Toshio¹  Universidade Federal do Paraná, Curitiba, Brasil¹  Carneiro, Livia Melo¹  Ignachewski, Franciély¹  Tauchert, Elias¹  Universidade Estadual do Centro-Oeste, Guarapuava, Brasil¹  Peralta-Zamora, Patricio¹ 

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 the preparation and characterization of a supported catalyst intended for degradation of reactive dyes by Fenton-like processes is described. The photocatalyst was prepared by immobilization of Fe3+ into the molecular sieve (4A type) surface and characterized by x-ray diffractometry and infrared, Mössbauer and EPR spectroscopy. The solid containing 0.94% (w/w) of ferric ions was used in degradation studies of aqueous reactive-dyes samples with really promissory results. Generally, Vis-assisted photochemical processes leads to almost total decolorization of all tested dyes at reaction times lower than 30 min. It was also observed that the iron-molecular sieve matrix can be reused.

【 授权许可】

Unknown