Caracterização e propriedades do material coloidal nanoestruturado β-FeOOH/bentonita

Química Nova

Fauze Jacó Anaissi²  Juan Carlo Villalba²  Sérgio Toshio Fujiwara²  Luiz Fernando Cótica¹  Cláudio Roberto Lima De Souza¹  Patrício Zamora-peralta¹ 

[1] ,Universidade Estadual do Centro-Oeste Departamento de Química Guarapuava PR ,Brasil

关键词: iron hydroxide;    bentonite clay;    sol-gel materials;   

DOI  :  10.1590/S0100-40422009000800005

来源: SciELO

【 摘 要 】

A new mixed material was obtained through the combination of the suspensions of iron oxy-hydroxide and bentonite clay, denoted BFe. Analysis of its structure (XRD, Mossbauer and TGA) and composition (AAS) suggests the maintenance of the layer structure of the clay and an increase in the thermal stability of the BFe. Electrochemical studies performed in different electrolytes show that only in an alkaline medium it is possible to observe the redox peaks relative to the processes involving Fe+2/Fe+3 pair. Tests that evaluated the potential use of the photo-Fenton process showed an efficient degradation process of the dyes in significantly reduced reaction times.

【 授权许可】

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