Photo-assisted hetero-Fenton decolorization of azo dye from contaminated water by Fe-Si mixed oxide nanocomposite

被引：17

作者：

Rasoulifard, M. H. ^{[1
]}

Monfared, H. Hosseini ^{[1
]}

Masoudian, S. ^{[1
]}

机构：

[1] Zanjan Univ, Fac Sci, Dept Chem, Zanjan, Iran

来源：

ENVIRONMENTAL TECHNOLOGY | 2011年 / 32卷 / 14期

关键词：

Acid Red 14; nanocomposite; heterogeneous photo-Fenton; sol-gel; hydrogen peroxide; IRON-OXIDE; PHOTOCATALYTIC DEGRADATION; ORGANIC POLLUTANTS; ADVANCED OXIDATION; HYDROGEN-PEROXIDE; IRON(III) OXIDE; CATALYST; ACID; NANOPARTICLES; PHOTODEGRADATION;

D O I：

10.1080/09593330.2010.545996

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

An aerogel of silica gel dopeyd with 2.86 wt% Fe was prepared by an alkoxide sol-gel method and using tetraethyl orthosilicate as a precursor material. The synthesized aerogel was calcined at 500 degrees C to produce nanoparticle solids, and was characterized by XRD, FT-IR and SEM. The nanosized iron-silica gel mixed oxide was tested in the photooxidation of the azo dye Acid Red 14 (AR 14) using 30% aqueous hydrogen peroxide as oxidant and UV light. The 2.86 wt% Fe-loaded SiO2 showed very good efficiency in the decolorization of AR 14. The effects of various parameters including solution pH, catalyst, oxidant and initial dye concentrations on photodegradation were investigated and the optimum conditions were determined. The catalyst was resistant to leaching and could be recycled several times without appreciable loss of activity.

引用

页码：1627 / 1635

页数：9

共 39 条

[11] Degradation of azo-dye Orange II by a photoassisted Fenton reaction using a novel composite of iron oxide and silicate nanoparticles as a catalyst [J].