Heterogeneous Fenton reactants: a study of the behavior of iron oxide nanoparticles obtained by the polymeric precursor method

被引：21

作者：

Giraldi, Tania R. ^{[1
]}

Arruda, Cezar C. ^{[2
]}

da Costa, Geraldo M. ^{[4
]}

Longo, Elson ^{[1
]}

Ribeiro, Caue ^{[3
]}

机构：

[1] UNESP, LIEC, CMDMC, BR-14800900 Araraquara, SP, Brazil

[2] Univ Fed Sao Carlos, Sao Carlos, SP, Brazil

[3] Embrapa Instrumentacao Agropecuaria, BR-13560970 Sao Carlos, SP, Brazil

[4] Univ Fed Ouro Preto, Dept Quim, Ouro Preto, MG, Brazil

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2009年 / 52卷 / 02期

关键词：

Photodegradation; Dye; Water treatment; Ferrites; Polymeric precursors; CITRIC-ACID COMPLEX; REDUCED TEMPERATURES; COLLOIDAL SOLUTION; DECOMPOSITION; PHOTODEGRADATION; PESTICIDES; TITANATE; SYSTEM; ROUTE; WATER;

D O I：

10.1007/s10971-009-2014-2

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanoparticles composed of iron oxides and iron salts were obtained from polymeric resins produced by polymerizing Fe2+-citrate and Fe3+-citrate complexes with ethylene glycol. The citric acid:Fe molar ratio was varied to obtain different synthesis conditions. The materials were treated at 450 degrees C for 2 h to obtain nanoparticles, which were characterized by XRD, Mossbauer spectroscopy, FEG, CHNS, atomic absorption and surface area through N-2 physisorption. Rhodamine B photo degradation in the presence of these nanoparticles and hydrogen peroxide was carried out to analyze the possible behavior of nanoparticles as heterogeneous Fenton reactants. UV-visible spectroscopy revealed that the catalytic activity in the presence of nanoparticles obtained with a citric acid:Fe molar ratio of 12:1 was the condition that provided the best results in this work.

引用

页码：299 / 303

页数：5

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