Synthesis, characterization of Fe3O4@glycine doped polypyrrole magnetic nanocomposites and their potential performance to remove toxic Cr(VI)

被引：73

作者：

Ballav, N. ^{[1
]}

Choi, H. J. ^{[2
]}

Mishra, S. B. ^{[1
]}

Maity, A. ^{[3
,4
]}

机构：

[1] Univ Johannesburg, Dept Appl Chem, Johannesburg, South Africa

[2] Inha Univ, Dept Polymer Sci & Engn, Inchon 402751, South Korea

[3] CSIR, Smart Polymers Grp, ZA-0001 Pretoria, South Africa

[4] Univ South Africa UNISA, Dept Civil & Chem Engn, Pretoria, South Africa

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2014年 / 20卷 / 06期

关键词：

Polypyrrole; Glycine; Magnetic nanocomposite; Hexavalent chromium; Adsorption; HEXAVALENT CHROMIUM; AQUEOUS-SOLUTION; WASTE-WATER; ION REMOVAL; ADSORPTION; KINETICS; CARBON; EQUILIBRIUM; REDUCTION; MECHANISM;

D O I：

10.1016/j.jiec.2014.01.007

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fe3O4 coated glycine doped polypyrrole magnetic nanocomposite (Fe3O4@gly-PPy NC) was prepared via coating of suspended Fe3O4 nanoparticles with gly-PPy. FE-SEM and HR-TEM images indicated that Fe3O4 nanoparticles were encapsulated by precipitating gly-PPy moieties. Chromium(VI) adsorption followed a Langmuir isotherm with maximum capacity of 238-303 mg/g for a temperature range of 25-45 degrees C at pH 2. The adsorption process was governed by the ionic interaction and the reduction of Cr(VI) to Cr(III) by the PPy moiety. Results showed that NCs are effective adsorbents for the removal of Cr(VI) from wastewater and can be separated by external magnetic field from the reactor. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：4085 / 4093

页数：9

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