期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 20, 期 6, 页码 4085-4093出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2014.01.007
关键词
Polypyrrole; Glycine; Magnetic nanocomposite; Hexavalent chromium; Adsorption
资金
- University of Johannesburg, South Africa
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.
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