Journal
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
Volume 65, Issue 6, Pages 687-695Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jccs.201700413
Keywords
Polypyrrole; Magnetic composite; Chromium removal
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Funding
- Key Laboratory and Engineering Center of Independent Study of Northwest University for Nationalities [zyp2015016]
- Education Department of Gansu Province [2017B-82]
- Central Universities Fundamental Research fund [31920160011]
- National natural Science Foundation of China [51563022]
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In this work, the PPy/Fe3O4@TiO2 composite was synthesized and characterized by X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, and magnetic measurements (using a vibrating sample magnetometer). The adsorption performance of PPy/Fe3O4@TiO2 composite for Cr(VI) ions was evaluated by UV irradiation. The effects of pH, adsorbent dose, contact time, and the initial concentration on the adsorption performance of Cr(VI) onto PPy/Fe3O4@TiO2 were investigated. The maximum adsorption capacity of Cr(VI) upon doped PPy/Fe3O4@TiO2 is 85.30mg/g at room temperature. The total adsorption process likely follows the Langmuir model and pseudo-second-order kinetics. Our study suggests that the PPy/Fe3O4@TiO2 composite can be efficiently used for the adsorption of Cr(VI) ions.
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