Journal
CHEMICAL ENGINEERING JOURNAL
Volume 251, Issue -, Pages 413-421Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2014.04.074
Keywords
PANI/TWMP nanocomposite; Ion exchanger; Binary separations; Toxic metals
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Funding
- Deanship of Scientific Research, College of Science Research Center, King Saud University, Saudi Arabia
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Polyaniline Th(IV) tungstomolybdophosphate (PANI/TWMP) nanocomposite ion exchanger was prepared via sol-gel method by mixing polyaniline gel into the inorganic precipitates of Th(IV) tungstomolybdophosphate (TWMP). The PANI/TWMP nanocomposite ion exchanger was well characterized using FTIR, XRD, SEM and TEM techniques. Thermal stability, elution behavior, effect of eluent concentration and pH titrations curves of PANI/TWMP were also investigated. The study revealed that PANI/TWMP nancomposite had higher ion exchange capacity (1.07 meq/g) compared to its inorganic counterpart TWMP (0.78 meq/g) and organic counterpart PANI (0.30 meq/g). The PANI/TWMP nanocomposite ion exchanger was found thermally stable and retained 53.27% ion exchange capacity upto 400 degrees C. On the basis of selectivity studies, some important binary separations were also achieved to explore the potential application of PANI/TWMP in the environmental analysis of toxic heavy metals. PANI/TWMP was also effectively used in separations of Cu2+ and Pb2+ ions from synthetic mixtures of metal ions. (C) 2014 Elsevier B.V. All rights reserved.
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