- Synthesis of polypyrrole nanoparticles and its grafting with silica gel for selective binding of chromium(VI).
Synthesis of polypyrrole nanoparticles and its grafting with silica gel for selective binding of chromium(VI).
Talanta (2011-01-18)
P Mondal, K Roy, S P Bayen, P Chowdhury
PMID21238740
ABSTRACT
Polypyrrole nanoparticles of desired structure have been synthesized through simple micelle technique. It is then grafted with functionalized silica gel to develop a novel organic-inorganic hybrid material. The role of dimethyl dichloro silane (coupling agent) in grafting is demonstrated. The nanoparticles are characterized by TEM, SEM and TGA. Grafting reactions are evaluated by spectral (FTIR) analysis and chemical test. The Cr(VI) binding behavior of the composite is studied in various pH of the medium. The selectivity in binding Cr(VI) is monitored. The metal ion adsorption capacity and surface area of the material are found to be 38 mg/g and 235 m(2)/g, respectively.
MATERIALI
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Descrizione del prodotto
Sigma-Aldrich
Dichlorodimethylsilane, produced by Wacker Chemie AG, Burghausen, Germany, ≥99.0% (GC)