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Polyacrylonitrile / silica nanospheres with three - dimensional interpenetrating network structure and their application for removal of Pb (II) from water / Qingchun Zhao in Industrial & engineering chemistry research, Vol. 51 N° 13 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4952–4957 Titre : Polyacrylonitrile / silica nanospheres with three - dimensional interpenetrating network structure and their application for removal of Pb (II) from water Type de document : texte imprimé Auteurs : Qingchun Zhao, Auteur ; Tian Cao, Auteur Année de publication : 2012 Article en page(s) : pp. 4952–4957 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Nanospheres  Thermogravimetric  analysis  Adsorption  Aqueous  solutions Résumé : Polyacrylonitrile/silica nanospheres with three-dimensional interpenetrating network structure have been synthesized via emulsion polymerization method using 0.08 g azobisisbutyronitrile (AIBN) as initiator, 5 g acrylonitrile, and 5 g γ-methacryloxypropyl trimethoxy silane as monomer, 0.85 g dodecylbenzene sulfate as emulsifier at 60 °C for 10 h. The composition and morphology of the obtained nanospheres were investigated by infrared spectrum, thermogravimetric analysis, and scanning electron microscopy, respectively. The obtained polyacrylonitrile/silica nanospheres were used to investigate adsorption Pb(II) from aqueous solutions. The research results display that composite material has high adsorption capacity at optimum pH = 5. The maximum adsorption capacity was 0.108 mmol/g within 300 min at 25 °C. The pseudo-first-order equation and the pseudo-second-order equation are applied to analyze the experimental data. Adsorption behavior for Pb(II) onto nanospheres belongs to the pseudo-second-order kinetic model, and the adsorption process is a chemical process. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3000024 [article] Polyacrylonitrile / silica nanospheres with three - dimensional interpenetrating network structure and their application for removal of Pb (II) from water [texte imprimé] / Qingchun Zhao, Auteur ; Tian Cao, Auteur . - 2012 . - pp. 4952–4957. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4952–4957 Mots-clés : Nanospheres  Thermogravimetric  analysis  Adsorption  Aqueous  solutions Résumé : Polyacrylonitrile/silica nanospheres with three-dimensional interpenetrating network structure have been synthesized via emulsion polymerization method using 0.08 g azobisisbutyronitrile (AIBN) as initiator, 5 g acrylonitrile, and 5 g γ-methacryloxypropyl trimethoxy silane as monomer, 0.85 g dodecylbenzene sulfate as emulsifier at 60 °C for 10 h. The composition and morphology of the obtained nanospheres were investigated by infrared spectrum, thermogravimetric analysis, and scanning electron microscopy, respectively. The obtained polyacrylonitrile/silica nanospheres were used to investigate adsorption Pb(II) from aqueous solutions. The research results display that composite material has high adsorption capacity at optimum pH = 5. The maximum adsorption capacity was 0.108 mmol/g within 300 min at 25 °C. The pseudo-first-order equation and the pseudo-second-order equation are applied to analyze the experimental data. Adsorption behavior for Pb(II) onto nanospheres belongs to the pseudo-second-order kinetic model, and the adsorption process is a chemical process. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3000024