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Title of Journal: J Nanopart Res

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Abbravation: Journal of Nanoparticle Research

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Springer Netherlands

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DOI

10.1007/1-4020-3604-3_11

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1572-896X

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A simple method for the preparation of colloidal p

Authors: Carmen Racles Iuliana Stoica Florica Doroftei Vasile Cozan
Publish Date: 2011/10/21
Volume: 13, Issue: 12, Pages: 6971-6980
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Abstract

Polysulfone−silver composite nanoparticles have been prepared by combining polymer nanoprecipitation and redox synthesis of silver in the presence of a glucosemodified cyclosiloxane as stabilizing agent Based on previous kinetic investigations and on model reactions we concluded that the reducing agent in this case is the tetrahydrofuran THF used as solvent for polysulfone Dynamic light scattering measurements on the obtained polymersilver composite particles indicated particle average diameter of 176 nm with a polydispersity index of 025 The UV–vis spectrum exhibited the silver plasmon resonance By different microscopic methods atomic force microscopy—AFM high resolution transmission electron microscopy—HRTEM and scanning electron microscopy—SEM larger polymer particles coated with silver nanoprticles were observed The Energy Dispersive XRay analysis—EDX confirmed the presence of Ag on the surface of the particles while the selected area electron diffraction showed single crystalline silver nanospheres with facecentered cubic structureThis research was financially supported by the European Regional Development Fund SOP IEC A2O21220092 ID 570 CODE SMISCSNR 12473 Contract 129/2010POLISILMET The authors are grateful to Dr Eugeniu Vasile from METAV Bucharest for HRTEM investigations and to Dr Maria Cazacu form ICMPP for helpful discussion

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