Ex situ integration of iron oxide nanoparticles onto the exfoliated expanded graphite flakes in water suspension | Zendy

N. Jović | Zendy; M. Pilar Calatayud | Zendy; Beatriz Sanz | Zendy; Amelia Montone | Zendy; Gerardo F. Goya | Zendy

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Ex situ integration of iron oxide nanoparticles onto the exfoliated expanded graphite flakes in water suspension

Author(s) -

N. Jović,

M. Pilar Calatayud,

Beatriz Sanz,

Amelia Montone,

Gerardo F. Goya

Publication year - 2014

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc131121019j

Subject(s) - chemical engineering , materials science , nanoparticle , graphite , iron oxide , fourier transform infrared spectroscopy , graphite oxide , oxide , aqueous solution , polyethylenimine , acrylic acid , polymer chemistry , nuclear chemistry , nanotechnology , chemistry , organic chemistry , polymer , metallurgy , composite material , copolymer , engineering , transfection , biochemistry , gene

Hybrid structures composed of exfoliated expanded graphite (EG) and iron oxide nanocrystals have been produced by an ex situ process. The iron oxide nanoparticles coated with meso-2,3-dimercaptosuccinic acid (DMSA), or poly(acrylic) acid (PAA) were integrated onto the exfoliated EG flakes by mixing their aqueous suspensions at room temperature under support of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and N-hydroxysuccin-nimide (NHS). EG flakes have been used both, naked and functionalized with branched polyethylenimine (PEI). Complete integration of two constituents has been achieved and mainteined stable for more than 12 months. No preferential spatial distribution of anchoring sites for attachement of iron oxide nanoparticles has been observed, regardless EG flakes have been used naked or functionalized with PEI molecules. The structural and physico-chemical characteristics of the exfoliated expanded graphite and its hybrids nanostructures has been investigated by SEM, TEM, FTIR and Raman techniques. [Projekat Ministarstva nauke Republike Srbije, br. 45015

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