Ex situ integration of iron oxide nanoparticles onto exfoliated expanded graphite flakes in aqueous suspension
Abstract
Hybrid structures composed of exfoliated expanded graphite (EG) and iron oxide nanocrystals were 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 the support of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and N-hydroxysuccinnimide (NHS). EG flakes both naked and functionalized with branched polyethylenimine (PEI) were employed. Complete integration of the two constituents was achieved and stability was maintained for more than 12 months. No preferential spatial distribution of anchoring sites for attachment of iron oxide nanoparticles was observed, regardless of whether the EG flakes were used naked or functionalized with PEI molecules. The structural and physicochemical characteristics of the exfoliated expanded graphite and its hybrid nano-structures were investigated by SEM, TE...M, FTIR and Raman techniques.
Keywords:
expanded graphite / iron oxide nanoparticles / nanocomposites / TEM / Raman spectroscopySource:
Journal of the Serbian Chemical Society, 2014, 79, 9, 1155-1167Funding / projects:
- Magnetic and radionuclide labeled nanostructured materials for medical applications (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45015)
- Ministry of Education, Science and Technological Development of the Republic of Serbia
DOI: 10.2298/JSC131121019J
ISSN: 0352-5139
WoS: 000342524500009
Scopus: 2-s2.0-84918494417
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VinčaTY - JOUR AU - Jović, Nataša G. AU - Calatayud, Maria Pilar AU - Sanz, Beatriz AU - Montone, Amelia AU - Goya, Gerardo F. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/137 AB - Hybrid structures composed of exfoliated expanded graphite (EG) and iron oxide nanocrystals were 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 the support of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and N-hydroxysuccinnimide (NHS). EG flakes both naked and functionalized with branched polyethylenimine (PEI) were employed. Complete integration of the two constituents was achieved and stability was maintained for more than 12 months. No preferential spatial distribution of anchoring sites for attachment of iron oxide nanoparticles was observed, regardless of whether the EG flakes were used naked or functionalized with PEI molecules. The structural and physicochemical characteristics of the exfoliated expanded graphite and its hybrid nano-structures were investigated by SEM, TEM, FTIR and Raman techniques. T2 - Journal of the Serbian Chemical Society T1 - Ex situ integration of iron oxide nanoparticles onto exfoliated expanded graphite flakes in aqueous suspension VL - 79 IS - 9 SP - 1155 EP - 1167 DO - 10.2298/JSC131121019J ER -
@article{ author = "Jović, Nataša G. and Calatayud, Maria Pilar and Sanz, Beatriz and Montone, Amelia and Goya, Gerardo F.", year = "2014", abstract = "Hybrid structures composed of exfoliated expanded graphite (EG) and iron oxide nanocrystals were 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 the support of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and N-hydroxysuccinnimide (NHS). EG flakes both naked and functionalized with branched polyethylenimine (PEI) were employed. Complete integration of the two constituents was achieved and stability was maintained for more than 12 months. No preferential spatial distribution of anchoring sites for attachment of iron oxide nanoparticles was observed, regardless of whether the EG flakes were used naked or functionalized with PEI molecules. The structural and physicochemical characteristics of the exfoliated expanded graphite and its hybrid nano-structures were investigated by SEM, TEM, FTIR and Raman techniques.", journal = "Journal of the Serbian Chemical Society", title = "Ex situ integration of iron oxide nanoparticles onto exfoliated expanded graphite flakes in aqueous suspension", volume = "79", number = "9", pages = "1155-1167", doi = "10.2298/JSC131121019J" }
Jović, N. G., Calatayud, M. P., Sanz, B., Montone, A.,& Goya, G. F.. (2014). Ex situ integration of iron oxide nanoparticles onto exfoliated expanded graphite flakes in aqueous suspension. in Journal of the Serbian Chemical Society, 79(9), 1155-1167. https://doi.org/10.2298/JSC131121019J
Jović NG, Calatayud MP, Sanz B, Montone A, Goya GF. Ex situ integration of iron oxide nanoparticles onto exfoliated expanded graphite flakes in aqueous suspension. in Journal of the Serbian Chemical Society. 2014;79(9):1155-1167. doi:10.2298/JSC131121019J .
Jović, Nataša G., Calatayud, Maria Pilar, Sanz, Beatriz, Montone, Amelia, Goya, Gerardo F., "Ex situ integration of iron oxide nanoparticles onto exfoliated expanded graphite flakes in aqueous suspension" in Journal of the Serbian Chemical Society, 79, no. 9 (2014):1155-1167, https://doi.org/10.2298/JSC131121019J . .