Ultrafast and continuous synthesis of crystalline ferrite nanoparticles in supercritical ethanol
| hal.structure.identifier | Institut de Ciència de Materials de Barcelona [ICMAB] | |
| dc.contributor.author | PASCU, Oana | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MARRE, Samuel | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | AYMONIER, Cyril | |
| hal.structure.identifier | Institut de Ciència de Materials de Barcelona [ICMAB] | |
| dc.contributor.author | ROIG, Anna | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 2040-3364 | |
| dc.description.abstractEn | Magnetic nanoparticles (NPs) are of increasing interest in various industrially relevant products. For these, the development of greener and faster approaches facilitating scaling-up production is of paramount importance. Here, we report a novel, green and potentially scalable approach for the continuous and ultrafast (90 s) synthesis of superparamagnetic ferrite NPs (MnFe(2)O(4), Fe(3)O(4)) in supercritical ethanol (scEtOH) at a fairly moderate temperature (260 °C). ScEtOH exhibits numerous advantages such as its production from bio-resources, its lack of toxicity and its relatively low supercritical coordinates (p(c) = 6.39 MPa and T(c) = 243 °C), being therefore appropriate for the development of sustainable technologies. The present study is completed by the investigation of both in situ and ex situ NP surface functionalization. The as-obtained nanoparticles present good crystallinity, sizes below 8 nm, superparamagnetic behavior at room temperature and high saturation magnetization. Moreover, depending on the capping strategy, the ferrite NPs present extended (for in situ coated NPs) or short-term (for ex situ coated NPs) colloidal stability. | |
| dc.language.iso | en | |
| dc.publisher | Royal Society of Chemistry | |
| dc.subject.en | Supercritical fluids | |
| dc.subject.en | Ethanol | |
| dc.subject.en | Nanoparticles | |
| dc.subject.en | Ferrites | |
| dc.title.en | Ultrafast and continuous synthesis of crystalline ferrite nanoparticles in supercritical ethanol | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1039/c3nr33501a | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Nanoscale | |
| bordeaux.page | 2126-2132 | |
| bordeaux.volume | 5 | |
| bordeaux.issue | 5 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00789786 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00789786v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nanoscale&rft.date=2013&rft.volume=5&rft.issue=5&rft.spage=2126-2132&rft.epage=2126-2132&rft.eissn=2040-3364&rft.issn=2040-3364&rft.au=PASCU,%20Oana&MARRE,%20Samuel&AYMONIER,%20Cyril&ROIG,%20Anna&rft.genre=article |
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