d-FeOOH : a superparamagnetic material for controlled heat release under AC magnetic field.

dc.contributor.authorChagas, Poliane
dc.contributor.authorSilva, Adilson Cândido da
dc.contributor.authorPassamani, Edson Caetano
dc.contributor.authorArdisson, José Domingos
dc.contributor.authorOliveira, Luiz Carlos Alves de
dc.contributor.authorFabris, José Domingos
dc.contributor.authorPaniago, Roberto Magalhães
dc.contributor.authorMonteiro, Douglas Santos
dc.contributor.authorPereira, Márcio César
dc.date.accessioned2017-07-04T13:05:14Z
dc.date.available2017-07-04T13:05:14Z
dc.date.issued2013
dc.description.abstractExperimental evidences on its in vitro use reveal that d-FeOOH is a material that release-controlled amount of heat if placed under an AC magnetic field. d-FeOOH nanoparticles were prepared by precipitating Fe(OH)2 in alkaline solution followed by fast oxidation with H2O2. XRD and 57Fe Mo¨ssbauer spectroscopy data confirmed that d-FeOOH is indeed the only iron-bearing compound in the produced sample. TEM images evidence that the averaged particle sizes for this d-FeOOH sample is 23 nm.Magnetization measurements indicate that these d-FeOOH particles behave superparamagnetically at 300 K; its saturationmagnetization was found to be 13.2 emu g-1; the coercivity and the remnant magnetization were zero at 300 K. The specific absorption rate values at 225 kHz were 2.1, 6.2, and 34.2 W g-1, under 38, 64, and 112 mT, respectively. The release rate of heat can be directly controlled by changing the mass of d-FeOOHnanoparticles. In view of these findings, the so-preparedd-FeOOHis a real alternative tobe further tested as amaterial formedicalpractices in therapies involving magnetic hyperthermia as in clinical oncology.pt_BR
dc.identifier.citationCHAGAS, P. et al. d-FeOOH: a superparamagnetic material for controlled heat release under AC magnetic field. Journal of Nanoparticle Research, v. 15, p. 1537-1544, 2013. Disponível em:<https://link.springer.com/article/10.1007%2Fs11051-013-1544-2>. Acesso em: 16 jun. 2017.pt_BR
dc.identifier.doihttps://doi.org/10.1007/s11051-013-1544-2
dc.identifier.issn1572-896X
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/8141
dc.identifier.uri2https://link.springer.com/article/10.1007%2Fs11051-013-1544-2pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectIron oxidespt_BR
dc.subjectHyperthermiapt_BR
dc.subjectMagnetic propertiespt_BR
dc.titled-FeOOH : a superparamagnetic material for controlled heat release under AC magnetic field.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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