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http://repositorio.ufc.br/handle/riufc/71899
Tipo: | Artigo de Periódico |
Título : | Nanostructured LiFe5O8 by a biogenic method for applications from electronics to medicine |
Autor : | Teixeira, Silvia Soreto Graça, Manuel Pedro Fernandes Lucas, José Valente, Manuel Almeida Soares, Paula Isabel Pereira Lança, Maria Carmo Vieira, Tânia Silva, Jorge Carvalho Borges, João Paulo Borges Jinga, Luiza Izabela Socol, Gabriel Salgueiro, Cristiane Mello Salgueiro Nunes, José Costa, Luis Cadillon |
Palabras clave : | lithium ferrite;Proteic route;Coconut water powder;Ferrita de lítio;Rota proteica |
Fecha de publicación : | 2021 |
Editorial : | Nanomaterials |
Citación : | TEIXEIRA, Silvia Soreto; GRAÇA, Manuel Pedro Fernandes; LUCAS, José; VALENTE, Manuel Almeida; SOARES, Paula Isabel Pereira; LANÇA, Maria Carmo; VIEIRA, Tânia; SILVA, Jorge Carvalho; BORGES, João Paulo Borges; JINGA, Luiza Izabela; SOCOL, Gabriel; SALGUEIRO, Cristiane Mello Salgueiro; NUNES, José; COSTA, Luis Cadillon. Nanostructured LiFe5O8 by a biogenic method for applications from electronics to medicine. Nanomaterials, [s.l.], v. 11, p. 193, 2021. |
Abstract: | The physical properties of the cubic and ferrimagnetic spinel ferrite LiFe5O8 has made it an attractive material for electronic and medical applications. In this work, LiFe5O8 nanosized crystallites were synthesized by a novel and eco-friendly sol-gel process, by using powder coconut water as a mediated reaction medium. The dried powders were heat-treated (HT) at temperatures between 400 and 1000 °C, and their structure, morphology, electrical and magnetic characteristics, cytotoxicity, and magnetic hyperthermia assays were performed. The heat treatment of the LiFe5O8 powder tunes the crystallite sizes between 50 nm and 200 nm. When increasing the temperature of the HT, secondary phases start to form. The dielectric analysis revealed, at 300 K and 10 kHz, an increase of ε′ (≈10 up to ≈14) with a tan δ almost constant (≈0.3) with the increase of the HT temperature. The cytotoxicity results reveal, for concentrations below 2.5 mg/mL, that all samples have a non-cytotoxicity property. The sample heat-treated at 1000 °C, which revealed hysteresis and magnetic saturation of 73 emu g−1 at 300 K, showed a heating profile adequate for magnetic hyperthermia applications, showing the potential for biomedical applications. |
URI : | http://www.repositorio.ufc.br/handle/riufc/71899 |
ISSN : | 2079-4991 |
Aparece en las colecciones: | DEME - Artigos publicados em revista científica |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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2021_art_mpfgraça4.pdf | 3,18 MB | Adobe PDF | Visualizar/Abrir |
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