Use este identificador para citar o ir al link de este elemento:
http://hdl.handle.net/1843/46409| Tipo: | Artigo de Periódico |
| Título: | Effect of drying process and calcination on the structural and magnetic properties of cobalt ferrite |
| Autor(es): | Sunday Joseph Olusegun Erico Tadeu Fraga Freitas Luciano Roni Silva Lara Humberto Osório Stumpf Nelcy Della Santina Mohallem |
| Resumen: | Synthesis of CoFe2O4 nanoparticles was carried out using a co-precipitation method. The resulting precipitate was dried by using conventional method (oven), and spray drying process. The products obtained from the two drying processes were calcined at 500 and 700 °C; and characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) transmission electron microscopy (TEM), and N2 gas adsorption technique. Magnetic measurements were performed on a SQUID magnetometer. The magnetic saturation value (76 emu g−1) of the spray dried cobalt ferrite calcined at 700 °C (SD-700) was higher than its corresponding oven-dried sample. The as-received spray dried CoFe2O4 nanoplates (SD-100) has the highest BET specific surface area (138 m2 g−1), while the oven-dried sample calcined at 700 °C (OD-700) has the lowest area (47 m2 g−1). Cobalt ferrite samples obtained from the two drying processes were briefly applied to adsorb methylene blue solution as a cationic dye model to know the effect of drying process on the adsorption of dye. The studies showed that all the spray dried samples performed better in adsorbing methylene blue (MB) solution. Energy-filtered TEM (EFTEM) analysis that was carried out on SD-700 ascertained the adsorption of MB on its surface. |
| Asunto: | Nanopartículas Raios X Difração Microscopia eletrônica Cobalto Ferrita Adsorção Carbenos (Compostos de metileno) |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Institución: | UFMG |
| Departamento: | ICX - DEPARTAMENTO DE QUÍMICA |
| Tipo de acceso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1016/j.ceramint.2019.01.197 |
| URI: | http://hdl.handle.net/1843/46409 |
| Fecha del documento: | 2019 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S0272884219302147 |
| metadata.dc.relation.ispartof: | Ceramics international |
| Aparece en las colecciones: | Artigo de Periódico |
archivos asociados a este elemento:
no existem archivos asociados a este elemento.
Los elementos en el repositorio están protegidos por copyright, con todos los derechos reservados, salvo cuando es indicado lo contrario.