Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | Freitas, Victor A. A. | - |
| dc.creator | Maia, Laura A. | - |
| dc.creator | Belardinelli, Rolando Elio | - |
| dc.creator | Ardisson, Jose D. | - |
| dc.creator | Pereira, Márcio C. | - |
| dc.creator | Oliveira, Luiz C. A. | - |
| dc.date | 2018-09-21T15:56:51Z | - |
| dc.date | 2018-09-21T15:56:51Z | - |
| dc.date | 2017-03 | - |
| dc.date | 2018-09-20T13:11:09Z | - |
| dc.date.accessioned | 2019-04-29T15:51:03Z | - |
| dc.date.available | 2019-04-29T15:51:03Z | - |
| dc.date.issued | 2017-03 | - |
| dc.identifier | Freitas, Victor A. A.; Maia, Laura A.; Belardinelli, Rolando Elio; Ardisson, Jose D.; Pereira, Márcio C.; et al.; Magnetic iron species highly dispersed over silica: use as catalysts for removal of pollutants in water; Springer Heidelberg; Environmental Science and Pollution Research; 24; 7; 3-2017; 6114-6125 | - |
| dc.identifier | 0944-1344 | - |
| dc.identifier | http://hdl.handle.net/11336/60564 | - |
| dc.identifier | 1614-7499 | - |
| dc.identifier | CONICET Digital | - |
| dc.identifier | CONICET | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/303680 | - |
| dc.description | Fe2O3-SiO2 composites were prepared by impregnation (sample FeIMP) or doping (sample FeDOP) in the structure of porous silica. The dye removal capacity of the materials was investigated through adsorption and oxidation studies of methylene blue and rhodamine B. N2 adsorption/desorption measurements on FeIMP and FeDOP resulted in specific areas of 27 and 235 m2 g−1, respectively. Mössbauer spectroscopy and XRD data detected hematite and maghemite as the iron phases in the samples FeIMP and FeDOP, respectively. Adsorption isotherms and kinetic studies of the dyes were better fitted in DKR model for FeDOP, where the process follows a pseudo-second order with the interparticle diffusion step being the rate-limiting step. On the other hand, FeIMP has better fit in the Langmuir model. Photocatalytic activity was observed in FeDOP under UV irradiation by the presence of reaction-hydroxylated intermediates for MB (m/z = 301) and RhB (m/z = 459). However, the photocatalytic activity was strongly influenced by the adsorption affinity between dye/catalyst. Photogenerated holes are the species responsible for the dye degradation when the adsorption is too strong, while hydroxyl radical action will be favored when the adsorption is not vigorous as detected by ESI-MS. | - |
| dc.description | Fil: Freitas, Victor A. A.. Universidade Federal de Minas Gerais; Brasil | - |
| dc.description | Fil: Maia, Laura A.. Universidade Federal de Minas Gerais; Brasil | - |
| dc.description | Fil: Belardinelli, Rolando Elio. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada ; Argentina | - |
| dc.description | Fil: Ardisson, Jose D.. Centro de Desenvolvimento da Tecnologia Nuclear; Brasil | - |
| dc.description | Fil: Pereira, Márcio C.. Universidade Federal dos Vales do Jequitinhonha e Mucuri; Brasil | - |
| dc.description | Fil: Oliveira, Luiz C. A.. Universidade Federal de Minas Gerais; Brasil | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | Springer Heidelberg | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11356-016-6495-6 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11356-016-6495-6 | - |
| dc.rights | info:eu-repo/semantics/restrictedAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.subject | ADSORPTION | - |
| dc.subject | DKR | - |
| dc.subject | IRON OXIDE | - |
| dc.subject | KINETIC | - |
| dc.subject | PHOTOCATALYSIS | - |
| dc.subject | PHOTOGENERATED SPECIES | - |
| dc.subject | Otras Ciencias Químicas | - |
| dc.subject | Ciencias Químicas | - |
| dc.subject | CIENCIAS NATURALES Y EXACTAS | - |
| dc.title | Magnetic iron species highly dispersed over silica: use as catalysts for removal of pollutants in water | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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