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| Registros recuperados : 32 | |
| 6. |  | MARINHO, N. P.; NISGOSKI, S.; BOLZON DE MUÑIZ, G. I. Avaliação das dimensões das fibras de colmos de bambu, Dendrocalamus giganteus (Wall) Munro, em diferentes idades. Ciência Florestal, Santa Maria, v. 24, n. 1, p. 251-256, jan./mar. 2014. Nota Técnica.| Biblioteca(s): Embrapa Florestas. |
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| 11. | | MARINHO, N. P.; NISGOSKI, S.; KLOCK, U.; ANDRADE, A. S. de; BOLZON de MUÑIZ, G. I. Análise química do bambu-gigante (Dendrocalamus giganteus Wall. ex Munro) em diferentes idades. Ciência Florestal, Santa Maria, RS, v. 22, n. 2, p. 417-422, jul./set. 2012.| Biblioteca(s): Embrapa Florestas. |
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| 14. | | FABROWSKI, F. J.; BOLZON de MUÑIZ, G. I; NAKASHIMA, T.; NISGOSKI, S.; KLOCK, U. Investigação da presença de óleo essencial em Eucalyptus smithii R.T. Baker por meio da anatomia de seu lenho e casca. Ciência Florestal, Santa Maria, v. 13, n. 1, p. 95-106, jun. 2003.| Biblioteca(s): Embrapa Florestas. |
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| 15. | | KLOCK, U.; MUNIZ, G. I. B.; BONDUELLE, G. M.; NISGOSKI, S.; BOTOSSO, P. Determinação das características morfológicas dos traqueóides da madeira juvenil de Pinus taeda L e Pinus maximinoi H. E. Moore. SBPN - Scientific Journal, Curitiba, v. 4, supl. 1, p. 73, 2000. Edição dos Anais da 8ª Reunião Anual da Sociedade Brasileira de Pesquisadores Nikkeis, Curitiba, 2000. Resumos.| Biblioteca(s): Embrapa Florestas. |
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| 17. | | PEREIRA, S. de J.; BOLZON de MUÑIZ, G. I.; KAMINSKI, M.; KLOCK, U.; NISGOSKI, S.; FABROWSKI, F. J. Celulose de buriti (Mauritia vinifera Martius). Scientia Forestalis, Piracicaba, n. 63, p. 202-213, jun. 2003.| Biblioteca(s): Embrapa Florestas. |
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| 18. | | PEREIRA, S. de J.; BOLZON de MUNIZ, G. I.; KAMINSKI, M.; KLOCK, U.; NISGOSKI, S.; FABROWSKI, F. J. Celulose de tucum (Bactris inundata Martius). Scientia Forestalis, Piracicaba, n. 65, p. 130-140, jun. 2004.| Biblioteca(s): Embrapa Florestas. |
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| 19. | | MARINHO, N. P.; BOLZON de MUÑIZ, G. I.; NISGOSKI, S.; KLOCK, U.; ANDRADE, A. S. de; MAGALHAES, W. L. E. Compósito à base de poli(hidroxibutirato) (PHB) reforçado com fibras de rami espécie Bohemeria nivea. In: CONGRESSO BRASILEIRO DE POLÍMEROS, 13., 2015, Natal. Anais. [São Carlos: Associação Brasileira de Polímeros], 2015. 5 p. Disponível online.| Biblioteca(s): Embrapa Florestas. |
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| 20. | | NISGOSKI, S.; MAGALHAES, W. L. E.; BATISTA, F. R. R.; FRANÇA, R. F.; BOLZON DE MUÑIZ, G. I. Anatomical and energy characteristics of charcoal made from five species. Acta Amazonica, Manaus, v. 44, n. 3, p. 367-372, 2014.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 32 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
20/01/2016 |
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Data da última atualização: |
25/01/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
CARNEIRO, M. E.; MAGALHAES, W. L. E.; BOLZON DE MUÑIZ, G. I.; NISGOSKI, S.; SATYANARAYANA, K. G. |
|
Afiliação: |
Mayara E. Carneiro, UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; Graciela I. Bolzon de Muñiz, UFPR; Silvana Nisgoski, UFPR; Kestur Gundappa Satyanarayana, Professor visitante na Embrapa Florestas / Poornaprajna Scientific Institute for Research. |
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Título: |
Preparation and characterization of nano silica from Equisetum arvenses. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Journal of Bioprocessing & Biotechniques, v. 5, n. 2, Feb. 2015. 7 p. |
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DOI: |
http://dx.doi.org/10.4172/2155-9821.1000205 |
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Idioma: |
Inglês |
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Conteúdo: |
With the progress of nanotechnology and increase in demand, several silica processing industries have started producing silica nanoparticles. As a result, the search for new sources capable of producing this material has been attracting the interest of many researchers. With this background, a study was carried out to obtain silica nano particles from the Equisetum arvenses, a plant that possesses one of the highest amounts of silicon. This paper presents the preparation of nano silica particles with different combinations of acid washing and calcination at varying temperatures between 773 K and 873 K. The nanoparticles produced were characterized for nitrogen adsorption, morphology using transmission electron microscope and structural analysis by X-ray fluorescence and diffraction. It was found that nanoparticles produced by two cycles of acid washing and calcination at 773 K gave the best results, producing a material with white color, the highest specific surface area of about 330 m²/g with diameter of about 8 nm, and 93.5% of amorphous silica. The nanoparticles obtained can be potential industrial raw material for many applications. |
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Palavras-Chave: |
Acid washing; Área de superfície; Calcinação; Calcination; Equisetum arvenses; Lavagem ácida; Morfologia; Morphology; Nanopartícula de sílica; Silica nanoparticles. |
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Thesaurus NAL: |
surface area. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/137346/1/2015-Washington-BB-Preparations.pdf
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Marc: |
LEADER 02103naa a2200313 a 4500
001 2034471
005 2016-01-25
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4172/2155-9821.1000205$2DOI
100 1 $aCARNEIRO, M. E.
245 $aPreparation and characterization of nano silica from Equisetum arvenses.$h[electronic resource]
260 $c2015
520 $aWith the progress of nanotechnology and increase in demand, several silica processing industries have started producing silica nanoparticles. As a result, the search for new sources capable of producing this material has been attracting the interest of many researchers. With this background, a study was carried out to obtain silica nano particles from the Equisetum arvenses, a plant that possesses one of the highest amounts of silicon. This paper presents the preparation of nano silica particles with different combinations of acid washing and calcination at varying temperatures between 773 K and 873 K. The nanoparticles produced were characterized for nitrogen adsorption, morphology using transmission electron microscope and structural analysis by X-ray fluorescence and diffraction. It was found that nanoparticles produced by two cycles of acid washing and calcination at 773 K gave the best results, producing a material with white color, the highest specific surface area of about 330 m²/g with diameter of about 8 nm, and 93.5% of amorphous silica. The nanoparticles obtained can be potential industrial raw material for many applications.
650 $asurface area
653 $aAcid washing
653 $aÁrea de superfície
653 $aCalcinação
653 $aCalcination
653 $aEquisetum arvenses
653 $aLavagem ácida
653 $aMorfologia
653 $aMorphology
653 $aNanopartícula de sílica
653 $aSilica nanoparticles
700 1 $aMAGALHAES, W. L. E.
700 1 $aBOLZON DE MUÑIZ, G. I.
700 1 $aNISGOSKI, S.
700 1 $aSATYANARAYANA, K. G.
773 $tJournal of Bioprocessing & Biotechniques$gv. 5, n. 2, Feb. 2015. 7 p.
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Embrapa Florestas (CNPF) |
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