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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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Autoria: |
CARNEIRO, M. E.; MAGALHAES, W. L. E.; BOLZON DE MUÑIZ, G. I.; NISGOSKI, S.; SATYANARAYANA, K. G. |
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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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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
11/08/2008 |
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Data da última atualização: |
30/11/2009 |
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Tipo da produção científica: |
Artigo de Divulgação na Mídia |
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Autoria: |
MOURÃO, G. de M. |
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Afiliação: |
Guilherme de Miranda Mourão, Embrapa Pantanal. |
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Título: |
Corredores ecológicos e ecoturismo no Pantanal. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Corumbá: Embrapa Pantanal, 2001. |
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Páginas: |
3 p. |
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Série: |
(Embrapa Pantanal. Artigo de Divulgação na Mídia, 14). |
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Idioma: |
Português |
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Notas: |
Formato eletrônico. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAP/56451/1/ADM014.pdf
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Marc: |
LEADER 00425nam a2200133 a 4500
001 1803762
005 2009-11-30
008 2001 bl uuuu u00u1 u #d
100 1 $aMOURÃO, G. de M.
245 $aCorredores ecológicos e ecoturismo no Pantanal.$h[electronic resource]
260 $aCorumbá: Embrapa Pantanal$c2001
300 $a3 p.
490 $a(Embrapa Pantanal. Artigo de Divulgação na Mídia, 14).
500 $aFormato eletrônico.
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Registro original: |
Embrapa Pantanal (CPAP) |
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