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dc.contributor.authorCARNEIRO, M. E.pt_BR
dc.contributor.authorMAGALHAES, W. L. E.pt_BR
dc.contributor.authorBOLZON DE MUÑIZ, G. I.pt_BR
dc.contributor.authorNISGOSKI, S.pt_BR
dc.contributor.authorSATYANARAYANA, K. G.pt_BR
dc.date.accessioned2016-01-20T11:11:11Zpt_BR
dc.date.available2016-01-20T11:11:11Zpt_BR
dc.date.created2016-01-20pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationJournal of Bioprocessing & Biotechniques, v. 5, n. 2, Feb. 2015. 7 p.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1034471pt_BR
dc.descriptionWith 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.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectEquisetum arvensespt_BR
dc.subjectNanopartícula de sílicapt_BR
dc.subjectLavagem ácidapt_BR
dc.subjectCalcinaçãopt_BR
dc.subjectÁrea de superfíciept_BR
dc.subjectMorfologiapt_BR
dc.subjectSilica nanoparticlespt_BR
dc.subjectAcid washingpt_BR
dc.subjectCalcinationpt_BR
dc.subjectMorphologypt_BR
dc.titlePreparation and characterization of nano silica from Equisetum arvenses.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-01-25T11:11:11Zpt_BR
dc.subject.nalthesaurussurface areapt_BR
riaa.ainfo.id1034471pt_BR
riaa.ainfo.lastupdate2016-01-25pt_BR
dc.identifier.doihttp://dx.doi.org/10.4172/2155-9821.1000205pt_BR
dc.contributor.institutionMayara 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.pt_BR
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