Obtenção e caracterização de nitreto de boro hexagonal

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dc.contributor.advisorGuevara Carrió, Juan Alfredo
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/3358090638386343por
dc.contributor.authorGonçalves, Augusto Nobre
dc.creator.Latteshttp://lattes.cnpq.br/1557063709034165por
dc.date.accessioned2017-04-24T13:50:07Z
dc.date.accessioned2020-05-28T18:07:35Z
dc.date.available2020-05-28T18:07:35Z
dc.date.issued2016-07-29
dc.description.abstractThis work proposes alternative obtainment and characterization of two bidimensional nanomaterial: graphene and hexagonal boron nitride (h-BN). The graphene synthesis considers two variables, the under pressure diffusion of graphite powder in phyllosilicate powder and the exfoliation of homogenized pressed body by sonication in presence of a dispersant. This research aims to contribute prposing alternative techniques for the graphene production research that can result in a robust process with generation of large masses of the material. Through the proposed technique it was possible to contemplate significant volume of few layers graphene. However, the low particle size of the original graphite used only generated graphene with micrometric dimensions. The h-BN presented synthesis aimed to resolve two industrial problems associated with h-BN synthesis: the high temperature required for material calcination and the exclusion of sodium azide as a process reactant. The sodium azide is toxic and has high commercialization value and its purchase is controlled by military. The results indicate that proposed synthesis is effective in reducing the calcination temperature of the h-BN to below 1000 °C without the use of sodium azide. However, there are environmental control requirements to perform the technique as a result of the large volume of ammonia released by the system.eng
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dc.identifier.citationGONÇALVES, Augusto Nobre. Obtenção e caracterização de nitreto de boro hexagonal. 2016. 85 f. Dissertação (Engenharia de Materiais) - Universidade Presbiteriana Mackenzie, São Paulo .por
dc.identifier.urihttp://dspace.mackenzie.br/handle/10899/24225
dc.keywordsgrapheneeng
dc.keywordsboron nitrideeng
dc.keywordstwo-dimensional materialseng
dc.keywordsnanomaterialseng
dc.languageporpor
dc.publisherUniversidade Presbiteriana Mackenziepor
dc.rightsAcesso Restritopor
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectgrafenopor
dc.subjectnitreto de boropor
dc.subjectmateriais bidimensionaispor
dc.subjectnanomateriaispor
dc.subject.cnpqCNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS::EXTRACAO E TRANSFORMACAO DE MATERIAISpor
dc.titleObtenção e caracterização de nitreto de boro hexagonalpor
dc.typeDissertaçãopor
local.contributor.board1Terence, Mauro César
local.contributor.board1Latteshttp://lattes.cnpq.br/0310437722311048por
local.contributor.board2Santos, Denise Ribeiro dos
local.contributor.board2Latteshttp://lattes.cnpq.br/2042903123178925por
local.publisher.countryBrasilpor
local.publisher.departmentEscola de Engenharia Mackenzie (EE)por
local.publisher.initialsUPMpor
local.publisher.programEngenharia de Materiaispor
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