Geração de Filmes de Titânia meso-macroporosa por Modelagem de Esferas de Látex

• Autor(a) principal: Moreira, Weverton Martiniano
• Data de Publicação: 2021
• Outros Autores: Cavalcante, Giselly Correia, Freitas, Johnnatan Duarte de, Sousa, Jonas dos Santos, Freitas, Alan John Duarte de, Barros Filho, Djalma de Albuquerque
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Diversitas Journal
• Texto Completo: https://diversitasjournal.com.br/diversitas_journal/article/view/1488

  ABSTRACT: This article deals with the synthesis and formation of mesoporous titania films by latex beads templating. The infiltration of latex template by titanium precursor solution resulted in compact films that generated an inverted pore network resulting from the latex removal as it was observed by Scanning Electron Microscopy (SEM) measurements. The goal of this work is to analyze the deposition of latex beads on glassy substrates and eventual infiltration by precursor solution of mesoporous titania. The final product was bulky films with porosity in the micrometric scale defined by latex beads. The synthesis of latex beads was carried out in the absence of N2 and the titania precursor solution was obtained from the ternary system: HCl/P-123/1 Butanol. The characterization of films by SEM was carried out after the removal of latex template by calcination in a tubular oven. The appearance of films was compact for 30% V/Vo  dispersion concentration and there was a well-defined pore network observed in the SEM characterization associated with the presence of latex beads that assembles by Solvent Controlled Evaporation (SCE) technique. SEM characterization showed that latex beads coated on glass substrates and formed a network structure that could be applied to functional devices like solar cells, catalizers and batteries.  It is necessary to decrease the concentration of the dispersion to form films with homogeneous monolayers that become transparent to visible light. KEYWORDS: Nanotechnology, semiconductor oxide, self-structured materials.