Recobrimento de Superfícies metálicas por Filmes de Titânia meso-macroporosa

Giselly Correia Cavalcante; Djalma de Albuquerque Barros Filho; Alan John Duarte de Freitas; Jonas dos Santos Sousa; Johnnatan Duarte de Freitas; Weverton Martiniano Moreira

doi:10.17648/diversitas-journal-v6i1-1467

Recobrimento de Superfícies metálicas por Filmes de Titânia meso-macroporosa

Authors

Giselly Correia Cavalcante Instituto Federal de Alagoas https://orcid.org/0000-0003-0592-6104
Djalma de Albuquerque Barros Filho Instituto Federal de Alagoas https://orcid.org/0000-0001-7612-0816
Alan John Duarte de Freitas Instituto Federal de Alagoas https://orcid.org/0000-0001-9673-7338
Jonas dos Santos Sousa Instituto Federal de Alagoas http://orcid.org/0000-0003-0498-1152
Johnnatan Duarte de Freitas Instituto Federal de Alagoas https://orcid.org/0000-0002-6977-3322
Weverton Martiniano Moreira Instituto Federal de Alagoas https://orcid.org/0000-0002-5362-738X

DOI:

https://doi.org/10.17648/diversitas-journal-v6i1-1467

Abstract

ABSTRACT: Improvement of porous materials has been one of the goals of nanotechnology. There is an increasingly real need to understand the mechanisms that generate self-structured materials specifically those that originate from colloidal particle templates such as: polymers, silica, titania and silicon. These templates are important to produce devices with industrial applications such as: solar cells, desalinizers, batteries and photonic crystals. One of the main difficulties encountered in the application of colloidal particles is to produce them on a large scale with uniform size and deposit them on flat surfaces so that they can homogeneously cover a substrate forming crystallographic domains on a micrometric scale. The objective of this work is to analyze the formation of nanocrystalline films of titania on metallic surfaces that were characterized by scanning electron microscopy (SEM). The metallic substrates were commercial steel plates found in hardware stores. The substrate was covered with latex beads infiltrated by a precursor solution of titania and subsequently heat treated in a tubular oven at 600 ^oC for one hour. It is observed that the metallic substrate influences the topography of the mesoporous titania film resulting in a lamellar structure in which interaction with the external environment is suitable. These results show that the nature of the substrate directly influences the topography of the mesoporous titania, which is no longer hexagonal with ordered pores but lamellar allowing the production of self-cleaning membranes with direct application in civil construction.

KEYWORDS: Colloidal particles, Metallic substrates, Lamelar structure.

Metrics

Metrics Loading ...

Author Biography

Djalma de Albuquerque Barros Filho, Instituto Federal de Alagoas

Possui graduação em Física pelo Instituto de Física e Química de São Carlos da Universidade de São Paulo (1990), mestrado em Física pelo Instituto de Física e Química de São Carlos da Universidade de São Paulo (1992) e doutorado em Físico-Química pelo Instituto de Física e Química de São Carlos da Universidade de São Paulo (1997). Pós-Doutorado pela Universidade de Toronto em 1999 e Pós-Doutorado pela UNESP em 2001. Participou como pesquisador na Universidade Bandeirante de São Paulo como membro do corpo docente do Mestrado Profissional de Biomateriais da UNIBAN Brasil até 2012.Tem experiência na área de Física, com ênfase em Físico-Química, atuando principalmente nos seguintes temas: sol-gel, materiais óxidos, modelagem química, cristais fotônicos e fotoeletroquímica. Atualmente, é professor do Instituto Federal de Alagoas Campus Maceió com Dedicação Exclusiva atuando na orientação de bolsistas de iniciação científica e focado no desenvolvimento de modelagem de titânia meso-macroporosa a ser aplicada em biomateriais, células solares e dessalinização dos oceanos.

Downloads

PDF (Português (Brasil))

Published

2021-01-30

How to Cite

Cavalcante, G. C., Barros Filho, D. de A., Freitas, A. J. D. de, Sousa, J. dos S., Freitas, J. D. de, & Moreira, W. M. (2021). Recobrimento de Superfícies metálicas por Filmes de Titânia meso-macroporosa . Diversitas Journal, 6(1), 848–858. https://doi.org/10.17648/diversitas-journal-v6i1-1467

Download Citation

Issue

Vol. 6 No. 1 (2021): Práticas e reflexões sobre ensino, pesquisa e extensão

Section

Ciências Exatas

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The Diversitas Journal expresses that the articles are the sole responsibility of the Authors, who are familiar with Brazilian and international legislation.

Articles are peer-reviewed and care should be taken to warn of the possible incidence of plagiarism. However, plagiarism is an indisputable action by the authors.

The violation of copyright is a crime, provided for in article 184 of the Brazilian Penal Code: “Art. 184 Violating copyright and related rights: Penalty - detention, from 3 (three) months to 1 (one) year, or fine. § 1 If the violation consists of total or partial reproduction, for the purpose of direct or indirect profit, by any means or process, of intellectual work, interpretation, performance or phonogram, without the express authorization of the author, the performer, the producer , as the case may be, or whoever represents them: Penalty - imprisonment, from 2 (two) to 4 (four) years, and a fine. ”