Título:	Nanostructured glass-ceramic materials from glass waste with antimicrobial activity
Autor(es):	Caland, Juliani P. Baptista, João Peiter, Gabrielle Caroline Aguiar, Kelen M. F. Rossi de Sinnecker, João Paulo Felix, Jorlandio Francisco Schneider, Ricardo
ORCID:	https://orcid.org/0000-0003-2740-4286 https://orcid.org/0000-0002-8880-6986 https://orcid.org/0000-0001-7965-4434 https://orcid.org/0000-0002-4285-4050 https://orcid.org/0000-0002-2668-0409 https://orcid.org/0000-0001-5211-901X https://orcid.org/0000-0003-0986-1854
Afiliação do autor:	Universidade de Brasília, Instituto de Física, Núcleo de Física Aplicada Universidade Tecnológica Federal do Paraná, Group of Polymers and Nanostructures Universidade Tecnológica Federal do Paraná, Group of Polymers and Nanostructures Brazilian Center for Physics Research Brazilian Center for Physics Research Universidade de Brasília, Instituto de Física, Núcleo de Física Aplicada Universidade Tecnológica Federal do Paraná, Group of Polymers and Nanostructures
Assunto:	Vidro - resíduos Materiais vitrocerâmica Materiais antimicrobianos
Data de publicação:	6-Jul-2024
Editora:	MDPI
Referência:	CALAND, Juliani P. et al. Nanostructured glass-ceramic materials from glass waste with antimicrobial activity. Molecules, [S. l.], v. 29, n. 13, 3212, 2024. DOI: https://doi.org/10.3390/molecules29133212. Disponível em: https://www.mdpi.com/1420-3049/29/13/3212.
Abstract:	Modern consumption patterns have led to a surge in waste glass accumulating in municipal landfills, contributing to environmental pollution, especially in countries that do not have well-established recycling standards. While glass itself is 100% recyclable, the logistics and handling involved present significant challenges. Flint and amber-colored glass, often found in high quantities in municipal waste, can serve as valuable sources of raw materials. We propose an affordable route that requires just a thermal treatment of glass waste to obtain glass-based antimicrobial materials. The thermal treatment induces crystallized nanoregions, which are the primary factor responsible for the bactericidal effect of waste glass. As a result, coarse particles of flint waste glass that undergo thermal treatment at 720 °C show superior antimicrobial activity than amber waste glass. Glass-ceramic materials from flint waste glass, obtained by thermal treatment at 720 °C during 2 h, show antimicrobial activity against Escherichia coli after just 30 min of contact time. Laser-induced breakdown spectroscopy (LIBS) was employed to monitor the elemental composition of the glass waste. The obtained glass-ceramic material was structurally characterized by transmission electron microscopy, enabling the confirmation of the presence of nanocrystals embedded within the glass matrix.
Unidade Acadêmica:	Instituto de Física (IF)
Programa de pós-graduação:	Programa de Pós-Graduação em Física
Licença:	© 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
DOI:	https://doi.org/10.3390/molecules29133212
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