Nanostructured silver vanadate as a promising antibacterial additive to water-based paints

Autor(es)

Holtz, Raphael D. ^[1] ; Lima, Bruna A. ^[2] ; Souza Filho, Antonio G. ^[3] ; Brocchi, Marcelo ^[2] ; Alves, Oswaldo L. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Chem, Solid State Chem Lab LQES, BR-13081970 Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Inst Biol, Dept Genet Evolut & Bioagents, BR-13081970 Campinas, SP - Brazil

^[3] Univ Fed Ceara, Dept Phys, Fortaleza, Ceara - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Nanomedicine-Nanotechnology Biology and Medicine; v. 8, n. 6, p. 935-940, AUG 2012.
• Citações Web of Science: 68

Resumo

In this article, we report the use of nanostructured silver vanadate as a promising antibacterial additive to water-based paints that has potential for applications in bathrooms, kitchens, and hospital environments. This hybrid nanomaterial was prepared by a simple and fast precipitation reaction involving silver nitrate and ammonium vanadate, dismissing the hydrothermal treatment. The preparation involved using Ag vanadate nanowires (beta-AgVO3) with diameters ranging from 20 to 60 nm and decorated with silver (Ag) nanoparticles (NPs) with diameters ranging from 5 to 40 nm. Results of antibacterial tests show that this hybrid material has a promising antibacterial activity against several types of bacteria strains, such as methicillin-resistant Staphylococcus aureas (MRSA), Enterococcus faecalis, Escherichia coli, and Salmonella enterica Typhimurium. The evaluated material exhibits antibacterial activity 30 times larger than that of Oxacillin. In addition, this nanomaterial was tested as an antibacterial additive to water-based paints, and formulations with 1% show a 4-mm inhibition zone against a MRSA strain. From the Clinical Editor: In this study, silver nanoparticles are studied as additives to water based paints to provide antibacterial properties. With the rise of multi-resistant organisms, the methods outlined in this work may enable the establishment of improved sanitary conditions for health care workers and beyond. (C) 2012 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 08/57974-9 - Desenvolvimento de nanoestruturas baseadas em prata e vanadio como novos agentes antibacterianos
• Beneficiário: Raphael Dias Holtz
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 09/02446-0 - Análise dos Mecanismos da Atividade Antimicrobiana da Violaceína sobre Staphylococcus aureus.
• Beneficiário: Bruna de Araujo Lima
• Modalidade de apoio: Bolsas no Brasil - Doutorado