Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings

Bibliographic Details
Main Author: Carvalho, P.
Publication Date: 2014
Other Authors: Sampaio, Paula, Azevedo, Sofia, Vaz, Catarina Oliveira, Espinós, J. P., Teixeira, Vasco M. P., Carneiro, Joaquim A. O.
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: https://hdl.handle.net/1822/30249
Summary: "Author's copy"
id RCAP_aefefd1646ea2e9d6f9c4f8a9a457b99
oai_identifier_str oai:repositorium.sdum.uminho.pt:1822/30249
network_acronym_str RCAP
network_name_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository_id_str https://opendoar.ac.uk/repository/7160
spelling Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatingsZnO thin filmsMagnetron sputteringAntimicrobial activityFood packagingScience & Technology"Author's copy"In this research work, the production of undoped and silver (Ag) doped zinc oxide (ZnO) thin films for food-packaging applications were developed. The main goal was to determine the influence of coatings morphology and thickness on the antimicrobial performance of the produced samples. The ZnO based thin films were deposited on PET (Polyethylene terephthalate) substrates by means of DC reactive magnetron sputtering. The thin films were characterized by optical spectroscopy, X-Ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Scanning Electron Microscopy (SEM). The antimicrobial performance of the undoped and Ag-doped ZnO thin films was also evaluated. The results attained have shown that all the deposited zinc oxide and Ag-doped ZnO coatings present columnar morphology with V-shaped columns. The increase of ZnO coatings thickness until 200 nm increases the active surface area of the columns. The thinner samples (50 and 100 nm) present a less pronounced antibacterial activity than the thickest ones (200–600 nm). Regarding Ag-doped ZnO thin films, it was verified that increasing the silver content decreases the growth rate of Escherichia coli and decreases the amount of bacteria cells present at the end of the experiment.The work described in this paper was supported by project NANOPACKSAFER: NANO-engineered PACKaging systems for improving quality, SAFEty and health characteristics of foods, Portugal-Spain International Nanotechnology Laboratory Nanotechnology Projects Call; and also by the FEDER funding through the COMPETE program and FCT PEst-C/BIA/UI4050/2011 project.ElsevierUniversidade do MinhoCarvalho, P.Sampaio, PaulaAzevedo, SofiaVaz, Catarina OliveiraEspinós, J. P.Teixeira, Vasco M. P.Carneiro, Joaquim A. O.20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/30249eng0169-433210.1016/j.apsusc.2014.04.072www.elsevier.com/locate/apsuscinfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-04-12T03:51:36Zoai:repositorium.sdum.uminho.pt:1822/30249Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T14:41:48.327737Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings
title Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings
spellingShingle Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings
Carvalho, P.
ZnO thin films
Magnetron sputtering
Antimicrobial activity
Food packaging
Science & Technology
title_short Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings
title_full Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings
title_fullStr Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings
title_full_unstemmed Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings
title_sort Influence of thickness and coatings morphology in the antimicrobial performance of zinc oxide coatings
author Carvalho, P.
author_facet Carvalho, P.
Sampaio, Paula
Azevedo, Sofia
Vaz, Catarina Oliveira
Espinós, J. P.
Teixeira, Vasco M. P.
Carneiro, Joaquim A. O.
author_role author
author2 Sampaio, Paula
Azevedo, Sofia
Vaz, Catarina Oliveira
Espinós, J. P.
Teixeira, Vasco M. P.
Carneiro, Joaquim A. O.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Carvalho, P.
Sampaio, Paula
Azevedo, Sofia
Vaz, Catarina Oliveira
Espinós, J. P.
Teixeira, Vasco M. P.
Carneiro, Joaquim A. O.
dc.subject.por.fl_str_mv ZnO thin films
Magnetron sputtering
Antimicrobial activity
Food packaging
Science & Technology
topic ZnO thin films
Magnetron sputtering
Antimicrobial activity
Food packaging
Science & Technology
description "Author's copy"
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/1822/30249
url https://hdl.handle.net/1822/30249
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0169-4332
10.1016/j.apsusc.2014.04.072
www.elsevier.com/locate/apsusc
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833594825432104960

Similar Items