Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticles
- Autores
- Gonçalves, Lidiane Patricia; Miñán, Alejandro Guillermo; Benitez, Guillermo Alfredo; Fernández Lorenzo de Mele, Mónica Alicia; Vela, María Elena; Schilardi, Patricia Laura; Ferreira Neto, Elias Paiva; Noveletto, Júlia Cristina; Correr, Wagner Rafael; Pereira Rodrigues-Filho, Ubirajara
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Medical device-related infections represent a major healthcare complication, resulting in potential risks for the patient. Antimicrobial materials comprise an attractive strategy against bacterial colonization and biofilm proliferation. However, in most cases these materials are only bacteriostatic or bactericidal, and consequently they must be used in combination with other antimicrobials in order to reach the eradication condition (no viable microorganisms). In this study, a straightforward and robust antibacterial coating based on Phosphotungstate Ormosil doped with core-shell (SiO₂@TiO₂) was developed using sol-gel process, chemical tempering, and Ag nanoparticle photoassisted synthesis (POrs-CS-Ag). The coating was characterized by X-ray Fluorescence Spectroscopy (XRF), Field Emission Scanning Electron Microscopy (FE-SEM), Atomic Force Microscopy (AFM) and X-ray Photoelectron Microscopy (XPS). The silver free coating displays low antibacterial activity against "Staphylococcus aureus" and "Pseudomonas aeruginosa", in opposition to the silver loaded ones, which are able to completely eradicate these strains. Moreover, the antimicrobial activity of these substrates remains high until three reutilization cycles, which make them a promising strategy to develop self-sterilizing materials, such as POrs-CS-Ag-impregnated fabric, POrs-CS-Ag coated indwelling metals and polymers, among other materials.
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas - Materia
-
Ciencias Exactas
Química
antibacterial activity
Pseudomonas aeruginosa
Staphylococcus aureus
ormosil
Ag nanoparticles - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/163488
Ver los metadatos del registro completo
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Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticlesGonçalves, Lidiane PatriciaMiñán, Alejandro GuillermoBenitez, Guillermo AlfredoFernández Lorenzo de Mele, Mónica AliciaVela, María ElenaSchilardi, Patricia LauraFerreira Neto, Elias PaivaNoveletto, Júlia CristinaCorrer, Wagner RafaelPereira Rodrigues-Filho, UbirajaraCiencias ExactasQuímicaantibacterial activityPseudomonas aeruginosaStaphylococcus aureusormosilAg nanoparticlesMedical device-related infections represent a major healthcare complication, resulting in potential risks for the patient. Antimicrobial materials comprise an attractive strategy against bacterial colonization and biofilm proliferation. However, in most cases these materials are only bacteriostatic or bactericidal, and consequently they must be used in combination with other antimicrobials in order to reach the eradication condition (no viable microorganisms). In this study, a straightforward and robust antibacterial coating based on Phosphotungstate Ormosil doped with core-shell (SiO₂@TiO₂) was developed using sol-gel process, chemical tempering, and Ag nanoparticle photoassisted synthesis (POrs-CS-Ag). The coating was characterized by X-ray Fluorescence Spectroscopy (XRF), Field Emission Scanning Electron Microscopy (FE-SEM), Atomic Force Microscopy (AFM) and X-ray Photoelectron Microscopy (XPS). The silver free coating displays low antibacterial activity against "Staphylococcus aureus" and "Pseudomonas aeruginosa", in opposition to the silver loaded ones, which are able to completely eradicate these strains. Moreover, the antimicrobial activity of these substrates remains high until three reutilization cycles, which make them a promising strategy to develop self-sterilizing materials, such as POrs-CS-Ag-impregnated fabric, POrs-CS-Ag coated indwelling metals and polymers, among other materials.Facultad de Ciencias ExactasInstituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf144-154http://sedici.unlp.edu.ar/handle/10915/163488enginfo:eu-repo/semantics/altIdentifier/issn/0927-7765info:eu-repo/semantics/altIdentifier/doi/10.1016/j.colsurfb.2017.12.016info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:43:01Zoai:sedici.unlp.edu.ar:10915/163488Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:43:01.335SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticles |
| title |
Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticles |
| spellingShingle |
Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticles Gonçalves, Lidiane Patricia Ciencias Exactas Química antibacterial activity Pseudomonas aeruginosa Staphylococcus aureus ormosil Ag nanoparticles |
| title_short |
Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticles |
| title_full |
Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticles |
| title_fullStr |
Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticles |
| title_full_unstemmed |
Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticles |
| title_sort |
Self-sterilizing ormosils surfaces based on photo-synzthesized silver nanoparticles |
| dc.creator.none.fl_str_mv |
Gonçalves, Lidiane Patricia Miñán, Alejandro Guillermo Benitez, Guillermo Alfredo Fernández Lorenzo de Mele, Mónica Alicia Vela, María Elena Schilardi, Patricia Laura Ferreira Neto, Elias Paiva Noveletto, Júlia Cristina Correr, Wagner Rafael Pereira Rodrigues-Filho, Ubirajara |
| author |
Gonçalves, Lidiane Patricia |
| author_facet |
Gonçalves, Lidiane Patricia Miñán, Alejandro Guillermo Benitez, Guillermo Alfredo Fernández Lorenzo de Mele, Mónica Alicia Vela, María Elena Schilardi, Patricia Laura Ferreira Neto, Elias Paiva Noveletto, Júlia Cristina Correr, Wagner Rafael Pereira Rodrigues-Filho, Ubirajara |
| author_role |
author |
| author2 |
Miñán, Alejandro Guillermo Benitez, Guillermo Alfredo Fernández Lorenzo de Mele, Mónica Alicia Vela, María Elena Schilardi, Patricia Laura Ferreira Neto, Elias Paiva Noveletto, Júlia Cristina Correr, Wagner Rafael Pereira Rodrigues-Filho, Ubirajara |
| author2_role |
author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Química antibacterial activity Pseudomonas aeruginosa Staphylococcus aureus ormosil Ag nanoparticles |
| topic |
Ciencias Exactas Química antibacterial activity Pseudomonas aeruginosa Staphylococcus aureus ormosil Ag nanoparticles |
| dc.description.none.fl_txt_mv |
Medical device-related infections represent a major healthcare complication, resulting in potential risks for the patient. Antimicrobial materials comprise an attractive strategy against bacterial colonization and biofilm proliferation. However, in most cases these materials are only bacteriostatic or bactericidal, and consequently they must be used in combination with other antimicrobials in order to reach the eradication condition (no viable microorganisms). In this study, a straightforward and robust antibacterial coating based on Phosphotungstate Ormosil doped with core-shell (SiO₂@TiO₂) was developed using sol-gel process, chemical tempering, and Ag nanoparticle photoassisted synthesis (POrs-CS-Ag). The coating was characterized by X-ray Fluorescence Spectroscopy (XRF), Field Emission Scanning Electron Microscopy (FE-SEM), Atomic Force Microscopy (AFM) and X-ray Photoelectron Microscopy (XPS). The silver free coating displays low antibacterial activity against "Staphylococcus aureus" and "Pseudomonas aeruginosa", in opposition to the silver loaded ones, which are able to completely eradicate these strains. Moreover, the antimicrobial activity of these substrates remains high until three reutilization cycles, which make them a promising strategy to develop self-sterilizing materials, such as POrs-CS-Ag-impregnated fabric, POrs-CS-Ag coated indwelling metals and polymers, among other materials. Facultad de Ciencias Exactas Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas |
| description |
Medical device-related infections represent a major healthcare complication, resulting in potential risks for the patient. Antimicrobial materials comprise an attractive strategy against bacterial colonization and biofilm proliferation. However, in most cases these materials are only bacteriostatic or bactericidal, and consequently they must be used in combination with other antimicrobials in order to reach the eradication condition (no viable microorganisms). In this study, a straightforward and robust antibacterial coating based on Phosphotungstate Ormosil doped with core-shell (SiO₂@TiO₂) was developed using sol-gel process, chemical tempering, and Ag nanoparticle photoassisted synthesis (POrs-CS-Ag). The coating was characterized by X-ray Fluorescence Spectroscopy (XRF), Field Emission Scanning Electron Microscopy (FE-SEM), Atomic Force Microscopy (AFM) and X-ray Photoelectron Microscopy (XPS). The silver free coating displays low antibacterial activity against "Staphylococcus aureus" and "Pseudomonas aeruginosa", in opposition to the silver loaded ones, which are able to completely eradicate these strains. Moreover, the antimicrobial activity of these substrates remains high until three reutilization cycles, which make them a promising strategy to develop self-sterilizing materials, such as POrs-CS-Ag-impregnated fabric, POrs-CS-Ag coated indwelling metals and polymers, among other materials. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 |
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eng |
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eng |
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