Silver Nanoparticles–Polyethyleneimine-Based Coatings with Antiviral Activity against SARS-CoV-2: A New Method to Functionalize Filtration Media
The use of face masks and air purification systems has been key to curbing the transmission of SARS-CoV-2 aerosols in the context of the current COVID-19 pandemic. However, some masks or air conditioning filtration systems are designed to remove large airborne particles or bacteria from the air, bei...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/14/4742 |
| _version_ | 1797433382616956928 |
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| author | Marta Baselga Iratxe Uranga-Murillo Diego de Miguel Maykel Arias Victor Sebastián Julián Pardo Manuel Arruebo |
| author_facet | Marta Baselga Iratxe Uranga-Murillo Diego de Miguel Maykel Arias Victor Sebastián Julián Pardo Manuel Arruebo |
| author_sort | Marta Baselga |
| collection | DOAJ |
| description | The use of face masks and air purification systems has been key to curbing the transmission of SARS-CoV-2 aerosols in the context of the current COVID-19 pandemic. However, some masks or air conditioning filtration systems are designed to remove large airborne particles or bacteria from the air, being limited their effectiveness against SARS-CoV-2. Continuous research has been aimed at improving the performance of filter materials through nanotechnology. This article presents a new low-cost method based on electrostatic forces and coordination complex formation to generate antiviral coatings on filter materials using silver nanoparticles and polyethyleneimine. Initially, the AgNPs synthesis procedure was optimized until reaching a particle size of 6.2 ± 2.6 nm, promoting a fast ionic silver release due to its reduced size, obtaining a stable colloid over time and having reduced size polydispersity. The stability of the binding of the AgNPs to the fibers was corroborated using polypropylene, polyester-viscose, and polypropylene-glass spunbond mats as substrates, obtaining very low amounts of detached AgNPs in all cases. Under simulated operational conditions, a material loss less than 1% of nanostructured silver was measured. SEM micrographs demonstrated high silver distribution homogeneity on the polymer fibers. The antiviral coatings were tested against SARS-CoV-2, obtaining inactivation yields greater than 99.9%. We believe our results will be beneficial in the fight against the current COVID-19 pandemic and in controlling other infectious airborne pathogens. |
| first_indexed | 2024-03-09T10:16:14Z |
| format | Article |
| id | doaj.art-400d45d05e6f469cb59ad0f496888857 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T10:16:14Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-400d45d05e6f469cb59ad0f4968888572023-12-01T22:22:28ZengMDPI AGMaterials1996-19442022-07-011514474210.3390/ma15144742Silver Nanoparticles–Polyethyleneimine-Based Coatings with Antiviral Activity against SARS-CoV-2: A New Method to Functionalize Filtration MediaMarta Baselga0Iratxe Uranga-Murillo1Diego de Miguel2Maykel Arias3Victor Sebastián4Julián Pardo5Manuel Arruebo6Institute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, SpainInstitute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, SpainInstitute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, SpainInstitute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, SpainInstitute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, SpainInstitute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, SpainInstitute for Health Research Aragon (IIS Aragón), 50009 Zaragoza, SpainThe use of face masks and air purification systems has been key to curbing the transmission of SARS-CoV-2 aerosols in the context of the current COVID-19 pandemic. However, some masks or air conditioning filtration systems are designed to remove large airborne particles or bacteria from the air, being limited their effectiveness against SARS-CoV-2. Continuous research has been aimed at improving the performance of filter materials through nanotechnology. This article presents a new low-cost method based on electrostatic forces and coordination complex formation to generate antiviral coatings on filter materials using silver nanoparticles and polyethyleneimine. Initially, the AgNPs synthesis procedure was optimized until reaching a particle size of 6.2 ± 2.6 nm, promoting a fast ionic silver release due to its reduced size, obtaining a stable colloid over time and having reduced size polydispersity. The stability of the binding of the AgNPs to the fibers was corroborated using polypropylene, polyester-viscose, and polypropylene-glass spunbond mats as substrates, obtaining very low amounts of detached AgNPs in all cases. Under simulated operational conditions, a material loss less than 1% of nanostructured silver was measured. SEM micrographs demonstrated high silver distribution homogeneity on the polymer fibers. The antiviral coatings were tested against SARS-CoV-2, obtaining inactivation yields greater than 99.9%. We believe our results will be beneficial in the fight against the current COVID-19 pandemic and in controlling other infectious airborne pathogens.https://www.mdpi.com/1996-1944/15/14/4742silver nanoparticlespolyethyleneimineSARS-CoV-2antiviral coatingfacemaskfilter |
| spellingShingle | Marta Baselga Iratxe Uranga-Murillo Diego de Miguel Maykel Arias Victor Sebastián Julián Pardo Manuel Arruebo Silver Nanoparticles–Polyethyleneimine-Based Coatings with Antiviral Activity against SARS-CoV-2: A New Method to Functionalize Filtration Media Materials silver nanoparticles polyethyleneimine SARS-CoV-2 antiviral coating facemask filter |
| title | Silver Nanoparticles–Polyethyleneimine-Based Coatings with Antiviral Activity against SARS-CoV-2: A New Method to Functionalize Filtration Media |
| title_full | Silver Nanoparticles–Polyethyleneimine-Based Coatings with Antiviral Activity against SARS-CoV-2: A New Method to Functionalize Filtration Media |
| title_fullStr | Silver Nanoparticles–Polyethyleneimine-Based Coatings with Antiviral Activity against SARS-CoV-2: A New Method to Functionalize Filtration Media |
| title_full_unstemmed | Silver Nanoparticles–Polyethyleneimine-Based Coatings with Antiviral Activity against SARS-CoV-2: A New Method to Functionalize Filtration Media |
| title_short | Silver Nanoparticles–Polyethyleneimine-Based Coatings with Antiviral Activity against SARS-CoV-2: A New Method to Functionalize Filtration Media |
| title_sort | silver nanoparticles polyethyleneimine based coatings with antiviral activity against sars cov 2 a new method to functionalize filtration media |
| topic | silver nanoparticles polyethyleneimine SARS-CoV-2 antiviral coating facemask filter |
| url | https://www.mdpi.com/1996-1944/15/14/4742 |
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