PREPARATION OF TITANIA SOL-GEL COATINGS CONTAINING SILVER IN VARIOUS FORMS AND MEASURING OF THEIR BACTERICIDAL EFFECTS AGAINST E. COLI
The work describes titania coatings containing various forms of silver applied on a titanium substrate by a dip-coating sol-gel technique. Silver was added into the basic titania sol in form of colloid particles of Ag, crystals of AgNO3, particles of AgI, particles of Ag3PO4 and Ag3PO4 developed in...
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2015-09-01
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| Series: | Ceramics-Silikáty |
| Subjects: | |
| Online Access: |
http://www.ceramics-silikaty.cz/2015/pdf/2015_03_238.pdf
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| _version_ | 1811253427571785728 |
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| author | Diana Horkavcova Zdenek Zmeskal Sanda Ludvik Zlamalova Cilova Zuzana Jablonska Eva Helebrant Ales |
| author_facet | Diana Horkavcova Zdenek Zmeskal Sanda Ludvik Zlamalova Cilova Zuzana Jablonska Eva Helebrant Ales |
| author_sort | Diana Horkavcova |
| collection | DOAJ |
| description | The work describes titania coatings containing various forms of silver applied on a titanium substrate by a dip-coating sol-gel technique. Silver was added into the basic titania sol in form of colloid particles of Ag, crystals of AgNO3, particles of AgI, particles of Ag3PO4 and Ag3PO4 developed in situ (in the sol) by reaction of AgNO3 with added calcium phosphate (brushite or monetite). Mechanically and chemically treated titanium substrates were dipped at a constant rate into individual types of sols. Subsequently, they were slowly fired. The fired coatings contained microcracks. All over the surface there were evenly distributed spherical nanoparticles of silver (Ag, AgNO3) or microcrystals of AgI and Ag3PO4. The prepared coatings were tested under static conditions for their bactericidal effects against gram-negative bacteria Escherichia coli (E. coli). The coated substrates were immersed into a suspension of E. coli in physiological solution for 24 and 4 hours. The basic titania coatings with no silver demonstrated no bactericidal properties. Very good bactericidal effect against E. coli in both types of bactericidal test showed the titania coatings with AgNO3, Ag3PO4 crystals and Ag3PO4 developed in situ. |
| first_indexed | 2024-04-12T16:50:43Z |
| format | Article |
| id | doaj.art-539008de73cf4c889de4b6834951b94f |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-04-12T16:50:43Z |
| publishDate | 2015-09-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-539008de73cf4c889de4b6834951b94f2022-12-22T03:24:24ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472015-09-01593238243.20160310150236PREPARATION OF TITANIA SOL-GEL COATINGS CONTAINING SILVER IN VARIOUS FORMS AND MEASURING OF THEIR BACTERICIDAL EFFECTS AGAINST E. COLIDiana Horkavcova0Zdenek Zmeskal1Sanda Ludvik2Zlamalova Cilova Zuzana3Jablonska EvaHelebrant Ales4 Department of Glass and Ceramics, Faculty of Chemical Technology,University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague, Czech Republic Department of Glass and Ceramics, Faculty of Chemical Technology,University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague, Czech Republic Department of Glass and Ceramics, Faculty of Chemical Technology,University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague, Czech Republic Department of Glass and Ceramics, Faculty of Chemical Technology,University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague, Czech Republic Department of Glass and Ceramics, Faculty of Chemical Technology,University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague, Czech Republic The work describes titania coatings containing various forms of silver applied on a titanium substrate by a dip-coating sol-gel technique. Silver was added into the basic titania sol in form of colloid particles of Ag, crystals of AgNO3, particles of AgI, particles of Ag3PO4 and Ag3PO4 developed in situ (in the sol) by reaction of AgNO3 with added calcium phosphate (brushite or monetite). Mechanically and chemically treated titanium substrates were dipped at a constant rate into individual types of sols. Subsequently, they were slowly fired. The fired coatings contained microcracks. All over the surface there were evenly distributed spherical nanoparticles of silver (Ag, AgNO3) or microcrystals of AgI and Ag3PO4. The prepared coatings were tested under static conditions for their bactericidal effects against gram-negative bacteria Escherichia coli (E. coli). The coated substrates were immersed into a suspension of E. coli in physiological solution for 24 and 4 hours. The basic titania coatings with no silver demonstrated no bactericidal properties. Very good bactericidal effect against E. coli in both types of bactericidal test showed the titania coatings with AgNO3, Ag3PO4 crystals and Ag3PO4 developed in situ. http://www.ceramics-silikaty.cz/2015/pdf/2015_03_238.pdf Titanium substrate Titania sol-gel coatings Silver Dip-coating technique E. coli |
| spellingShingle | Diana Horkavcova Zdenek Zmeskal Sanda Ludvik Zlamalova Cilova Zuzana Jablonska Eva Helebrant Ales PREPARATION OF TITANIA SOL-GEL COATINGS CONTAINING SILVER IN VARIOUS FORMS AND MEASURING OF THEIR BACTERICIDAL EFFECTS AGAINST E. COLI Ceramics-Silikáty Titanium substrate Titania sol-gel coatings Silver Dip-coating technique E. coli |
| title | PREPARATION OF TITANIA SOL-GEL COATINGS CONTAINING SILVER IN VARIOUS FORMS AND MEASURING OF THEIR BACTERICIDAL EFFECTS AGAINST E. COLI |
| title_full | PREPARATION OF TITANIA SOL-GEL COATINGS CONTAINING SILVER IN VARIOUS FORMS AND MEASURING OF THEIR BACTERICIDAL EFFECTS AGAINST E. COLI |
| title_fullStr | PREPARATION OF TITANIA SOL-GEL COATINGS CONTAINING SILVER IN VARIOUS FORMS AND MEASURING OF THEIR BACTERICIDAL EFFECTS AGAINST E. COLI |
| title_full_unstemmed | PREPARATION OF TITANIA SOL-GEL COATINGS CONTAINING SILVER IN VARIOUS FORMS AND MEASURING OF THEIR BACTERICIDAL EFFECTS AGAINST E. COLI |
| title_short | PREPARATION OF TITANIA SOL-GEL COATINGS CONTAINING SILVER IN VARIOUS FORMS AND MEASURING OF THEIR BACTERICIDAL EFFECTS AGAINST E. COLI |
| title_sort | preparation of titania sol gel coatings containing silver in various forms and measuring of their bactericidal effects against e coli |
| topic | Titanium substrate Titania sol-gel coatings Silver Dip-coating technique E. coli |
| url |
http://www.ceramics-silikaty.cz/2015/pdf/2015_03_238.pdf
|
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