Silver/dioxide titanium nanocomposites as biocidal treatments on limestones
Biodegradation of stones is a common and undesirable alteration in historical buildings. Restorers have been using different treatments, especially chemical methods, to prevent biodeterioration. These treatments often have disadvantages such as low long-term effectiveness, high toxicity on human hea...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Grupo Español del IIC
2017-07-01
|
| Series: | Ge-conservación |
| Subjects: | |
| Online Access: | https://ge-iic.com/ojs/index.php/revista/article/view/465/763 |
| _version_ | 1819055323117256704 |
|---|---|
| author | Javier Becerra Luna Ana Paula Zaderenko Partida Pilar Ortiz Calderón |
| author_facet | Javier Becerra Luna Ana Paula Zaderenko Partida Pilar Ortiz Calderón |
| author_sort | Javier Becerra Luna |
| collection | DOAJ |
| description | Biodegradation of stones is a common and undesirable alteration in historical buildings. Restorers have been using different treatments, especially chemical methods, to prevent biodeterioration. These treatments often have disadvantages such as low long-term effectiveness, high toxicity on human health and the environment and/or physicochemical incompatibility with the original stone (chromatic alteration or chemical degradation).
In this research, different biocidal treatments based on silver and titanium dioxide nanocomposites have been tested on limestones from Utrera’s quarry (Seville, Spain), a stone employed in historical buildings in the south of Spain. Two AgNPs syntheses have been studied; the principal difference between them was the use of trisodium citrate as stabilizer.
Optimum nanocomposite composition and dosage to minimize chromatic alteration after application of treatments without cut down the biocide effectiveness have been set up. Treatments based on silver-titanium dioxide (Ag/TiO2) nanocomposites stabilized with citrate have been able to keep clean the limestone due to the biopatina formation reduction and the surface color change has been below 10%. |
| first_indexed | 2024-12-21T13:05:41Z |
| format | Article |
| id | doaj.art-2ed64936d57e42059af6cd0cc3b361e7 |
| institution | Directory Open Access Journal |
| issn | 1989-8568 |
| language | English |
| last_indexed | 2024-12-21T13:05:41Z |
| publishDate | 2017-07-01 |
| publisher | Grupo Español del IIC |
| record_format | Article |
| series | Ge-conservación |
| spelling | doaj.art-2ed64936d57e42059af6cd0cc3b361e72022-12-21T19:03:02ZengGrupo Español del IICGe-conservación1989-85682017-07-0111141148https://doi.org/10.37558/gec.v11i0.465Silver/dioxide titanium nanocomposites as biocidal treatments on limestonesJavier Becerra Luna0Ana Paula Zaderenko Partida1Pilar Ortiz Calderón2Departamento de Sistemas Físicos, Químicos y Naturales. Universidad Pablo de OlavideDepartamento de Sistemas Físicos, Químicos y Naturales. Universidad Pablo de OlavideDepartamento de Sistemas Físicos, Químicos y Naturales. Universidad Pablo de OlavideBiodegradation of stones is a common and undesirable alteration in historical buildings. Restorers have been using different treatments, especially chemical methods, to prevent biodeterioration. These treatments often have disadvantages such as low long-term effectiveness, high toxicity on human health and the environment and/or physicochemical incompatibility with the original stone (chromatic alteration or chemical degradation). In this research, different biocidal treatments based on silver and titanium dioxide nanocomposites have been tested on limestones from Utrera’s quarry (Seville, Spain), a stone employed in historical buildings in the south of Spain. Two AgNPs syntheses have been studied; the principal difference between them was the use of trisodium citrate as stabilizer. Optimum nanocomposite composition and dosage to minimize chromatic alteration after application of treatments without cut down the biocide effectiveness have been set up. Treatments based on silver-titanium dioxide (Ag/TiO2) nanocomposites stabilized with citrate have been able to keep clean the limestone due to the biopatina formation reduction and the surface color change has been below 10%.https://ge-iic.com/ojs/index.php/revista/article/view/465/763silver/titanium dioxide nanocompositebiocideconservationlimestone |
| spellingShingle | Javier Becerra Luna Ana Paula Zaderenko Partida Pilar Ortiz Calderón Silver/dioxide titanium nanocomposites as biocidal treatments on limestones Ge-conservación silver/titanium dioxide nanocomposite biocide conservation limestone |
| title | Silver/dioxide titanium nanocomposites as biocidal treatments on limestones |
| title_full | Silver/dioxide titanium nanocomposites as biocidal treatments on limestones |
| title_fullStr | Silver/dioxide titanium nanocomposites as biocidal treatments on limestones |
| title_full_unstemmed | Silver/dioxide titanium nanocomposites as biocidal treatments on limestones |
| title_short | Silver/dioxide titanium nanocomposites as biocidal treatments on limestones |
| title_sort | silver dioxide titanium nanocomposites as biocidal treatments on limestones |
| topic | silver/titanium dioxide nanocomposite biocide conservation limestone |
| url | https://ge-iic.com/ojs/index.php/revista/article/view/465/763 |
| work_keys_str_mv | AT javierbecerraluna silverdioxidetitaniumnanocompositesasbiocidaltreatmentsonlimestones AT anapaulazaderenkopartida silverdioxidetitaniumnanocompositesasbiocidaltreatmentsonlimestones AT pilarortizcalderon silverdioxidetitaniumnanocompositesasbiocidaltreatmentsonlimestones |