Producing Self-cleaning, Transparent and Hydrophobic SiO2-crystalline TiO2 Nanocomposites at Ambient Conditions for Stone Protection and Consolidation

C. Kapridaki, Luis Miguel Faria Soares Pinho Da Silva, M. J. Mosquera, Pagona Maravelaki-Kalaitzaki

Résultats de recherche: Contribution dans un livre/un catalogue/un rapport/dans les actes d'une conférenceChapitre

Résumé

Three innovative strengthening, protective and self-cleaning agents for marble and calcareous stones were synthesized by using a simple sol-gel route at ambient conditions. TiO2 nanoparticles and hydroxyl-terminated polydimethylsiloxane (PDMS) were incorporated in a tetraethoxysilane (TEOS) matrix in the presence of oxalic acid (Ox). Both the Ox concentration and the addition sequence of the reagent agents were assessed through the evaluation of the microstructure and of the physicochemical and self-cleaning properties of all the synthesized nanocomposites. The presence of Ox contributed to the production of both homogeneous materials and photoactive independent domains of anatase TiO2 crystals at ambient conditions. In addition, the role played by Ox as a hole-scavenger increased the photocatalytic activity of the nanocomposites. The synthesized crack-free, homogeneous, transparent and photoactive nanocomposites provide self-cleaning, water repellency and consolidation properties to building substrates, while respecting their aesthetic qualities.

langueAnglais
titreSelf-Cleaning Coatings: Structure, Fabrication and Application
EditeurRoyal Society of Chemistry
Pages105-141
Nombre de pages37
Volume2017-January
Edition21
Les DOIs
étatPublié - 2017

Série de publications

NomRSC Smart Materials
Numéro21
Volume2017-January
ISSN (imprimé)20460066
ISSN (Electronique)20460074

Empreinte digitale

Oxalic Acid
Nanocomposites
Oxalic acid
Consolidation
Cleaning
Crystalline materials
Marble
Calcium Carbonate
Polymethyl Methacrylate
Polydimethylsiloxane
Esthetics
Hydroxyl Radical
Nanoparticles
Titanium dioxide
Sol-gels
Gels
Cracks
Crystals
Microstructure
Water

Citer ceci

Kapridaki, C., Faria Soares Pinho Da Silva, L. M., Mosquera, M. J., & Maravelaki-Kalaitzaki, P. (2017). Producing Self-cleaning, Transparent and Hydrophobic SiO2-crystalline TiO2 Nanocomposites at Ambient Conditions for Stone Protection and Consolidation. Dans Self-Cleaning Coatings: Structure, Fabrication and Application (21 Ed., Vol 2017-January, p. 105-141). (RSC Smart Materials; Vol 2017-January, Numéro 21). Royal Society of Chemistry. DOI: 10.1039/9781782623991-00105
Kapridaki, C. ; Faria Soares Pinho Da Silva, Luis Miguel ; Mosquera, M. J. ; Maravelaki-Kalaitzaki, Pagona. / Producing Self-cleaning, Transparent and Hydrophobic SiO2-crystalline TiO2 Nanocomposites at Ambient Conditions for Stone Protection and Consolidation. Self-Cleaning Coatings: Structure, Fabrication and Application. Vol 2017-January 21. Ed. Royal Society of Chemistry, 2017. p. 105-141 (RSC Smart Materials; 21).
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abstract = "Three innovative strengthening, protective and self-cleaning agents for marble and calcareous stones were synthesized by using a simple sol-gel route at ambient conditions. TiO2 nanoparticles and hydroxyl-terminated polydimethylsiloxane (PDMS) were incorporated in a tetraethoxysilane (TEOS) matrix in the presence of oxalic acid (Ox). Both the Ox concentration and the addition sequence of the reagent agents were assessed through the evaluation of the microstructure and of the physicochemical and self-cleaning properties of all the synthesized nanocomposites. The presence of Ox contributed to the production of both homogeneous materials and photoactive independent domains of anatase TiO2 crystals at ambient conditions. In addition, the role played by Ox as a hole-scavenger increased the photocatalytic activity of the nanocomposites. The synthesized crack-free, homogeneous, transparent and photoactive nanocomposites provide self-cleaning, water repellency and consolidation properties to building substrates, while respecting their aesthetic qualities.",
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Kapridaki, C, Faria Soares Pinho Da Silva, LM, Mosquera, MJ & Maravelaki-Kalaitzaki, P 2017, Producing Self-cleaning, Transparent and Hydrophobic SiO2-crystalline TiO2 Nanocomposites at Ambient Conditions for Stone Protection and Consolidation. Dans Self-Cleaning Coatings: Structure, Fabrication and Application. 21 edn, VOL. 2017-January, RSC Smart Materials, Numéro 21, VOL. 2017-January, Royal Society of Chemistry, p. 105-141. DOI: 10.1039/9781782623991-00105

Producing Self-cleaning, Transparent and Hydrophobic SiO2-crystalline TiO2 Nanocomposites at Ambient Conditions for Stone Protection and Consolidation. / Kapridaki, C.; Faria Soares Pinho Da Silva, Luis Miguel; Mosquera, M. J.; Maravelaki-Kalaitzaki, Pagona.

Self-Cleaning Coatings: Structure, Fabrication and Application. Vol 2017-January 21. Ed. Royal Society of Chemistry, 2017. p. 105-141 (RSC Smart Materials; Vol 2017-January, Numéro 21).

Résultats de recherche: Contribution dans un livre/un catalogue/un rapport/dans les actes d'une conférenceChapitre

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AB - Three innovative strengthening, protective and self-cleaning agents for marble and calcareous stones were synthesized by using a simple sol-gel route at ambient conditions. TiO2 nanoparticles and hydroxyl-terminated polydimethylsiloxane (PDMS) were incorporated in a tetraethoxysilane (TEOS) matrix in the presence of oxalic acid (Ox). Both the Ox concentration and the addition sequence of the reagent agents were assessed through the evaluation of the microstructure and of the physicochemical and self-cleaning properties of all the synthesized nanocomposites. The presence of Ox contributed to the production of both homogeneous materials and photoactive independent domains of anatase TiO2 crystals at ambient conditions. In addition, the role played by Ox as a hole-scavenger increased the photocatalytic activity of the nanocomposites. The synthesized crack-free, homogeneous, transparent and photoactive nanocomposites provide self-cleaning, water repellency and consolidation properties to building substrates, while respecting their aesthetic qualities.

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Kapridaki C, Faria Soares Pinho Da Silva LM, Mosquera MJ, Maravelaki-Kalaitzaki P. Producing Self-cleaning, Transparent and Hydrophobic SiO2-crystalline TiO2 Nanocomposites at Ambient Conditions for Stone Protection and Consolidation. Dans Self-Cleaning Coatings: Structure, Fabrication and Application. 21 Ed. Vol 2017-January. Royal Society of Chemistry. 2017. p. 105-141. (RSC Smart Materials; 21). Disponible �, DOI: 10.1039/9781782623991-00105