A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of titania coatings on glass foams
AbstractTiO2 coatings on glass foam substrates were produced by electrophoretic deposition (EPD) and sol–gel method with the aim to impart surface functional properties to glass foam such as antibacterial and photocatalytic effects. Starting with charged TiO2 nanoparticles (21nm) suspended in acetylacetone, EPD was shown to be a useful method to obtain TiO2 coating on the glass foam substrates placed close to the deposition electrodes in the EPD cell. Best results were obtained by applying 25V for 4min and a subsequent thermal treatment (450°C for 1h). In the second approach, multilayer sol–gel TiO2 coatings on glass foam were fabricated, which were heat-treated at 450°C for 1h to obtain pure anatase structure. Both techniques led to partially microcracked coatings which were however well adhered to the glass foam substrate (qualitatively assessed). The presence of microcracks was not considered to be a disadvantage as they increase the surface area of the coating, which is required to maximise the interaction of the titania layers with the environment for their antibacterial and photocatalytic function.
Development of titania coatings on glass foams
AbstractTiO2 coatings on glass foam substrates were produced by electrophoretic deposition (EPD) and sol–gel method with the aim to impart surface functional properties to glass foam such as antibacterial and photocatalytic effects. Starting with charged TiO2 nanoparticles (21nm) suspended in acetylacetone, EPD was shown to be a useful method to obtain TiO2 coating on the glass foam substrates placed close to the deposition electrodes in the EPD cell. Best results were obtained by applying 25V for 4min and a subsequent thermal treatment (450°C for 1h). In the second approach, multilayer sol–gel TiO2 coatings on glass foam were fabricated, which were heat-treated at 450°C for 1h to obtain pure anatase structure. Both techniques led to partially microcracked coatings which were however well adhered to the glass foam substrate (qualitatively assessed). The presence of microcracks was not considered to be a disadvantage as they increase the surface area of the coating, which is required to maximise the interaction of the titania layers with the environment for their antibacterial and photocatalytic function.
Development of titania coatings on glass foams
Boccaccini, A.R. (author) / Rossetti, M. (author) / Roether, J.A. (author) / Sharif Zein, Sharif Hussein (author) / Ferraris, M. (author)
Construction and Building Materials ; 23 ; 2554-2558
2009-02-08
5 pages
Article (Journal)
Electronic Resource
English
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