The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
P Novak - One of the best experts on this subject based on the ideXlab platform.
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photocatalytic activity of sol gel tio2 thin films deposited on soda lime Glass and soda lime Glass precoated with a sio2 layer
Surface & Coatings Technology, 2010Co-Authors: P Novotna, J Krysa, J Maixner, Petr Kluson, P NovakAbstract:Abstract This paper reports the preparation and characterization of thin transparent TiO 2 films with special focus on the role of the support (soda lime Glass vs. soda lime Glass covered with a SiO 2 layer). The TiO 2 films and the SiO 2 layer were prepared by the sol–gel method and the final treatment was carried out at an elevated temperature of 500 °C for 2 h. The films were characterised with help of XRD, UV–VIS spectroscopy, TG/DTA thermal analysis, contact angle measurements, profilometry, SEM and AFM microscopy. Surprisingly the TiO 2 films deposited on soda lime Glass revealed only the brookite crystal phase structure. For the layers deposited onto the Glass pre-covered with the SiO 2 layer the anatase structure dominated. The role of sodium ions freely diffusing from the support was clearly identified by means of glow discharge atomic emission spectrometry. The photoinduced activity of the films was determined using two model compounds: anionic dye Acid Orange 7 (AO7) and 4-chlorophenol (4-CP). As expected the anatase films exhibited much better activity than the films with the brookite structure. On the other hand the brookite films possessed superhydrophilic properties, even in dark conditions.
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Photocatalytic activity of sol–gel TiO2 thin films deposited on soda lime Glass and soda lime Glass precoated with a SiO2 layer
Surface & Coatings Technology, 2010Co-Authors: P Novotna, J Krysa, J Maixner, Petr Kluson, P NovakAbstract:Abstract This paper reports the preparation and characterization of thin transparent TiO 2 films with special focus on the role of the support (soda lime Glass vs. soda lime Glass covered with a SiO 2 layer). The TiO 2 films and the SiO 2 layer were prepared by the sol–gel method and the final treatment was carried out at an elevated temperature of 500 °C for 2 h. The films were characterised with help of XRD, UV–VIS spectroscopy, TG/DTA thermal analysis, contact angle measurements, profilometry, SEM and AFM microscopy. Surprisingly the TiO 2 films deposited on soda lime Glass revealed only the brookite crystal phase structure. For the layers deposited onto the Glass pre-covered with the SiO 2 layer the anatase structure dominated. The role of sodium ions freely diffusing from the support was clearly identified by means of glow discharge atomic emission spectrometry. The photoinduced activity of the films was determined using two model compounds: anionic dye Acid Orange 7 (AO7) and 4-chlorophenol (4-CP). As expected the anatase films exhibited much better activity than the films with the brookite structure. On the other hand the brookite films possessed superhydrophilic properties, even in dark conditions.
P Novotna - One of the best experts on this subject based on the ideXlab platform.
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photocatalytic activity of sol gel tio2 thin films deposited on soda lime Glass and soda lime Glass precoated with a sio2 layer
Surface & Coatings Technology, 2010Co-Authors: P Novotna, J Krysa, J Maixner, Petr Kluson, P NovakAbstract:Abstract This paper reports the preparation and characterization of thin transparent TiO 2 films with special focus on the role of the support (soda lime Glass vs. soda lime Glass covered with a SiO 2 layer). The TiO 2 films and the SiO 2 layer were prepared by the sol–gel method and the final treatment was carried out at an elevated temperature of 500 °C for 2 h. The films were characterised with help of XRD, UV–VIS spectroscopy, TG/DTA thermal analysis, contact angle measurements, profilometry, SEM and AFM microscopy. Surprisingly the TiO 2 films deposited on soda lime Glass revealed only the brookite crystal phase structure. For the layers deposited onto the Glass pre-covered with the SiO 2 layer the anatase structure dominated. The role of sodium ions freely diffusing from the support was clearly identified by means of glow discharge atomic emission spectrometry. The photoinduced activity of the films was determined using two model compounds: anionic dye Acid Orange 7 (AO7) and 4-chlorophenol (4-CP). As expected the anatase films exhibited much better activity than the films with the brookite structure. On the other hand the brookite films possessed superhydrophilic properties, even in dark conditions.
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Photocatalytic activity of sol–gel TiO2 thin films deposited on soda lime Glass and soda lime Glass precoated with a SiO2 layer
Surface & Coatings Technology, 2010Co-Authors: P Novotna, J Krysa, J Maixner, Petr Kluson, P NovakAbstract:Abstract This paper reports the preparation and characterization of thin transparent TiO 2 films with special focus on the role of the support (soda lime Glass vs. soda lime Glass covered with a SiO 2 layer). The TiO 2 films and the SiO 2 layer were prepared by the sol–gel method and the final treatment was carried out at an elevated temperature of 500 °C for 2 h. The films were characterised with help of XRD, UV–VIS spectroscopy, TG/DTA thermal analysis, contact angle measurements, profilometry, SEM and AFM microscopy. Surprisingly the TiO 2 films deposited on soda lime Glass revealed only the brookite crystal phase structure. For the layers deposited onto the Glass pre-covered with the SiO 2 layer the anatase structure dominated. The role of sodium ions freely diffusing from the support was clearly identified by means of glow discharge atomic emission spectrometry. The photoinduced activity of the films was determined using two model compounds: anionic dye Acid Orange 7 (AO7) and 4-chlorophenol (4-CP). As expected the anatase films exhibited much better activity than the films with the brookite structure. On the other hand the brookite films possessed superhydrophilic properties, even in dark conditions.
J S Moya - One of the best experts on this subject based on the ideXlab platform.
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mechanical performance of a biocompatible biocide soda lime Glass ceramic
Journal of The Mechanical Behavior of Biomedical Materials, 2014Co-Authors: Sonia Lopezesteban, Ramón Torrecillas, Jose F Bartolome, L A Di, Leticia Estebantejeda, Catuxa Prado, R Lopezpiriz, J S MoyaAbstract:Abstract A biocompatible soda–lime Glass-ceramic in the SiO 2 –Na 2 O–Al 2 O 3 –CaO–B 2 O 3 system containing combeite and nepheline as crystalline phases, has been obtained at 750 °C by two different routes: (i) pressureless sintering and (ii) Spark Plasma Sintering. The SPS Glass-ceramic showed a bending strength, Weibull modulus, and toughness similar values to the cortical human bone. This material had a fatigue limit slightly superior to cortical bone and at least two times higher than commercial dental Glass-ceramics and dentine. The in vitro studies indicate that soda–lime Glass-ceramic is fully biocompatible. The in vivo studies in beagle jaws showed that implanted SPS rods presented no inflammatory changes in soft tissues surrounding implants in any of the 10 different cases after four months implantation. The radiological analysis indicates no signs of osseointegration lack around implants. Moreover, the biocide activity of SPS Glass-ceramic versus Escherichia coli , was found to be >4 log indicating that it prevents implant infections. Because of this, the SPS new Glass-ceramic is particularly promising for dental applications (inlay, crowns, etc).
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Mechanical performance of a biocompatible biocide Soda-Lime Glass-ceramic
Journal of the mechanical behavior of biomedical materials, 2014Co-Authors: Sonia López-esteban, Ramón Torrecillas, Jose F Bartolome, Catuxa Prado, Leticia Esteban-tejeda, R. López-piriz, J S MoyaAbstract:Abstract A biocompatible soda–lime Glass-ceramic in the SiO 2 –Na 2 O–Al 2 O 3 –CaO–B 2 O 3 system containing combeite and nepheline as crystalline phases, has been obtained at 750 °C by two different routes: (i) pressureless sintering and (ii) Spark Plasma Sintering. The SPS Glass-ceramic showed a bending strength, Weibull modulus, and toughness similar values to the cortical human bone. This material had a fatigue limit slightly superior to cortical bone and at least two times higher than commercial dental Glass-ceramics and dentine. The in vitro studies indicate that soda–lime Glass-ceramic is fully biocompatible. The in vivo studies in beagle jaws showed that implanted SPS rods presented no inflammatory changes in soft tissues surrounding implants in any of the 10 different cases after four months implantation. The radiological analysis indicates no signs of osseointegration lack around implants. Moreover, the biocide activity of SPS Glass-ceramic versus Escherichia coli , was found to be >4 log indicating that it prevents implant infections. Because of this, the SPS new Glass-ceramic is particularly promising for dental applications (inlay, crowns, etc).
J Krysa - One of the best experts on this subject based on the ideXlab platform.
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photocatalytic activity of sol gel tio2 thin films deposited on soda lime Glass and soda lime Glass precoated with a sio2 layer
Surface & Coatings Technology, 2010Co-Authors: P Novotna, J Krysa, J Maixner, Petr Kluson, P NovakAbstract:Abstract This paper reports the preparation and characterization of thin transparent TiO 2 films with special focus on the role of the support (soda lime Glass vs. soda lime Glass covered with a SiO 2 layer). The TiO 2 films and the SiO 2 layer were prepared by the sol–gel method and the final treatment was carried out at an elevated temperature of 500 °C for 2 h. The films were characterised with help of XRD, UV–VIS spectroscopy, TG/DTA thermal analysis, contact angle measurements, profilometry, SEM and AFM microscopy. Surprisingly the TiO 2 films deposited on soda lime Glass revealed only the brookite crystal phase structure. For the layers deposited onto the Glass pre-covered with the SiO 2 layer the anatase structure dominated. The role of sodium ions freely diffusing from the support was clearly identified by means of glow discharge atomic emission spectrometry. The photoinduced activity of the films was determined using two model compounds: anionic dye Acid Orange 7 (AO7) and 4-chlorophenol (4-CP). As expected the anatase films exhibited much better activity than the films with the brookite structure. On the other hand the brookite films possessed superhydrophilic properties, even in dark conditions.
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Photocatalytic activity of sol–gel TiO2 thin films deposited on soda lime Glass and soda lime Glass precoated with a SiO2 layer
Surface & Coatings Technology, 2010Co-Authors: P Novotna, J Krysa, J Maixner, Petr Kluson, P NovakAbstract:Abstract This paper reports the preparation and characterization of thin transparent TiO 2 films with special focus on the role of the support (soda lime Glass vs. soda lime Glass covered with a SiO 2 layer). The TiO 2 films and the SiO 2 layer were prepared by the sol–gel method and the final treatment was carried out at an elevated temperature of 500 °C for 2 h. The films were characterised with help of XRD, UV–VIS spectroscopy, TG/DTA thermal analysis, contact angle measurements, profilometry, SEM and AFM microscopy. Surprisingly the TiO 2 films deposited on soda lime Glass revealed only the brookite crystal phase structure. For the layers deposited onto the Glass pre-covered with the SiO 2 layer the anatase structure dominated. The role of sodium ions freely diffusing from the support was clearly identified by means of glow discharge atomic emission spectrometry. The photoinduced activity of the films was determined using two model compounds: anionic dye Acid Orange 7 (AO7) and 4-chlorophenol (4-CP). As expected the anatase films exhibited much better activity than the films with the brookite structure. On the other hand the brookite films possessed superhydrophilic properties, even in dark conditions.
J Maixner - One of the best experts on this subject based on the ideXlab platform.
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photocatalytic activity of sol gel tio2 thin films deposited on soda lime Glass and soda lime Glass precoated with a sio2 layer
Surface & Coatings Technology, 2010Co-Authors: P Novotna, J Krysa, J Maixner, Petr Kluson, P NovakAbstract:Abstract This paper reports the preparation and characterization of thin transparent TiO 2 films with special focus on the role of the support (soda lime Glass vs. soda lime Glass covered with a SiO 2 layer). The TiO 2 films and the SiO 2 layer were prepared by the sol–gel method and the final treatment was carried out at an elevated temperature of 500 °C for 2 h. The films were characterised with help of XRD, UV–VIS spectroscopy, TG/DTA thermal analysis, contact angle measurements, profilometry, SEM and AFM microscopy. Surprisingly the TiO 2 films deposited on soda lime Glass revealed only the brookite crystal phase structure. For the layers deposited onto the Glass pre-covered with the SiO 2 layer the anatase structure dominated. The role of sodium ions freely diffusing from the support was clearly identified by means of glow discharge atomic emission spectrometry. The photoinduced activity of the films was determined using two model compounds: anionic dye Acid Orange 7 (AO7) and 4-chlorophenol (4-CP). As expected the anatase films exhibited much better activity than the films with the brookite structure. On the other hand the brookite films possessed superhydrophilic properties, even in dark conditions.
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Photocatalytic activity of sol–gel TiO2 thin films deposited on soda lime Glass and soda lime Glass precoated with a SiO2 layer
Surface & Coatings Technology, 2010Co-Authors: P Novotna, J Krysa, J Maixner, Petr Kluson, P NovakAbstract:Abstract This paper reports the preparation and characterization of thin transparent TiO 2 films with special focus on the role of the support (soda lime Glass vs. soda lime Glass covered with a SiO 2 layer). The TiO 2 films and the SiO 2 layer were prepared by the sol–gel method and the final treatment was carried out at an elevated temperature of 500 °C for 2 h. The films were characterised with help of XRD, UV–VIS spectroscopy, TG/DTA thermal analysis, contact angle measurements, profilometry, SEM and AFM microscopy. Surprisingly the TiO 2 films deposited on soda lime Glass revealed only the brookite crystal phase structure. For the layers deposited onto the Glass pre-covered with the SiO 2 layer the anatase structure dominated. The role of sodium ions freely diffusing from the support was clearly identified by means of glow discharge atomic emission spectrometry. The photoinduced activity of the films was determined using two model compounds: anionic dye Acid Orange 7 (AO7) and 4-chlorophenol (4-CP). As expected the anatase films exhibited much better activity than the films with the brookite structure. On the other hand the brookite films possessed superhydrophilic properties, even in dark conditions.
