Protection of marbles against corrosion and microbial corrosion with TiO<sub>2</sub>coatings

Poulios, Ioannis; Spathis, P.; Grigoriadou, A.; Delidou, K.; Tsoumparis, P.

doi:10.1080/10934529909376905

“…In terms of photochemical properties, TiO 2 is used in decomposition of water into hydrogen and oxygen [ 6 ] and served as a photocatalyst in solar cells [ 7 ]. Degradation of organic molecules is another active research topic, such as purification of waste water [ 8 ], disinfection in public [ 9 ], self-cleaning coating [ 10 ], corrosion-protection [ 11 ], and actively suppressed impact on tumor cells of rats illuminated by near-UV [ 12 - 14 ]. In addition, TiO 2 , as a semiconducting metal oxide, can be used as oxygen gas sensor to control the air/fuel mixture in car engines [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Structure and photoluminescence of the TiO2 films grown by atomic layer deposition using tetrakis-dimethylamino titanium and ozone

Jin

¹

,

Liu

²

,

Lei

³

et al. 2015

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TiO2 films were grown on silicon substrates by atomic layer deposition (ALD) using tetrakis-dimethylamino titanium and ozone. Amorphous TiO2 film was deposited at a low substrate temperature of 165°C, and anatase TiO2 film was grown at 250°C. The amorphous TiO2 film crystallizes to anatase TiO2 phase with annealing temperature ranged from 300°C to 1,100°C in N2 atmosphere, while the anatase TiO2 film transforms into rutile phase at a temperature of 1,000°C. Photoluminescence from anatase TiO2 films contains a red band at 600 nm and a green band at around 515 nm. The red band exhibits a strong correlation with defects of the under-coordinated Ti3+ ions, and the green band shows a close relationship with the oxygen vacancies on (101) oriented anatase crystal surface. A blue shift of the photoluminescence spectra reveals that the defects of under-coordinated Ti3+ ions transform to surface oxygen vacancies in the anatase TiO2 film annealing at temperature from 800°C to 900°C in N2 atmosphere.

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“…Over the last decades, titanium dioxide has been attracting great interest due to their relevance for a variety of applications. For example, TiO 2 has been investigated for use in photocatalytic process [1][2][3], in protective coatings [4] and gas sensing applications [5]. TiO2 is also interesting for photovoltaic applications [6].…”

Section: Introductionmentioning

confidence: 99%

Thulium and Ytterbium-Doped Titanium Oxide Thin Films Deposited by Ultrasonic Spray Pyrolysis

Forissier¹,

Roussel²,

Chaudouet³

et al. 2012

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International audienceThin films of thulium and ytterbium-doped titanium oxide were grown by metal-organic spray pyrolysis deposition from titanium(IV)oxide bis(acetylacetonate), thulium(III) tris(2,2,6,6-tetramethyl-3,5-heptanedionate) and ytterbium(III) tris(acetylacetonate). Deposition temperatures have been investigated from 300 to 600 A degrees C. Films have been studied regarding their crystallinity and doping quality. Structural and composition characterisations of TiO2:Tm,Yb were performed by electron microprobe, x-ray diffraction, and Fourier transform infrared spectroscopy. The deposition rate can reach 0.8 mu m/h. The anatase phase of TiO2 was obtained after synthesis at 400 A degrees C or higher. Organic contamination at low deposition temperature is eliminated by annealing treatments

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“…Degradation of organic molecules is another active research topic, such as purification of waste water [8], disinfection in public [9], self-cleaning coating [10], corrosion-protection [11], and actively suppressed impact on tumor cells of rats illuminated by near-UV [12][13][14]. In addition, TiO2, as a semiconducting metal oxide, can be used as oxygen gas sensor to control the air/fuel mixture in car engines [15,16].…”

Section: Introductionmentioning

confidence: 99%

Structure and photoluminescence of the TiO2 films grown by atomic layer deposition using tetrakis-dimethylamino titanium and ozone

Jin¹,

Liu²,

Lei³

et al. 2016

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TiO2 films were grown on silicon substrates by atomic layer deposition (ALD) using tetrakis-dimethylamino titanium and ozone. Amorphous TiO2 film was deposited at a low substrate temperature of 165°C, and anatase TiO2 film was grown at 250°C. The amorphous TiO2 film crystallizes to anatase TiO2 phase with annealing temperature ranged from 300°C to 1,100°C in N2 atmosphere, while the anatase TiO2 film transforms into rutile phase at a temperature of 1,000°C. Photoluminescence from anatase TiO2 films contains a red band at 600 nm and a green band at around 515 nm. The red band exhibits a strong correlation with defects of the under-coordinated Ti3+ ions, and the green band shows a close relationship with the oxygen vacancies on (101) oriented anatase crystal surface. A blue shift of the photoluminescence spectra reveals that the defects of under-coordinated Ti3+ ions transform to surface oxygen vacancies in the anatase TiO2 film annealing at temperature from 800°C to 900°C in N2 atmosphere.

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Protection of marbles against corrosion and microbial corrosion with TiO₂coatings

Cited by 40 publications

References 7 publications

Structure and photoluminescence of the TiO2 films grown by atomic layer deposition using tetrakis-dimethylamino titanium and ozone

Structure and photoluminescence of the TiO2 films grown by atomic layer deposition using tetrakis-dimethylamino titanium and ozone

Thulium and Ytterbium-Doped Titanium Oxide Thin Films Deposited by Ultrasonic Spray Pyrolysis

Structure and photoluminescence of the TiO2 films grown by atomic layer deposition using tetrakis-dimethylamino titanium and ozone

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Protection of marbles against corrosion and microbial corrosion with TiO2coatings

Cited by 40 publications

References 7 publications

Structure and photoluminescence of the TiO2 films grown by atomic layer deposition using tetrakis-dimethylamino titanium and ozone

Structure and photoluminescence of the TiO2 films grown by atomic layer deposition using tetrakis-dimethylamino titanium and ozone

Thulium and Ytterbium-Doped Titanium Oxide Thin Films Deposited by Ultrasonic Spray Pyrolysis

Structure and photoluminescence of the TiO2 films grown by atomic layer deposition using tetrakis-dimethylamino titanium and ozone

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Protection of marbles against corrosion and microbial corrosion with TiO₂coatings