Crystallization behavior of Li+-doped SiO2–TiO2 films prepared by sol–gel dip coating

Zhou, Feng; Liang, Kun; Wang, Guoliang; Shao, Hua; Hu, Anmin

doi:10.1016/j.jcrysgro.2003.12.060

Cited by 15 publications

(5 citation statements)

References 15 publications

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“…In a typical preparation procedure, Titanium (IV) Isoproxide (TTIP, 99.95%, Fluka Sigma-Aldrich) was added drop-wise under 60 min vigorous stirring into a mixture solution containing ethanol (99.9%; Merck Germany), 10 ml glacial acetic acid, boric acid (H 3 BO 3 ) [1][2][3] ,ammonium carbonate NH 4 HCO 3 [4] and nickel nitrate Ni(NO 3 ).6H 2 O [3] corresponding to different Ni/Ti proportioning of 4 mol% while B and N dosages were fixed at 5 and 20 mol% respectively at room temperature. After that the Ni/B/N/TiO 2 sol was coated on glass formers (5x20x0.3 cm 3 ) by dipping at room temperature.…”

Section: Preparation Of Ni /B/n/tio 2 Thin Film Coating On Formersmentioning

confidence: 99%

“…Hydrophilic properties of latex droplet on coated former in terms of contact angle were investigated under visible light using a contact angle meter (OCA 15EC). Surface morphology of the NR rubber films obtained from the TiO 2 coated glass formers were investigated by atomic force microscopy (AFM) NT-MDT Model NSG01 with a scan area of 50x50 μm 2 . Material Research and Applications…”

Section: Hydrophilicity Morphology and Roughness Of Nr Rubber Latexmentioning

confidence: 99%

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Influence of Ni/B/N/TiO2 Nanocomposite Film on Hydrophilic Property of Rubber Dipping Former Surface

Masae

Sikong

Kooptarnond

et al. 2014

AMR

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The objective of this study is to explore a method to improve hydrophilicity of the surface of formers that could be more easily dipped to produce high quality dipped rubber products. Photocatalytic TiO2 composite films were prepared by sol-gel method. Glass formers were coated with the Ni/B/N/TiO2 nanocomposite film by dipping method and annealed at 400°C for 1 h. Phase formation of TiO2 was characterized by XRD. Morphology of the TiO2 films was observed by using atomic force microscopy (AFM). Optical absorption of the films and degradation concentration of methylene blue had been measured employing UV-Vis spectrophotometer. The hydrophilicity of the thin films was determined in terms of the contact angles of water and NR rubber latex droplets on the coated TiO2 composite films under visible light irradiation. It was found from the experimentally study that the Ni/B/N/TiO2 nanocomposite film can improve wet-ability of the coated former surfaces.

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Section: Preparation Of Ni /B/n/tio 2 Thin Film Coating On Formersmentioning

confidence: 99%

Section: Hydrophilicity Morphology and Roughness Of Nr Rubber Latexmentioning

confidence: 99%

Influence of Ni/B/N/TiO2 Nanocomposite Film on Hydrophilic Property of Rubber Dipping Former Surface

Masae

Sikong

Kooptarnond

et al. 2014

AMR

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show abstract

“…In a typical preparation procedure, titanium (IV) isoproxide (TTIP, 99.95%, Fluka Sigma-Aldrich) was added drop-wise under vigorous stirring into the mixture solution containing ethanol (99.9%; Merck Germany), 10 ml glacial acetic acid, boric acid (H 3 BO 3 ) [6,7,10] and nickel nitrate Ni(NO 3 ).6H 2 O [10] corresponding to different Ni/Ti proportioning of 1, 2, 3, 4, 6 and 8 %mol while B dosage was fixed at 5 mol%, and stirred for 60 min at a room temperature, after that Ni /B/TiO 2 sol was coated on glass substrates (5x20x0.3 cm 3 ) by dipping at room temperature. Before coating, the glass substrates were cleaned with ultrasonic for 15 min, then washed with distilled water and dried at 60°C for 15 min.…”

Section: Preparation Of Ni /B/tio 2 Thin Filmsmentioning

confidence: 99%

“…Some studies showed that the conspicuous photo-response in the visible region was obtained when boron and nickel were co-doped into TiO 2 , which could be ascribed to the narrower band gap of boron and nickel co-doped TiO 2 [5,6]. Studies of crystallization behavior showed that boron and nickel addition facilitated the anatase phase transformation [7,8]. The photocatalytic activity was already investigated in detail [9].…”

Section: Introductionmentioning

confidence: 99%

Photoactivity and Hydrophilicity of B and Ni Co-Doped TiO2 Films

Masae

Sikong

Kooptarnond

et al. 2010

AMR

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The effect of Ni doping in Ni and B co-doped TiO2 composite films on photocatalytic reaction and hydrophilic property were investigated. The TiO2 composite films were prepared by sol-gel and coated on glass substrates by dipping methods. These composite thin films were calcined at the temperatures of 400°C for 1 h. Phase formation of TiO2 was characterized by XRD. Morphology of TiO2 composite films were observed by using atomic force microscopy (AFM). The chemical composition and purity of the prepared films were analyzed by EDS, FTIR and FT-Raman spectrometers. The photoactivity of synthesized films was performed by means of degradation of methylene blue dye solution under UV and visible light irradiation. The hydrophilic property was measured in terms of a contact angle of water droplet on the films with and without the activation of UV irradiation. It was found that Ni doping seems to affect on TiO2 phase, crystallinity of the anatase phase, crystallite size of the composite films and band gap energy of the catalysts, resulting in their photocatalytic reaction and hydrophilic property. The crystallinity of anatase increased with an increase in Ni content varied from 0-3 mol% but decreased with an increase in Ni content above 3 mol%. It was found that 3 mol% Ni/B/TiO2 film, having highest crystallinity and smallest crystallite size shows the highest of photocatalytic reaction while 2 mol% Ni/B/TiO2 film provides the most hydrophilic effect. Only anatase phase was found at the calcination temperature of 400°C. The smooth film surfaces exhibits a high hydrophilic property. Super-hydrophilicity (contact angle equal to zero) of all B and Ni co-doped TiO2 films was found at UV irradiation for 25 minutes.

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“…In recent years, the photocatalytic degradation of organic compounds has attracted worldwide attention due to its potential applications to purify wastewater. Up to now, TiO 2 semiconductor has been extensively investigated as one of the most active semiconductor photocatalysts because of its strong oxidizing power, long-term thermodynamic stability, and relative nontoxicity [1][2][3][4][5][6][7]. However, the photoexcited electrons and holes in TiO 2 may experience a rapid recombination, which diminishes the quantum efficiency of the photocatalysis significantly.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Enhancement in Methylene Blue Degradation of TiO2 Photocatalysts via Graphene Hybridization

Zhou

Wan

2012

KEM

Self Cite

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A facile route was demonstrated to obtain an efficient graphene-hybridized TiO2 photocatalyst. The photodegradation results of Methylene Blue over graphene hybridized with TiO2 showed that the photocatalytic activity could be significantly enhanced under UV light irradiation. The structure between TiO2 and graphene as well as its effect on the photocatalytic activity were systematically investigated. The mechanism of the enhanced photocatalytic activity is based to the high migration efficiency and the inhibition of recombination of photoinduced electron-hole pairs. The graphene hydridization is proven to be a promising approach to develop highly efficient and stable photocatalysts under UV light irradiation.

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Crystallization behavior of Li+-doped SiO2–TiO2 films prepared by sol–gel dip coating

Cited by 15 publications

References 15 publications

Influence of Ni/B/N/TiO<sub>2</sub> Nanocomposite Film on Hydrophilic Property of Rubber Dipping Former Surface

Influence of Ni/B/N/TiO<sub>2</sub> Nanocomposite Film on Hydrophilic Property of Rubber Dipping Former Surface

Photoactivity and Hydrophilicity of B and Ni Co-Doped TiO<sub>2</sub> Films

Photocatalytic Enhancement in Methylene Blue Degradation of TiO<sub>2</sub> Photocatalysts via Graphene Hybridization

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