Synthesis of visible-light-active nanosize rutile titania photocatalyst by low temperature dissolution–reprecipitation process

Yin, Shu; Hasegawa, Hitoshi; Maeda, Daisaku; Ishitsuka, M.; Sato, Tsugio

doi:10.1016/s1010-6030(03)00289-2

Cited by 173 publications

(109 citation statements)

References 11 publications

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“…Several factors such as temperature, time and pH needs to be considered to obtain single phases [26,30,31]. The aqueous phase with TiCl 4 solution in HCl has a very low pH, and therefore, the amount of urea plays an important role controlling the pH of this aqueous phase.…”

Section: 1-optimization Of the Crystalline Phase And Microstructuramentioning

confidence: 99%

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Pigments based on Cr and Sb doped TiO 2 prepared by microemulsion-mediated solvothermal synthesis for inkjet printing on ceramics

et al. 2015

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Nanoparticles of the ceramic pigment with composition Ti 0.97 Cr 0.015 Sb 0.015 O 2 were prepared by microemulsion-mediated solvothermal method at 180 ºC. Anatase or rutile single phase was obtained depending on the synthesis conditions. Scanning electron microscope analysis showed the formation of nanospheres with particle size around 600 nm. The anatase to rutile transformation temperature was determined by Raman spectroscopy. The evolution of the colour was studied, and it was related with the polymorphic transition. Yellow nanopigments were obtained at low temperature and huge orange colour was observed at high temperature. Nanopigments prepared at 180 ºC were tested with an industrial frit. Similar chromatic coordinates of an industrial orange ceramic pigment obtained at high temperatures were observed. -potential values of the nanoparticles were  -57 mV. The size, shape, colour and electrostatic stability of these nanoparticles make them potential candidates to be applied in glazes or inkjet printers as orange ceramic pigments.

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Section: 1-optimization Of the Crystalline Phase And Microstructuramentioning

confidence: 99%

“…The effect of pH on TiO 2 phase structure have been also extensively studied [30,31]. Regarding these studies, the low pH favours the formation of rutile phase while more alkaline media favours anatase phase formation.…”

Section: -Introductionmentioning

confidence: 99%

Pigments based on Cr and Sb doped TiO 2 prepared by microemulsion-mediated solvothermal synthesis for inkjet printing on ceramics

et al. 2015

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“…This process causes the particle agglomeration and the decrease in the specific surface area, retarding the photocatalytic activity. Crystalline TiO 2 particles are also synthesized by hydrothermal treatment of amorphous TiO 2 precipitate obtained by hydrolysis of titanium alkoxide 2), 3) or titanium salt. 4)6) In these processes, the crystalline phase and particle size can be changed by aging condition such as pH, temperature and pressure, but agglomeration of particles occurs.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photocatalytic activity of small brookite particles by self-hydrolysis of TiOCl2

Inada

Iwamoto

Enomoto

et al. 2011

J. Ceram. Soc. Japan

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The preparation of brookite particles was tried by self-hydrolysis of TiOCl 2 with HCl addition. When 0.1 M TiOCl 2 solution was heated at 100°C by reflux method, the precipitate was obtained within 15 min and was identified as brookite and anatase. By addition of HCl, the starting time of precipitation was delayed and small brookite formed beside rutile large rod particles. These results suggest that deprotonation at the early stage of reaction was suppressed but crystal growth at the late stage was promoted because of an increase in the solubility of TiO 2 sols. When the TiOCl 2 solution was heated at 100°C for 24 h in autoclave, rutile large particles and brookite small particles formed separately. The small brookite particles could be separated by centrifugation. The photocatalytic activity of synthesized brookite particles was lower compared to commercial brookite particles. When hydrothermal treatment was carried out for synthesized brookite, the photocatalytic activity was enhanced. This was due to improvement of crystallinity of brookite.

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“…Routes to synthesize or prepare titania materials are quite various; hydrolysis of alkoxide 1), 2) or inorganic salt, 3)-6) and so forth. Aqueous system is rather preferred for both cheaper and environmentally-benign production.…”

Section: Introductionmentioning

confidence: 99%

Effect of ultrasonication on anodic oxidation of titanium

Enomoto

Kurakazu

Inada

et al. 2009

J. Ceram. Soc. Japan

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Porous titania (TiO2) was synthesized under ultrasonic vibration via an anodic oxidation of titanium metal in various kinds of electrolyte such as HNO3, H2SO4, and their mixture. HNO3 resulted in amorphous or poorly-crystalline particles with mesopores while H2SO4 resulted in dense and crystalline film with macropores. Ultrasound in general decreased the maximum voltage, film thickness, and a rutile phase, while it increased the region for the formation of mesoporous structure. Role of ultrasound on the anodic oxidation is discussed.

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Synthesis of visible-light-active nanosize rutile titania photocatalyst by low temperature dissolution–reprecipitation process

Cited by 173 publications

References 11 publications

Pigments based on Cr and Sb doped TiO 2 prepared by microemulsion-mediated solvothermal synthesis for inkjet printing on ceramics

Pigments based on Cr and Sb doped TiO 2 prepared by microemulsion-mediated solvothermal synthesis for inkjet printing on ceramics

Synthesis and photocatalytic activity of small brookite particles by self-hydrolysis of TiOCl2

Effect of ultrasonication on anodic oxidation of titanium

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