Characterisation of water-soluble TiO<sub>2</sub> and its photocatalytic activity under visible light

Lou, Fengyan; Qian, Xueren; Jin, Yong; Zhou, Min

doi:10.1179/1432891715z.0000000001779

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…Alcohols (e.g., isopropanol, tert-butanol or benzyl alcohol) have also been used as oxygen donors [ 21 , 29 , 30 ]. In particular, the benzyl alcohol route, based on the reaction of various Ti precursors (TiCl 4 , Ti(O i Pr) 4 ) with excess of benzyl alcohol acting as solvent, oxygen donor and surface ligand, has been extensively used to prepare TiO 2 nanoparticles in the absence of a capping agent [ 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Tuning Texture and Morphology of Mesoporous TiO2 by Non-Hydrolytic Sol-Gel Syntheses

et al. 2018

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The development of powerful synthetic methodologies is paramount in the design of advanced nanostructured materials. Owing to its remarkable properties and low cost, nanostructured TiO2 is widely investigated for applications such as photocatalysis, energy conversion or energy storage. In this article we report the synthesis of mesoporous TiO2 by three different non-hydrolytic sol-gel routes, and we investigate the influence of the synthetic route and of the presence and nature of the solvent on the structure, texture and morphology of the materials. The first route is the well-known ether route, based on the reaction of TiCl4 with iPr2O. The second and third routes, which have not been previously described for the synthesis of mesoporous TiO2, involve the reaction of Ti(OiPr)4 with stoichiometric amounts of acetophenone and benzoic anhydride, respectively. All materials are characterized by XRD, N2 physisorption and SEM. By playing with the non-hydrolytic route used and the reaction conditions (presence of a solvent, nature of the solvent, calcination), it is possible to tune the morphology and texture of the TiO2. Depending on the reaction conditions, a large variety of mesoporous TiO2 nanostructures could be obtained, resulting from the spontaneous aggregation of TiO2 nanoparticles, either rounded nanoparticles, platelets or nanorods. These nanoparticle networks exhibited a specific surface area up to 250 m2 g−1 before calcination, or up to 110 m2 g−1 after calcination.

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Section: Introductionmentioning

confidence: 99%

Tuning Texture and Morphology of Mesoporous TiO2 by Non-Hydrolytic Sol-Gel Syntheses

et al. 2018

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“…In this photocatalysis process, photoexcited carriers in semiconductor nanostructures facilitate the breaking of dye molecules into more diminutive innocuous molecules through the redox reaction. The nanostructures of semiconductors like ZnO and TiO 2 have already been popular for this photocatalysis process [1][2][3][4][5] . As the band gaps of ZnO and TiO 2 are more than 3 eV, so these materials are independently found to be very useful for UV photocatalysis application.…”

Section: Introductionmentioning

confidence: 99%

Visible light photocatalytic dye decomposition behaviour of solid state reaction grown Zn₂TiO₄ nanoparticles

et al. 2018

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In this investigation, visible photocatalytic dye decomposition is carried out with compound semiconductor nanoparticles of zinc orthotitanate (Zn2TiO4). These nanoparticles were grown by the solid state reaction method and characterized by field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, diffuse reflectance spectroscopy, photoluminescence study, and Brunauer–Emmett–Teller (BET) study. The BET surface area of the Zn2TiO4 nanoparticles was found to be 8.78 m2/g. The photocatalytic activity is carried out by using a 500 W halogen light source having a spectrum in the range of 450 to 860 nm and the reaction kinetics was found to be the pseudo first order. The reaction rate constant was found to be 0.069 min−1. Discussion is given on the possible mechanism of the observed visible photocatalytic dye decomposition activity. The cost of the material used is very low, so it could be very useful for visible photocatalytic dye decomposition.

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Water-soluble titanium-oxides: Complexes, clusters and nanocrystals

Chakraborty

Weinstock

2019

Coordination Chemistry Reviews

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Characterisation of water-soluble TiO₂ and its photocatalytic activity under visible light

Cited by 5 publications

References 16 publications

Tuning Texture and Morphology of Mesoporous TiO2 by Non-Hydrolytic Sol-Gel Syntheses

Tuning Texture and Morphology of Mesoporous TiO2 by Non-Hydrolytic Sol-Gel Syntheses

Visible light photocatalytic dye decomposition behaviour of solid state reaction grown Zn₂TiO₄ nanoparticles

Water-soluble titanium-oxides: Complexes, clusters and nanocrystals

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Characterisation of water-soluble TiO2 and its photocatalytic activity under visible light

Cited by 5 publications

References 16 publications

Tuning Texture and Morphology of Mesoporous TiO2 by Non-Hydrolytic Sol-Gel Syntheses

Tuning Texture and Morphology of Mesoporous TiO2 by Non-Hydrolytic Sol-Gel Syntheses

Visible light photocatalytic dye decomposition behaviour of solid state reaction grown Zn2TiO4 nanoparticles

Water-soluble titanium-oxides: Complexes, clusters and nanocrystals

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Characterisation of water-soluble TiO₂ and its photocatalytic activity under visible light

Visible light photocatalytic dye decomposition behaviour of solid state reaction grown Zn₂TiO₄ nanoparticles