Preparation, characterization and photocatalytic activity of nanocrystalline thin film TiO2 catalysts towards 3,5-dichlorophenol degradation

Arabatzis, Ioannis; Antonaraki, S.; Στεργιόπουλος, Θωμάς; Hiskia, Anastasia; Papaconstantinou, E.; Bernard, Marie‐Claude; Falaras, Polycarpos

doi:10.1016/s1010-6030(01)00645-1

Cited by 210 publications

(105 citation statements)

References 29 publications

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“…However, the use of TiO 2 slurry reactor is still limited mainly due to difficult separation of TiO 2 particles from treated water. To overcome the problem, titania beads [6], TiO 2 -based thin film [7,8], fiberglass loaded with titania [9], and encapsulated titania within a zeolite framework [10] have been prepared and used in fixed bed. However, the activity of TiO 2 photocatalyst is reduced to a considerable extent in the application of these immobilizations because the effective surface area of photocatalysts decreases considerably.…”

Section: Introductionmentioning

confidence: 99%

Preparations and photocatalytic degradation of methyl orange in water on magnetically separable Bi₁₂TiO₂₀supported on nickel ferrite

Shangguan²,

Yuan

et al. 2007

Science and Technology of Advanced Materials

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A magnetically separable photocatalyst Bi 12 TiO 20 /SiO 2 /NiFe 2 O 4 (BSN) with a typical ferromagnetic hysteresis was prepared by a simple process: the magnetic 200 wt% SiO 2 /NiFe 2 O 4 (SN) dispersion prepared by a liquid catalytic phase transformation method and the visible-light-active photocatalyst Bi 12 TiO 20 prepared by a simple coprecipitation processing were mixed, sonificated, dried, and calcined at 550 1C. The prepared photocatalyst showed high photocatalytic activity for the degradation of methyl orange in water under UV irradiation and visible-light irradiation (l4400 nm), and it was easy to be separated from a slurry-type photoreactor under the application of an external magnetic field, being one of promising photocatalysts for wastewater treatment. Transmission electron microscope (TEM) and X-ray diffractometer (XRD) were used to characterize the structure of the photocatalyst, indicating that the magnetic SN particles adhered to the surface of the Bi 12 TiO 20 congeries. SiO 2 layer round the surface of NiFe 2 O 4 nanoparticles prevented effectively the injection of charges from TiO 2 particles to NiFe 2 O 4 , which gave rise to the increase in photocatalytic activity. r

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Section: Introductionmentioning

confidence: 99%

Preparations and photocatalytic degradation of methyl orange in water on magnetically separable Bi₁₂TiO₂₀supported on nickel ferrite

Shangguan²,

Yuan

et al. 2007

Science and Technology of Advanced Materials

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“…. This value represented very high particle size for our TiO 2 compared to the previous TiO 2 film made by sol-gel and doctor-blade technique, 8 where both showed Rms to be 0.35 and 23.94 nm, respectively. Figure 4 shows the current density-voltage (J-V) curves for three samples, sample 1, 2 in section 2.3, and pristine cell.…”

Section: Resultsmentioning

confidence: 56%

Some Features of Dye-sensitized Solar Cell Combining with Single-walled Carbon Nanotubes

Lee

Park

et al. 2014

Bulletin of the Korean Chemical Society

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A dye-sensitized solar cell (DSSC) was fabricated with a nanocrystalline TiO 2 film electrode on FTO glass, N719 dye, electrolytes (or CsSnI 3 ), and counter Pt electrode by incorporating it with single-walled carbon nanotubes (SWNTs). SWNTs were combined with TiO 2 film, CsSnI 3 , Pt electrode, separately, and the SWNTcontaining cell was compared with a pristine cell in cell performance. We also examined the performance change by pressing TiO 2 film, during cell fabrication, inside a high pressure chamber. Mostly, the change of conversion efficiency was compared for each cell, and an atomic force microscopy data were suggested to explain our results.

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“…As for all thin films, the peaks are not very intense because of the low quantity of material deposited and the size of the crystallites 33 . For the diffractograms of both films, the most representative peak is situated in the region of 25° and corresponds to the (101) plane of the anatase, typically found for films treated at 500 °C…”

Section: Tio 2 Films Characterizationmentioning

confidence: 96%

“…A pronounced peak is observed between 200 °C and 300 °C for the PEG system and, between 300 °C and 400 °C for the system without PEG. These peaks correspond to pronounced weight losses; hence they are attributed to the organic components combustion such as the solvent, stabilizer, alcoxide and the PEG 33 . The PEG modified xerogel showed a small peak between 450° and 500 °C, related to residual organic compounds within the sample.…”

Section: Thermal Analysis Of the Xerogels Obtained From The Tio 2 Solsmentioning

confidence: 99%

Photo-assisted electrochemical copper removal from cyanide solutions using porous TiO2 thin film photo-anodes

2013

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TiO 2 porous films were prepared on ITO coated glass slides by the sol-gel dip-coating method assisted with Polyethylene glycol (PEG). The films were used as photo-anodes in the photo-assisted electrolytic removal of cuprous ions in cyanide media. These were characterized by SEM, UV-Visible spectroscopy and XRD. The PEG modified films were free of cracks and developed a porous structure after heat treatment at 500 °C, due to the thermal decomposition of the structure associated PEG. It was demonstrated that the photo-assisted electrochemical reduction of copper is promoted by the use of modified TiO 2 films as photo-anodes, thanks to the greater surface area given by the PEG decomposition. However, the film thickness was found to be a critical factor in the process, to such an extent that films composed of 5 layers were completely inefficient, meaning that despite the open porosity, multilayered films acted as a barrier within the photo-electrolytic process.

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Preparation, characterization and photocatalytic activity of nanocrystalline thin film TiO2 catalysts towards 3,5-dichlorophenol degradation

Cited by 210 publications

References 29 publications

Preparations and photocatalytic degradation of methyl orange in water on magnetically separable Bi₁₂TiO₂₀supported on nickel ferrite

Preparations and photocatalytic degradation of methyl orange in water on magnetically separable Bi₁₂TiO₂₀supported on nickel ferrite

Some Features of Dye-sensitized Solar Cell Combining with Single-walled Carbon Nanotubes

Photo-assisted electrochemical copper removal from cyanide solutions using porous TiO2 thin film photo-anodes

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Preparation, characterization and photocatalytic activity of nanocrystalline thin film TiO2 catalysts towards 3,5-dichlorophenol degradation

Cited by 210 publications

References 29 publications

Preparations and photocatalytic degradation of methyl orange in water on magnetically separable Bi12TiO20supported on nickel ferrite

Preparations and photocatalytic degradation of methyl orange in water on magnetically separable Bi12TiO20supported on nickel ferrite

Some Features of Dye-sensitized Solar Cell Combining with Single-walled Carbon Nanotubes

Photo-assisted electrochemical copper removal from cyanide solutions using porous TiO2 thin film photo-anodes

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Product

Resources

About

Preparations and photocatalytic degradation of methyl orange in water on magnetically separable Bi₁₂TiO₂₀supported on nickel ferrite

Preparations and photocatalytic degradation of methyl orange in water on magnetically separable Bi₁₂TiO₂₀supported on nickel ferrite