Synthesis of nanosized TiO2 particles in reverse micelle systems and their photocatalytic activity for degradation of toluene in gas phase

Inaba, Ryoji; Fukahori, Takayuki; Hamamoto, Masato; Ohno, Teruhisa

doi:10.1016/j.molcata.2006.06.053

Cited by 57 publications

(37 citation statements)

References 45 publications

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“…Its toluene removal ratio and mineralization ratio were 74 and 66%, respectively, more than four times than that of the SSR derived sample. The discrepancy between the removal ratio and mineralization ratio is due to the fact that some of the reaction intermediates are stable and hardly oxidized compared with toluene [23].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of CaIn2O4 Rods and Its Photocatalytic Performance Under Visible-light Irradiation

et al. 2009

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A type of CaIn 2 O 4 particle was synthesized at a relatively low temperature by a solution-combustion method using calcium nitrate and indium nitrate as oxidizers and glycine as a fuel, followed by a high-temperature postannealing, during which the nanometric grains of the as-combusted CaIn 2 O 4 powder self-assembled into nanocapsules, and subsequently the nano-capsules linked end to end to form the regular CaIn 2 O 4 rods with the diameter of 300 nm and the length of about 2 lm. The CaIn 2 O 4 rods showed significantly higher photocatalytic activity for methylene blue degradation and toluene oxidation under visible-light irradiation than that of the sample synthesized by the conventional solid-state reaction. Particularly, the Ptdispersed CaIn 2 O 4 rods exhibited excellent photocatalytic activity for water decomposition under visible-light irradiation. The high crystallization degree, low impurity level and relatively large surface area of CaIn 2 O 4 rods were considered as the important factors for its high photocatalytic performance.

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Section: Resultsmentioning

confidence: 99%

Synthesis of CaIn2O4 Rods and Its Photocatalytic Performance Under Visible-light Irradiation

et al. 2009

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“…23,[28][29][30][31] Triton-X has been used basically in the preparation of titania by pressurized uid extraction and supercritical drying methods. 4,6,7,[32][33][34][35] Several studies have been published in which reverse micelles have been used in the synthesis of nanoporous materials. In this paper, we present the rst systematic study of the synthesis of porous titanium dioxide with the use of electrically neutral amphiphilic molecules of the so-called Triton-X series forming reverse micelles.…”

Section: 21mentioning

confidence: 99%

Tuning the porosity and surface characteristics of nanoporous titania using non-ionic surfactant reverse micelles

Paschalidou

Theocharis

2018

RSC Adv.

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Nanoporous titania was prepared from non-ionic surfactant reverse micelles (e.g. Triton-X) and the effects of the chain length of the surfactants and calcination temperature of the precursor gels on the surface properties of the product (mesoporous titania) were investigated. The studies included sample characterization of the precursor gels from the titania samples characterized by UV-Vis, ATR-FTIR, XRD, TGA/DSC and the titania samples by N 2 -adsorption BET, XRD, FT-IR, UV-Vis diffuse reflectance and SEM measurements after calcination at 400 C, 500 C, 600 C, 700 C and 800 C. According to the experimental results, generally increasing the length of the polar tail of Triton-X results in an increased specific surface area and volume, and an average pore diameter of the solids. Moreover, increasing the length of the polar tail is associated with a smaller crystallite size and higher thermal stability of the materials. Finally, a nucleation mechanism of the titania particles within the aqueous centre of the reversed micelles is proposed.

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“…Inaba et al [15] prepared titanium dioxide nanoparticles in a reverse micelle system composed of water, Triton X-100 and isooctane. The TiO 2 nanoparticles showed monodispersity, a large surface area and high degrees of crystallinity and thermostability.…”

Section: Introductionmentioning

confidence: 99%

“…The particle size of TiO 2 was controlled by changing the water content of the reverse micelle solution [15]. A reverse micelle system is also favorable for preparation of nanosilver particles with narrow size distribution.…”

Section: Introductionmentioning

confidence: 99%

Silver-doped TiO2 prepared by microemulsion method: Surface properties, bio- and photoactivity

Zielińska

Kowalska

Sobczak

et al. 2010

Separation and Purification Technology

188

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A series of Ag-TiO 2 photocatalysts were obtained in microemulsion system (water/AOT/cyclohexane), using several Ag precursor amount ranging from 1.5 to 8.5 mol.%. The photocatalysts' characteristics by X-ray diffraction, STEM microscopy, UV-Vis spectroscopy, X-ray photoelectron spectroscopy, BET methods showed that a sample with the highest photo-and bioactivity had anatase structure, about 90 m 2 /g specific surface area, absorbed light for λ>400 nm and contained 1.64 at.% of silver (0.30 at.% of Ag 0 and 1.34 at.% of Ag 2 O) and about 13 at.% of carbon in the surface layer.The photocatalytic activity of the catalysts was estimated by measuring the decomposition rate of phenol in 0.21 mM aqueous solution under visible and ultraviolet light irradiation.The bioactivity of silver-doped titanium dioxide nanocomposites was estimated using

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Synthesis of nanosized TiO2 particles in reverse micelle systems and their photocatalytic activity for degradation of toluene in gas phase

Cited by 57 publications

References 45 publications

Synthesis of CaIn2O4 Rods and Its Photocatalytic Performance Under Visible-light Irradiation

Synthesis of CaIn2O4 Rods and Its Photocatalytic Performance Under Visible-light Irradiation

Tuning the porosity and surface characteristics of nanoporous titania using non-ionic surfactant reverse micelles

Silver-doped TiO2 prepared by microemulsion method: Surface properties, bio- and photoactivity

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