Formation of thin films by the treatment of amorphous titania with H2O2

Matsuo, Katsuichi; Takeshita, Toshihiro; Nakano, Katsuyuki

doi:10.1016/0022-0248(90)90595-c

Cited by 18 publications

(15 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…25 To obtain a transparent yellow coating solution, 0.5 g of this preparation was dissolved in 6.0 Â 10 À5 m 3 of an aqueous hydrogen peroxide solution (31%). The inner or outer surfaces of Pyrex glass tubes were overspread with this viscous coating solution, using a brush if necessary.…”

Section: Preparation Of Photocatalyst and Its Immobilizationmentioning

confidence: 99%

Decomposition of formic acid in a photocatalytic reactor with a parallel array of four light sources

Wang

Shiraishi

Nakano

2002

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Preparation Of Photocatalyst and Its Immobilizationmentioning

confidence: 99%

Decomposition of formic acid in a photocatalytic reactor with a parallel array of four light sources

Wang

Shiraishi

Nakano

2002

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is supposed because of the quantity of the doped silver, it is only 3wt% to titania. Other features of titania thin films, for example, UV-vis spectra and SEM image, were reported in previous papers (Matsuo et al, 1990;Obuchi et al, 1995;Obuchi et al, 1999). Figure 3 shows a plot of the survival rate of L. pneumophila against the process time for reactors coated with the thin film of titania (P-Ti) or Ag-doped titania (Ag-Ti) under black-light UV irradiation.…”

Section: Methodsmentioning

confidence: 93%

Photocatalytic Disinfection of Legionella pneumophila on Silver-Doped Titania Thin Films

Obuchi¹,

Yanagi²,

Katoh³

et al. 2014

ENRR

Self Cite

View full text Add to dashboard Cite

The activities of thin films of titania and silver-doped titania for the photocatalytic disinfection of Legionella pneumophila in aqueous medium were examined and compared with each other. Both photocatalytic films disinfected L. pneumophila under UV irradiation; the Ag-doped film showed a higher activity than the non-doped one. The silver-doped titania film even showed a slight activity in disinfecting L. pneumophila under the absence of UV irradiation. This bactericidal effect in darkness overcomes a weakness of photocatalytic disinfection. Scanning electron micrographs of L. pneumophila after photocatalytic disinfection showed that the cell walls of the bacteria were destroyed in the presence of the thin film of Ag-doped titania. Furthermore, the photocatalytic action caused decomposition of the endotoxin leaked from the dead bacteria.

show abstract

“…Amorphous titanium dioxide powder, prepared from titanium tetraisopropoxide according to the literature, 10 was dissolved in an aqueous solution of hydrogen peroxide (30 v/v%), which gave a transparent yellow solution. Since this solution gradually gelled, the gel formed was resolubilized by further addition of hydrogen peroxide prior to use and then stirred vigorously until there was no further generation of oxygen bubbles.…”

Section: Methodsmentioning

confidence: 99%

Photocatalytic decomposition of acetaldehyde in air over titanium dioxide

Shiraishi

1999

J. Chem. Technol. Biotechnol.

View full text Add to dashboard Cite

The photocatalytic decomposition of acetaldehyde in air at initial concentrations ranging from 3 to 200 mg m À3 has been studied in a semitransparent closed box with an inlet volume of 0.056 m 3 . The photocatalytic reactors consisted of a glass tube, 250 mm long with inside diameters of 28, 35, or 45 mm, whose inner surface was coated with a thin ®lm of titanium dioxide, and a 6-W blacklight uorescent lamp located at the axis of the glass tube. The decomposition of acetaldehyde was almost complete within 1±3 h and its main product was carbon dioxide. A kinetic study showed that the photocatalytic reaction obeys a Langmuir adsorption isotherm. Although the light intensity was certainly decreased with the distance from the light source, the degree of this decrease was much smaller than the degree of the decrease in the kinetic constants, which suggests that the light intensity is not simply proportional to the degree of the photo-excitation of TiO 2 and the rate of the resulting photocatalytic decomposition of acetaldehyde. # 1999 Society of Chemical Industry Keywords: photocatalytic reaction; acetaldehyde; titanium dioxide; photocatalytic reactor; batch recirculation systemVolume of a box (m 3 ) INTRODUCTIONIn highly airtight houses that have little ventilation in order to save on the amount of energy required to maintain the room temperature almost constant throughout the year, various kinds of volatile organic compounds are released from the adhesives and preservatives used in house-building materials or from furniture. These compounds then accumulate in increasing amounts in the airtight room, which leads, in turn, to the discomfort of the inhabitant and to health-related complaints.

show abstract

Formation of thin films by the treatment of amorphous titania with H2O2

Cited by 18 publications

References 1 publication

Decomposition of formic acid in a photocatalytic reactor with a parallel array of four light sources

Decomposition of formic acid in a photocatalytic reactor with a parallel array of four light sources

Photocatalytic Disinfection of Legionella pneumophila on Silver-Doped Titania Thin Films

Photocatalytic decomposition of acetaldehyde in air over titanium dioxide

Contact Info

Product

Resources

About