Highly Efficient TiO2 Film Photocatalyst. Degradation of Gaseous Acetaldehyde

Sopyan, Iis; Murasawa, Sadao; Hashimoto, Kazuhito; Fujishima, Akira

doi:10.1246/cl.1994.723

Cited by 161 publications

(87 citation statements)

References 13 publications

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“…The pristine SiO2 and TiO2 as well as the composite SiO2-TiO2 films have been extensively studied because of their extraordinary optical, catalytic, electrical and mechanical properties [35][36][37][38]. However, their gas sensing performance for NH3 has not been widely exploited.…”

Section: Introductionmentioning

confidence: 99%

NH3 sensing property and mechanisms of quartz surface acoustic wave sensors deposited with SiO2, TiO2, and SiO2-TiO2 composite films

Tang

et al. 2018

Sensors and Actuators B: Chemical

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Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. and SiO2-TiO2 films showed positive frequency shifts, whereas SiO2 film exhibits a negative frequency shift to NH3 gas. it is believed that the negative frequency shift was mainly caused by the increase of NH3 mass loading on the sensitive film while the positive frequency shift was associated to the condensation of the hydroxyl groups (-OH) on the film making the film stiffer and lighter, when exposed to NH3 gas. It demonstrated that humidity played a significant factor on the sensing performance. Comparative studies exhibited that the sensor based on the composite SiO2-TiO2 film had a much better sensitivity to NH3 at a low concentration level (1 ppm) with a response of 2 KHz, and also showed fast response and recovery, excellent selectivity, stability and reproducibility. Accepted Manuscript

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Section: Introductionmentioning

confidence: 99%

NH3 sensing property and mechanisms of quartz surface acoustic wave sensors deposited with SiO2, TiO2, and SiO2-TiO2 composite films

Tang

et al. 2018

Sensors and Actuators B: Chemical

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“…As the embodied functional material of the abovementioned process, a strong photocatalytic fiber composed of anatase-TiO 2 surface structure and silica core structure was developed [7]. Anatase-TiO 2 is well known as one of semiconductor catalysts, that exhibit a better photocatalytic activity by irradiation of a light whose energy is greater than the band gap (3.2 eV) [35]. The photocatalytic activity appears by irradiation of an ultraviolet (UV) light whose wavelength is shorter than 400 nm.…”

Section: Strong Photocatalytic Fiber (Titania/silica Fiber) Produced mentioning

confidence: 99%

Advances in Inorganic Fibers

Ishikawa¹

Polymeric and Inorganic Fibers

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“…The photocatalytic decomposition of gaseous acetaldehyde at 3000 ppm in a closed container with an inlet volume of 0.001 m 3 was carried out with a thin ®lm of TiO 2 coated on a glass plate and with TiO 2 particles sprinkled on a Petri dish under irradiation of UV light from a blacklight blue¯uorescent lamp. 8 Also, gaseous acetaldehyde at 10 ppm in a closed container with an inlet volume of 0.0016 m 3 was decomposed with TiO 2 particles deposited in a paper matrix under illumination of UV light from a 10-W white¯uorescent lamp.…”

Section: ±7mentioning

confidence: 99%

Photocatalytic decomposition of acetaldehyde in air over titanium dioxide

Shiraishi

1999

J. Chem. Technol. Biotechnol.

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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.

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Highly Efficient TiO2 Film Photocatalyst. Degradation of Gaseous Acetaldehyde

Cited by 161 publications

References 13 publications

NH3 sensing property and mechanisms of quartz surface acoustic wave sensors deposited with SiO2, TiO2, and SiO2-TiO2 composite films

NH3 sensing property and mechanisms of quartz surface acoustic wave sensors deposited with SiO2, TiO2, and SiO2-TiO2 composite films

Advances in Inorganic Fibers

Photocatalytic decomposition of acetaldehyde in air over titanium dioxide

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