Investigation on TiO2-coated optical fibers for gas-phase photocatalytic oxidation of acetone

Choi, Wonyong; Ko, Joung Yun; Park, Hyunwoong; Chung, Jong Shik

doi:10.1016/s0926-3373(00)00281-2

Cited by 215 publications

(133 citation statements)

References 26 publications

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“…In the references section, articles dealing with the application of TiO2 in cement, mortar and/or concrete have been reviewed (Diebold, 2003); (Lackhoff, Prieto, Nestle, Dehn, & Niessner, 2003); (Mills & Lee, 2002), indoor and outdoor paving stones (Lackhoff et al, 2003); glasses (Lackhoff et al, 2003); (Puzenat & Pichat, 2003) and plastics and/or glass fibers (Pozzo, Baltanás & Cassano, 1997); (Choi, Ko, Park & Chung, 2001); (Mills & Lee, 2002); (Diebold, 2003). Moreover, none of them make reference to the study about the incompatibility of carrier material with the use of TiO2 as photocatalytic material.…”

Section: State Of Artmentioning

confidence: 99%

Study of the applicability of TiO2 as a decontaminating agent over treated metal surfaces

Fernández¹,

Campo

Colorado

2016

Revista de la Construcción

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Study of the applicability of TiO 2 as a decontaminating agent over treated metal surfaces Estudio de la aplicabilidad del TiO 2 en su faceta descontaminante sobre superficies metálicas tratadas. (Main Author) Commercial Director and Director of Subsidiaries OHL, Spain. +34 917747017 C/Sor Ángela de la Cruz, 6-28020 Resumen La evolución trae consigo la contaminación, pero en el siglo XXI la sociedad ha sido consciente la importancia del control y minimización de las emisiones contaminantes de origen antrópico. Por esta razón, la investigación y aplicación de productos fotocatalíticos con fines descontaminantes ha aumentado exponencialmente en estos últimos años. El objetivo de este artículo es desarrollar la investigación y estudio de la utilización de vehículos no como agentes contaminantes, sino como elementos descontaminantes utilizando como metodología la aplicación directa sobre la carrocería de un producto con base de Dióxido de Titanio, cuya efectividad ya ha sido demostrada sobre en pavimentos asfálticos, así como el estudio de los resultados. Los resultados obtenidos muestran unos valores con una efectividad media, superior a la de productos que en la actualidad están siendo comercializados y aplicados en distintos medios. Una vez finalizados los estudios se abren numerosas líneas de investigación para obtener un producto más eficiente y cuya aplicación resulte favorable en el parque automovilístico mundial. Juan de Dios FernándezPalabras Clave: Fotocatálisis; Tratamiento, Contaminación; Dióxido de Titanio, Vehículo. AbstractThe progressive deterioration we cause to the environment by exhalation of pollutants into our atmosphere is not sustainable. The degradation of air quality and pollution, caused by human activity, is endangering the very life of our species and the planet. For this reason, research and application of photocatalytic products with decontamination purposes has exponentially increased in recent years. In this article, the aim of this paper is to develop research and study of the use of vehicles is to develop not as pollutants, but as decontaminating substances through direct application to the bodywork of a product holding a Titanium Dioxide base, whose effectiveness has been demonstrated over asphalt pavements, and the study results. The results show values with a proven effectiveness, higher than products currently being marketed and used in different means. Once completed the analysis, several lines of research are initiated to improve the uses proposed.

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Section: State Of Artmentioning

confidence: 99%

Study of the applicability of TiO2 as a decontaminating agent over treated metal surfaces

Fernández¹,

Campo

Colorado

2016

Revista de la Construcción

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“…Various porous materials have recently been used as a support for TiO2 and other nanoparticles, including silica (e.g., glass, quartz, optical fibers (Danion et al, 2004), molecular sieves (Choi et al, 2001)), porous polymers (Wu and Chang, 1998), clay (Kibanova et al, 2009), stainless steel (Candal et al, 2000),…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic abatement of o-xylene using adsorption enhanced ZnO/GAC catalyst in a continuous flow reactor: Catalytic potential, Fate of o-xylene and its by-products

2017

Global NEST Journal

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Photocatalytic abatement of o-xylene was investigated by immobilized ZnO on granular activated carbon (ZnO/GAC) under UV irradiation. Immobilization of ZnO increased the breakthrough time and removal capacity by 51 and 57%, respectively, in optimal conditions. The catalytic potential of the ZnO/GAC (86.5%) for o-xylene removal was far greater than simple GAC (13.5%), at the optimum condition. The maximum removal capacity with ZnO/GAC (3.12g o-xylene /gZnO/GAC) was observed at 100 °C, while the maximum removal capacity of simple GAC (1.37 g oxylene/g GAC) was observed a t 20 °C. The main intermediates of the o-xylene oxidation in photocatalytic process with GAC were methanoic acid, o-nitro-p-cresol, phenylmethanal, and methyl di-phenyl-methane. ZnO/GAC can highly catalyze the degradation of o-xylene in the presence of UV, with methanoic acid being the major intermediate desorbed from the bed. The results demonstrated that the ZnO/GAC is an efficient option for the removal of VOCs and biohazards emitted from industrial streams.

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“…• optical fibre reactors [32][33][34][35][36] to increase the illuminated surface area of immobilised catalyst…”

Section: Introductionmentioning

confidence: 99%

The influence of water vapour on the photocatalytic oxidation of cyclohexane in an internally illuminated monolith reactor

Dijk¹,

Simmelink²,

Mul³

2014

Applied Catalysis A: General

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This paper discusses effects of humidity on photocatalytic cyclohexane oxidation performed in an internally illuminated monolith reactor equipped with an immobilised layer of approximately 3 µm titania (Hombikat uv100). Using dry nitrogen containing 10-20% of oxygen, cyclohexanone is produced with high selectivity (> 90%) over cyclohexanol. The photocatalytic monolith deactivates within 80 minutes of operation. Regeneration of activity of such deactivated monolith is possible by air treatment at 450°C.When the applied nitrogen/oxygen gas is humidified, stable ketone production rates are obtained around 5 · 10 −6 mol h −1 at an optimised relative humidity of 65 %. Ketone over alcohol selectivity is lower in humidified conditions, the ratio of the cyclohexanol/cyclohexanone production rates increases from 0.4 to 1.0 as a function of increasing humidity from 30% to 90%.Rapid transients in water vapour content lead to relatively slow changes in concentration of in situ produced cyclohexanone and cyclohexanol. The observation of these changes are used to explain the effect of humidity on reactor performance.

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Investigation on TiO2-coated optical fibers for gas-phase photocatalytic oxidation of acetone

Cited by 215 publications

References 26 publications

Study of the applicability of TiO2 as a decontaminating agent over treated metal surfaces

Study of the applicability of TiO2 as a decontaminating agent over treated metal surfaces

Photocatalytic abatement of o-xylene using adsorption enhanced ZnO/GAC catalyst in a continuous flow reactor: Catalytic potential, Fate of o-xylene and its by-products

The influence of water vapour on the photocatalytic oxidation of cyclohexane in an internally illuminated monolith reactor

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