The use of plastic optical fibers in photocatalysis of trichloroethylene

Joo, Hyunku; Jeong, Hee-Rok; Jeon, Myung-Seok; Moon, Il

doi:10.1016/s0927-0248(02)00372-0

Cited by 37 publications

(26 citation statements)

References 12 publications

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“…The light intensity meter measured the light intensity at a distance of 5 cm from the light-emitting position. The photocatalyst-coated POF was prepared by the use of the dip-coating method with TiO 2 or ZnO photocatalysts [8]. The POF, which was made by polymethylmethacrylate (PMMA) with a diameter of 2 mm, was used in the study for light transmission.…”

Section: Methodsmentioning

confidence: 99%

Treatment of Trichloroethylene with Photocatalyst-Coated Optical Fiber

Hsieh

Chen

2019

Water

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In this present study, we investigated the effect of photocatalyzation on the degradation of trichloroethylene (TCE) in the aqueous phase by a photocatalyst-coated plastic optical fiber (POF). Two light-emitting diodes (LEDs) with low light intensity were used as the light source and TiO2 and ZnO were used as photocatalysts, which were characterized by scanning electron microscope (SEM) and UV-Vis diffuse reflectance spectroscopy (DRS). The para-chlorobenzoic acid (pCBA) was used as the hydroxyl radical probe for kinetic study and for the calculation of hydroxyl radical conversion rate (ROH,UV ). Experimental results show that POF coated with TiO2 exhibited higher degradation efficiency of TCE in basic solution, but POF coated with ZnO performed better in acidic solution. The increase of coating times resulted in the decrease in degradation efficiency of TCE due to increased thickness of the photocatalyst layer. The enhancement of light intensity contributed to the improvement of photocatalytic treatment efficiency. The ROH,UV for TiO2 and ZnO coated POF increased from 2 × 103 to 8 × 103 M s cm2 mJ−1 and from 8 × 102 to 2 × 103 M s cm2 mJ−1, respectively, as the pH increased from 4 to 10.

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Section: Methodsmentioning

confidence: 99%

Treatment of Trichloroethylene with Photocatalyst-Coated Optical Fiber

Hsieh

Chen

2019

Water

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“…Titania (titanium dioxide, TiO2) is the common photocatalyst employed in water and air treatment with this advanced oxidation technology (Laoufi et al, 2008, Behnajady et al, 2008 and much research work has been devoted to the immobilization thereof, including the deposition on polymeric materials (Herrmann, 2005;Keshmiri et al, 2004;Coronado et al, 2008). Poly(methyl methacrylate) (PMMA), polystyrene (PS), polyamide (PA), polyethylene (PE) or poly(ethylene terephthalate) (PET) have been coated with titania (Joo et al, 2003;Iketani et al, 2003;Matsuda et al, 2003;Langlet et al, 2003;Yang et al, 2006;Strohm et al, 2003;Matsuzawa et al, 2008;Zhiyong et al, 2007;Sánchez et al, 2006). Many polymers present high transmittance in the TiO2 activation range (the UV-A region, in the case of the solar spectrum).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of several commercial polymers as support for TiO2 in photocatalytic applications

2014

Global NEST Journal

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This work is aimed to select the best synthetic polymers available in the market with high transmittance in the TiO2 activation range that can be coated with the semiconductor and withstand the photocatalytic oxidation conditions. Among eleven commercial organic polymers with different additives and processing techniques, only polypropylene, polystyrene, sheet moulding processed poly (methyl methacrylate) and rigid polyvinyl chloride presented transmittances higher than 80% at 360 nm , which allows irradiation there through. The selected polymers were coated without a calcination step with anatase-TiO2 obtained by sol-gel. Their weathering was studied during 150 days of exposure to solar radiation, with and without the TiO2 layer. It was observed that only poly (methyl methacrylate) retains the titania and the good optical and mechanical properties after the natural weathering, and thus is the best candidate for immobilization of TiO2 for air photocatalytic treatment applications.

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“…Nevertheless, the catalyst should strongly adhere onto support surface to resist against mechanical degradation and photo-corrosion. A literature survey has shown that various materials of different shapes have been proposed as catalyst support among which glass plate [9], glass fiber [10] and glass and ceramic bead [11], aluminum foil sheet [12], plastic fiber-optic cable [13] may be mentioned.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic performance of ZnO coated tubular reactor

Akyol¹

2010

Journal of Hazardous Materials

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The use of plastic optical fibers in photocatalysis of trichloroethylene

Cited by 37 publications

References 12 publications

Treatment of Trichloroethylene with Photocatalyst-Coated Optical Fiber

Treatment of Trichloroethylene with Photocatalyst-Coated Optical Fiber

Evaluation of several commercial polymers as support for TiO2 in photocatalytic applications

Photocatalytic performance of ZnO coated tubular reactor

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