The benefit of glass bead supports for efficient gas phase photocatalysis: Case study of a commercial and a synthesised photocatalyst

Verbruggen, Sammy W.; Ribbens, Stefan; Tytgat, Tom; Hauchecorne, Birger; Smits, Marianne; Meynen, Vera; Cool, Pegie; Martens, Johan A.; Lenaerts, Silvia

doi:10.1016/j.cej.2011.09.038

Cited by 56 publications

(40 citation statements)

References 30 publications

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“…[34] On the other hand the activity also drops when decreasing the nanoparticle size below 7 nm. This is due to the fact that the TiO 2 semiconductor displays discretization of its band structure for such small particles.…”

Section: Nanoparticlesmentioning

confidence: 98%

TiO2 photocatalysis for the degradation of pollutants in gas phase: From morphological design to plasmonic enhancement

Verbruggen

2015

Journal of Photochemistry and Photobiology C: Photochemistry Re

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290

123

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Please cite this article as: S.W. Verbruggen, TiO 2 photocatalysis for the degradation of pollutants in gas phase: from morphological design to plasmonic enhancement, Journal of Photochemistry and Photobiology C:Photochemistry Reviews (2015), http://dx. ABSTRACTTiO 2 -based photocatalysis has become a viable technology in various application fields such as (waste)water purification, photovoltaics/artificial photosynthesis, environmentally friendly organic synthesis and remediation of air pollution. Because of the increasing impact of bad air quality worldwide, this review focuses on the use and optimization of TiO 2 -based photocatalysts for gas phase applications. Over the past years various specific aspects of TiO 2 photocatalysis have been reviewed individually. The intent of this review is to offer a broad tutorial on (recent) trends in TiO 2 photocatalyst modification for the intensification of photocatalytic air treatment. After briefly introducing the fundamentals of photocatalysis, TiO 2 photocatalyst modification is discussed both on a morphological as well as an electronic level from the perspective of gas phase applications. The main focus is laid on recent developments, but also possible opportunities to the field. This review is intended as a solid introduction for researchers new to the field, as well as a summarizing update for established investigators.

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Section: Nanoparticlesmentioning

confidence: 98%

TiO2 photocatalysis for the degradation of pollutants in gas phase: From morphological design to plasmonic enhancement

Verbruggen

2015

Journal of Photochemistry and Photobiology C: Photochemistry Re

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290

123

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“… Schematic diagram of (a) a narrow slit, flat‐plate, single‐pass, flow‐over photoreactor made of a 75 × 200‐mm 2 glass plate coated with the photocatalyst, reproduced from 38 with permission from Elsevier; (b) packed‐bed single‐pass reactor with TiO 2 ‐coated glass beads, reproduced from 39 with permission from Elsevier; (c) single‐pass flow‐over annular photoreactor where (d) the commercial supported photocatalyst (non‐woven textile 1048 from Ahlstrom®) is deposited on the outer surface of the annular reactor containing a fluorescent tube in its center, reproduced from 40 with permission from Elsevier. …”

Section: Description Of Gas‐phase Reactorsmentioning

confidence: 99%

“…4 a) 38 or glass beads for packed‐bed reactors (Fig. 4 b) 39, textiles (Figs. 4 c, d) 40, fibers (Fig.…”

Section: Description Of Gas‐phase Reactorsmentioning

confidence: 99%

Gas‐Phase Photooxidation: Reactors and Materials

et al. 2015

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Photocatalytic vs. photosensitizing materials to be used for gas-phase photooxidation and photooxygenation, respectively, are described. An overview is given on reactive oxygen species specific to photocatalysis and photosensitization as well as on various kinds of gas-phase reactors and photocatalytic materials in order to illustrate the great number of possible configurations and conditions of use. Some efforts towards standardization of gas-phase photocatalytic reactors devoted to indoor-or outdoor-air treatment are mentioned. Examples for application of singlet oxygen in solvent-free photooxygenation reaction of volatile sulfides are given together with the properties of silica-based photosensitizing materials.

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“…Therefore, reactors with thin immobilized films have been developed to overcome deficiencies of slurry systems. The catalyst in this reactor is bonded to a solid substrate such as activated carbon (Shi et al, 2008), fiber-optic cables (Lim et al, 2009), fiberglass (Yu et al, 2006), glass beads (Verbruggen et al, 2011), quartz sand (Choy et al, 2008), silica gel (Zainudin et al, 2010), and stainless steel (Chen and Dionysiou, 2006). Dip coating from suspension, spray coating, sputtering, sol-gel related methods, and electrophoretic deposition (De Lasa et al, 2005;Hosseini et al, 2007) are techniques used to immobilize T i02 catalysts on these substrates.…”

Section: Introductionmentioning

confidence: 99%

Application of Artificial Neural Networks for Prediction of Photocatalytic Reactor

Delnavaz

2015

Water Environment Research

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In this paper, forecasting of kinetic constant and efficiency of photocatalytic process of T i02 nano powder immobilized on light expanded clay aggregates (LECA) was investigated. Synthetic phenolic wastewater, which is toxic and not easily biodegradable, was selected as the pollutant. The efficiency of the process in various operation conditions, including initial phenol concentration, pH, Ti02 concentration, retention time, and UV lamp intensity, was then measured. The T i02 nano powder was immobilized on LECA using slurry and sol-gel methods. Kinetics of photocatalytic reactions has been proposed to follow the Langmuir-Hinshelwood model in different initial phenol concentration and pH. Several steps of training and testing of the models were used to determine the appropriate architecture of the artificial neural network models (ANNs). The ANN-based models were found to provide an efficient and robust tool in predicting photocatalytic reactor efficiency and kinetic constant for treating phenolic compounds. Water Environ. Res., 87, 113 (2015).

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The benefit of glass bead supports for efficient gas phase photocatalysis: Case study of a commercial and a synthesised photocatalyst

Cited by 56 publications

References 30 publications

TiO2 photocatalysis for the degradation of pollutants in gas phase: From morphological design to plasmonic enhancement

TiO2 photocatalysis for the degradation of pollutants in gas phase: From morphological design to plasmonic enhancement

Gas‐Phase Photooxidation: Reactors and Materials

Application of Artificial Neural Networks for Prediction of Photocatalytic Reactor

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