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

Abstract

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.

Three-Dimensional TiO2 Structures Incorporated with Tungsten Oxide for Treatment of Toxic Aromatic Volatile Compounds

“…The photocatalysis of titanium dioxide (TiO 2 ) is an advanced oxidation method that can efficiently be applied in the treatment of a variety of environmental pollutants [4][5][6][7][8][9]. Nevertheless, the environmental application of TiO 2 is obstructed by a wide band gap, which is restricted to the ultraviolet (UV) region [6,8,10].…”

Photocatalytical Degradation of Toluene and Cyclohexane Using LED Illumination

“…Toluene is very often chosen as a model pollutant in photocatalytical processes, which is very advantageous in terms of comparing obtained results. The photodegradation efficiency of toluene in the presence of titania-based photocatalysts may even reach 100% [12][13]. Toluene is one of the typical indoor volatile organic compounds, as well as a member of the BTEX group.…”

Efficient Mineralization of Paracetamol Using the Nanocomposite TiO2/Zn(II) Phthalocyanine as Photocatalyst

“…Since initial studies by Fujishima and Honda, 1 heterogeneous photocatalysis 2 has attracted considerable attention due to its many technological applications, such as H 2 production, [3][4][5] CO 2 reduction, 6-8 environmental remediation, [9][10][11][12] among others. TiO 2 has been widely used in heterogeneous photocatalysis due its low cost, low toxicity, chemical and photochemical stability, usually expressive photocatalytic activity and versatility.…”

“…Several strategies have been employed to overcome this limitation, including doping 3 and production of nanocomposites. 9,[12][13][14] TiO 2 -based photocatalysis has been specially used in environmental remediation for the removal of recalcitrant and hazardous organic pollutants in wastewater. 9,15 The radicals produced from its excitation by light are able to efficiently oxidize organic pollutants leading in some cases to a complete mineralization of the organic matter.…”

“…TiO 2 has been widely used in heterogeneous photocatalysis due its low cost, low toxicity, chemical and photochemical stability, usually expressive photocatalytic activity and versatility. 2,10,12,13 Its main limitation as photocatalyst is related to the lack of absorption in the visible region, which limits its use under solar irradiation. Several strategies have been employed to overcome this limitation, including doping 3 and production of nanocomposites.…”