A review on the visible light active titanium dioxide photocatalysts for environmental applications

Miguel Pelaez; Nicholas T. Nolan; Suresh C. Pillai; Michael K. Seery; Polycarpos Falaras; Athanassios G. Kontos; Patrick S.M. Dunlop; Jeremy W.J. Hamilton; J. Anthony Byrne; Kevin O'Shea; Mohammad H. Entezari; Dionysios D. Dionysiou

doi:10.1016/j.apcatb.2012.05.036

A review on the visible light active titanium dioxide photocatalysts for environmental applications

Miguel Pelaez, Nicholas T. Nolan, Suresh C. Pillai, Michael K. Seery, Polycarpos Falaras, Athanassios G. Kontos, Patrick S.M. Dunlop, Jeremy W.J. Hamilton, J. Anthony Byrne, Kevin O'Shea, Mohammad H. Entezari, Dionysios D. Dionysiou

Technological University Dublin

Research output: Contribution to journal › Review article › peer-review

Abstract

Fujishima and Honda (1972) demonstrated the potential of titanium dioxide (TiO ₂) semiconductor materials to split water into hydrogen and oxygen in a photo-electrochemical cell. Their work triggered the development of semiconductor photocatalysis for a wide range of environmental and energy applications. One of the most significant scientific and commercial advances to date has been the development of visible light active (VLA) TiO ₂ photocatalytic materials. In this review, a background on TiO ₂ structure, properties and electronic properties in photocatalysis is presented. The development of different strategies to modify TiO ₂ for the utilization of visible light, including non metal and/or metal doping, dye sensitization and coupling semiconductors are discussed. Emphasis is given to the origin of visible light absorption and the reactive oxygen species generated, deduced by physicochemical and photoelectrochemical methods. Various applications of VLA TiO ₂, in terms of environmental remediation and in particular water treatment, disinfection and air purification, are illustrated. Comprehensive studies on the photocatalytic degradation of contaminants of emerging concern, including endocrine disrupting compounds, pharmaceuticals, pesticides, cyanotoxins and volatile organic compounds, with VLA TiO ₂ are discussed and compared to conventional UV-activated TiO ₂ nanomaterials. Recent advances in bacterial disinfection using VLA TiO ₂ are also reviewed. Issues concerning test protocols for real visible light activity and photocatalytic efficiencies with different light sources have been highlighted.

Original language	English
Pages (from-to)	331-349
Number of pages	19
Journal	Applied Catalysis B: Environmental
Volume	125
DOIs	https://doi.org/10.1016/j.apcatb.2012.05.036
Publication status	Published - 21 Aug 2012

Keywords

Air purification
Anatase
Cyanotoxins
Disinfection
EDCs
Emerging pollutants
Environmental application
Metal doping
N-TiO
Non-metal doping
Photocatalysis
Photocatalytic
Reactive oxygen species
Rutile
Solar
TiO
Treatment
Visible
Water

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Pelaez, M., Nolan, N. T., Pillai, S. C., Seery, M. K., Falaras, P., Kontos, A. G., Dunlop, P. S. M., Hamilton, J. W. J., Byrne, J. A., O'Shea, K., Entezari, M. H., & Dionysiou, D. D. (2012). A review on the visible light active titanium dioxide photocatalysts for environmental applications. Applied Catalysis B: Environmental, 125, 331-349. https://doi.org/10.1016/j.apcatb.2012.05.036

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title = "A review on the visible light active titanium dioxide photocatalysts for environmental applications",

abstract = "Fujishima and Honda (1972) demonstrated the potential of titanium dioxide (TiO 2) semiconductor materials to split water into hydrogen and oxygen in a photo-electrochemical cell. Their work triggered the development of semiconductor photocatalysis for a wide range of environmental and energy applications. One of the most significant scientific and commercial advances to date has been the development of visible light active (VLA) TiO 2 photocatalytic materials. In this review, a background on TiO 2 structure, properties and electronic properties in photocatalysis is presented. The development of different strategies to modify TiO 2 for the utilization of visible light, including non metal and/or metal doping, dye sensitization and coupling semiconductors are discussed. Emphasis is given to the origin of visible light absorption and the reactive oxygen species generated, deduced by physicochemical and photoelectrochemical methods. Various applications of VLA TiO 2, in terms of environmental remediation and in particular water treatment, disinfection and air purification, are illustrated. Comprehensive studies on the photocatalytic degradation of contaminants of emerging concern, including endocrine disrupting compounds, pharmaceuticals, pesticides, cyanotoxins and volatile organic compounds, with VLA TiO 2 are discussed and compared to conventional UV-activated TiO 2 nanomaterials. Recent advances in bacterial disinfection using VLA TiO 2 are also reviewed. Issues concerning test protocols for real visible light activity and photocatalytic efficiencies with different light sources have been highlighted.",

keywords = "Air purification, Anatase, Cyanotoxins, Disinfection, EDCs, Emerging pollutants, Environmental application, Metal doping, N-TiO, Non-metal doping, Photocatalysis, Photocatalytic, Reactive oxygen species, Rutile, Solar, TiO, Treatment, Visible, Water",

author = "Miguel Pelaez and Nolan, {Nicholas T.} and Pillai, {Suresh C.} and Seery, {Michael K.} and Polycarpos Falaras and Kontos, {Athanassios G.} and Dunlop, {Patrick S.M.} and Hamilton, {Jeremy W.J.} and Byrne, {J. Anthony} and Kevin O'Shea and Entezari, {Mohammad H.} and Dionysiou, {Dionysios D.}",

year = "2012",

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doi = "10.1016/j.apcatb.2012.05.036",

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AU - Pelaez, Miguel

AU - Nolan, Nicholas T.

AU - Pillai, Suresh C.

AU - Seery, Michael K.

AU - Falaras, Polycarpos

AU - Kontos, Athanassios G.

AU - Dunlop, Patrick S.M.

AU - Hamilton, Jeremy W.J.

AU - Byrne, J. Anthony

AU - O'Shea, Kevin

AU - Entezari, Mohammad H.

AU - Dionysiou, Dionysios D.

PY - 2012/8/21

Y1 - 2012/8/21

N2 - Fujishima and Honda (1972) demonstrated the potential of titanium dioxide (TiO 2) semiconductor materials to split water into hydrogen and oxygen in a photo-electrochemical cell. Their work triggered the development of semiconductor photocatalysis for a wide range of environmental and energy applications. One of the most significant scientific and commercial advances to date has been the development of visible light active (VLA) TiO 2 photocatalytic materials. In this review, a background on TiO 2 structure, properties and electronic properties in photocatalysis is presented. The development of different strategies to modify TiO 2 for the utilization of visible light, including non metal and/or metal doping, dye sensitization and coupling semiconductors are discussed. Emphasis is given to the origin of visible light absorption and the reactive oxygen species generated, deduced by physicochemical and photoelectrochemical methods. Various applications of VLA TiO 2, in terms of environmental remediation and in particular water treatment, disinfection and air purification, are illustrated. Comprehensive studies on the photocatalytic degradation of contaminants of emerging concern, including endocrine disrupting compounds, pharmaceuticals, pesticides, cyanotoxins and volatile organic compounds, with VLA TiO 2 are discussed and compared to conventional UV-activated TiO 2 nanomaterials. Recent advances in bacterial disinfection using VLA TiO 2 are also reviewed. Issues concerning test protocols for real visible light activity and photocatalytic efficiencies with different light sources have been highlighted.

AB - Fujishima and Honda (1972) demonstrated the potential of titanium dioxide (TiO 2) semiconductor materials to split water into hydrogen and oxygen in a photo-electrochemical cell. Their work triggered the development of semiconductor photocatalysis for a wide range of environmental and energy applications. One of the most significant scientific and commercial advances to date has been the development of visible light active (VLA) TiO 2 photocatalytic materials. In this review, a background on TiO 2 structure, properties and electronic properties in photocatalysis is presented. The development of different strategies to modify TiO 2 for the utilization of visible light, including non metal and/or metal doping, dye sensitization and coupling semiconductors are discussed. Emphasis is given to the origin of visible light absorption and the reactive oxygen species generated, deduced by physicochemical and photoelectrochemical methods. Various applications of VLA TiO 2, in terms of environmental remediation and in particular water treatment, disinfection and air purification, are illustrated. Comprehensive studies on the photocatalytic degradation of contaminants of emerging concern, including endocrine disrupting compounds, pharmaceuticals, pesticides, cyanotoxins and volatile organic compounds, with VLA TiO 2 are discussed and compared to conventional UV-activated TiO 2 nanomaterials. Recent advances in bacterial disinfection using VLA TiO 2 are also reviewed. Issues concerning test protocols for real visible light activity and photocatalytic efficiencies with different light sources have been highlighted.

KW - Air purification

KW - Anatase

KW - Cyanotoxins

KW - Disinfection

KW - EDCs

KW - Emerging pollutants

KW - Environmental application

KW - Metal doping

KW - N-TiO

KW - Non-metal doping

KW - Photocatalysis

KW - Photocatalytic

KW - Reactive oxygen species

KW - Rutile

KW - Solar

KW - TiO

KW - Treatment

KW - Visible

KW - Water

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U2 - 10.1016/j.apcatb.2012.05.036

DO - 10.1016/j.apcatb.2012.05.036

M3 - Review article

AN - SCOPUS:84863493867

SN - 0926-3373

VL - 125

SP - 331

EP - 349

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

ER -

A review on the visible light active titanium dioxide photocatalysts for environmental applications

Abstract

Keywords

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