Tailoring the photocatalytic activity of nanoparticulate zinc oxide by transition metal oxide doping

Aaron Dodd, Allan Mckinley, T. Tsuzuki, Martin Saunders

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The successful use of nanoparticulate ZnO in applications such as UV-screening agents or photocatalyst forthe destruction of chemicalwaste requires the development of techniques for controlling its photocatalyticactivity. In this study, we have investigated transition metal doping as a means of achieving this goal.Powders of ZnO, MnxZn1−xO, and CoxZn1−xOwere synthesised by a three-stage process consisting of highenergymechanical milling, heat treatment, andwashing. The photocatalytic activity of these powderswasevaluated using the spin-trapping technique with electron paramagnetic resonance spectroscopy. It wasfound that the photocatalytic activity of CoxZn1−xO progressively decreased with the doping level. Incontrast, the activity of MnxZn1−xO initially increased with doping up to a level of 2 mol% and thereafterdeclined. These results demonstrate that doping with transition metal oxides can be used to tailor thephotocatalytic properties of nanoparticulate ZnO.
Original languageEnglish
Pages (from-to)382-386
JournalMaterials Chemistry and Physics
Volume114
Issue number1
DOIs
Publication statusPublished - 2009

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Zinc Oxide
Zinc oxide
zinc oxides
Oxides
Transition metals
metal oxides
transition metals
Doping (additives)
Milling (machining)
Photocatalysts
Powders
destruction
Paramagnetic resonance
electron paramagnetic resonance
Screening
heat treatment
screening
trapping
Heat treatment
Spectroscopy

Cite this

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abstract = "The successful use of nanoparticulate ZnO in applications such as UV-screening agents or photocatalyst forthe destruction of chemicalwaste requires the development of techniques for controlling its photocatalyticactivity. In this study, we have investigated transition metal doping as a means of achieving this goal.Powders of ZnO, MnxZn1−xO, and CoxZn1−xOwere synthesised by a three-stage process consisting of highenergymechanical milling, heat treatment, andwashing. The photocatalytic activity of these powderswasevaluated using the spin-trapping technique with electron paramagnetic resonance spectroscopy. It wasfound that the photocatalytic activity of CoxZn1−xO progressively decreased with the doping level. Incontrast, the activity of MnxZn1−xO initially increased with doping up to a level of 2 mol{\%} and thereafterdeclined. These results demonstrate that doping with transition metal oxides can be used to tailor thephotocatalytic properties of nanoparticulate ZnO.",
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Tailoring the photocatalytic activity of nanoparticulate zinc oxide by transition metal oxide doping. / Dodd, Aaron; Mckinley, Allan; Tsuzuki, T.; Saunders, Martin.

In: Materials Chemistry and Physics, Vol. 114, No. 1, 2009, p. 382-386.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tailoring the photocatalytic activity of nanoparticulate zinc oxide by transition metal oxide doping

AU - Dodd, Aaron

AU - Mckinley, Allan

AU - Tsuzuki, T.

AU - Saunders, Martin

PY - 2009

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AB - The successful use of nanoparticulate ZnO in applications such as UV-screening agents or photocatalyst forthe destruction of chemicalwaste requires the development of techniques for controlling its photocatalyticactivity. In this study, we have investigated transition metal doping as a means of achieving this goal.Powders of ZnO, MnxZn1−xO, and CoxZn1−xOwere synthesised by a three-stage process consisting of highenergymechanical milling, heat treatment, andwashing. The photocatalytic activity of these powderswasevaluated using the spin-trapping technique with electron paramagnetic resonance spectroscopy. It wasfound that the photocatalytic activity of CoxZn1−xO progressively decreased with the doping level. Incontrast, the activity of MnxZn1−xO initially increased with doping up to a level of 2 mol% and thereafterdeclined. These results demonstrate that doping with transition metal oxides can be used to tailor thephotocatalytic properties of nanoparticulate ZnO.

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