Photocatalytic activity of TiO 2 nanoparticles: Effect of thermal annealing under various gaseous atmospheres

Anjana Sarkar; Andrey Shchukarev; Anne Riikka Leino; Krisztian Kordas; Jyri Pekka Mikkola; Pavel O. Petrov; Elena S. Tuchina; Alexey P. Popov; Maxim E. Darvin; Martina C. Meinke; Juergen Lademann; Valery V. Tuchin

doi:10.1088/0957-4484/23/47/475711

Photocatalytic activity of TiO ₂ nanoparticles: Effect of thermal annealing under various gaseous atmospheres

Anjana Sarkar^*
, Andrey Shchukarev
, Anne Riikka Leino
, Krisztian Kordas
, Jyri Pekka Mikkola
, Pavel O. Petrov
, Elena S. Tuchina
, Alexey P. Popov
, Maxim E. Darvin
, Martina C. Meinke
, Juergen Lademann
, Valery V. Tuchin

^*Corresponding author for this work

Not published at VTT

Umeå University
University of Oulu
Åbo Akademi University
Saratov State University
Charité Universitätsmedizin Berlin
RAS - Institute of Precision Mechanics and Control

Research output: Contribution to journal › Article › Scientific › peer-review

30 Citations (Scopus)

Abstract

The structure, composition and photocatalytic activity of TiO ₂ nanoparticles annealed in various gas atmospheres (N ₂, NH ₃ and H ₂) were studied in this work. The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy and diffuse optical reflectance/transmittance measurements, respectively. Photocatalytic properties of the materials were evaluated by three different methods: degradation of methyl orange in water, killing of Staphylococcus aureus bacteria and photogeneration of radicals in the presence of 3-carboxy-2,2,5,5-tetramethyl pyrrolidine-1-oxyl (PCA) marker molecules. The results indicate that the correlation between pretreatment and the photocatalytic performance depends on the photocatalytic processes and cannot be generalized.

Original language	English
Article number	475711
Journal	Nanotechnology
Volume	23
Issue number	47
DOIs	https://doi.org/10.1088/0957-4484/23/47/475711
Publication status	Published - 30 Nov 2012
MoE publication type	A1 Journal article-refereed

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Sarkar, A., Shchukarev, A., Leino, A. R., Kordas, K., Mikkola, J. P., Petrov, P. O., Tuchina, E. S., Popov, A. P., Darvin, M. E., Meinke, M. C., Lademann, J., & Tuchin, V. V. (2012). Photocatalytic activity of TiO ₂ nanoparticles: Effect of thermal annealing under various gaseous atmospheres. Nanotechnology, 23(47), Article 475711. https://doi.org/10.1088/0957-4484/23/47/475711

@article{f055cc874b7b43a69bffc5347acef704,

title = "Photocatalytic activity of TiO 2 nanoparticles: Effect of thermal annealing under various gaseous atmospheres",

abstract = "The structure, composition and photocatalytic activity of TiO 2 nanoparticles annealed in various gas atmospheres (N 2, NH 3 and H 2) were studied in this work. The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy and diffuse optical reflectance/transmittance measurements, respectively. Photocatalytic properties of the materials were evaluated by three different methods: degradation of methyl orange in water, killing of Staphylococcus aureus bacteria and photogeneration of radicals in the presence of 3-carboxy-2,2,5,5-tetramethyl pyrrolidine-1-oxyl (PCA) marker molecules. The results indicate that the correlation between pretreatment and the photocatalytic performance depends on the photocatalytic processes and cannot be generalized.",

author = "Anjana Sarkar and Andrey Shchukarev and Leino, \{Anne Riikka\} and Krisztian Kordas and Mikkola, \{Jyri Pekka\} and Petrov, \{Pavel O.\} and Tuchina, \{Elena S.\} and Popov, \{Alexey P.\} and Darvin, \{Maxim E.\} and Meinke, \{Martina C.\} and Juergen Lademann and Tuchin, \{Valery V.\}",

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doi = "10.1088/0957-4484/23/47/475711",

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T1 - Photocatalytic activity of TiO 2 nanoparticles

T2 - Effect of thermal annealing under various gaseous atmospheres

AU - Sarkar, Anjana

AU - Shchukarev, Andrey

AU - Leino, Anne Riikka

AU - Kordas, Krisztian

AU - Mikkola, Jyri Pekka

AU - Petrov, Pavel O.

AU - Tuchina, Elena S.

AU - Popov, Alexey P.

AU - Darvin, Maxim E.

AU - Meinke, Martina C.

AU - Lademann, Juergen

AU - Tuchin, Valery V.

PY - 2012/11/30

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N2 - The structure, composition and photocatalytic activity of TiO 2 nanoparticles annealed in various gas atmospheres (N 2, NH 3 and H 2) were studied in this work. The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy and diffuse optical reflectance/transmittance measurements, respectively. Photocatalytic properties of the materials were evaluated by three different methods: degradation of methyl orange in water, killing of Staphylococcus aureus bacteria and photogeneration of radicals in the presence of 3-carboxy-2,2,5,5-tetramethyl pyrrolidine-1-oxyl (PCA) marker molecules. The results indicate that the correlation between pretreatment and the photocatalytic performance depends on the photocatalytic processes and cannot be generalized.

AB - The structure, composition and photocatalytic activity of TiO 2 nanoparticles annealed in various gas atmospheres (N 2, NH 3 and H 2) were studied in this work. The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy and diffuse optical reflectance/transmittance measurements, respectively. Photocatalytic properties of the materials were evaluated by three different methods: degradation of methyl orange in water, killing of Staphylococcus aureus bacteria and photogeneration of radicals in the presence of 3-carboxy-2,2,5,5-tetramethyl pyrrolidine-1-oxyl (PCA) marker molecules. The results indicate that the correlation between pretreatment and the photocatalytic performance depends on the photocatalytic processes and cannot be generalized.

UR - https://www.scopus.com/pages/publications/84868309676

U2 - 10.1088/0957-4484/23/47/475711

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SN - 0957-4484

VL - 23

JO - Nanotechnology

JF - Nanotechnology

IS - 47

M1 - 475711

ER -

Photocatalytic activity of TiO ₂ nanoparticles: Effect of thermal annealing under various gaseous atmospheres

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