Enhanced photocatalytic activity of titania coatings fabricated at relatively low oxidation temperature with sulfate-acid-bath pretreatment

Sujun Guan; Liang Hao; Shota Kasuga; Hiroyuki Yoshida; Yanling Cheng; Yun Lu

doi:10.1007/s00339-020-03597-0

Enhanced photocatalytic activity of titania coatings fabricated at relatively low oxidation temperature with sulfate-acid-bath pretreatment

Sujun Guan, Liang Hao, Shota Kasuga, Hiroyuki Yoshida, Yanling Cheng, Yun Lu

Bioproducts and Biosystems Engineering

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

1 Scopus citations

Abstract

With the purpose of enhancing the photocatalytic activity of titania (TiO₂) coatings with low cost, a method of sulfuric-acid-bath pretreatment followed by simple oxidation in air has been proposed to fabricate TiO₂ coatings. The effect of oxidation temperature on the crystal structure, surface morphologies and photocatalytic activity of TiO₂ coatings was investigated, to figure out the suitable oxidation temperature. XRD and Raman’s results show that the phase transformation of TiO₂ starts at 773 K. The surface morphologies of TiO₂ coatings clearly show the porous-like structure at lower than 873 K. With raising the temperature, the photocatalytic activity of TiO₂ coatings firstly increases, then decreases, and reaches the highest at relatively low oxidation temperature of 773 K.

Original language	English (US)
Article number	561
Journal	Applied Physics A: Materials Science and Processing
Volume	126
Issue number	7
DOIs	https://doi.org/10.1007/s00339-020-03597-0
State	Published - Jul 1 2020

Bibliographical note

Funding Information:
The authors would like to express their appreciation to Dr. Hyuma Masu and Dr. Sayaka Kado from Center for Analytical Instrumentation, Chiba University. There is no funding source for this paper.

Publisher Copyright:
© 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

Keywords

Low temperature
Phase transformation
Photocatalytic activity
Sulfuric-acid-bath pretreatment
TiO coatings

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title = "Enhanced photocatalytic activity of titania coatings fabricated at relatively low oxidation temperature with sulfate-acid-bath pretreatment",

abstract = "With the purpose of enhancing the photocatalytic activity of titania (TiO2) coatings with low cost, a method of sulfuric-acid-bath pretreatment followed by simple oxidation in air has been proposed to fabricate TiO2 coatings. The effect of oxidation temperature on the crystal structure, surface morphologies and photocatalytic activity of TiO2 coatings was investigated, to figure out the suitable oxidation temperature. XRD and Raman{\textquoteright}s results show that the phase transformation of TiO2 starts at 773 K. The surface morphologies of TiO2 coatings clearly show the porous-like structure at lower than 873 K. With raising the temperature, the photocatalytic activity of TiO2 coatings firstly increases, then decreases, and reaches the highest at relatively low oxidation temperature of 773 K.",

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author = "Sujun Guan and Liang Hao and Shota Kasuga and Hiroyuki Yoshida and Yanling Cheng and Yun Lu",

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AU - Guan, Sujun

AU - Hao, Liang

AU - Kasuga, Shota

AU - Yoshida, Hiroyuki

AU - Cheng, Yanling

AU - Lu, Yun

N1 - Funding Information: The authors would like to express their appreciation to Dr. Hyuma Masu and Dr. Sayaka Kado from Center for Analytical Instrumentation, Chiba University. There is no funding source for this paper. Publisher Copyright: © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

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N2 - With the purpose of enhancing the photocatalytic activity of titania (TiO2) coatings with low cost, a method of sulfuric-acid-bath pretreatment followed by simple oxidation in air has been proposed to fabricate TiO2 coatings. The effect of oxidation temperature on the crystal structure, surface morphologies and photocatalytic activity of TiO2 coatings was investigated, to figure out the suitable oxidation temperature. XRD and Raman’s results show that the phase transformation of TiO2 starts at 773 K. The surface morphologies of TiO2 coatings clearly show the porous-like structure at lower than 873 K. With raising the temperature, the photocatalytic activity of TiO2 coatings firstly increases, then decreases, and reaches the highest at relatively low oxidation temperature of 773 K.

AB - With the purpose of enhancing the photocatalytic activity of titania (TiO2) coatings with low cost, a method of sulfuric-acid-bath pretreatment followed by simple oxidation in air has been proposed to fabricate TiO2 coatings. The effect of oxidation temperature on the crystal structure, surface morphologies and photocatalytic activity of TiO2 coatings was investigated, to figure out the suitable oxidation temperature. XRD and Raman’s results show that the phase transformation of TiO2 starts at 773 K. The surface morphologies of TiO2 coatings clearly show the porous-like structure at lower than 873 K. With raising the temperature, the photocatalytic activity of TiO2 coatings firstly increases, then decreases, and reaches the highest at relatively low oxidation temperature of 773 K.

KW - Low temperature

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KW - Photocatalytic activity

KW - Sulfuric-acid-bath pretreatment

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Enhanced photocatalytic activity of titania coatings fabricated at relatively low oxidation temperature with sulfate-acid-bath pretreatment

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