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Application of TiO2 Photocatalyst for Improving Ozone Generation Efficiency.

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Title: Application of TiO2 Photocatalyst for Improving Ozone Generation Efficiency.
Authors: Chu, Yi Fan1 (AUTHOR), Pan, Kuan Luan1,2 (AUTHOR), Ko, Li Si1 (AUTHOR), Chang, Moo Been1 (AUTHOR) mbchang@ncuen.ncu.edu.tw
Source: Ozone: Science & Engineering. Mar/Apr2025, Vol. 47 Issue 2, p144-154. 11p.
Subjects: Ozone generators, Catalytic activity, Band gaps, Visible spectra, Absorption spectra
Abstract: With a strong oxidizing capability, ozone (O3) is widely used in industry. However, ozone generators on the market are expensive and require a lot of energy to operate, which remains the bottleneck for the wide applications. In this study, a novel and energy-efficient ozone generation system is developed via the combination of black-TiO2 photocatalyst and plasma system. Black-TiO2 catalyst is prepared by calcining commercial TiO2 catalyst at 550 °C under a nitrogen atmosphere to extend the absorption spectrum to visible light range to improve catalytic activity. The experimental results show that ozone generation efficiency can be greatly increased to 415 g O3/kWh via combined black-TiO2 catalyst and plasma with O2 as the feeding gas. This can be attributed to the fact that black-TiO2 catalyst with a smaller energy gap is more efficiently activated to form electron–hole pairs in plasma, which can enhance ozone generation. On the other hand, black-TiO2 catalyst can provide abundant active sites for active O atoms and O2 molecules to promote O3 generation. Black-TiO2 catalyst prepared in this study reveals good stability. Overall, combination of black-TiO2 catalyst with plasma reveals good ozone generation efficiency and has a good potential for practical applications. [ABSTRACT FROM AUTHOR]
Copyright of Ozone: Science & Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 183842056
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Application of TiO<subscript>2</subscript> Photocatalyst for Improving Ozone Generation Efficiency.
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  Data: <searchLink fieldCode="AR" term="%22Chu%2C+Yi+Fan%22">Chu, Yi Fan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pan%2C+Kuan+Luan%22">Pan, Kuan Luan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ko%2C+Li+Si%22">Ko, Li Si</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chang%2C+Moo+Been%22">Chang, Moo Been</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mbchang@ncuen.ncu.edu.tw</i>
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  Data: <searchLink fieldCode="JN" term="%22Ozone%3A+Science+%26+Engineering%22">Ozone: Science & Engineering</searchLink>. Mar/Apr2025, Vol. 47 Issue 2, p144-154. 11p.
– Name: Subject
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  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Ozone+generators%22">Ozone generators</searchLink><br /><searchLink fieldCode="DE" term="%22Catalytic+activity%22">Catalytic activity</searchLink><br /><searchLink fieldCode="DE" term="%22Band+gaps%22">Band gaps</searchLink><br /><searchLink fieldCode="DE" term="%22Visible+spectra%22">Visible spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption+spectra%22">Absorption spectra</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: With a strong oxidizing capability, ozone (O3) is widely used in industry. However, ozone generators on the market are expensive and require a lot of energy to operate, which remains the bottleneck for the wide applications. In this study, a novel and energy-efficient ozone generation system is developed via the combination of black-TiO2 photocatalyst and plasma system. Black-TiO2 catalyst is prepared by calcining commercial TiO2 catalyst at 550 °C under a nitrogen atmosphere to extend the absorption spectrum to visible light range to improve catalytic activity. The experimental results show that ozone generation efficiency can be greatly increased to 415 g O3/kWh via combined black-TiO2 catalyst and plasma with O2 as the feeding gas. This can be attributed to the fact that black-TiO2 catalyst with a smaller energy gap is more efficiently activated to form electron–hole pairs in plasma, which can enhance ozone generation. On the other hand, black-TiO2 catalyst can provide abundant active sites for active O atoms and O2 molecules to promote O3 generation. Black-TiO2 catalyst prepared in this study reveals good stability. Overall, combination of black-TiO2 catalyst with plasma reveals good ozone generation efficiency and has a good potential for practical applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ozone: Science & Engineering is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1080/01919512.2024.2407840
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 144
    Subjects:
      – SubjectFull: Ozone generators
        Type: general
      – SubjectFull: Catalytic activity
        Type: general
      – SubjectFull: Band gaps
        Type: general
      – SubjectFull: Visible spectra
        Type: general
      – SubjectFull: Absorption spectra
        Type: general
    Titles:
      – TitleFull: Application of TiO2 Photocatalyst for Improving Ozone Generation Efficiency.
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            NameFull: Chu, Yi Fan
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            NameFull: Pan, Kuan Luan
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            NameFull: Ko, Li Si
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            NameFull: Chang, Moo Been
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          Dates:
            – D: 01
              M: 03
              Text: Mar/Apr2025
              Type: published
              Y: 2025
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              Value: 47
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            – TitleFull: Ozone: Science & Engineering
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