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Mixed Metal Oxide W-TiO 2 Nanopowder for Environmental Process: Synergy of Adsorption and Photocatalysis.

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Title: Mixed Metal Oxide W-TiO 2 Nanopowder for Environmental Process: Synergy of Adsorption and Photocatalysis.
Authors: Cheng, Khley1 (AUTHOR) chengkhley@yahoo.com, Heng, Socheata1 (AUTHOR) socheataheng3579@gmail.com, Tieng, Siteng1 (AUTHOR) tiengsiteng@gmail.com, David, Ford1 (AUTHOR) forddavidaus@gmail.com, Dine, Sarah2 (AUTHOR) sarah.dine@lspm.cnrs.fr, Haddad, Oriana2 (AUTHOR) oriana.haddad@cnrs.fr, Colbeau-Justin, Christophe3 (AUTHOR) christophe.colbeau-justin@universite-paris-saclay.fr, Traore, Mamadou2 (AUTHOR) mamadou.traore@lspm.cnrs.fr, Kanaev, Andrei2 (AUTHOR) andrei.kanaev@lspm.cnrs.fr
Source: Nanomaterials (2079-4991). May2024, Vol. 14 Issue 9, p765. 18p.
Subjects: Photocatalysis, Metallic oxides, Adsorption (Chemistry), Industrial wastes, Tungsten trioxide, Visible spectra, Factories, Methylene blue
Abstract: A mixed metal oxide W-TiO2 nanopowder photocatalyst was prepared by using the sol–gel method with a broad range of elemental compositions x = CW/(CW + CTi), including TiO2 and WO3. The material was structurally characterized and evaluated in adsorption and photocatalytic processes by testing its removal capacity of a representative pollutant methylene blue (MB) in aqueous solutions and under UV-A and sunlight illuminations. The nanopowders appeared to be more effective adsorbents than pure TiO2 and WO3 materials, showing a maximum at 15 mol% W, which was set as the tungsten solubility limit in anatase titania. At the same time, the photocatalytic decomposition of MB peaked at 2 mol% W. The examination of different compositions showed that the most effective MB removal took place at 15 mol% W, which was attributed to the combined action of adsorption and heterogeneous photocatalysis. Moreover, MB decomposition under sunlight was stronger than under UV-A, suggesting photocatalyst activation by visible light. The pollutant removal efficiency of the material with 15 mol% W was enhanced by a factor of ~10 compared to pure TiO2 at the beginning of the process, which shows its high potential for use in depollution processes in emergency cases of a great pollutant leak. As a result, a Wx=0.15-TiO2 catalyst could be of high interest for wastewater purification in industrial plants. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI 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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  Data: Mixed Metal Oxide W-TiO 2 Nanopowder for Environmental Process: Synergy of Adsorption and Photocatalysis.
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  Data: <searchLink fieldCode="AR" term="%22Cheng%2C+Khley%22">Cheng, Khley</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chengkhley@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Heng%2C+Socheata%22">Heng, Socheata</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> socheataheng3579@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Tieng%2C+Siteng%22">Tieng, Siteng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tiengsiteng@gmail.com</i><br /><searchLink fieldCode="AR" term="%22David%2C+Ford%22">David, Ford</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> forddavidaus@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Dine%2C+Sarah%22">Dine, Sarah</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> sarah.dine@lspm.cnrs.fr</i><br /><searchLink fieldCode="AR" term="%22Haddad%2C+Oriana%22">Haddad, Oriana</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> oriana.haddad@cnrs.fr</i><br /><searchLink fieldCode="AR" term="%22Colbeau-Justin%2C+Christophe%22">Colbeau-Justin, Christophe</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> christophe.colbeau-justin@universite-paris-saclay.fr</i><br /><searchLink fieldCode="AR" term="%22Traore%2C+Mamadou%22">Traore, Mamadou</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> mamadou.traore@lspm.cnrs.fr</i><br /><searchLink fieldCode="AR" term="%22Kanaev%2C+Andrei%22">Kanaev, Andrei</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> andrei.kanaev@lspm.cnrs.fr</i>
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. May2024, Vol. 14 Issue 9, p765. 18p.
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  Data: <searchLink fieldCode="DE" term="%22Photocatalysis%22">Photocatalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+oxides%22">Metallic oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Adsorption+%28Chemistry%29%22">Adsorption (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Industrial+wastes%22">Industrial wastes</searchLink><br /><searchLink fieldCode="DE" term="%22Tungsten+trioxide%22">Tungsten trioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Visible+spectra%22">Visible spectra</searchLink><br /><searchLink fieldCode="DE" term="%22Factories%22">Factories</searchLink><br /><searchLink fieldCode="DE" term="%22Methylene+blue%22">Methylene blue</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A mixed metal oxide W-TiO2 nanopowder photocatalyst was prepared by using the sol–gel method with a broad range of elemental compositions x = CW/(CW + CTi), including TiO2 and WO3. The material was structurally characterized and evaluated in adsorption and photocatalytic processes by testing its removal capacity of a representative pollutant methylene blue (MB) in aqueous solutions and under UV-A and sunlight illuminations. The nanopowders appeared to be more effective adsorbents than pure TiO2 and WO3 materials, showing a maximum at 15 mol% W, which was set as the tungsten solubility limit in anatase titania. At the same time, the photocatalytic decomposition of MB peaked at 2 mol% W. The examination of different compositions showed that the most effective MB removal took place at 15 mol% W, which was attributed to the combined action of adsorption and heterogeneous photocatalysis. Moreover, MB decomposition under sunlight was stronger than under UV-A, suggesting photocatalyst activation by visible light. The pollutant removal efficiency of the material with 15 mol% W was enhanced by a factor of ~10 compared to pure TiO2 at the beginning of the process, which shows its high potential for use in depollution processes in emergency cases of a great pollutant leak. As a result, a Wx=0.15-TiO2 catalyst could be of high interest for wastewater purification in industrial plants. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI 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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    Identifiers:
      – Type: doi
        Value: 10.3390/nano14090765
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 18
        StartPage: 765
    Subjects:
      – SubjectFull: Photocatalysis
        Type: general
      – SubjectFull: Metallic oxides
        Type: general
      – SubjectFull: Adsorption (Chemistry)
        Type: general
      – SubjectFull: Industrial wastes
        Type: general
      – SubjectFull: Tungsten trioxide
        Type: general
      – SubjectFull: Visible spectra
        Type: general
      – SubjectFull: Factories
        Type: general
      – SubjectFull: Methylene blue
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      – TitleFull: Mixed Metal Oxide W-TiO 2 Nanopowder for Environmental Process: Synergy of Adsorption and Photocatalysis.
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              Text: May2024
              Type: published
              Y: 2024
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