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Photocatalytic degradation of dimethyl phthalate in an aqueous solution with Pt-doped TiO2-coated magnetic PMMA microspheres

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Title: Photocatalytic degradation of dimethyl phthalate in an aqueous solution with Pt-doped TiO2-coated magnetic PMMA microspheres
Authors: Chen, Yi-Hung1 yhchen1@ntut.edu.tw, Chen, Li-Lin2, Shang, Neng-Chou3
Source: Journal of Hazardous Materials. Dec2009, Vol. 172 Issue 1, p20-29. 10p.
Subjects: Photocatalysis, Phthalate esters, Titanium dioxide, Polymethylmethacrylate, Microspheres, Methyl methacrylate, Platinum, Chemical decomposition, Organic compounds removal (Water purification), Ultraviolet water treatment
Abstract: Abstract: This study investigates the photocatalytic degradation of dimethyl phthalate (DMP) with both the titanium dioxide-coated magnetic poly(methyl methacrylate) (TiO2/mPMMA) and platinum-doped TiO2/mPMMA (Pt–TiO2/mPMMA) microspheres. The TiO2/mPMMA and Pt–TiO2/mPMMA microspheres are employed as novel photocatalysts that offer high photocatalytic activity, magnetic separability and good durability. The photocatalytic experiments of DMP under various conditions are conducted to examine the effects of the initial DMP concentration, photocatalyst dosage, UV radiation intensity and Pt doping content on the degradation of DMP. In addition, the correlations of the photocatalytic kinetics and quantum yield for DMP removal are proposed associated with the system parameters. According to the experimental results, there exists a distinct relationship between the reduction percentages of total organic carbons and DMP. Furthermore, the photodegradation mechanism of DMP in the photocatalytic process is established based on the identification of the intermediates. Moreover, the good repeatability of the photocatalytic performance with the use of the Pt–TiO2/mPMMA microspheres has also been demonstrated in the multi-run experiments. Therefore the Pt–TiO2/mPMMA microspheres are considered as a practical and promising photocatalyst in a suspension reaction system and they can be effectively recovered after use. This study provides useful information about the applications of the TiO2/mPMMA and Pt–TiO2/mPMMA microspheres for the photodegradation of DMP. [Copyright &y& Elsevier]
Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 44584395
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Photocatalytic degradation of dimethyl phthalate in an aqueous solution with Pt-doped TiO<subscript>2</subscript>-coated magnetic PMMA microspheres
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Yi-Hung%22">Chen, Yi-Hung</searchLink><relatesTo>1</relatesTo><i> yhchen1@ntut.edu.tw</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Li-Lin%22">Chen, Li-Lin</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Shang%2C+Neng-Chou%22">Shang, Neng-Chou</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Hazardous+Materials%22">Journal of Hazardous Materials</searchLink>. Dec2009, Vol. 172 Issue 1, p20-29. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Photocatalysis%22">Photocatalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Phthalate+esters%22">Phthalate esters</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+dioxide%22">Titanium dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Polymethylmethacrylate%22">Polymethylmethacrylate</searchLink><br /><searchLink fieldCode="DE" term="%22Microspheres%22">Microspheres</searchLink><br /><searchLink fieldCode="DE" term="%22Methyl+methacrylate%22">Methyl methacrylate</searchLink><br /><searchLink fieldCode="DE" term="%22Platinum%22">Platinum</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+decomposition%22">Chemical decomposition</searchLink><br /><searchLink fieldCode="DE" term="%22Organic+compounds+removal+%28Water+purification%29%22">Organic compounds removal (Water purification)</searchLink><br /><searchLink fieldCode="DE" term="%22Ultraviolet+water+treatment%22">Ultraviolet water treatment</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: This study investigates the photocatalytic degradation of dimethyl phthalate (DMP) with both the titanium dioxide-coated magnetic poly(methyl methacrylate) (TiO2/mPMMA) and platinum-doped TiO2/mPMMA (Pt–TiO2/mPMMA) microspheres. The TiO2/mPMMA and Pt–TiO2/mPMMA microspheres are employed as novel photocatalysts that offer high photocatalytic activity, magnetic separability and good durability. The photocatalytic experiments of DMP under various conditions are conducted to examine the effects of the initial DMP concentration, photocatalyst dosage, UV radiation intensity and Pt doping content on the degradation of DMP. In addition, the correlations of the photocatalytic kinetics and quantum yield for DMP removal are proposed associated with the system parameters. According to the experimental results, there exists a distinct relationship between the reduction percentages of total organic carbons and DMP. Furthermore, the photodegradation mechanism of DMP in the photocatalytic process is established based on the identification of the intermediates. Moreover, the good repeatability of the photocatalytic performance with the use of the Pt–TiO2/mPMMA microspheres has also been demonstrated in the multi-run experiments. Therefore the Pt–TiO2/mPMMA microspheres are considered as a practical and promising photocatalyst in a suspension reaction system and they can be effectively recovered after use. This study provides useful information about the applications of the TiO2/mPMMA and Pt–TiO2/mPMMA microspheres for the photodegradation of DMP. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. 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:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jhazmat.2009.06.122
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 20
    Subjects:
      – SubjectFull: Photocatalysis
        Type: general
      – SubjectFull: Phthalate esters
        Type: general
      – SubjectFull: Titanium dioxide
        Type: general
      – SubjectFull: Polymethylmethacrylate
        Type: general
      – SubjectFull: Microspheres
        Type: general
      – SubjectFull: Methyl methacrylate
        Type: general
      – SubjectFull: Platinum
        Type: general
      – SubjectFull: Chemical decomposition
        Type: general
      – SubjectFull: Organic compounds removal (Water purification)
        Type: general
      – SubjectFull: Ultraviolet water treatment
        Type: general
    Titles:
      – TitleFull: Photocatalytic degradation of dimethyl phthalate in an aqueous solution with Pt-doped TiO2-coated magnetic PMMA microspheres
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Chen, Yi-Hung
      – PersonEntity:
          Name:
            NameFull: Chen, Li-Lin
      – PersonEntity:
          Name:
            NameFull: Shang, Neng-Chou
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          Dates:
            – D: 15
              M: 12
              Text: Dec2009
              Type: published
              Y: 2009
          Identifiers:
            – Type: issn-print
              Value: 03043894
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            – Type: volume
              Value: 172
            – Type: issue
              Value: 1
          Titles:
            – TitleFull: Journal of Hazardous Materials
              Type: main
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