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Designed construction of Ti3C2Tx@PPY composites with enhanced microwave absorption performance.

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Title: Designed construction of Ti3C2Tx@PPY composites with enhanced microwave absorption performance.
Authors: Liu, Tiansheng1 (AUTHOR), Liu, Na1 (AUTHOR), An, Qingda1 (AUTHOR) anqingdachem@163.com, Xiao, Zuoyi1 (AUTHOR), Zhai, Shangru1 (AUTHOR) zhaisrchem@163.com, Li, Zhongcheng2 (AUTHOR)
Source: Journal of Alloys & Compounds. Sep2019, Vol. 802, p445-457. 13p.
Subjects: Composite construction, Microspheres, Absorption, Impedance matching, Microwave materials, Microwaves, Microemulsions, Heterojunctions
Abstract: The unique features of 2D layered structure, native defects and abundant functional groups provide special peculiarities for exploring Ti 3 C 2 T x MXenes in microwave absorption field. Nonetheless, both bad conductivity and poor impedance matching of Ti 3 C 2 T x MXenes lead to relatively poor EM absorption performance. Herein, by modifying Ti 3 C 2 T x MXenes with conductive PPy microspheres, a new core-shell like delaminated structure composites were fabricated for significant enhancement of absorption performance. It demonstrated that the obtained Ti 3 C 2 T x @PPy composites showed excellent microwave absorption performance due to synergistic effect between Ti 3 C 2 T x and PPy microspheres. The 10 wt% Ti 3 C 2 T x @PPy composites in wax matrix displayed a minimum reflection loss (RL) of −49.5 dB at 7.6 GHz with 3.6 mm in thickness, and the effective absorption bandwidth was 5.14 GHz from 6.44 to 11.58 GHz. The widest effective absorption bandwidth was 6.63 GHz from 8.55 to 15.18 GHz, the RL reached −42.6 dB in 12.4 GHz at only 2.7 mm matching thickness. More importantly, the composites can cover 4–18 GHz by simply adjusting matching thickness of 2–5.5 mm. The fantastic absorption performance could be ascribed to the unique properties of Ti 3 C 2 T x MXenes and heterojunction in Ti 3 C 2 T x @PPy, which might be a promising material in microwave absorption applied aspects. Image 1 • Ti 3 C 2 T x @PPy composites were fabricated by microemulsion polymerization method. • Plausible mechanisms governing the EM characteristic of composite were discussed. • Minimum RL was −49.5 dB at 7.6 GHz with a thickness of only 3.6 mm. • An effective absorption bandwidth could reach 6.63 GHz from 8.55 to 15.18 GHz. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Alloys & Compounds 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.)
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DbLabel: Engineering Source
An: 137372681
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PubTypeId: academicJournal
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  Group: Ti
  Data: Designed construction of Ti3C2Tx@PPY composites with enhanced microwave absorption performance.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Tiansheng%22">Liu, Tiansheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Na%22">Liu, Na</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22An%2C+Qingda%22">An, Qingda</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> anqingdachem@163.com</i><br /><searchLink fieldCode="AR" term="%22Xiao%2C+Zuoyi%22">Xiao, Zuoyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhai%2C+Shangru%22">Zhai, Shangru</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhaisrchem@163.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Zhongcheng%22">Li, Zhongcheng</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. Sep2019, Vol. 802, p445-457. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Composite+construction%22">Composite construction</searchLink><br /><searchLink fieldCode="DE" term="%22Microspheres%22">Microspheres</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption%22">Absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Impedance+matching%22">Impedance matching</searchLink><br /><searchLink fieldCode="DE" term="%22Microwave+materials%22">Microwave materials</searchLink><br /><searchLink fieldCode="DE" term="%22Microwaves%22">Microwaves</searchLink><br /><searchLink fieldCode="DE" term="%22Microemulsions%22">Microemulsions</searchLink><br /><searchLink fieldCode="DE" term="%22Heterojunctions%22">Heterojunctions</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The unique features of 2D layered structure, native defects and abundant functional groups provide special peculiarities for exploring Ti 3 C 2 T x MXenes in microwave absorption field. Nonetheless, both bad conductivity and poor impedance matching of Ti 3 C 2 T x MXenes lead to relatively poor EM absorption performance. Herein, by modifying Ti 3 C 2 T x MXenes with conductive PPy microspheres, a new core-shell like delaminated structure composites were fabricated for significant enhancement of absorption performance. It demonstrated that the obtained Ti 3 C 2 T x @PPy composites showed excellent microwave absorption performance due to synergistic effect between Ti 3 C 2 T x and PPy microspheres. The 10 wt% Ti 3 C 2 T x @PPy composites in wax matrix displayed a minimum reflection loss (RL) of −49.5 dB at 7.6 GHz with 3.6 mm in thickness, and the effective absorption bandwidth was 5.14 GHz from 6.44 to 11.58 GHz. The widest effective absorption bandwidth was 6.63 GHz from 8.55 to 15.18 GHz, the RL reached −42.6 dB in 12.4 GHz at only 2.7 mm matching thickness. More importantly, the composites can cover 4–18 GHz by simply adjusting matching thickness of 2–5.5 mm. The fantastic absorption performance could be ascribed to the unique properties of Ti 3 C 2 T x MXenes and heterojunction in Ti 3 C 2 T x @PPy, which might be a promising material in microwave absorption applied aspects. Image 1 • Ti 3 C 2 T x @PPy composites were fabricated by microemulsion polymerization method. • Plausible mechanisms governing the EM characteristic of composite were discussed. • Minimum RL was −49.5 dB at 7.6 GHz with a thickness of only 3.6 mm. • An effective absorption bandwidth could reach 6.63 GHz from 8.55 to 15.18 GHz. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Alloys & Compounds 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.jallcom.2019.06.243
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 445
    Subjects:
      – SubjectFull: Composite construction
        Type: general
      – SubjectFull: Microspheres
        Type: general
      – SubjectFull: Absorption
        Type: general
      – SubjectFull: Impedance matching
        Type: general
      – SubjectFull: Microwave materials
        Type: general
      – SubjectFull: Microwaves
        Type: general
      – SubjectFull: Microemulsions
        Type: general
      – SubjectFull: Heterojunctions
        Type: general
    Titles:
      – TitleFull: Designed construction of Ti3C2Tx@PPY composites with enhanced microwave absorption performance.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Liu, Tiansheng
      – PersonEntity:
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            NameFull: Liu, Na
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            NameFull: An, Qingda
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            NameFull: Xiao, Zuoyi
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            NameFull: Zhai, Shangru
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            NameFull: Li, Zhongcheng
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          Dates:
            – D: 25
              M: 09
              Text: Sep2019
              Type: published
              Y: 2019
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              Value: 09258388
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              Value: 802
          Titles:
            – TitleFull: Journal of Alloys & Compounds
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