View in EDS

Tailor-made core/shell/shell-like Fe3O4@SiO2@PPy composites with prominent microwave absorption performance.

Saved in:
Bibliographic Details
Title: Tailor-made core/shell/shell-like Fe3O4@SiO2@PPy composites with prominent microwave absorption performance.
Authors: Liu, Tiansheng1, Liu, Na1, Zhai, Shangru1 zhaisrchem@163.com, Gao, Shengshuai1, Xiao, Zuoyi1, An, Qingda1 anqingdachem@163.com, Yang, Dongjiang1,2 d.yang@qdu.edu.cn
Source: Journal of Alloys & Compounds. Mar2019, Vol. 779, p831-843. 13p.
Subjects: Iron oxides, Metallic composites, Electromagnetic waves, Microemulsions, Functional groups
Abstract: Abstract Well-ordered core/shell/shell-like Fe 3 O 4 @SiO 2 @PPy microspheres with prominent electromagnetic microwave absorption performance were successfully obtained by microemulsion polymerization method. The morphology, crystal form, functional group, magnetism and microwave absorption properties were investigated. The tailored shell thickness can be tuned from 20 to 60 nm (including SiO 2 layer) via changing the molar ratio of Fe 3 O 4 @SiO 2 to Pyrrole. The absorption peak positions gradually move to low frequency with increment of coating thicknesses. The minimum RL reached −40.9 dB at 6 GHz with the coating thickness of 5 mm. The effective absorption bandwidth could reach 6.88 GHz from 11.12 to 18 GHz, completely covering the whole K (12–18 GHz) band. Meanwhile, it showed excellent wave absorption in 4.4–18 GHz with different coating thickness. The perfect electromagnetic wave absorption properties could be attributed to the dielectric loss from the special core/shell/shell microstructure and natural resonance from the Fe 3 O 4 microspheres. These newly prepared Fe 3 O 4 @SiO 2 @PPy microspheres might be considered as prospective nominees for highly efficient microwave absorption materials with tailored nanostructures. Graphical abstract Image 1 Highlights • Fe 3 O 4 @SiO 2 @PPy composites were fabricated by microemulsion polymerization method. • Fe 3 O 4 @SiO 2 @PPy composites were obtained via a three-step approach. • Plausible mechanisms governing the EM characteristic of composite were discussed. • Minimum RL was −40.9 dB at 6 GHz with a thickness of 5 mm. • The effective absorption bandwidth could reach 6.88 GHz from 11.12 to 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.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 134596330
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Tailor-made core/shell/shell-like Fe3O4@SiO2@PPy composites with prominent microwave absorption performance.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Tiansheng%22">Liu, Tiansheng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Na%22">Liu, Na</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhai%2C+Shangru%22">Zhai, Shangru</searchLink><relatesTo>1</relatesTo><i> zhaisrchem@163.com</i><br /><searchLink fieldCode="AR" term="%22Gao%2C+Shengshuai%22">Gao, Shengshuai</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Xiao%2C+Zuoyi%22">Xiao, Zuoyi</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22An%2C+Qingda%22">An, Qingda</searchLink><relatesTo>1</relatesTo><i> anqingdachem@163.com</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Dongjiang%22">Yang, Dongjiang</searchLink><relatesTo>1,2</relatesTo><i> d.yang@qdu.edu.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. Mar2019, Vol. 779, p831-843. 13p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Iron+oxides%22">Iron oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+composites%22">Metallic composites</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+waves%22">Electromagnetic waves</searchLink><br /><searchLink fieldCode="DE" term="%22Microemulsions%22">Microemulsions</searchLink><br /><searchLink fieldCode="DE" term="%22Functional+groups%22">Functional groups</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract Well-ordered core/shell/shell-like Fe 3 O 4 @SiO 2 @PPy microspheres with prominent electromagnetic microwave absorption performance were successfully obtained by microemulsion polymerization method. The morphology, crystal form, functional group, magnetism and microwave absorption properties were investigated. The tailored shell thickness can be tuned from 20 to 60 nm (including SiO 2 layer) via changing the molar ratio of Fe 3 O 4 @SiO 2 to Pyrrole. The absorption peak positions gradually move to low frequency with increment of coating thicknesses. The minimum RL reached −40.9 dB at 6 GHz with the coating thickness of 5 mm. The effective absorption bandwidth could reach 6.88 GHz from 11.12 to 18 GHz, completely covering the whole K (12–18 GHz) band. Meanwhile, it showed excellent wave absorption in 4.4–18 GHz with different coating thickness. The perfect electromagnetic wave absorption properties could be attributed to the dielectric loss from the special core/shell/shell microstructure and natural resonance from the Fe 3 O 4 microspheres. These newly prepared Fe 3 O 4 @SiO 2 @PPy microspheres might be considered as prospective nominees for highly efficient microwave absorption materials with tailored nanostructures. Graphical abstract Image 1 Highlights • Fe 3 O 4 @SiO 2 @PPy composites were fabricated by microemulsion polymerization method. • Fe 3 O 4 @SiO 2 @PPy composites were obtained via a three-step approach. • Plausible mechanisms governing the EM characteristic of composite were discussed. • Minimum RL was −40.9 dB at 6 GHz with a thickness of 5 mm. • The effective absorption bandwidth could reach 6.88 GHz from 11.12 to 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=134596330
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jallcom.2018.11.167
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 831
    Subjects:
      – SubjectFull: Iron oxides
        Type: general
      – SubjectFull: Metallic composites
        Type: general
      – SubjectFull: Electromagnetic waves
        Type: general
      – SubjectFull: Microemulsions
        Type: general
      – SubjectFull: Functional groups
        Type: general
    Titles:
      – TitleFull: Tailor-made core/shell/shell-like Fe3O4@SiO2@PPy composites with prominent microwave absorption performance.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Liu, Tiansheng
      – PersonEntity:
          Name:
            NameFull: Liu, Na
      – PersonEntity:
          Name:
            NameFull: Zhai, Shangru
      – PersonEntity:
          Name:
            NameFull: Gao, Shengshuai
      – PersonEntity:
          Name:
            NameFull: Xiao, Zuoyi
      – PersonEntity:
          Name:
            NameFull: An, Qingda
      – PersonEntity:
          Name:
            NameFull: Yang, Dongjiang
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 30
              M: 03
              Text: Mar2019
              Type: published
              Y: 2019
          Identifiers:
            – Type: issn-print
              Value: 09258388
          Numbering:
            – Type: volume
              Value: 779
          Titles:
            – TitleFull: Journal of Alloys & Compounds
              Type: main
ResultId 1