One-step synthesis, electromagnetic and microwave absorbing properties of α-FeOOH/polypyrrole nanocomposites
Source abstract
Abstract
Abstract One-step synthesis of α-FeOOH/polypyrrole (PPy) nanocomposites is reported for the first time via a facile one-step chemical method in the presence of OH − , Fe 2+ , Fe 3+ and pyrrole monomer. α-FeOOH nanorods are in situ formed in PPy matrix and the content of α-FeOOH nanorods increases with decreasing the molar ratio of pyrrole to Fe 2+ ([Py]/[Fe 2+ ] ratio). The electromagnetic and microwave absorbing properties of the nanocomposites are investigated as a function of the [Py]/[Fe 2+ ] ratio. The results show that the PPy nanocomposites exhibit good conductivity (up to 16.10 S/cm) and antiferromagnetic behavior. The reflection loss evaluation based on the absorbing wall theory at the thickness of 2 mm shows that the nanocomposite at [Py]/[Fe 2+ ] = 1.0 exhibits the best microwave absorbing property in the 2–18 GHz. And the corresponding reflection frequency range under −10 dB and −5 dB is 4.2 GHz and 5.8 GHz, respectively.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Conducting polymers and applications · Advanced Antenna and Metasurface Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Nalwa · 2004 · vol. 2
2. Characteristics of polypyrrole electrodeposited onto roughened substrates composed of gold–silver bimetallic nanoparticles10.1002/pola.21385 ↗
3. Fabrication and characteristic of conductive and ferromagnetic hollow composite microcapsules10.1016/j.matlet.2006.10.031 ↗
4. Gas and humidity sensors based on iron oxide–polypyrrole nanocomposites10.1016/S0925-4005(01)00966-2 ↗
5. Study of the primary sensitivity of polypyrrole/r-Fe2O3 to toxic gases10.1016/j.matchemphys.2005.08.062 ↗
6. Electrically conductive polymer nanocomposites as deformation sensors10.1016/S0266-3538(00)00175-5 ↗
7. Polypyrrole composites for shielding applications10.1016/j.synthmet.2005.05.011 ↗
8. Polypyrrole-Fe2O3 nanohybrid materials for electrochemical storage10.1007/s10008-006-0161-8 ↗
9. Synthesis and characterization of carbon nanotube/polypyrrole core–shell nanocomposites via in situ inverse microemulsion10.1002/pola.21114 ↗
10. A new polypyrrole/maghemite hybrid as a lithium insertion electrode10.1016/S1388-2481(02)00250-3 ↗
11. Enhancement of magnetic losses in hybrid polymer composites with MnZn-ferrite and conductive fillers10.1007/s10853-007-2081-0 ↗
12. Synthesis of electromagnetic functionalized barium ferrite nanoparticles embedded in polypyrrole10.1021/jp710259v ↗
13. Synthesis of electromagnetic functionalized nickel/polypyrrole core/shell composites10.1021/jp804327k ↗
14. Facile synthesis and properties of ZnFe2O4 and ZnFe2O4/polypyrrole core–shell nanoparticles10.1016/j.solidstatesciences.2009.04.014 ↗
15. Magnetic properties of amorphous β-FeOOH nanowire arrays10.1016/j.jmmm.2006.01.006 ↗
16. Synthesis of single-crystalline alpha-FeOOH nanorods with semi-hard magnetic property10.1016/j.matlet.2007.01.094 ↗
17. Magnetic-field-induced nematic-columnar phase transition in aqueous suspensions of goethite (α-FeOOH) nanorods10.1103/PhysRevLett.93.267801 ↗
18. Adhesion of bacterial exopolymers to α-FeOOH: inner-sphere complexation of phosphodiester groups10.1021/la048597+ ↗
19. Enthalpy of water adsorption and surface enthalpy of goethite (α-FeOOH) and hematite (α-Fe2O3)10.1021/cm0623817 ↗
20. Mesostructured iron oxyhydroxides. 1. Synthesis, local structure, and magnetism10.1021/cm991211+ ↗
21. Complex permittivity, permeability, and X-band microwave absorption of CaCoTi ferrite composites10.1063/1.373079 ↗
22. Novel Electromagnetic functionalized γ-Fe2O3/polypyrrole composite nanostructures with high conductivity10.1002/pola.23500 ↗
23. Self-formation and anisotropic electrical conduction of polypyrrole-microtubes10.1246/cl.2001.816 ↗
24. Effects of temperature and iron(III) concentration on the hydrolytic formation of iron(III) oxyhydroxides and oxides10.2136/sssaj1980.03615995004400050043x ↗
25. Physical properties of aqueous suspensions of goethite (alpha-FeOOH) nanorods – Part I: In the isotropic phase10.1140/epje/i2003-10078-6 ↗
26. Facile route to α- FeOOH and α-Fe2O3 nanorods and magnetic property of α-Fe2O3 nanorods10.1021/ic060097b ↗
27. Nanomaterials: a membrane-based synthetic approach10.1126/science.266.5193.1961 ↗
28. Microwave absorption, reflection and EMI shielding of PU–PANI composite10.1016/j.actamat.2008.09.018 ↗
29. Decibels and decilogs when measuring the intensity of radio interference10.1023/A:1015180203875 ↗
30. Microwave absorbing properties of the Archimedean plane spiral antenna array/epoxy resin composites10.1016/j.mseb.2007.06.006 ↗
31. The study on the new microwave materials based on the conducting polymers
32. Microwave transmission, reflection and dielectric properties of conducting and semiconducting polypyrrole films and powders10.1007/BF00354252 ↗