Synthesis of hollow carbonyl iron microspheres via pitting corrosion method and their microwave absorption properties
Source abstract
Abstract
In this paper, we report a new method to prepare hollow carbonyl iron microspheres, which is called pitting corrosion method. The comparison of the morphology, specific surface area and apparent density of the initial and pitting corroded carbonyl iron microspheres demonstrate that the pitting corroded carbonyl iron has a hollow structure. The pitting corrosion process is uncovered through the concentration change of ferrous ion in the reaction solution and the TEM images with different pitting corrosion time. The formation mechanism of hollow microspheres via pitting corrosion is analyzed. Furthermore, this pitting corrosion method can also be used to prepare other hollow metal particles, such as Ni, Co, and Cu particles. The electromagnetic parameters of the samples before and after pitting corrosion are measured. The calculated reflection loss of the pitting corroded sample for single layer of 0.5 mm or 1.0 mm thickness at 2-18 GHz is much better than that of the initial one. The mechanism of the improvement of the microwave absorption properties is discussed. (c) 2013 Elsevier B.V. All rights reserved.
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Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Fabrication of hollow palladium spheres and their successful application to the recyclable heterogeneous catalyst for Suzuki coupling reactions10.1021/ja026032z ↗
2. Morphology evolution of Cu2O from octahedra to hollow structures10.1021/cg9008637 ↗
3. Hollow silica nanocontainers as drug delivery vehicles10.1021/la701688t ↗
4. Fabrication of hollow poly(lactic acid) microcapsules from microbubble templates10.1021/jp9053956 ↗
5. Periodic mesoporous organosilica hollow spheres with tunable wall thickness10.1021/ja0607537 ↗
6. The preparation of magnetic nanoparticles for applications in biomedicine10.1088/0022-3727/36/13/202 ↗
7. Inorganic hollow nanoparticles and nanotubes in nanomedicine. Part 2. Imaging, diagnostic, and therapeutic applications10.1016/j.drudis.2007.06.012 ↗
8. Construction of hollow and mesoporous ZnO microsphere: a facile synthesis and sensing property10.1021/am3012966 ↗
9. In2O3 hollow microspheres: synthesis from designed In(OH)3 precursors and applications in gas sensors and photocatalysis10.1021/la061844k ↗
10. Self-assembled growth of hollow spheres with octahedron-like Co nanocrystals via one-pot solution fabrication10.1021/jp0775404 ↗
11. One-pot solution synthesis of cubic cobalt nanoskeletons10.1002/adma.200801309 ↗
12. Dissolving Ag from Au–Ag Alloy nanoboxes with H2O2: a method for both tailoring the optical properties and measuring the H2O2 concentration10.1021/jp100354z ↗
13. General preparation for Pt-based alloy nanoporous nanoparticles as potential nanocatalysts10.1038/srep00037 ↗
14. Rational synthesis of Pt spheres with hollow interior and nanosponge shell using silica particles as template10.1039/c0cc05233g ↗
15. Ni1−xPtx (x=0–0.12) hollow spheres as catalysts for hydrogen generation from ammonia borane10.1021/ic061712e ↗
16. Hollow nanostructures of platinum with controllable dimensions can be synthesized by templating against selenium nanowires and colloids10.1021/ja0379722 ↗
17. Fabrication of cubic nanocages and nanoframes by dealloying Au/Ag alloy nanoboxes with an aqueous etchant based on Fe(NO3)3 or NH4OH10.1021/nl070838l ↗
18. Faceting of nanocrystals during chemical transformation: from solid silver spheres to hollow gold octahedra10.1021/ja0646038 ↗
19. Pt hollow nanospheres: facile synthesis and enhanced electrocatalysts10.1002/anie.200352956 ↗
20. Microwave absorption enhancement and complex permittivity and permeability of Fe encapsulated within carbon nanotubes10.1002/adma.200306460 ↗
21. A two-layer dielectric absorber covering a wide frequency range10.1016/j.ceramint.2005.09.002 ↗
22. A review and analysis of microwave absorption in polymer composites filled with carbonaceous particles10.1063/1.3688435 ↗
23. Microwave absorption performance of magnetic Fe–Ni–P nanoparticles electrolessly plated on hollow glass microspheres10.1016/j.matchemphys.2012.02.055 ↗
24. Microwave complex permeability of planar anisotropy carbonyl-iron particles10.1016/j.jallcom.2010.11.074 ↗
25. Dielectric properties of carbon black and carbonyl iron filled epoxy–silicone resin coating10.1007/s10853-009-4173-5 ↗
26. Study on microwave absorbing properties of carbonyl-iron composite coating based on PVC and Al sheet10.1016/j.apsusc.2012.02.082 ↗
27. Hollow glass microspheres coated with CoFe2O4 and its microwave absorption property10.1016/j.jmmm.2007.03.201 ↗
28. Electromagnetic and microwave absorption properties of Fe3O4 magnetic films plated on hollow glass spheres10.1016/j.jmmm.2006.11.128 ↗
29. Microwave absorption properties of double-layer absorbers made of NiCoZn ferrites and hollow glass microspheres electroless plated with FeCoNiB10.1016/j.jmmm.2008.10.043 ↗
30. Synthesis of hollow iron nanoframes10.1021/ja070667m ↗
31. Marcus · 2011
32. Breakdown of passivity and localized corrosion: theoretical concepts and fundamental experimental results10.1002/maco.19840351002 ↗
33. Non-aqueous synthesis of mesostructured tin dioxide10.1039/b206002g ↗
34. Growth of corrosion pits on stainless steel in chloride solution containing dilute sulphate10.1016/0010-938X(92)90191-5 ↗
35. The nucleation and growth of corrosion pits on stainless steel10.1016/0010-938X(93)90133-2 ↗
36. Burgess · 1978
37. Srivastava · 2011
38. Particle size influence to the microwave properties of iron based magnetic particulate composites10.1016/j.jmmm.2004.07.045 ↗
39. Microwave absorption enhancement of porous carbon fibers compared with carbon nanofibers10.1021/jp300050u ↗