Electromagnetic Functional Urchin-Like Hollow Carbon Spheres Carbonized by Polyaniline Micro/Nanostructures Containing FeCl3 as a Precursor
✍ Scribed by Ying Zhu; Jiuming Li; Meixiang Wan; Lei Jiang
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 615 KB
- Volume
- 2009
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Abstract
Hollow, urchin‐like carbon spheres with electromagnetic function were prepared by a carbonization process at 1200 °C under an argon atmosphere by using template‐free‐synthesized, urchin‐like, hollow spheres of polyaniline containing FeCl~3~ as the precursors. The resulting hollow, urchin‐like carbon spheres not only have a high conductivity at room temperature (≈12.3 S cm^–1^), but they also exhibit ferromagnetic properties. The high conductivity at room temperature results from the graphite‐like structure, whereas α‐Fe or γ‐Fe~2~O~3~ nanoparticles produced by FeCl~3~ during the carbonization at 1200 °C are attributed to the ferromagnetic properties. Interestingly, the electromagnetic functional hollowurchin‐like carbon spheres could be used as a reversible dye adsorbent. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)