首页|Preparation of magnetic carbon nanofibers derived from bacterial cellulose alloyed with magnetic fluid
Preparation of magnetic carbon nanofibers derived from bacterial cellulose alloyed with magnetic fluid
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NSTL
Elsevier
Magnetic carbon nanofibers (CNFs) carbonized at different temperatures were prepared from bacterial cellulose (BC) alloyed with magnetic fluid (MF) or Fe3O4 powder to facilitate the efficient use of biomass resources. The CNFs alloyed with magnetic nanoparticles demonstrated high saturation magnetizations and coercivities up to a carbonization temperature of 800 degrees C. Iodine-treated BC alloyed with magnetic nanoparticles showed a substantial increase in the char yields with lower saturation magnetizations compared to the iodine-untreated BC. The analysis of X-ray diffraction results implies that the magnetic properties are related to the types and relative amounts of iron and iron-containing compounds, and the existence of amorphous magnetic nanoparticles in the CNFs. Scanning electron microscopy results indicated that the surfaces of the MF-alloyed CNFs possessed a fused fibrous texture with voids, and the magnetic CNFs without iodine treatment featured crystalline nanoparticles. The MF-alloyed CNFs with iodine treatment demonstrated the maximum surface area and pore volume, while the MF-alloyed CNFs without iodine treatment mainly contained mesopores.
NSTL
Elsevier
