Magnetic separation of carbon-encapsulated Fe nanoparticles from thermally-treated wood char

Sung Phil Mun; Zhiyong Cai; Jilei Zhang

doi:10.1016/j.matlet.2013.01.006

Treesearch

Magnetic separation of carbon-encapsulated Fe nanoparticles from thermally-treated wood char

Formally Refereed

Authors:

Sung Phil Mun, Zhiyong Cai, Jilei Zhang

Year:

2013

Type:

Scientific Journal

Station:

Forest Products Laboratory

DOI:

https://doi.org/10.1016/j.matlet.2013.01.006

Source:

Materials Letters, 96, 2013; pp. 5-7.

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Abstract

Wood char,a by-product from the fast-pyrolysis process of southern yellow pine wood for bio-oil production, was carbonized with Fenano particles (FeNPs) as a catalyst to prepare carbon-encapsulated Fe nanoparticles. A magnetic separation method was tested to isolate carbon-encapsulated Fe nano particles from the carbonized char. X-ray diffraction pattern clearly shows that Fe-containing materials were completely separated from the carbonized wood char mixture using a magnet. The amorphous carbon in the material which adhered to the magnetic bar was significantly decreased in comparison with the non-adhered material. Carbon graphitic layers encapsulated FeNPs were observed in the adhered material through high-resolution transmission electron microscopy. In addition, many long and tangled-multi-layered graphitic carbon structures grew from the surface of carbon-encapsulated Fe nanoparticles.

Keywords

Wood char, Fe nanoparticles, Carbon-encapsulated Fe nanoparticles, Magnetic separation, X-ray diffraction, High-resolution transmission electron microscopy

Citation

Mun, Sung Phil; Cai, Zhiyong; Zhang, Jilei. 2013. Magnetic separation of carbon-encapsulated Fe nanoparticles from thermally-treated wood char. Materials Letters, 96, 2013; pp. 5-7.