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

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

Author(s)Mun, Sung Phil; Cai, Zhiyong; Zhang, Jilei

Publication Year: 2013  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4706-2B

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

Publication Review Process: Formally Refereed

File size: 589 kb(s)

Date posted: 09/25/2014

This publication is also viewable on Treesearch:  view
RITS Product ID: 69480
Current FPL Scientist associated with this product
Cai, Zhiyong
Supervisory Research Materials Engineer
  

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