Journal
CARBON
Volume 44, Issue 10, Pages 1954-1957Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2006.02.013
Keywords
activated carbon; magnetic properties
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We present a simple and versatile route to prepare magnetically separable porous carbons from commercial activated carbons. The magnetic properties of the composite are provided by nickel nanoparticles (around 8-15 nm), which are produced within the porous network by means of the thermal treatment at 600 degrees C of an activated carbon impregnated with a nickel salt and sucrose. This synthetic strategy allows the magnetic nanoparticles to be protected against acid attack. The magnetic composite thus obtained exhibits a large surface area and a high pore volume. An important advantage of this composite is that exhibits, at room temperature, low coercivity (similar to 0.1 kOe), allowing it to be easily manipulated by means of low external magnetic fields. (c) 2006 Elsevier Ltd. All rights reserved.
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