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Facile method to prepare magnetic multi-walled carbon nanotubes by in situ co-precipitation route
An effective method for preparing magnetic multi-walled carbon nanotubes (M-MWCNTs) was proposed by employing an in situ co-precipitation of ammonium ferrous sulfate hexahydrate and ammonium ferric sulfate dodecahydrate in a suspension of commercial MWCNTs. Microscopic and spectroscopic analyses cou...
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Published in: | Journal of industrial and engineering chemistry (Seoul, Korea) 2012, 18(5), , pp.1568-1571 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | An effective method for preparing magnetic multi-walled carbon nanotubes (M-MWCNTs) was proposed by employing an in situ co-precipitation of ammonium ferrous sulfate hexahydrate and ammonium ferric sulfate dodecahydrate in a suspension of commercial MWCNTs. Microscopic and spectroscopic analyses could confirm the presence of magnetite, maghemite and hematite on the surface of M-MWCNTs. Negative charges on the surfaces of acid-treated MWCNTs would lead to the attachment of iron derivatives which possessed positive charge due to electrostatic attraction. As a result, the prepared M-MWCNTs were clearly responsive to a permanent magnetic while the pristine MWCNTs were not. |
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ISSN: | 1226-086X 1876-794X |
DOI: | 10.1016/j.jiec.2012.04.016 |