Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves
The effect of microwaves on the functionalization of single-walled carbon nanotubes (SWNTs) by the diazonium method was studied. The usage of a new approach led to the identification of the strength of the interaction (physical or chemical) between the functional groups and the carbon nanotube sur...
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2014
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| Subjects: | |
| Online Access: | http://eprints.usm.my/38437/1/Chemi-_vs_physisorption_in_the_radical_functionalization_of_single-walled_carbon_nanotubes_under_microwaves.pdf |
| _version_ | 1797010032241410048 |
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| author | Victor, Mamane Guillaume, Mercier Abdul Shukor, Junidah Jérôme, Gleize Azizan, Aziz Yves, Fort Brigitte, Vigolo |
| author_facet | Victor, Mamane Guillaume, Mercier Abdul Shukor, Junidah Jérôme, Gleize Azizan, Aziz Yves, Fort Brigitte, Vigolo |
| author_sort | Victor, Mamane |
| collection | USM |
| description | The effect of microwaves on the functionalization of single-walled carbon nanotubes (SWNTs) by the diazonium method was
studied. The usage of a new approach led to the identification of the strength of the interaction (physical or chemical) between the
functional groups and the carbon nanotube surface. Moreover, the nature (chemical formula) of the adsorbed/grafted functional
groups was determined. According to thermogravimetric analysis coupled with mass spectrometry and Raman spectroscopy, the
optimal functionalization level was reached after 5 min of reaction. Prolonged reaction times can lead to undesired reactions such as
defunctionalization, solvent addition and polymerization of the grafted functions. The strength (chemi- vs physisorption) of the
bonds between the grafted functional groups and the SWNTs is discussed showing the occurrence of physical adsorption as a
consequence of defunctionalization after 15 min of reaction under microwaves. Several chemical mechanisms of grafting could be
identified, and it was possible to distinguish conditions leading to the desired chemical grafting from those leading to undesired
reactions such as physisorption and polymerization. |
| first_indexed | 2024-03-06T15:14:00Z |
| format | Article |
| id | usm.eprints-38437 |
| institution | Universiti Sains Malaysia |
| language | English |
| last_indexed | 2024-03-06T15:14:00Z |
| publishDate | 2014 |
| publisher | Beilstein-Institut |
| record_format | dspace |
| spelling | usm.eprints-384372018-01-19T01:18:17Z http://eprints.usm.my/38437/ Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves Victor, Mamane Guillaume, Mercier Abdul Shukor, Junidah Jérôme, Gleize Azizan, Aziz Yves, Fort Brigitte, Vigolo TN1-997 Mining engineering. Metallurgy The effect of microwaves on the functionalization of single-walled carbon nanotubes (SWNTs) by the diazonium method was studied. The usage of a new approach led to the identification of the strength of the interaction (physical or chemical) between the functional groups and the carbon nanotube surface. Moreover, the nature (chemical formula) of the adsorbed/grafted functional groups was determined. According to thermogravimetric analysis coupled with mass spectrometry and Raman spectroscopy, the optimal functionalization level was reached after 5 min of reaction. Prolonged reaction times can lead to undesired reactions such as defunctionalization, solvent addition and polymerization of the grafted functions. The strength (chemi- vs physisorption) of the bonds between the grafted functional groups and the SWNTs is discussed showing the occurrence of physical adsorption as a consequence of defunctionalization after 15 min of reaction under microwaves. Several chemical mechanisms of grafting could be identified, and it was possible to distinguish conditions leading to the desired chemical grafting from those leading to undesired reactions such as physisorption and polymerization. Beilstein-Institut 2014 Article PeerReviewed application/pdf en http://eprints.usm.my/38437/1/Chemi-_vs_physisorption_in_the_radical_functionalization_of_single-walled_carbon_nanotubes_under_microwaves.pdf Victor, Mamane and Guillaume, Mercier and Abdul Shukor, Junidah and Jérôme, Gleize and Azizan, Aziz and Yves, Fort and Brigitte, Vigolo (2014) Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves. Beilstein Journal of Nanotechnology, 5. pp. 537-545. ISSN 2190-4286 http://dx.doi.org/10.3762%2Fbjnano.5.63 |
| spellingShingle | TN1-997 Mining engineering. Metallurgy Victor, Mamane Guillaume, Mercier Abdul Shukor, Junidah Jérôme, Gleize Azizan, Aziz Yves, Fort Brigitte, Vigolo Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves |
| title | Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves |
| title_full | Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves |
| title_fullStr | Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves |
| title_full_unstemmed | Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves |
| title_short | Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves |
| title_sort | chemi vs physisorption in the radical functionalization of single walled carbon nanotubes under microwaves |
| topic | TN1-997 Mining engineering. Metallurgy |
| url | http://eprints.usm.my/38437/1/Chemi-_vs_physisorption_in_the_radical_functionalization_of_single-walled_carbon_nanotubes_under_microwaves.pdf |
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