Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture
This paper reports on the synthesis of single walled carbon nanotubes (SWCNTs) from an activated mixture of iron (II) phthalocyanine, its metal-free derivative and ferric acetate. The powdered mixture was activated by compression into a tablet by applying a force of 300 kN, followed by re-grinding i...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Indian Academy of Sciences
2016
|
| Subjects: | |
| Online Access: | http://link.springer.com.access.msu.ac.zw:2048/article/10.1007%2Fs12039-015-0886-y |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1779905635207348224 |
|---|---|
| author | Mugadza, Tawanda Antunes, Edith Nyokong, Tebello |
| author_facet | Mugadza, Tawanda Antunes, Edith Nyokong, Tebello |
| author_sort | Mugadza, Tawanda |
| collection | DSpace |
| description | This paper reports on the synthesis of single walled carbon nanotubes (SWCNTs) from an activated mixture of iron (II) phthalocyanine, its metal-free derivative and ferric acetate. The powdered mixture was activated by compression into a tablet by applying a force of 300 kN, followed by re-grinding into powder and heating it to high temperatures (1000°C). The activation by compression resulted in more than 50% debundling of SWCNTs as judged by transition electron microscopy. Acid functionalization of the SWCNTs was confirmed by the increase in the D:G ratio from 0.56 to 0.87 in the Raman spectra and the observation of an average of one carboxylic acid group per 13 carbon atoms from thermogravimetric analysis (TGA). TGA also showed that the initial decomposition temperatures for the activated and non-activated mixtures to be 205°C and 245°C, respectively. Hence, activation leads to the lowering of the pyrolysis temperature of the phthalocyanines. X-ray diffraction, electronic absorption and Fourier transform infrared spectra were also employed to characterize the SWCNT |
| format | Article |
| id | ir-11408-1092 |
| institution | My University |
| language | English |
| publishDate | 2016 |
| publisher | Indian Academy of Sciences |
| record_format | dspace |
| spelling | ir-11408-10922022-06-27T13:49:06Z Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture Mugadza, Tawanda Antunes, Edith Nyokong, Tebello Carbon nanotubes iron(II) phthalocyanine iron(III) acetate This paper reports on the synthesis of single walled carbon nanotubes (SWCNTs) from an activated mixture of iron (II) phthalocyanine, its metal-free derivative and ferric acetate. The powdered mixture was activated by compression into a tablet by applying a force of 300 kN, followed by re-grinding into powder and heating it to high temperatures (1000°C). The activation by compression resulted in more than 50% debundling of SWCNTs as judged by transition electron microscopy. Acid functionalization of the SWCNTs was confirmed by the increase in the D:G ratio from 0.56 to 0.87 in the Raman spectra and the observation of an average of one carboxylic acid group per 13 carbon atoms from thermogravimetric analysis (TGA). TGA also showed that the initial decomposition temperatures for the activated and non-activated mixtures to be 205°C and 245°C, respectively. Hence, activation leads to the lowering of the pyrolysis temperature of the phthalocyanines. X-ray diffraction, electronic absorption and Fourier transform infrared spectra were also employed to characterize the SWCNT 2016-04-27T11:06:14Z 2016-04-27T11:06:14Z 2015 Article 0974-3626 http://link.springer.com.access.msu.ac.zw:2048/article/10.1007%2Fs12039-015-0886-y en Journal of Chemical Sciences;Vol. 127, no. 7 open Indian Academy of Sciences |
| spellingShingle | Carbon nanotubes iron(II) phthalocyanine iron(III) acetate Mugadza, Tawanda Antunes, Edith Nyokong, Tebello Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture |
| title | Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture |
| title_full | Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture |
| title_fullStr | Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture |
| title_full_unstemmed | Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture |
| title_short | Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture |
| title_sort | synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(ii) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture |
| topic | Carbon nanotubes iron(II) phthalocyanine iron(III) acetate |
| url | http://link.springer.com.access.msu.ac.zw:2048/article/10.1007%2Fs12039-015-0886-y |
| work_keys_str_mv | AT mugadzatawanda synthesisofsinglewalledcarbonnanotubesbythepyrolysisofacompressionactivatedironiiphthalocyaninephthalocyaninemetalfreederivativeferricacetatemixture AT antunesedith synthesisofsinglewalledcarbonnanotubesbythepyrolysisofacompressionactivatedironiiphthalocyaninephthalocyaninemetalfreederivativeferricacetatemixture AT nyokongtebello synthesisofsinglewalledcarbonnanotubesbythepyrolysisofacompressionactivatedironiiphthalocyaninephthalocyaninemetalfreederivativeferricacetatemixture |