Surface properties transformation of multi-walled carbon nanotubes on reatment with various acids.
Multi-walled carbon nanotubes (MWCNTs) were treated with various acids namely nitric, citric, chromic and a mixture of nitric-sulphuric acids to introduce carboxylic acid functional groups on them. As a result of this treatment, carboxylic functional groups were found to exist as indicated by Fourie...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
International Congress of Chemistry and Environment
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/24899/1/Surface%20properties%20transformation%20of%20multi.pdf |
| _version_ | 1796970651374845952 |
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| author | Hussein, Mohd. Zobir Latip, Suzanita Sarijo, Siti Halimah Zainal, Zulkarnain |
| author_facet | Hussein, Mohd. Zobir Latip, Suzanita Sarijo, Siti Halimah Zainal, Zulkarnain |
| author_sort | Hussein, Mohd. Zobir |
| collection | UPM |
| description | Multi-walled carbon nanotubes (MWCNTs) were treated with various acids namely nitric, citric, chromic and a mixture of nitric-sulphuric acids to introduce carboxylic acid functional groups on them. As a result of this treatment, carboxylic functional groups were found to exist as indicated by Fourier transformed infrared spectroscopy (FTIR) study. Breuneur-Emmet-Teller (BET) specific surface area of the resulting samples was found to be 98, 133, 167 and 247 m 3/g for the sample treated with a mixture of nitric and sulfuric, citric acid chromic acid and nitric acid respectively. Compared to the specific surface area of 1210 m 2/g for the starting MWCNTs, this is equivalent to percentage reduction of 91.8, 89.0, 86.2 and 79.6 % respectively. The crystallinity of the samples increased when nitric and a mixture of nitric and sulphuric acids were used for the treatment, but decreased when citric or chromic acid were used, as observed by X-ray diffraction (XRD) study. Except for the MWCNTs treated with nitric acid, diameter expansion was observed for all the samples. |
| first_indexed | 2024-03-06T08:01:13Z |
| format | Article |
| id | upm.eprints-24899 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T08:01:13Z |
| publishDate | 2011 |
| publisher | International Congress of Chemistry and Environment |
| record_format | dspace |
| spelling | upm.eprints-248992015-09-14T00:57:08Z http://psasir.upm.edu.my/id/eprint/24899/ Surface properties transformation of multi-walled carbon nanotubes on reatment with various acids. Hussein, Mohd. Zobir Latip, Suzanita Sarijo, Siti Halimah Zainal, Zulkarnain Multi-walled carbon nanotubes (MWCNTs) were treated with various acids namely nitric, citric, chromic and a mixture of nitric-sulphuric acids to introduce carboxylic acid functional groups on them. As a result of this treatment, carboxylic functional groups were found to exist as indicated by Fourier transformed infrared spectroscopy (FTIR) study. Breuneur-Emmet-Teller (BET) specific surface area of the resulting samples was found to be 98, 133, 167 and 247 m 3/g for the sample treated with a mixture of nitric and sulfuric, citric acid chromic acid and nitric acid respectively. Compared to the specific surface area of 1210 m 2/g for the starting MWCNTs, this is equivalent to percentage reduction of 91.8, 89.0, 86.2 and 79.6 % respectively. The crystallinity of the samples increased when nitric and a mixture of nitric and sulphuric acids were used for the treatment, but decreased when citric or chromic acid were used, as observed by X-ray diffraction (XRD) study. Except for the MWCNTs treated with nitric acid, diameter expansion was observed for all the samples. International Congress of Chemistry and Environment 2011-06 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/24899/1/Surface%20properties%20transformation%20of%20multi.pdf Hussein, Mohd. Zobir and Latip, Suzanita and Sarijo, Siti Halimah and Zainal, Zulkarnain (2011) Surface properties transformation of multi-walled carbon nanotubes on reatment with various acids. Research Journal of Chemistry and Environment, 15 (2 ). pp. 438-444. ISSN 0972-0626 http://www.waset.org/ English |
| spellingShingle | Hussein, Mohd. Zobir Latip, Suzanita Sarijo, Siti Halimah Zainal, Zulkarnain Surface properties transformation of multi-walled carbon nanotubes on reatment with various acids. |
| title | Surface properties transformation of multi-walled carbon nanotubes on reatment with various acids. |
| title_full | Surface properties transformation of multi-walled carbon nanotubes on reatment with various acids. |
| title_fullStr | Surface properties transformation of multi-walled carbon nanotubes on reatment with various acids. |
| title_full_unstemmed | Surface properties transformation of multi-walled carbon nanotubes on reatment with various acids. |
| title_short | Surface properties transformation of multi-walled carbon nanotubes on reatment with various acids. |
| title_sort | surface properties transformation of multi walled carbon nanotubes on reatment with various acids |
| url | http://psasir.upm.edu.my/id/eprint/24899/1/Surface%20properties%20transformation%20of%20multi.pdf |
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