Synergistic and competitive adsorption of organic dyes on multiwalled carbon nanotubes
A multiwalled carbon nanotube (MWCNT) was used as an adsorbent for removal of a cationic dye(methylene blue, MB) and acid dye (acid red 183, AR183) from aqueous solution in single and binarydye systems. Characterization of the MWCNT and MWCNT-dye systems were performed using several techniques such...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Elsevier BV
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/35844 |
| _version_ | 1848754606770749440 |
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| author | Wang, Shaobin Ng., C. Wang, Wentai Li, Qin Hao, Z. |
| author_facet | Wang, Shaobin Ng., C. Wang, Wentai Li, Qin Hao, Z. |
| author_sort | Wang, Shaobin |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A multiwalled carbon nanotube (MWCNT) was used as an adsorbent for removal of a cationic dye(methylene blue, MB) and acid dye (acid red 183, AR183) from aqueous solution in single and binarydye systems. Characterization of the MWCNT and MWCNT-dye systems were performed using several techniques such as Fourier transform infrared spectroscopy (FTIR), thermogravimetric–differential thermal analysis (TG–DTA), zeta potential and elemental analysis. Adsorption tests showed that the MWCNT presented higher adsorption of MB than AR183 in single and binary dye systems, revealing that p–p stacking is the main driving force responsible for the dye–MWCNT interaction. In single dye systems, the MWCNT presented the maximum adsorption capacities of MB and AR183 at 59.7 and 45.2 mg/g, respectively. In a binary dye system, a synergistic effect due to electronic attraction between MB and AR183 was found at low AR183 concentration (10 mg/L), which promotes the adsorption of both dyes on the MWCNT. However, MB adsorption could be reduced at higher AR183 concentration (>20 mg/L) due to a strong electrostatic attraction between MWCNT-AR183. |
| first_indexed | 2025-11-14T08:43:05Z |
| format | Journal Article |
| id | curtin-20.500.11937-35844 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:43:05Z |
| publishDate | 2012 |
| publisher | Elsevier BV |
| recordtype | eprints |
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| spelling | curtin-20.500.11937-358442018-03-29T09:09:00Z Synergistic and competitive adsorption of organic dyes on multiwalled carbon nanotubes Wang, Shaobin Ng., C. Wang, Wentai Li, Qin Hao, Z. Acid red 183 Multi-wall carbon nanotube Methylene blue Dye adsorption A multiwalled carbon nanotube (MWCNT) was used as an adsorbent for removal of a cationic dye(methylene blue, MB) and acid dye (acid red 183, AR183) from aqueous solution in single and binarydye systems. Characterization of the MWCNT and MWCNT-dye systems were performed using several techniques such as Fourier transform infrared spectroscopy (FTIR), thermogravimetric–differential thermal analysis (TG–DTA), zeta potential and elemental analysis. Adsorption tests showed that the MWCNT presented higher adsorption of MB than AR183 in single and binary dye systems, revealing that p–p stacking is the main driving force responsible for the dye–MWCNT interaction. In single dye systems, the MWCNT presented the maximum adsorption capacities of MB and AR183 at 59.7 and 45.2 mg/g, respectively. In a binary dye system, a synergistic effect due to electronic attraction between MB and AR183 was found at low AR183 concentration (10 mg/L), which promotes the adsorption of both dyes on the MWCNT. However, MB adsorption could be reduced at higher AR183 concentration (>20 mg/L) due to a strong electrostatic attraction between MWCNT-AR183. 2012 Journal Article http://hdl.handle.net/20.500.11937/35844 10.1016/j.cej.2012.05.008 Elsevier BV restricted |
| spellingShingle | Acid red 183 Multi-wall carbon nanotube Methylene blue Dye adsorption Wang, Shaobin Ng., C. Wang, Wentai Li, Qin Hao, Z. Synergistic and competitive adsorption of organic dyes on multiwalled carbon nanotubes |
| title | Synergistic and competitive adsorption of organic dyes on multiwalled carbon nanotubes |
| title_full | Synergistic and competitive adsorption of organic dyes on multiwalled carbon nanotubes |
| title_fullStr | Synergistic and competitive adsorption of organic dyes on multiwalled carbon nanotubes |
| title_full_unstemmed | Synergistic and competitive adsorption of organic dyes on multiwalled carbon nanotubes |
| title_short | Synergistic and competitive adsorption of organic dyes on multiwalled carbon nanotubes |
| title_sort | synergistic and competitive adsorption of organic dyes on multiwalled carbon nanotubes |
| topic | Acid red 183 Multi-wall carbon nanotube Methylene blue Dye adsorption |
| url | http://hdl.handle.net/20.500.11937/35844 |