Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity
Single-walled carbon nanotube (SWCNT)-mesostructured silica nanoparticle (MSN) adsorbents (S-MSNs) were prepared through a simple one-step method with various loadings of SWCNTs. Their surface properties were characterized by XRD, TEM, N2 physisorption, and FTIR spectroscopy. A grape-like S-MSN was...
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Royal Society of Chemistry
2015
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| author | Abdul Jalil, Aishah Triwahyono, Sugeng Karim, Abdellah H. Nordin, Norazzizi K. Asli, Umi Aishah Hassim, Mimi Haryani Prasetyoko, Didik |
| author_facet | Abdul Jalil, Aishah Triwahyono, Sugeng Karim, Abdellah H. Nordin, Norazzizi K. Asli, Umi Aishah Hassim, Mimi Haryani Prasetyoko, Didik |
| author_sort | Abdul Jalil, Aishah |
| collection | ePrints |
| description | Single-walled carbon nanotube (SWCNT)-mesostructured silica nanoparticle (MSN) adsorbents (S-MSNs) were prepared through a simple one-step method with various loadings of SWCNTs. Their surface properties were characterized by XRD, TEM, N2 physisorption, and FTIR spectroscopy. A grape-like S-MSN was produced, for which the growth of MSNs became intense with increasing CNT loading. A bimodal pore structure also developed, which increased the average pore size and pore volume, but decreased the surface area. The increasing amount of CNTs was found to provide more sites for silica growth that enhanced the adsorptivity of the S-MSNs toward methylene blue (MB) dye. Accordingly, 0.1 g L-1 5 wt% S-MSN was able to adsorb 478 mg g-1 (qm) of 50 mg L-1 MB at pH 7 and 323 K. The equilibrium data were evaluated using the Langmuir, Freundlich, Redlich-Peterson, and Dubinin-Radushkevich isotherm models, with the Langmuir and Redlich-Peterson models affording the best fit to the adsorption data. The adsorption was best described by a pseudo-second-order kinetics model and thermodynamically favored the endothermic chemisorption process. These results indicated the potential of S-MSN as an effective new adsorbent for dye adsorption |
| first_indexed | 2024-03-05T19:37:53Z |
| format | Article |
| id | utm.eprints-55510 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:37:53Z |
| publishDate | 2015 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | utm.eprints-555102017-02-15T04:45:20Z http://eprints.utm.my/55510/ Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity Abdul Jalil, Aishah Triwahyono, Sugeng Karim, Abdellah H. Nordin, Norazzizi K. Asli, Umi Aishah Hassim, Mimi Haryani Prasetyoko, Didik TP Chemical technology Single-walled carbon nanotube (SWCNT)-mesostructured silica nanoparticle (MSN) adsorbents (S-MSNs) were prepared through a simple one-step method with various loadings of SWCNTs. Their surface properties were characterized by XRD, TEM, N2 physisorption, and FTIR spectroscopy. A grape-like S-MSN was produced, for which the growth of MSNs became intense with increasing CNT loading. A bimodal pore structure also developed, which increased the average pore size and pore volume, but decreased the surface area. The increasing amount of CNTs was found to provide more sites for silica growth that enhanced the adsorptivity of the S-MSNs toward methylene blue (MB) dye. Accordingly, 0.1 g L-1 5 wt% S-MSN was able to adsorb 478 mg g-1 (qm) of 50 mg L-1 MB at pH 7 and 323 K. The equilibrium data were evaluated using the Langmuir, Freundlich, Redlich-Peterson, and Dubinin-Radushkevich isotherm models, with the Langmuir and Redlich-Peterson models affording the best fit to the adsorption data. The adsorption was best described by a pseudo-second-order kinetics model and thermodynamically favored the endothermic chemisorption process. These results indicated the potential of S-MSN as an effective new adsorbent for dye adsorption Royal Society of Chemistry 2015-08 Article PeerReviewed Abdul Jalil, Aishah and Triwahyono, Sugeng and Karim, Abdellah H. and Nordin, Norazzizi K. and Asli, Umi Aishah and Hassim, Mimi Haryani and Prasetyoko, Didik (2015) Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity. RSC Advances, 5 (88). pp. 71796-71804. ISSN 2046-2069 http://dx.doi.org/10.1039/c5ra12931a DOI:10.1039/c5ra12931a |
| spellingShingle | TP Chemical technology Abdul Jalil, Aishah Triwahyono, Sugeng Karim, Abdellah H. Nordin, Norazzizi K. Asli, Umi Aishah Hassim, Mimi Haryani Prasetyoko, Didik Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity |
| title | Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity |
| title_full | Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity |
| title_fullStr | Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity |
| title_full_unstemmed | Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity |
| title_short | Grape-like mesostructured silica nanoparticle-decorated single-walled carbon nanotubes: silica growth and dye adsorptivity |
| title_sort | grape like mesostructured silica nanoparticle decorated single walled carbon nanotubes silica growth and dye adsorptivity |
| topic | TP Chemical technology |
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