Fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide
The aim of this study was to select the optimal conditions for the carbonization process followed by surface modification treatment with sodium hydroxide (NaOH) to obtain a highly microporous activated carbon structure derived from palm kernel shells (PKS) and coconut shells (CS). The effects of the...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Multidisciplinary Digital Publishing Institute
2021
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| Online Access: | http://psasir.upm.edu.my/id/eprint/97253/1/ABSTRACT.pdf |
| _version_ | 1796983371312660480 |
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| author | Mohd Sahfani, Nor Hafizuddin Lee, Chuan Li Chin, Kit Ling H’ng, Paik San Khoo, Pui San Rashid, Umer |
| author_facet | Mohd Sahfani, Nor Hafizuddin Lee, Chuan Li Chin, Kit Ling H’ng, Paik San Khoo, Pui San Rashid, Umer |
| author_sort | Mohd Sahfani, Nor Hafizuddin |
| collection | UPM |
| description | The aim of this study was to select the optimal conditions for the carbonization process followed by surface modification treatment with sodium hydroxide (NaOH) to obtain a highly microporous activated carbon structure derived from palm kernel shells (PKS) and coconut shells (CS). The effects of the carbonization temperature and NaOH concentration on the physiochemical properties, adsorption capability, specific surface area, surface morphology, and surface chemistry of PKS and CS were evaluated in this study. The results show that surface-modified activated carbons presented higher surface area values (CS: 356.87 m2 g−1, PKS: 427.64 m2 g−1), smaller pore size (CS: 2.24 nm, PKS: 1.99 nm), and larger pore volume (CS: 0.34 cm3 g−1, PKS: 0.30 cm3 g−1) than the untreated activated carbon, demonstrating that the NaOH surface modification was efficient enough to improve the surface characteristics of the activated carbon. Moreover, surface modification via 25% NaOH greatly increases the active functional group of activated carbon, thereby directly increasing the adsorption capability of activated carbon (CS: 527.44 mg g−1, PKS: 627.03 mg g−1). By applying the NaOH post-treatment as the ultimate surface modification technique to the activated carbon derived from PKS and CS, a highly microporous structure was produced. |
| first_indexed | 2024-03-06T11:05:35Z |
| format | Article |
| id | upm.eprints-97253 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T11:05:35Z |
| publishDate | 2021 |
| publisher | Multidisciplinary Digital Publishing Institute |
| record_format | dspace |
| spelling | upm.eprints-972532022-09-13T04:55:59Z http://psasir.upm.edu.my/id/eprint/97253/ Fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide Mohd Sahfani, Nor Hafizuddin Lee, Chuan Li Chin, Kit Ling H’ng, Paik San Khoo, Pui San Rashid, Umer The aim of this study was to select the optimal conditions for the carbonization process followed by surface modification treatment with sodium hydroxide (NaOH) to obtain a highly microporous activated carbon structure derived from palm kernel shells (PKS) and coconut shells (CS). The effects of the carbonization temperature and NaOH concentration on the physiochemical properties, adsorption capability, specific surface area, surface morphology, and surface chemistry of PKS and CS were evaluated in this study. The results show that surface-modified activated carbons presented higher surface area values (CS: 356.87 m2 g−1, PKS: 427.64 m2 g−1), smaller pore size (CS: 2.24 nm, PKS: 1.99 nm), and larger pore volume (CS: 0.34 cm3 g−1, PKS: 0.30 cm3 g−1) than the untreated activated carbon, demonstrating that the NaOH surface modification was efficient enough to improve the surface characteristics of the activated carbon. Moreover, surface modification via 25% NaOH greatly increases the active functional group of activated carbon, thereby directly increasing the adsorption capability of activated carbon (CS: 527.44 mg g−1, PKS: 627.03 mg g−1). By applying the NaOH post-treatment as the ultimate surface modification technique to the activated carbon derived from PKS and CS, a highly microporous structure was produced. Multidisciplinary Digital Publishing Institute 2021 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/97253/1/ABSTRACT.pdf Mohd Sahfani, Nor Hafizuddin and Lee, Chuan Li and Chin, Kit Ling and H’ng, Paik San and Khoo, Pui San and Rashid, Umer (2021) Fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide. Polymers, 13 (22). art. no. 3954. pp. 1-16. ISSN 2073-4360 https://www.mdpi.com/2073-4360/13/22/3954 10.3390/polym13223954 |
| spellingShingle | Mohd Sahfani, Nor Hafizuddin Lee, Chuan Li Chin, Kit Ling H’ng, Paik San Khoo, Pui San Rashid, Umer Fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide |
| title | Fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide |
| title_full | Fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide |
| title_fullStr | Fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide |
| title_full_unstemmed | Fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide |
| title_short | Fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide |
| title_sort | fabrication of highly microporous structure activated carbon via surface modification with sodium hydroxide |
| url | http://psasir.upm.edu.my/id/eprint/97253/1/ABSTRACT.pdf |
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