Flake size-dependent adsorption of graphene oxide aerogel
In this work, the flake size-dependent adsorption kinetics of graphene oxide (GO) aerogel is studied. GO in different flake sizes are produced by sonication prior to the preparation of aerogel through freeze-dry method. The structural characterizations reveal that GO aerogel with smaller flake size...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019
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| Online Access: | http://umpir.ump.edu.my/id/eprint/23786/ http://umpir.ump.edu.my/id/eprint/23786/1/Flake%20size-dependent%20adsorption%20of%20graphene%20oxide%20aerogel.pdf |
| _version_ | 1848821888781910016 |
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| author | Soon, Poh Lee Ali, Gomaa A. M. Algarni, H. K. F., Chong |
| author_facet | Soon, Poh Lee Ali, Gomaa A. M. Algarni, H. K. F., Chong |
| author_sort | Soon, Poh Lee |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | In this work, the flake size-dependent adsorption kinetics of graphene oxide (GO) aerogel is studied. GO in different flake sizes are produced by sonication prior to the preparation of aerogel through freeze-dry method. The structural characterizations reveal that GO aerogel with smaller flake size possesses higher surface area and higher intensity of edge-plane oxygen functionalities. These provide more adsorption sites and active sites for heavy metal ions adsorption. Adsorption study reveals the higher Fe3+ ions adsorption capacity as well as uptake rate on GO aerogel with smaller flake size. The adsorption kinetic obeys the pseudo-second-order kinetic model which indicates the chemisorption is the rate-determining step. Adsorption isotherms of GO aerogel on Fe3+ ions show highest Langmuir adsorption capacity of 133.3 mg/g and render it to be a potential material for heavy metal ions removal in wastewater treatment. |
| first_indexed | 2025-11-15T02:32:30Z |
| format | Article |
| id | ump-23786 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T02:32:30Z |
| publishDate | 2019 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-237862019-01-15T03:00:16Z http://umpir.ump.edu.my/id/eprint/23786/ Flake size-dependent adsorption of graphene oxide aerogel Soon, Poh Lee Ali, Gomaa A. M. Algarni, H. K. F., Chong Q Science (General) In this work, the flake size-dependent adsorption kinetics of graphene oxide (GO) aerogel is studied. GO in different flake sizes are produced by sonication prior to the preparation of aerogel through freeze-dry method. The structural characterizations reveal that GO aerogel with smaller flake size possesses higher surface area and higher intensity of edge-plane oxygen functionalities. These provide more adsorption sites and active sites for heavy metal ions adsorption. Adsorption study reveals the higher Fe3+ ions adsorption capacity as well as uptake rate on GO aerogel with smaller flake size. The adsorption kinetic obeys the pseudo-second-order kinetic model which indicates the chemisorption is the rate-determining step. Adsorption isotherms of GO aerogel on Fe3+ ions show highest Langmuir adsorption capacity of 133.3 mg/g and render it to be a potential material for heavy metal ions removal in wastewater treatment. Elsevier 2019 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/23786/1/Flake%20size-dependent%20adsorption%20of%20graphene%20oxide%20aerogel.pdf Soon, Poh Lee and Ali, Gomaa A. M. and Algarni, H. and K. F., Chong (2019) Flake size-dependent adsorption of graphene oxide aerogel. Journal of Molecular Liquids, 277. pp. 175-180. ISSN 0167-7322. (Published) https://doi.org/10.1016/j.molliq.2018.12.097 https://doi.org/10.1016/j.molliq.2018.12.097 |
| spellingShingle | Q Science (General) Soon, Poh Lee Ali, Gomaa A. M. Algarni, H. K. F., Chong Flake size-dependent adsorption of graphene oxide aerogel |
| title | Flake size-dependent adsorption of graphene oxide aerogel |
| title_full | Flake size-dependent adsorption of graphene oxide aerogel |
| title_fullStr | Flake size-dependent adsorption of graphene oxide aerogel |
| title_full_unstemmed | Flake size-dependent adsorption of graphene oxide aerogel |
| title_short | Flake size-dependent adsorption of graphene oxide aerogel |
| title_sort | flake size-dependent adsorption of graphene oxide aerogel |
| topic | Q Science (General) |
| url | http://umpir.ump.edu.my/id/eprint/23786/ http://umpir.ump.edu.my/id/eprint/23786/ http://umpir.ump.edu.my/id/eprint/23786/ http://umpir.ump.edu.my/id/eprint/23786/1/Flake%20size-dependent%20adsorption%20of%20graphene%20oxide%20aerogel.pdf |