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...

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Main Authors:	Soon, Poh Lee, Ali, Gomaa A. M., Algarni, H., K. F., Chong
Format:	Article
Language:	English
Published:	Elsevier 2019
Subjects:	Q Science (General)
Online Access:	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

id	ump-23786
recordtype	eprints
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 https://doi.org/10.1016/j.molliq.2018.12.097 https://doi.org/10.1016/j.molliq.2018.12.097
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Soon, Poh Lee Ali, Gomaa A. M. Algarni, H. K. F., Chong Flake size-dependent adsorption of graphene oxide aerogel
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.
format	Article
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
title	Flake size-dependent adsorption of graphene oxide aerogel
title_short	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_sort	flake size-dependent adsorption of graphene oxide aerogel
publisher	Elsevier
publishDate	2019
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
first_indexed	2023-09-18T22:35:47Z
last_indexed	2023-09-18T22:35:47Z
_version_	1777416585833611264

Flake size-dependent adsorption of graphene oxide aerogel

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