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Directionally-Grown Carboxymethyl Cellulose/Reduced Graphene Oxide Aerogel with Excellent Structure Stability and Adsorption Capacity

Polymers, 2020-09, Vol.12 (10), p.2219 [Peer Reviewed Journal]

2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2020 by the authors. 2020 ;ISSN: 2073-4360 ;EISSN: 2073-4360 ;DOI: 10.3390/polym12102219 ;PMID: 32992626

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Title:
Directionally-Grown Carboxymethyl Cellulose/Reduced Graphene Oxide Aerogel with Excellent Structure Stability and Adsorption Capacity
Author: Zhao, Mengke ; Zhang, Sufeng ; Fang, Guigan ; Huang, Chen ; Wu, Ting
Subjects: Adsorbents ; Adsorption ; Aerogels ; Aqueous solutions ; Carboxymethyl cellulose ; Cellulose ; Composite materials ; Crosslinking ; Dimensional stability ; directional freezing technique ; Dyes ; Efficiency ; Environmental protection ; Ethylene glycol ; Freezing ; Graphene ; Maleic acid ; Methylene blue ; Polyethylene glycol ; reduced graphene oxide ; Scanning electron microscopy ; Spectrum analysis ; Structural stability ; Ultrasonic imaging ; Vinyl ethers ; Wastewater treatment ; Water pollution
Is Part Of: Polymers, 2020-09, Vol.12 (10), p.2219
Description: A novel three-dimensional carboxymethyl cellulose (CMC)/reduced graphene oxide (rGO) composite aerogel crosslinked by poly (methyl vinyl ether-co-maleic acid)/poly (ethylene glycol) system via a directional freezing technique exhibits high structure stability while simultaneously maintaining its excellent adsorption capacity to remove organic dyes from liquid. A series of crosslinked aerogels with different amounts of GO were investigated for their adsorption capacity of methylene blue (MB), which were found to be superb adsorbents, and the maximum adsorption capacity reached 520.67 mg/g with the incorporation of rGO. The adsorption kinetics and isotherm studies revealed that the adsorption process followed the pseudo-second-order model and the Langmuir adsorption model, and the adsorption was a spontaneous process. Furthermore, the crosslinked aerogel can be easily recycled after washing with dilute HCl solution, which could retain over 97% of the adsorption capacity after recycling five times. These excellent properties endow the crosslinked CMC/rGO aerogel’s potential in wastewater treatment and environment protection.
Publisher: Basel: MDPI AG
Language: English
Identifier: ISSN: 2073-4360
EISSN: 2073-4360
DOI: 10.3390/polym12102219
PMID: 32992626
Source: Open Access: DOAJ Directory of Open Access Journals
Open Access: PubMed Central
Geneva Foundation Free Medical Journals at publisher websites
AUTh Library subscriptions: ProQuest Central
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Directionally-Grown Carboxymethyl Cellulose/Reduced Graphene Oxide Aerogel with Excellent Structure Stability and Adsorption Capacity

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