« Previous AbstractEffect of ethanol on the sorption of four targeted wine volatile compounds in a polyethylene film    Next AbstractAnalysis of Copy Number Variation in the Abp Gene Regions of Two House Mouse Subspecies Suggests Divergence during the Gene Family Expansions »

J Hazard Mater

Title:		Graphene oxide enhances thermal stability and microwave absorption/regeneration of a porous polymer
Author(s):		Peyravi A; Ahmadijokani F; Arjmand M; Hashisho Z;
Address:		"Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada. Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada. Electronic address: hashisho@ualberta.ca"
Journal Title:		J Hazard Mater
Year:		2022
Volume:		20220326
Issue:
Page Number:		128792 -
DOI:		10.1016/j.jhazmat.2022.128792
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"Microwave regeneration of adsorbents offers several advantages over conventional regeneration methods; however, its application for microwave transparent adsorbents such as polymers is challenging. In this study, hypercrosslinked polymer/graphene oxide (GO) nanocomposites with large surface area and enhanced microwave absorption ability were synthesized. Polymers of 4, 4 -bis ((chloromethyl)-1, 1 -biphenyl- benzyl chloride) were hypercrosslinked through the Friedel-Crafts reactions. GO sheets were synthesized through the Hummer's method. Nanocomposites with different GO contents (1-8 wt%) were synthesized by solution mixing method. Thermogravimetry analysis revealed a large enhancement in the thermal stability of GO-filled nanocomposites compared to pristine polymer. N(2) adsorption isotherm analysis showed 7% and 10% reduction in BET surface area and total pore volume of the nanocomposite with 8 wt% GO. Compared to the pristine polymer, the dielectric constant and dielectric loss factor increased from 5 to 17 and 0.05-1.6, respectively, for the nanocomposites with 8 wt% GO. Microwave-assisted desorption of toluene from samples revealed more than 160 masculineC and 4 times improvement in the desorption temperature and desorption efficiency, respectively, by addition of 4 wt% GO to the polymer. This study showed the important role of GO addition for efficient microwave-assisted regeneration of polymer adsorbents"
Keywords:		"Graphene oxide Microwave Absorption Polymers Volatile organic compound, Adsorption;"
Notes:		"PubMed-not-MEDLINEPeyravi, Arman Ahmadijokani, Farhad Arjmand, Mohammad Hashisho, Zaher eng Netherlands 2022/04/02 J Hazard Mater. 2022 Jul 5; 433:128792. doi: 10.1016/j.jhazmat.2022.128792. Epub 2022 Mar 26"