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Selective removal of anionic dyes using poly (N, N -dimethyl amino ethylmethacrylate) functionalized graphene oxide

Li, Chengpeng, Zhu, Haijin, She, Xiaodong, Wang, Tao, She, Fengshua and Kong, Lingxue 2016, Selective removal of anionic dyes using poly (N, N -dimethyl amino ethylmethacrylate) functionalized graphene oxide, RSC Advances, vol. 6, no. 71, pp. 67242-67251, doi: 10.1039/c6ra09049d.

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Title Selective removal of anionic dyes using poly (N, N -dimethyl amino ethylmethacrylate) functionalized graphene oxide
Formatted title Selective removal of anionic dyes using poly (N, N -dimethyl amino ethylmethacrylate) functionalized graphene oxide
Author(s) Li, Chengpeng
Zhu, HaijinORCID iD for Zhu, Haijin orcid.org/0000-0001-6352-7633
She, Xiaodong
Wang, Tao
She, Fengshua
Kong, LingxueORCID iD for Kong, Lingxue orcid.org/0000-0001-6219-3897
Journal name RSC Advances
Volume number 6
Issue number 71
Start page 67242
End page 67251
Total pages 10
Publisher Royal Society of Chemistry
Place of publication London, Eng.
Publication date 2016
ISSN 2046-2069
Summary An in situ polymerization strategy was used to functionalize graphene oxide (GO) with poly(N,N-dimethyl amino ethylmethacrylate) (PDMAEMA) for the selective removal of anionic dyes. Various characterization methods demonstrate that PDMAEMA-grafted GO (GO-PDMAEMA) was successfully synthesized, and the high PDMAEMA content of 68.5% in GO-PDMAEMA changed the zeta potential significantly from -36.5 (GO) to 41.5 (GO-PDMAEMA). This change in the charge of GO-PDMAEMA greatly increased the adsorption capacities for anionic dye orange G (OG) compared to the pristine GO. The maximum adsorption capacity for anionic OG dye based on the Langmuir model is 609.8 mg g-1. The adsorption mechanism is believed to be a consecutive process of intra-particle diffusion and surface adsorption, with electrostatic interactions as the key driving force. The GO-PDMAEMA nanocomposite also showed excellent regeneration capacity and selectivity towards the separation of various anionic dyes (i.e. OG, Eosin yellow and Congo red) from an aqueous dye mixture. In conclusion, our method offers a promising strategy for developing new anionic dye adsorbents.
Language eng
DOI 10.1039/c6ra09049d
Field of Research 091202 Composite and Hybrid Materials
030304 Physical Chemistry of Materials
Socio Economic Objective 860699 Industrial Chemicals and Related Products not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, The Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30085078

Document type: Journal Article
Collections: School of Medicine
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