Jump to main content
Jump to site search

Issue 71, 2016, Issue in Progress
Previous Article Next Article

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

Author affiliations

Abstract

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 āˆ’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 gāˆ’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.

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

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Apr 2016, accepted on 11 Jul 2016 and first published on 11 Jul 2016


Article type: Paper
DOI: 10.1039/C6RA09049D
RSC Adv., 2016,6, 67242-67251

  •   Request permissions

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

    C. Li, H. Zhu, X. She, T. Wang, F. She and L. Kong, RSC Adv., 2016, 6, 67242
    DOI: 10.1039/C6RA09049D

Search articles by author

Spotlight

Advertisements