Graphene oxide edge grafting of polyaniline nanocomposite: an efficient adsorbent for methylene blue and methyl orange | Zendy

Hefang Wang | Zendy; Mengmeng Duan | Zendy; Yong Guo | Zendy; Cunyue Wang | Zendy; Z. Shi | Zendy; Jidong Liu | Zendy; Jianhua Lv | Zendy

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Graphene oxide edge grafting of polyaniline nanocomposite: an efficient adsorbent for methylene blue and methyl orange

Author(s) -

Hefang Wang,

Mengmeng Duan,

Yong Guo,

Cunyue Wang,

Z. Shi,

Jidong Liu,

Jianhua Lv

Publication year - 2018

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2018.250

Subject(s) - polyaniline , methyl orange , adsorption , methylene blue , graphene , nanocomposite , aqueous solution , materials science , x ray photoelectron spectroscopy , cationic polymerization , oxide , fourier transform infrared spectroscopy , nuclear chemistry , chemical engineering , polymerization , chemistry , polymer chemistry , organic chemistry , polymer , photocatalysis , composite material , nanotechnology , catalysis , engineering , metallurgy

Polyaniline (PANI) chains were grafted at the edge of graphene oxide (GO) sheets by in-situ chemical oxidation polymerization. The obtained GO-PANI composite was used for the adsorption of cationic methylene blue (MB) and anionic methyl orange (MO) dyes from aqueous solutions. The structure of the GO-PANI composite was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electronic micrograph (SEM), X-ray photoelectron spectroscopy (XPS) and zeta potentials. GO-PANI exhibited a high adsorption capacity for MB (962 mg/g) and MO (885 mg/g) compared with other reported absorbents, which was due to adsorption through strong π-π stacking and anion-cation interactions. The nanocomposite could be recycled five times without significant loss in removal abilities for MB (87.8%) and MO (75.0%), respectively. GO-PANI composite is a promising adsorbent for the adsorption of anionic and cationic dyes from aqueous solutions.

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