Synthesis and characterization of Co3O4 nanocube-doped polyaniline nanocomposites with enhanced methyl orange adsorption from aqueous solution. Issue 49 (4th May 2016)

• Record Type: Journal Article
• Authors: Shahabuddin, Syed; Sarih, Norazilawati Muhamad; Mohamad, Sharifah; Atika Baharin, Siti Nor
• Is Part Of: RSC advances. Volume 6:Issue 49(2016)
• Page Start: 43388
• Page End: 43400
• Publication Date: 2016-05-04
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra04757b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Co3 O4 nanocube polyaniline nanocomposites have been successfully synthesised. They show enhanced surface properties and a greater adsorption capacity to remove MO efficiently within a short duration of time. Abstract : In the present study, Co3 O4 nanocube-doped polyaniline nanocomposites have been successfully synthesised via an in situ oxidative polymerisation technique using ammonium persulfate (APS) as an oxidant in acidic medium for efficient removal of methyl orange (MO) from aqueous solution. Field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), Brunauer–Emmett–Teller analysis (BET) and Fourier transform infrared spectroscopy (FT-IR) measurements were used to characterise the prepared nanocomposites. The adsorption efficiencies of the PANI homopolymer and Co3 O4 nanocube-doped nanocomposites were evaluated by monitoring the adsorption of methyl orange model dye from aqueous solution. The results revealed that the adsorption efficiency of the nanocomposites that were doped with Co3 O4 nanocubes was higher than that of the undoped PANI and the adsorption kinetics followed a pseudo-second order reaction. Moreover, the nanocomposite with 4 wt% Co3 O4 nanocubes with respect to aniline exhibited a superior adsorption capacity (107 mg g −1 ) as compared to other absorbents.