Synthesis of Polyaniline coated Graphene Oxide @ SrTiO3 Nanocube Nanocomposites for Enhanced Removal of Carcinogenic Dyes from Aqueous Solution

Abstract

The present investigation highlights the synthesis of polyaniline (PANI) coated graphene oxide doped with SrTiO3 nanocube nanocomposites through facile in-situ oxidative polymerization method for the efficient removal of carcinogenic dyes, namely, the cationic dye methylene blue (MB) and the anionic dye methyl orange (MO). The synthesised nanocomposites were characterised by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The adsorption efficiencies of graphene oxide (GO), PANI homopolymer and SrTiO3 nanocubes-doped nanocomposites were assessed by monitoring the adsorption of methylene blue and methyl orange dyes from aqueous solution. The adsorption efficiency of nanocomposites doped with SrTiO3 nanocubes were found to be of higher magnitude as compared with undoped nanocomposite. Moreover, the nanocomposite with 2 wt% SrTiO3 with respect to graphene oxide demonstrated excellent adsorption behaviour with 99% and 91% removal of MB and MO respectively, in a very short duration of time.

A review of synthesis and morphology of SrTiO 3 for energy and other applications

“…This indicates that the nanosized SrTiO 3 does not have rapid adsorption rate but it has a considerably large adsorption capacity. In 2016, Shahabuddin et al modified SrTiO 3 with polyaniline‐coated graphene oxide to form a composite structure (PANI‐GO@SrTiO 3 ) for carcinogenic dyes adsorption . that a synergistic phenomenon taking place between the PANI chain, GO sheets, and SrTiO 3 .…”

Preparation and Characterization of WS2@SiO2 and WS2@PANI Core-Shell Nanocomposites

“…FTIR absorbance spectrum of sample INT-PANI-HA ( Figure 6 ) shows typical [ 71 , 89 , 90 , 91 , 92 , 93 , 94 ] bands for PANI (this sample is representative as the spectra for all PANI-coated samples looked similar). When aniline rings are connected through their amine groups, the aniline unit within the polymer can be found in a benzenoid (B) form and in a quinonoid (Q) form.…”

New magnetic Co3O4/Fe3O4 doped polyaniline nanocomposite for the effective and rapid removal of nitrate ions from ground water samples

“…These images clearly indicated the formation of cube-shaped cobalt oxide nanoparticles with a uniform shape and size. The implanted nanoparticles displayed aggregation [38], exhibited spherical shape and unevenly distributed all over the relatively smooth surface of PANI polymer [39]. PANI due to its porous nature is considered a potential candidate for many applications [40].…”