학술논문
Synthesis of Polyaniline-Coated Graphene Oxide@SrTiO₃ Nanocube Nanocomposites for Enhanced Removal of Carcinogenic Dyes from Aqueous Solution.
Document Type
Academic Journal
Author
Shahabuddin S; Polymer Research Laboratory, Chemistry Department, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia. syedshahabuddin@siswa.um.edu.my.; Sarih NM; Polymer Research Laboratory, Chemistry Department, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia. nmsarih@um.edu.my.; Afzal Kamboh M; Polymer Research Laboratory, Chemistry Department, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia. afzal82_kamboh@yahoo.com.; Rashidi Nodeh H; Polymer Research Laboratory, Chemistry Department, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia. hamid_rashidi82@yahoo.com.; Department of Chemistry, Faculty of Science, University of Tehran, Tehran 14174, Iran. hamid_rashidi82@yahoo.com.; Mohamad S; Polymer Research Laboratory, Chemistry Department, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia. sharifahm@um.edu.my.; University of Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, Kuala Lumpur 50603, Malaysia. sharifahm@um.edu.my.
Source
Publisher: MDPI Country of Publication: Switzerland NLM ID: 101545357 Publication Model: Electronic Cited Medium: Internet ISSN: 2073-4360 (Electronic) Linking ISSN: 20734360 NLM ISO Abbreviation: Polymers (Basel) Subsets: PubMed not MEDLINE
Subject
Language
English
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 presence of oxygenated functional groups comprised of hydroxyl and epoxy groups in graphene oxide (GO) and nitrogen-containing functionalities such as imine groups and amine groups in polyaniline work synergistically to impart cationic and anionic nature to the synthesised nanocomposite, whereas SrTiO₃ nanocubes act as spacers aiding in segregation of GO sheets, thereby increasing the effective surface area of nanocomposite. 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.