Amino Acid-Doped Polyaniline Nanotubes as Efficient Adsorbent for Wastewater Treatment. (23rd May 2022)

• Record Type: Journal Article
• Authors: Zhao, Zhao; Yang, Yimin; Xu, Longfei; Qiu, Zihan; Wang, Ziheng; Luo, Yongfeng; Du, Kun
• Other Names: Petrella Andrea Academic Editor.
• Is Part Of: Journal of chemistry. Volume 2022(2022)
• Publication Date: 2022-05-23
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1155/2022/2041512
• Languages: English
• ISSNs: 2090-9063

Abstract

Abstract : A natural amino acid-doped polyaniline nanostructure was prepared by a simple in situ chemical polymerization method in an aqueous medium. The structure and morphology of composite material were characterized by FESEM, TEM, FT-IR, and XRD. The results showed that the product possesses a large aspect ratio and a hollow tubular morphology. As-synthesized products were further applied to remove dyes and heavy metal ions from the aqueous solution, which exhibited good removal capacity toward Congo red (955.6 mg·g −1 ) and Cr(VI) (60.0 mg·g −1 ). The adsorption data for the former were found to be well described by the pseudo-first-order kinetic and Langmuir adsorption isotherm model. Thermodynamic studies show that the adsorption of Congo red by GluP is a spontaneous and endothermic process. Moreover, cyclic experiment results show that the polyaniline composites exhibited good recyclability. Therefore, these amino acid-doped polyaniline nanotubes can be expected to be an ideal candidate for the removal of organic dye and heavy metal ions from wastewater.