Sono-assisted preparation of bio-nanocomposite for removal of Pb2+ ions: Study of morphology, thermal and wettability properties

Shadpour Mallakpour; Vajiheh Behranvand

doi:10.1016/j.ultsonch.2017.06.015

Sono-assisted preparation of bio-nanocomposite for removal of Pb²⁺ ions: Study of morphology, thermal and wettability properties

Ultrason Sonochem. 2017 Nov:39:872-882. doi: 10.1016/j.ultsonch.2017.06.015. Epub 2017 Jun 19.

Authors

Shadpour Mallakpour¹, Vajiheh Behranvand²

Affiliations

¹ Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran. Electronic address: mallak@cc.iut.ac.ir.
² Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.

PMID: 28733018
DOI: 10.1016/j.ultsonch.2017.06.015

Abstract

Multi-walled carbon nanotubes (MWCNT) loaded poly(ethylene terephthalate) (PET) composites, with different CNT contents, were fabricated through an ultrasound assisted method as a fast and green way. Then, the obtained composites were fully characterized via FT-IR, UV-Vis, XRD, TGA, FE-SEM and TEM, etc. For this purpose, PET bottle was recycled and applied as matrix of nanocomposites (NC)s. Then, we dispersed the covalent functionalization of MWCNTs with a protein dispersant and obtained a powder of protein-functionalized CNTs. Bio-functionalized MWCNTs showed higher Pb²⁺ removal efficiency compared to MWCNT-COOH as ascertained via batch equilibrium adsorption experiments. Also, the results indicated the novel NCs presents a high affinity for Pb²⁺ heavy metal owing to the presence of several good sites. The contact angle results indicated that the addition of MWCNT-BSA increased significantly the contact angle compared to the pure PET. It was concluded that inflame retarding feature of NC was higher than pure polymer.

Keywords: Contact angle; MWCNTs; Pb(2+) removal; Poly(ethylene terephthalate); Protein; Sonochemical technology.