Electrospun polyurethane/phytic acid nanofibrous membrane for high efficient removal of heavy metal ions. Issue 7 (21st March 2021)

• Record Type: Journal Article
• Authors: Fang, Yinchun; Liu, Xinhua; Wu, Xiao; Tao, Xuchen; Fei, Wenqing
• Is Part Of: Environmental technology. Volume 42:Issue 7(2021)
• Page Start: 1053
• Page End: 1060
• Publication Date: 2021-03-21
• Subjects: Phytic acid -- polyurethane -- electrospinning -- nanofiber -- heavy metal ions; Environmental engineering -- Periodicals; Environmental protection -- Periodicals; 628.05
• DOI: 10.1080/09593330.2019.1652695
• Languages: English
• ISSNs: 0959-3330

Abstract

ABSTRACT: Polyurethane (PU) nanofibers possess large specific surface area and excellent mechanical properties which have been used as the matrix for many applications. Phytic acid is the biocompatible and environment-friendly organic acid with excellent chelating ability of heavy metal ions due to it contains 6 phosphate groups. In this study, the PU/phytic acid nanofibrous membrane has been successfully produced by electrospinning which was used for Pb 2+ removal. Though phytic acid would improve the hydrophilicity and reduce the mechanical properties to a certain extent, the phytic acid-modified PU nanofibrous membrane still possessed excellent mechanical properties. The PU/phytic acid nanofibrous membrane achieved the highest adsorption capacity (136.52 mg/g) of Pb 2+ under the condition of the pH of Pb 2+ solution was 6 and the adsorption temperature and time were 20°C and 10 h which was over 6 times higher the unmodified one's (21.06 mg/g). These results demonstrated that the electrospun PU/phytic acid nanofibrous membrane could obtain high adsorption capacity of Pb 2+ and it would achieve the potential application in the fields of the removal of heavy metal ions. GRAPHICAL ABSTRACT: UF0001