Three-dimensional flower-like shaped Bi5O7I particles incorporation zwitterionic fluorinated polymers with synergistic hydration-photocatalytic for enhanced marine antifouling performance

J Hazard Mater. 2020 May 5:389:121854. doi: 10.1016/j.jhazmat.2019.121854. Epub 2019 Dec 10.

Abstract

Herein, several novel composite films consisting of three-dimensional (3D) Bi5O7I flower-like shaped microsphere and zwitterionic fluorinated polymer (ZFP) were successfully fabricated with the aim of achieving high anti-fouling performance. The prepared Bi5O7I flower-like shaped microsphere particles with diameters in the range of 2∼3 μm were uniformly distributed on the surface and in the internal of ZFP. Benefiting from the hydration layer formed by the ZFP and the efficient photocatalytic performance of Bi5O7I flower-like microsphere, the resultant optimized Bi5O7I/ZFP composite film exhibited an excellent diatom anti-settling performance and a high antibacterial rate of 99.09% and 99.66% towards Escherichia coli and Staphylococcus aureus. In addition, the composite films possessed the strengthened visible light absorption, the effectively separation and transfer of the photo-induced electrons and holes, the large number of hydroxyl (OH) radicals and superoxide radicals (O2-) all in Bi5O7I/ZFP systems, all of which were beneficial for the photocatalytic antifouling activity. More importantly, the synergistic hydration-photocatalytic effect of the Bi5O7I/ZFP composite films are answerable for the improvement of the antifouling property compared to the control. Thus, the synergistic hydration-photocatalytic contribution of Bi5O7I/ZFP composite film will shows promise for potential application in marine antifouling.

Keywords: Bi(5)O(7)I; Marine antifouling; Photocatalytic; Zwitterionic fluorinated polymers.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents* / chemistry
  • Anti-Bacterial Agents* / radiation effects
  • Biofouling*
  • Bismuth* / chemistry
  • Catalysis
  • Diatoms
  • Escherichia coli
  • Fluorocarbon Polymers* / chemistry
  • Fluorocarbon Polymers* / radiation effects
  • Hydroxides / chemistry
  • Iodides* / chemistry
  • Iodides* / radiation effects
  • Light*
  • Microspheres
  • Staphylococcus aureus
  • Superoxides / chemistry

Substances

  • Anti-Bacterial Agents
  • Fluorocarbon Polymers
  • Hydroxides
  • Iodides
  • Superoxides
  • hydroxide ion
  • Bismuth