• 文献标题:   Cationic Reduced Graphene Oxide as Self-Aligned Nanofiller in the Epoxy Nanocomposite Coating with Excellent Anticorrosive Performance and Its High Antibacterial Activity
  • 文献类型:   Article
  • 作  者:   LUO XH, ZHONG JW, ZHOU QL, DU S, YUAN S, LIU YL
  • 作者关键词:   cationic reduced graphene oxide, electrodeposition, selfalignment, corrosion protection, selfantibacterial
  • 出版物名称:   ACS APPLIED MATERIALS INTERFACES
  • ISSN:   1944-8244
  • 通讯作者地址:   Hunan Univ
  • 被引频次:   23
  • DOI:   10.1021/acsami.8b01982
  • 出版年:   2018

▎ 摘  要

The design and preparation of an excellent corrosion protection coating is still a grand challenge and is essential for large-scale practical application. Herein, a novel cationic reduced graphene oxide (denoted as RGO-ID+-based epoxy coating was fabricated for corrosion protection. RGO-ID+\ was synthesized by in situ synthesis and salification reaction, which is stable dispersion in water and epoxy latex, and the self-aligned RGO-ID+-treinforced cathodic electrophoretic epoxy nanocomposite coating (denoted as RGO-ID+ coating) at the surface of metal was prepared by electro-deposition. The self-alignment of RGO-ID+ in the coatings is mainly attributed to the electric field force. The significantly enhanced anticorrosion performance of RGO-ID+ coating is proved by a series of electrochemical measurements in different concentrated NaCl solutions and salt spray tests. This superior anticorrosion property benefits from the self-aligned RGO-ID+ nanosheets and the quaternary-N groups present in the RGO-ID+ nanocomposite coating. Interestingly, the RGO-ID+ also exhibits a high antibacterial activity toward Escherichia coli with 83.4 +/- 1.3% antibacterial efficiency, which is attributed to the synergetic effects of RGO-ID+ and the electrostatic attraction and hydrogen bonding between RGO-ID+ and E. coli. This work offers new opportunities for the successful development of effective corrosion protection and self-antibacterial coatings.