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<p>Microbiologically influenced corrosion (MIC), caused by microorganisms such as sulfate-reducing bacteria (SRB), iron bacteria (FB), and heterotrophic bacteria (TGB), accelerates metal oxidation and damages the protective film of coatings through their metabolic activities. Despite the development of various coatings, those capable of preventing microbiologically influenced corrosion (MIC) in metals remain limited. In this research, we have developed a novel type of coating that combines superhydrophobic and antibacterial characteristics, suppressing biofilm formation and preventing corrosion. Two antibacterial superamphiphobic coatings, termed as FPPDC and FPPTC, were created by synthesizing antibacterial fluorinated silica particles through a sol–gel process and incorporating them with two quaternary ammonium salts, i.e., DMOAP and TMAPS, respectively. The FPPDC coating outperforms the FPPTC counterpart in antibacterial performance, mechanical durability, and corrosion resistance. The FPPDC coating achieves a bactericidal efficiency of 99.99% against sulfate-reducing bacteria, higher than 99.00% for the FPPTC coating. Additionally, the FPPDC coating maintains its superhydrophobicity after 1200 abrasion cycles, while the FPPTC loses this property after 1000 cycles. The FPPDC coating successfully combines fluorinated chains and quaternary ammonium salts to achieve both antibacterial and anticorrosion functions, with excellent mechanical stability, making it suitable for MIC mitigation in oilfield environments. This research paves the way for new possibilities in developing multifunctional coatings.</p>

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A multifunctional superamphiphobic coating with anticorrosion and antibacterial properties

  • 期刊论文

  • 发表日期：

    2026年4月10日

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  • Rong Wei,
  • Yixing Qi,
  • Guang Feng,
  • Juantao Zhang,
  • Juntao Yuan,
  • Naixin Lv,
  • Anqing Fu,
  • Qiuli Zhang

摘要

Microbiologically influenced corrosion (MIC), caused by microorganisms such as sulfate-reducing bacteria (SRB), iron bacteria (FB), and heterotrophic bacteria (TGB), accelerates metal oxidation and damages the protective film of coatings through their metabolic activities. Despite the development of various coatings, those capable of preventing microbiologically influenced corrosion (MIC) in metals remain limited. In this research, we have developed a novel type of coating that combines superhydrophobic and antibacterial characteristics, suppressing biofilm formation and preventing corrosion. Two antibacterial superamphiphobic coatings, termed as FPPDC and FPPTC, were created by synthesizing antibacterial fluorinated silica particles through a sol–gel process and incorporating them with two quaternary ammonium salts, i.e., DMOAP and TMAPS, respectively. The FPPDC coating outperforms the FPPTC counterpart in antibacterial performance, mechanical durability, and corrosion resistance. The FPPDC coating achieves a bactericidal efficiency of 99.99% against sulfate-reducing bacteria, higher than 99.00% for the FPPTC coating. Additionally, the FPPDC coating maintains its superhydrophobicity after 1200 abrasion cycles, while the FPPTC loses this property after 1000 cycles. The FPPDC coating successfully combines fluorinated chains and quaternary ammonium salts to achieve both antibacterial and anticorrosion functions, with excellent mechanical stability, making it suitable for MIC mitigation in oilfield environments. This research paves the way for new possibilities in developing multifunctional coatings.