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<p>The use of antifouling agents is suggested to be a promising method for protecting oceanic instruments from biological contamination. We developed a novel antifouling material doped with capsaicin (CAP) as a filler and montmorillonite (MMT) as a carrier for the practical application of CTD (conductivity, temperature, depth) protection. The optimal parameters for preparing the material were established, and the obtained material achieved the maximum CAP loading capacity of 32.74%. The proposed material exhibited great release properties in acidic environments, which is beneficial for reducing bacterial attachment. Furthermore, the optimal conditions (temperature, flow rate, and pressure in the aquatic environment) for a better release rate of the material were determined through a series of simulation tests in lab. It provided good guidance and basis for practical application of the material. The CAP@MMT composite showed excellent efficiency and effectiveness in preventing the attachment of microorganisms during the four-month marine field tests. In the subsequent experiments, the great properties of the antifouling material were further confirmed by retesting the conductivity of four instruments participating in marine field tests. The measuring errors of CTD protected by the antifouling material are both within 0.01 mS/cm, which is far lower than that of the other two instruments.</p>

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Improving the Antifouling Properties of CTD During the Marine Field Tests: The Use of CAP@MMT Modified with Acid

  • 期刊论文

  • 发表日期：

    2025年4月12日

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  • Yachen Che,
  • Lianxue Wei,
  • Yaqi Diao,
  • Wenjuan Jia,
  • Hongzhi Li

摘要

The use of antifouling agents is suggested to be a promising method for protecting oceanic instruments from biological contamination. We developed a novel antifouling material doped with capsaicin (CAP) as a filler and montmorillonite (MMT) as a carrier for the practical application of CTD (conductivity, temperature, depth) protection. The optimal parameters for preparing the material were established, and the obtained material achieved the maximum CAP loading capacity of 32.74%. The proposed material exhibited great release properties in acidic environments, which is beneficial for reducing bacterial attachment. Furthermore, the optimal conditions (temperature, flow rate, and pressure in the aquatic environment) for a better release rate of the material were determined through a series of simulation tests in lab. It provided good guidance and basis for practical application of the material. The CAP@MMT composite showed excellent efficiency and effectiveness in preventing the attachment of microorganisms during the four-month marine field tests. In the subsequent experiments, the great properties of the antifouling material were further confirmed by retesting the conductivity of four instruments participating in marine field tests. The measuring errors of CTD protected by the antifouling material are both within 0.01 mS/cm, which is far lower than that of the other two instruments.