Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences , 7 Nanhai Road, Qingdao 266071, China.
University of the Chinese Academy of Sciences , 19 (Jia) Yuquan Road, Beijing 100039, China.
ACS Appl Mater Interfaces. 2016 Jan 20;8(2):1120-7. doi: 10.1021/acsami.5b08452. Epub 2016 Jan 6.
Microbially influenced corrosion (MIC) accelerates the failure of metal in a marine environment. In this research, slippery lubricant-infused porous surface (SLIPS) was designed on aluminum, and its great potential for inhibiting MIC induced by sulfate-reducing bacteria (SRB) was demonstrated in a simulated marine environment. The inhibition mechanism of SLIPS to MIC was proposed based on its effective roles in the suppression of SRB settlement and isolation effect to corrosive metabolites. The liquid-like property is demonstrated to be the major contributor to the suppression effect of SLIPS to SRB settlement. The effects of environmental factors (static and dynamic conditions) and lubricant type to SRB settlement over SLIPS were also investigated. It was indicated that the as-fabricated SLIPS can inhibit the SRB settlement in both static and dynamic marine conditions, and lubricant type presents a negligible effect on the SRB settlement. These results will provide a series of foundational data for the future practical application of SLIPS in the marine environment, and also a lubricant selecting instruction to construct SLIPS for MIC control.
微生物影响腐蚀 (MIC) 会加速金属在海洋环境中的失效。在这项研究中，设计了一种在铝上的具有自润特性的多孔表面（SLIPS），并在模拟海洋环境中证明了其对硫酸盐还原菌 (SRB) 引起的 MIC 具有很大的抑制潜力。基于 SLIPS 在抑制 SRB 定植和隔离腐蚀性代谢物方面的有效作用，提出了 SLIPS 抑制 MIC 的机制。证明了液态性质是 SLIPS 抑制 SRB 定植的主要贡献因素。还研究了环境因素（静态和动态条件）和润滑剂类型对 SLIPS 上 SRB 定植的影响。结果表明，所制备的 SLIPS 可以抑制静态和动态海洋条件下的 SRB 定植，并且润滑剂类型对 SRB 定植的影响可以忽略不计。这些结果将为未来 SLIPS 在海洋环境中的实际应用提供一系列基础数据，并为构建用于 MIC 控制的 SLIPS 提供润滑剂选择指导。
