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无形TiOx-涂层表面通过实验室微观宇宙和现场研究对微型和宏观污染的有效性
Lidita Khandeparker1, Dattesh V Desai1, Ravi Teja Mittireddi2
1Biological Oceanography Division, CSIR - National Institute of Oceanography, Goa, India.
Biofouling
|November 15, 2023
概括
不钢 (SS316L) 上的氧化 (TiOx) 涂层减少了微型污染,而未涂层的苏打石灰玻璃 (SLG) 则防止了宏观污染. TiOx改变了表面特性,影响了生物膜社区.
科学领域:
- 材料科学 材料科学 材料科学
- 海洋生物学 海洋生物学
- 环境科学 环境科学
背景情况:
- 生物污染在海洋环境中是一个重大挑战,影响材料性能和运营效率.
- 为了减轻生物污染,正在探索对苏打石灰玻璃 (SLG) 和不钢 (SS316L) 等材料的表面修改.
- 氧化 (TiOx) 涂层正在研究其潜在的抗性质.
研究的目的:
- 评估TiOx涂层SLG和SS316L在实验室和现场条件下对微型和宏型污染的有效性.
- 了解TiOx涂层如何改变表面特性并影响生物膜的形成.
- 为了确定观察到的抗效应背后的潜在机制.
主要方法:
- 实验室微观宇宙研究使用自然生物膜,藻 (Navicula sp. ) 和5天的细菌生物膜.
- 在30天内对TiOx涂层和未涂层SLG和SS316L进行实地观测.
- 测量接触角,以评估表面的水友性/防水性.
- 生物膜社区结构的分析.
主要成果:
- 氧涂层改变了表面接触角度,使SS316L更具水友性,SLG更具疏水性.
- 涂有TiOx的SS316L呈现出最小的微污染.
- 没有涂层的SLG在防止宏观污染方面表现出显著的有效性.
- 高丰富的动态细菌与减少的宏观污染相关.
结论:
- 根据基板 (SS316L与SLG) 的不同,TiOx涂层对微型和宏型污染有不同的影响.
- 通过TiOx改变表面性能会影响生物膜的组成和防腐效果.
- 需要对生物化学途径进行进一步的研究,以充分阐明抗菌机制.
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