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Carbon nanotube survivability in marine environments and method for biofouling removal
Biofouling ( IF 2.7 ) Pub Date : 2022-08-04 , DOI: 10.1080/08927014.2022.2102904
Jamie E Rossi 1, 2 , Christopher M Schauerman 1, 3 , Colleen C Lawlor 1, 2 , Cory D Cress 4 , Matthew J Ganter 1, 3 , Andrew R Bucossi 1, 5 , Brian J Landi 1, 2
Affiliation  

Abstract

The deep sea survivability and biofouling characteristics of corrosion-resistant bulk carbon nanotubes (CNTs) have been studied after deployment in the Atlantic Ocean over the course of 12 months. Quantification of barnacle count, biofouling density, and non-combustible residue shows cyanoacrylate coatings increase durability and reduce the colonization of biofouling compared to as-received CNTs. Scanning electron microscopy was performed on the biofouled CNTs, and the majority of species were identified as diatoms, consisting of an ordered silica cell wall. Both the as-received and cyanoacrylate-treated CNTs were successfully acid purified to remove biogrowth, leading to complete recovery of tensile strength and electrical transport properties. Thermogravimetric analysis, scanning electron microscopy, contact angle, dynamic mechanical analysis, and current carrying capacity measurements validated the refunctionalization results. Thus, the multifunctional property recovery and enhanced durability confirms that CNTs are electrochemically stable in saltwater environments and are resilient to biofouling conditions in real-world environments after extended exposure.



中文翻译:

碳纳米管在海洋环境中的生存能力和去除生物污垢的方法

摘要

在大西洋中部署 12 个月后,已经研究了耐腐蚀散装碳纳米管 (CNT) 的深海生存能力和生物污染特性。藤壶数量、生物污垢密度和不可燃残留物的量化表明,与收到的 CNT 相比,氰基丙烯酸酯涂层增加了耐用性并减少了生物污垢的定植。对生物污染的 CNT 进行扫描电子显微镜检查,大多数物种被确定为硅藻,由有序的二氧化硅细胞壁组成。原样和氰基丙烯酸酯处理的 CNT 都成功地进行了酸纯化以去除生物生长,从而完全恢复拉伸强度和电传输性能。热重分析、扫描电子显微镜、接触角、动态力学分析、和电流承载能力测量验证了重新功能化的结果。因此,多功能性能恢复和增强的耐久性证实了 CNT 在盐水环境中是电化学稳定的,并且在长时间暴露后对真实环境中的生物污染条件具有弹性。

更新日期:2022-08-04
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