Abstract

The application of electric fields to conductive coatings is an environmentally friendly way to reduce biofilm formation. In particular alternating potentials (APs) have received increasing attention in recent studies. Here, an electrochemical rotating disk setup for dynamic field exposure experiments was developed to study how APs alter the attachment of fouling organisms in a multispecies ocean environment. A specific focus of the device design was proper integration of the potentiostat in the strongly corroding saltwater environment. The effect of APs on the accumulation of fouling organisms in short term field exposures was studied. Potentials on conductive gold surfaces were periodically switched between −0.3 V and 0.3 V or between −0.8 V and 0.6 V at a frequency of 0.5 Hz. APs were capable of significantly reducing the attachment of marine fouling organisms compared with the conductive samples immersed at open circuit potentials.

摘要

将电场应用于导电涂层是减少生物膜形成的一种环保方式。特别是交变电位 (APs) 在最近的研究中受到越来越多的关注。在这里，开发了一种用于动态场暴露实验的电化学旋转盘装置，以研究 AP 如何改变多物种海洋环境中污染生物的附着。设备设计的一个具体重点是在强烈腐蚀的盐水环境中正确集成恒电位仪。研究了 APs 对短期野外暴露中污垢生物积累的影响。导电金表面上的电位以 0.5 Hz 的频率在 -0.3 V 和 0.3 V 之间或在 -0.8 V 和 0.6 V 之间周期性切换。