Insights into Marine Biofouling: Interaction Mechanism between MoS2 Electrode and Typical Marine Bacteria

作     者：He, Yizhou Wu, Xudong Hu, Mao Yang, Guoling He, Rong Chen, Xiaoming Li, Xiaoan Wang, Qing Zhu, Wenkun 

作者机构：School of Life Science and Engineering Southwest University of Science and Technology Sichuan Mianyang621010 China State Key Laboratory of Environment-friendly Energy Materials School of National Defence Science & Technology National Collaborative Innovation Center for Nuclear Waste and Environmental Safety Nuclear Waste and Environmental Safety Key Laboratory of Defense Southwest University of Science and Technology Mianyang621010 China Chengdu Institute of Research and Innovation Southwest University of Science and Technology Chengdu610000 China  Mianyang621010 China 

出 版 物：《SSRN》 

年 卷 期：2024年

核心收录：

主　　题：Molybdenum compounds 

摘      要：Electrochemical extraction of uranium from seawater is an attractive technology, but its biofouling problem cause by marine bacteria remains an obstacle for application. This paper investigates the interaction details of marine bacteria and MoS2 electrode with and without the current applying. The results indicate that MoS2 exhibits outstanding resistance to marine bacteria for they can cause lipid peroxidation and even cell lysis. The interaction of bacteria and MoS2 electrode results in microbial biofilm coating and precipitation of minerals. By using the biofilm staining assay, we find that microbial biofilms on the electrode surface can be largely removed by a short-term strong current. Besides, the combine effects of current applying and bacteria coating could stimulate the dissolution of Mo elements in the electrode. Metabolomic analyses reveal changes in glycerophospholipid metabolism, nucleotide metabolism and amino acid metabolism, which imply the raised oxidation-reduction potential cause by oxidative stress may contribute to the Mo dissolution. Our studies will be helpful for the comprehensive understanding of marine biofouling of electrochemical materials. © 2024, The Authors. All rights reserved.