群体感应对硫酸盐还原菌生物膜增强石墨烯包覆铜腐蚀的间接影响

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-04-30 DOI:10.1016/j.corsci.2025.112988

Ramesh Devadig , Vaibhav Handa , Jawaharraj Kalimuthu , Suvarna N.L. Talluri , Saurabh Sudha Dhiman , Tingyue Gu , Venkataramana Gadhamshetty

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引用次数: 0

摘要

石墨烯作为一种非侵入性涂层被广泛研究，以防止微生物生物膜的腐蚀，但其对群体感应（QS）调节的定植的脆弱性尚不清楚。本研究通过QS机制研究了初始生物膜形成和微生物腐蚀对石墨烯包覆铜（Gr/Cu）的影响。外源性酰基-同丝氨酸内酯（AHLs, 20 ppm w/v）使无根细胞附着加倍，耐腐蚀性降低四倍，重量减轻三倍。转录组学分析显示，qs相关基因上调了86% %，包括与附着和外多糖合成相关的基因。这些发现表明QS在促进SRB生物膜和加速腐蚀方面具有间接而重要的作用。

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Indirect impact of quorum sensing on corrosion of graphene-coated copper via sulfate-reducing bacteria biofilm enhancement

Graphene is widely explored as a non-invasive coating to prevent corrosion by microbial biofilms, yet its vulnerability to quorum sensing (QS)-regulated colonization remains unclear. This study presents the effects of initial biofilm formation and microbial corrosion on graphene-coated copper (Gr/Cu) via QS mechanisms. Exogenous acyl-homoserine lactones (AHLs, 20 ppm w/v) doubled sessile cell attachment and reduced corrosion resistance fourfold, corroborated by a threefold increase in weight loss. Transcriptomic analysis revealed 86 % upregulation of QS-related genes, including those linked to attachment and exopolysaccharide synthesis. These findings demonstrate an indirect yet significant role of QS in promoting SRB biofilms and accelerating corrosion.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.