评价黄素基电子穿梭在腐蚀中的重要性

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Science Pub Date : 2025-05-01 Epub Date: 2025-02-14 DOI:10.1016/j.corsci.2025.112782

Peiyu Ma , Di Wang , Dake Xu , Derek R. Lovley

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引用次数: 0

摘要

黄素对铁金属的微生物腐蚀速度更快，这导致了人们普遍认为黄素是细胞外金属到微生物电子转移的电子穿梭器。对这种可能性的直接检验表明，从Fe0或X80碳钢到黄素或腐殖酸类似物蒽醌-2,6-二磺酸盐（AQDS）的电子转移比质子还原到H2的速度慢几个数量级。不锈钢没有减少穿梭机。电子梭子不能作为硫酸盐还原的电子给体。核黄素促进了普通Desulfovibrio vulgaris在H2上的生长，表明添加黄素的主要作用是作为营养物质。

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Evaluating the importance of flavin-based electron shuttling in corrosion

Faster microbial corrosion of ferrous metals with flavin amendments has led to the common perception that flavins function as an electron shuttle for extracellular metal-to-microbe electron transfer. Direct examination of this possibility revealed that electron transfer from Fe⁰ or X80 carbon steel to flavins or the humic acid analogue anthraquinone-2,6-disulfonate (AQDS) was orders of magnitude slower than proton reduction to H₂. Stainless steel did not reduce shuttles. Electron shuttles could not serve as the electron donor for sulfate reduction. Riboflavin enhanced Desulfovibrio vulgaris growth on H₂, suggesting that the primary impact of added flavins is acting as a nutrient.

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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.