核黄素对希瓦氏菌MR-1引起的纯铁微生物腐蚀的影响
The effect of riboflavin on the microbiologically influenced corrosion of pure iron by Shewanella oneidensis MR-1.
作者信息
Chang Weiwei, Li Yangyang, Li Ziyu, Lou Yuntian, Cui Tianyu, Qian Hongchang, Mol Arjan, Zhang Dawei
机构信息
Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China; National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing 100083, China.
National Materials Corrosion and Protection Data Center, University of Science and Technology Beijing, Beijing 100083, China.
出版信息
Bioelectrochemistry. 2022 Oct;147:108173. doi: 10.1016/j.bioelechem.2022.108173. Epub 2022 Jun 6.
The microbiologically influenced corrosion of pure iron was investigated in the presence of Shewanella oneidensis MR-1 with various levels of exogenous riboflavin (RF) serving as electron shuttles for extracellular electron transfer (EET). With more RF available, a larger and denser phosphate layer was formed on the surface of pure iron by the bacteria. The results of electrochemical impedance spectroscopy, linear polarization resistance and potentiodynamic polarization tests showed that the product layer provided good corrosion protection to the pure iron. Using electrochemical noise, we observed that the addition of RF accelerated the corrosion at the initial stage of immersion, thereby accelerating the deposition of products to form a protective layer subsequently.
在存在作为细胞外电子转移（EET）电子穿梭体的不同水平外源性核黄素（RF）的情况下，研究了希瓦氏菌MR-1对纯铁的微生物影响腐蚀。随着可利用的RF增多，细菌在纯铁表面形成了更大且更致密的磷酸盐层。电化学阻抗谱、线性极化电阻和动电位极化测试结果表明，产物层为纯铁提供了良好的腐蚀防护。使用电化学噪声，我们观察到添加RF在浸泡初期加速了腐蚀，从而随后加速了产物沉积以形成保护层。
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