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Acceleration of corrosion of 304 stainless steel by outward extracellular electron transfer of Pseudomonas aeruginosa biofilm

Journal Article (2022)
Author(s)

Luyao Huang (University of Science and Technology Beijing, Global Energy Interconnection Research Institute Co., Ltd.)

Weiwei Chang (University of Science and Technology Beijing)

Dawei Zhang (University of Science and Technology Beijing)

Ye Huang (Chinese Academy of Sciences)

Z. Li (TU Delft - Team Arjan Mol)

Yuntian Lou (University of Science and Technology Beijing)

Hongchang Qian (University of Science and Technology Beijing)

Chengying Jiang (Chinese Academy of Sciences)

Xiaogang Li (University of Science and Technology Beijing)

J. M C Mol (TU Delft - Team Arjan Mol)

Research Group
Team Arjan Mol
Copyright
© 2022 Luyao Huang, Weiwei Chang, Dawei Zhang, Ye Huang, Z. Li, Yuntian Lou, Hongchang Qian, Chengying Jiang, Xiaogang Li, J.M.C. Mol
DOI related publication
https://doi.org/10.1016/j.corsci.2022.110159
More Info
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Publication Year
2022
Language
English
Copyright
© 2022 Luyao Huang, Weiwei Chang, Dawei Zhang, Ye Huang, Z. Li, Yuntian Lou, Hongchang Qian, Chengying Jiang, Xiaogang Li, J.M.C. Mol
Research Group
Team Arjan Mol
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.@en
Volume number
199
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Abstract

The influence of outward extracellular electron transfer (EET) of Pseudomonas aeruginosa in accelerating corrosion of 304 stainless steel was investigated. With less NO3− available as electron acceptor, P. aeruginosa biofilm accelerated the pitting corrosion. The ICP-MS and XPS results indicated that P. aeruginosa promoted the bioreductive dissolution of iron oxides in the passive film of stainless steel. Using in situ scanning electrochemical microscopy, we established a relationship between this accelerated deterioration of the passive film and the EET process mediated by the conversion of the redox states of pyocyanin secreted by P. aeruginosa.

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