期刊
CORROSION SCIENCE
卷 150, 期 -, 页码 296-308出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2019.01.037
关键词
Carbon steel; SEM; XPS; Microbiological corrosion
资金
- National Key Research and Development Program of China [2018YFF0215002]
- National Natural Science Foundation of China [51475177]
- Graduates' Innovation Fund of Huazhong University of Science and Technology [5003013021]
- Independent Innovation Research Fund of Huazhong University of Science and Technology [2017KFYXJJ164]
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education
Anti-bacterial and anti-corrosion properties of sodium pyrithione (SPT) were studied using experimental methods and quantum chemical calculations. SPT at 80 mg/L reduced planktonic and sessile sulfate reducing bacteria (SRB) on X80 carbon steel to undetectable levels. The corrosion inhibition efficiency of SPT against microbiologically influenced corrosion exceeded 80% based on weight loss, which was corroborated by electrochemical data. Molecular modeling showed that SPT molecule provided electrons to the unoccupied orbitals of the Fe surface with a large binding energy of SPT on the Fe (1 1 0) plane, which favored SPT adsorption on the carbon steel.
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