Influence of biomacromolecule DNA corrosion inhibitor on carbon steel

•Biomacromolecule DNA was used as a mixed-type corrosion inhibitor.•The corrosion inhibition efficiency of DNA on reached 91.9% in 1M HCl.•Analysis of adsorption mechanism with Langmuir isotherm, FT-IR and XPS.•Structural-property relationship of inhibitors revealed by quantum chemical calculation....

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Bibliographic Details
Published inCorrosion science Vol. 125; pp. 68 - 76
Main Authors Hu, Ke, Zhuang, Jia, Ding, Jiating, Ma, Zhu, Wang, Fang, Zeng, Xianguang
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier Ltd 15.08.2017
Elsevier BV
Subjects
Bacterial corrosion
Carbon steel
Carbon steels
Chemisorption
Corrosion inhibitor
Corrosion inhibitors
Deoxyribonucleic acid
DNA
Mathematical analysis
Molecular structure
Molecules
Quantum chemical calculations
Quantum chemistry
Self-assembly
Weight loss measurement
Chemisorption
Quantum chemical calculations
DNA
Corrosion inhibitor
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Summary:•Biomacromolecule DNA was used as a mixed-type corrosion inhibitor.•The corrosion inhibition efficiency of DNA on reached 91.9% in 1M HCl.•Analysis of adsorption mechanism with Langmuir isotherm, FT-IR and XPS.•Structural-property relationship of inhibitors revealed by quantum chemical calculation. The biological macromolecule DNA was used as green corrosion inhibitor to protect X80 carbon steel against 1M HCl solution, and the corrosion behavior was systematically investigated by weight loss, electrochemical measurements, FTIR, and quantum chemistry calculation et al. The results showed that the maximum inhibition efficiency of compound DNA reached 91.9%. It was found that the chemisorption of DNA inhibitor on carbon steel surface resulted from single-molecular-layer self-assembly. The theoretical calculation verified the relationship between the DNA molecular structure and the corrosion inhibition efficiency. The results further demonstrated that the DNA was a promising environment-friend inhibitor with effective inhibition efficiency.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2017.06.004