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Corrosion inhibition of pure iron by Eurohypnum leptothallum extract in 0.5 mol L−1 H2SO4: an experimental and GC-MS based study

  • Xuxiang Wang

    Xuxiang Wang is a senior graduate student who has published one SCI and participated in the review process. His research interests include organic chemistry, materials chemistry, and materials corrosion and protection.

         , Fuyan Wang

    Fuyan Wang is a current senior undergraduate student with research interests and directions in corrosion and protection.

         , Xianyu Pan

    Xianyu Pan is a current senior undergraduate student with research interests and directions in corrosion and protection.

         , Jing Hu

    Jing Hu is a current senior undergraduate student with research interests and directions in corrosion and protection.

         and Jing Liu

    Jing Liu is a Master’s degree holder and Ph. Her main research interests are preparation and characterization of metallic structural materials, and bio-wear corrosion of titanium alloys. Jing Liu has published more than 50 papers and 12 authorized patents.

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Published/Copyright: December 5, 2023
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Tenside Surfactants Detergents
From the journal Tenside Surfactants Detergents Volume 61 Issue 1

Abstract

In this work, the functional groups of Eurohypnum leptothallum extract (ELE) were extracted by aqueous immersion and identified by FTIR. The corrosion inhibitory effect of ELE as a natural plant corrosion inhibitor on pure iron in 0.5 mol L−1 H2SO4 solution was investigated by test methods such as the weight loss method, electrochemical behaviour and detection of metal surface topography. The results show that ELE has a positive inhibitory effect on the corrosion behaviour of pure iron in 0.5 mol L−1 H2SO4 solution, and the higher the concentration of ELE, the greater the corrosion inhibitory effect. It can still reach 83.97 % at high temperatures. The results of SEM examination and contact angle measurements show that the corrosion degree of the metal decreases significantly after the additon of ELE and that the hydrophobicity of the metal surface increases. The adsorption of ELE on the surface of pure iron tends to isothermal Langmuir adsorption and, as a mixed corrosion inhibitor, the charge transfer resistance of the system increases significantly and the capacitance value of the electrical double layer decreases significantly.

Keywords: Eurohypnum leptothallum ; plant corrosion inhibitor; pure iron; H2SO4; Langmuir adsorption
Correspondence author: Jing Liu, College of Materials and Architectural Engineering, Guizhou Normal University, Guiyang, China, E-mail:

Xuxiang Wang and Fuyan Wang share first authorship.

About the authors

Xuxiang Wang

Xuxiang Wang is a senior graduate student who has published one SCI and participated in the review process. His research interests include organic chemistry, materials chemistry, and materials corrosion and protection.

Fuyan Wang

Fuyan Wang is a current senior undergraduate student with research interests and directions in corrosion and protection.

Xianyu Pan

Xianyu Pan is a current senior undergraduate student with research interests and directions in corrosion and protection.

Jing Hu

Jing Hu is a current senior undergraduate student with research interests and directions in corrosion and protection.

Jing Liu

Jing Liu is a Master’s degree holder and Ph. Her main research interests are preparation and characterization of metallic structural materials, and bio-wear corrosion of titanium alloys. Jing Liu has published more than 50 papers and 12 authorized patents.

  1. Research ethics: Not applicable.

  2. Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: The authors state no conflict of interest.

  4. Research funding: This work is supported by Guizhou Normal University 2022 “Innovation and Entrepreneurship Training Programme for University Students”: Study on the Corrosion Inhibition of Iron in Sulphuric Acid by Natural Plants (202210663079), and Guizhou Provincial Department of Science and Technology supports the project of the Guizhou Science and Technology Fund, Qiankehejichu - ZK[2023]-250.

  5. Data availability: The raw data can be obtained on request from the corresponding author.

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Received: 2023-08-08
Accepted: 2023-09-01
Published Online: 2023-12-05
Published in Print: 2024-01-29

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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https://doi.org/10.1515/tsd-2023-2553
Keywords for this article
Eurohypnum leptothallum; plant corrosion inhibitor; pure iron; H2SO4; Langmuir adsorption

Articles in the same Issue

  1. Frontmatter
  2. Bis-Quaternary Ammonium Salts
  3. A novel approach to mixed micelles formation: study the interactions between bis-quaternary ammonium salts and nonionic surfactant Triton X-100
  4. Applications
  5. Brevity is the soul of wit – how time, temperature and detergent choice impact the cleaning performance in domestic dishwashers
  6. The preparation of a novel modified chitosan: application to the removal of lead and cephalexin
  7. Removal of acid dye from wastewater by cloud point extraction and regeneration of surfactant by pH regulation
  8. Effect of glauconite and SLS surfactant on phosphate and calcite rheology
  9. Physical Chemistry
  10. Iterative evaluation of micellar and thermodynamic properties of 12-2-12 in 1 % BSA aqueous solution in the presence of organic solvents and temperature
  11. Novel Surfactants
  12. Corrosion inhibition of pure iron by Eurohypnum leptothallum extract in 0.5 mol L−1 H2SO4: an experimental and GC-MS based study
  13. Study on rheology of a novel UV-light sensitive trimeric anionic–cationic surfactant/trans-o-methoxycinnamic acid micellar system
  14. Biosurfactants
  15. An overview on trehalolipids: a promising eco-friendly bio-surfactant
  16. A mini review on synthetic and biosurfactants: origin and structure, physicochemical properties, applications, cost of production, toxicity, biodegradability and environmental effects
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