Inhibition Effect of Pteris vittata Extractive on the Corrosion of Steel in Hydrochloric Acid Solution

Journal of Chuxiong Normal University ›› 2022, Vol. 37 ›› Issue (3): 45-52.

• Life Science & Chemistry • Previous Articles Next Articles

Inhibition Effect of Pteris vittata Extractive on the Corrosion of Steel in Hydrochloric Acid Solution

Wen Chen

School of Resources, Environment and Chemistry, Chuxiong Normal University, Chuxiong 675000

Received:2021-12-15 Published:2022-06-30
About author:Wen Chen (1979－), doctor , associate professor, mainly engaged in analytical chemistry research. E-mail: chengm@cxtc.edu.cn, Tel.18387294609
Supported by:
Supported by the National Natural Science Foundation of China (No. 2019J0401)

Abstract

Abstract: Pteris vittata extractive （PVE） achieved by immersion was investigated as a corrosion inhibitor for Q235 steel in 1 mol·L^-1 HCl solution by means of the electrochemical methods. Polarization curves results indicated that PVE behaved as an effective mixed-type inhibitor in control of steel corrosion, and the inhibition performance of PVE on Q235 steel was found to be enhanced with the increasing PVE concentration. The analysis of electrochemical impedance spectroscopy implied that the increase of charge transfer resistance of corrosion reaction and the change of the structure of the electric double layer, due to the adsorption of PVE molecules on steel surface. Adsorption behavior studies have shown that the adsorption of PVE molecules conforms to the Langmuir monolayer adsorption model. On average, the adsorption of each extractive molecule will cause more than 3 water molecules to desorb from the steel surface, and there is a repulsive effect among the adsorbed molecules.

Key words: Q235 steel, hydrochloric acid, Pteris vittata extractive, adsorption, inhibition

CLC Number:

TF761

Wen Chen. Inhibition Effect of Pteris vittata Extractive on the Corrosion of Steel in Hydrochloric Acid Solution[J]. Journal of Chuxiong Normal University, 2022, 37(3): 45-52.

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Inhibition Effect of Pteris vittata Extractive on the Corrosion of Steel in Hydrochloric Acid Solution

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