Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L<sup>-1</sup> hydrochloric acid

Qin Hu; Yubing Qiu; Guoan Zhang; Xingpeng Guo

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Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L^-1 hydrochloric acid

材料与产品工程 | Updated：2026-01-06

- Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L^-1 hydrochloric acid
- Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L^-1 hydrochloric acid
- 中国化学工程学报（英文版） 2015年23卷第8期页码：1408-1415
- Affiliations：
  
  2 Hubei Key Laboratory of Materials Chemistry and Service Failure,Wuhan,China,430074
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2015
- Accepted：
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Qin Hu, Yubing Qiu, Guoan Zhang, 等. Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L^-1 hydrochloric acid[J]. 中国化学工程学报（英文版）, 2015,23(8):1408-1415.

extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L
Qin Hu, Yubing Qiu, Guoan Zhang, 等. Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L^-1 hydrochloric acid[J]. 中国化学工程学报（英文版）, 2015,23(8):1408-1415. DOI：

extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L DOI：

摘要

Abstract

The corrosion inhibition effect of Capsella bursa-pastoris extracts (CBE) for Q235 carbon steels in 1 mol·L

-1

hydrochloric acid solutionwas studied using electrochemical methods

environmental scanning electronmicroscopy (SEM) and Ramanmicroscopy analysis. The polarization plots indicate that CBE serves as an effective

mixedtype inhibitor. Linear polarization resistance shows that increasing CBE concentration and temperature results in increased inhibition efficiency. The highest inhibition efficiency can reach 97% when adding 60 mg·L

-1

CBE

which is better than some reported plant extracts under the similar environment. The adsorption of CBE molecules is found to obey the Langmuir adsorption isotherm. Some thermodynamic and kinetic parameters for the adsorption process

such as the adsorption equilibriumconstant (K)

free energy of adsorption (ΔG

ads

)

activation energy of corrosion reaction (E

) and the heat of adsorption (Q

ads

)

are calculated and discussed. SEM and Raman microscopy analysis also demonstrate the formation of a CBE inhibition film on the metal surface.

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Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L-1 hydrochloric acid

Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L-1 hydrochloric acid

DOI：

摘要

Abstract

关键词

Keywords

references

Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L^-1 hydrochloric acid

Capsella bursa-pastoris extract as an eco-friendly inhibitor on the corrosion of Q235 carbon steels in 1 mol·L^-1 hydrochloric acid