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Peer-Review Record

Shell of Viviparid Snail as an Eco-Friendly Corrosion Inhibitor for Carbon Steel in 1 M HCl

Coatings 2023, 13(7), 1136; https://doi.org/10.3390/coatings13071136
by Qihui Wang 1,*, Chongkang Zhao 1, Huahao Zheng 1, Qi Zhang 1, Xing Zhou 1, Ruozhou Wang 1, Zhitao Yan 1,*, Yi Sun 1 and Xueming Li 2
Reviewer 1:
Reviewer 2:
Reviewer 3:
Coatings 2023, 13(7), 1136; https://doi.org/10.3390/coatings13071136
Submission received: 2 June 2023 / Revised: 12 June 2023 / Accepted: 21 June 2023 / Published: 22 June 2023
(This article belongs to the Special Issue Research and Application of Biomass Corrosion Inhibitors)

Round 1

Reviewer 1 Report

A hydrolysis method and the corrosion inhibition of carbon steel was investigated in the paper. The performed HPLC and FTIR analysis proved that the main component of the shell of viviparid snail extract is composed of 15 various amino acids. The electrochemical and surface analysis indicates that the extract is a 16 hybrid corrosion inhibitor with the great corrosion inhibition efficiency of 95.23%. The adsorption isotherms, quantum chemistry and molecular dynamics simulations were used in this analysis. The experiments and theoretical calculations were made. The results of the theoretical calculations obtained sufficient agreement with the experiments.

My comments concern:

1.It is advisable to develop a separate list of used symbols – abbreviations.

2.No equation 13.

3.In Equation 12, there is an error Iin - incomplete symbol.

4.Line 168 – s?

5. What instruments were used for the experimental studies? Why such boundary conditions and ranges of variability of the examined parameters were adopted?

6. Not all symbols in formulas (16) to (21) are explained.

7. The sentence in Line 300 seems to be corrected.

English language sufficient to publish the article.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

The article is scientifically good with a need for some english revision like in the second line in introductio:

Thanks to its high ......,  this is not good scientific expression and others revise well.

In impedance part, you said adsorption layer on the surface of the CS, .....

what is the layer composition clarify?.

Try to precise the discussion for the films formed.

The conclusion is not supported with results, correct.

good

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 3 Report

Please address all comments in the attached file.

Comments for author File: Comments.pdf


Author Response

Please see the attachment.

Author Response File: Author Response.pdf

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