Polypyrrole-Modified Molybdenum Disulfide Nanocomposite Epoxy Coating Inhibits Corrosion of Mild Steel

Round 1

Reviewer 1 Report

The manuscript presents an interesting study about the influence of Polypyrrole-Modified Molybdenum Disulfide on the corrosion characteristics of epoxy coatings. However, the paper needs major revisions before it is processed further, some comments follow:

 Abstract

The abstract mus be improved. The abstract must contain information about:

-        Background: Please highlight the novelty of the study;

-        Methods: Describe briefly the main methods used to obtain and characterize the coating.

-        Results and conclusions: Indicate the main conclusions or interpretations.

 

Introduction

 In the introduction section, a comprehensive and exhaustive review of the state of the art in the field of the study must be provided. Please refer to previous works, and highlight the experiments and results published previously.

The introduction section can be improved. Multiple affirmations aren’t supported by the provided references or by the obtained experimental results. Also, multiple citations have been introduced in bulk form "[1-3]", "[4-6]", "[11-13]", "[16-20]", "[21-23]", "[29-31]" etc. and not distributed in the text in accordance with the affirmations that must be supported. Please introduce citation at a specific position to assure a clear correspondence between the affirmations from the introduction section and the previous publication. Moreover, to avoid this type of citing, please cite review type of studies.

Experimental

Change the name section into Materials and methods

Put more details (parameters used) regarding the XRD and FTIR experiments.

Please introduce also the parameters used for polarization test (Scanning rate, Potential used…)

Results and discussion

Figure 2 must be moved in the experimental section

Figure 1. Add labels to highlight the relevant zones for the readers.

Figure 3. Are many peaks which are not identified. Please write on the figure the corresponding phase for every peak from the XRD patterns.

Subsection 3.2. Compere the FT-IR results with others from the literature, in order to confirm the discussion.

Table 1. It is not enough to analyse just Ecorr and Icorr, the authors must introduce the polarization resistance and corrosion rate and discuss them. Also, this results must be compared with others.

Subsection 3.5. The authors must introduce a table with the values of the parameters in order to be easier to follow the results.

Summary

This section must be replaced with the conclusions section. Add suggestion and limitation.

References

 

Are too many self-citations. Please remove the unnecessary ones. 

Author Response

请参阅附件

Author Response File: Author Response.docx

Reviewer 2 Report

This manuscript (coatings-2376502) was well written and very good, but, it needs to revise carefully.

1.     How can Molybdenum Disulfide promote the protective coating performance, can you suggest any mechanism?

2.     Results will compared with published similar research works

3.     Corrosion protection degree will added in Table 1.

4.     What is importance in the industry

 

 

 

it is ok, just chech again

 

Author Response

Please see the attachment

Author Response File: Author Response.docx

Reviewer 3 Report

I would suggest the following aspects to be considered:

 

The Abstract should not contain abbreviations. 

Title: “Effect of polypyrrole-modified molybdenum disulfide on the corrosion resistance of epoxy coatings”. I would recommend modifying the title in such a way it attracts the attention of readers. For instance: “Nanocomposites for decreasing the corrosion of materials”.

Abstract: I suggest adding a short context of this study.  

Abstract: Define all abbreviations such as MoS2@PPy

Legends to figures: Legends for all figures and tables in the manuscript should present full information about their content so that readers can understand everything without referring to tha main body of the manuscript. It doesn't matter if they take up a lot of written lines. Avoid using abbreviations.

 

Experimental section: Provide full details (experimental conditions). Readers must be able to reproduce all experiments and measurements.

 

There are many typos in this manuscript.

Confusion of figures:  In the main body of the manuscript there is a confusion of figures. For example, Figure 4 has been taken as Figure 2. Please check this and make corrections.

Numerous syntax errors in the following pages make reading difficult and discourage readers from continuing to read.

 

A moderate revision of English is required. Some writing inaccuracies noted

Author Response

Please see the attachment

Author Response File: Author Response.docx

Reviewer 4 Report

“are beginning to be anticipated.” Anticipated for what ? This is unclear

“offers an idea” is weak formulation as a research study cannot offer ideas !

Please revise the English together with a native speaker or professional service

Please define all the acronyms before their first appearance in text i.e “VOC content”

“The deionized water used during the experiments was homemade” please provide details how was produced !

A space between value and units is required “4000rpm” – it should requires checked everywhere in this manuscript

Section 2.2.2. describe in a single phrase all the details. Please shorten it in multiple sentence for easy reading and taking the concept

“EP resin in proportion” please give details about proportion .

Please  how many “A test piece” were produced for this study in order to understand the repeatability

“This may be due to the poor compatibility…” please provide some references to endorse this

Figure 8 is quite common in literature please use some references

The conclusion are very qualitative, it is requested more quantitative details

Some more recent references are required

Poor

Author Response

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Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

The authors addressed all my comments. Therefore, the paper can be published in the present form. 

 

Author Response

Thank you for your comments and help with this article, and I hope it will be published successfully!

Reviewer 4 Report

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