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by
  • Maged S. Al-Fakeh 1,2,*,
  • Roaa O. Alsaedi 1 and
  • Gadah A. Allazzam 1
  • et al.

Reviewer 1: Anonymous Reviewer 2: Anonymous Reviewer 3: Anonymous

Round 1

Reviewer 1 Report

This paper provided a method for preparing metal nanoparticles from metal polymer precursors, and then characterized its chemical composition and structure. At present, the synthesis and important applications of metal nanoparticles have been extensionally studied. In this paper, no interesting innovation can be found from the preparation methods or the properties of nanoparticles. The introduction of manuscript did not clearly point out the significance of this study; The results and discussion part only described the experimental results, without much deeper discussion and lacked of a reasonable experimental design, for example, as mentioned in the introduction, supplying its degradation of dyes or other properties. The antibacterial properties of metal ions are well known to the people, so it was not necessary to explore their antibacterial properties. The expression of the whole manuscript was repeated and the language was tedious; The chart and table demanded for some supplementary notes, and the figure not beautiful, and the research content is not suitable for coatings. For these reasons, I do not recommend this work for publication in coatings in current state.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

 The work is good and hope next time you will provide details of result.

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

In the introduction section MnO properties is less explained but plenty of applications has been quoted. Why P-ABA is used as substrate even though CdO is more toxic against the suppression of the growth of toxic pathogens?

            The experimental part clearly indicates that CdO and MnO are not obtained instead their complexes with PVA and p-ABA. Then how it justifies the title given by the authors?

            Indexing of peaks is missing in FTIR and XRD patterns.

            Decomposition temperatures should be highlighted in the Thermal analysis.

            CdO exhibits only 5 standard peaks as per the JCPDS card. What are the other peaks observed?

            No spherical nature is observed from the TEM images. Verify. No magnification scale is clearly visible for both the SEM and TEM images.

            The authors quoted that CdO exhibits better antibacterial and antifungal activities. What about the toxicity of cadmium ions released? How it can be rectified?

            There is no mentioning about the role of thermodynamic parameters on the studies performed. What is the necessity of calculating them?

            References are not uniform.

            Representation of figures are very poor.

Author Response

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Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

The manuscript is not revised well as my first-round suggestion, so much mistake and irregular action were still existed. I am sorry to tell your that this manuscript is not suitable to publish in current state after my careful review, details as follow:

  1. The title “Structural, optical characterization, and Antimicrobial of MnO and CdO Nanoparticles by using a calcination method” must be improved, there is a disconformity of the case of the first letter of a word and “optical characterization” was redundant. Additionally, is it reasonable to replace " optical characterization” with “UV-vis”.
  2. The english was poor, and much grammar mistake was not revised, for example, some places use the simple present tense, while others use the simple past tense.
  3. The table should conform to the standard, the upper frame line and the lower frame line should thicker than the middle line. “νO-H”should be “VO-H”.
  4. The results and discussion were only a simple description of the data, lack of in-depth discussion.
  5. References were too old, among of whole reference, the number of which published around 2000 year surpassed ten.

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

The English language can be polished.

Author Response

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Author Response File: Author Response.pdf