Recent Advances of Magnetite (Fe3O4)-Based Magnetic Materials in Catalytic Applications
Round 1
Reviewer 1 Report
The current work focuses on the recent advances of Fe3O4-based magnetic materials in catalytic applications. The author’s great effort into the review, but some issues should be addressed.
Generally, when the reader wants to search related to magnetite he will write words, not chemical structures. So it was very strange that in the current review, there was no word “magnetite”. It is highly recommended to include it and mixed between magnetite and Fe3O4 to be available and appear to the reader when he searches for it.
Abstract
The first appearance of “Fe3O4’ should have a full definition e.g. Magnetite (Fe3O4)
First appearance abbreviation e.g. NPs should have a full definition
Introduction
- The introduction provides sufficient background and the most relevant references are included.
- The toxicity of catalysts for water treatment applications and cancer treatment is essential and should be clear. A subsection related to toxicity should be inserted to clear this point.
- There is a felt lack of critical assessments by the authors. The authors did not mention the research gap between the previously reported articles and the present situation. In each subsection application, authors should incorporate their views to mold the research in a new direction.
Conclusion and future perspective
- Conclusion and future perspective are very general information. Please rephrase it with the main outputs.
Moderate editing of English language
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
This is a very good and necessary review article, and it can be recommended for publication after clarification / improvement of some ambiguities.
1. Page 2. Paragraph 2. Speaking of Fe3O4 oxide nanoparticles, the role of additives/dopants should also be mentioned. See, for example, few recent MDPI papers and references therein:
Serga, V et al. Impact of Gadolinium on the Structure and Magnetic Properties of Nanocrystalline Powders of Iron Oxides Produced by the Extraction-Pyrolytic Method. Materials 2020, 13, 4147. https://doi.org/10.3390/ma13184147
Wang, D.; et al. Ni-Pd-Incorporated Fe3O4 Yolk-Shelled Nanospheres as Efficient Magnetically Recyclable Catalysts for Reduction of N-Containing Unsaturated Compounds. Catalysts 2023, 13, 190. https://doi.org/10.3390/catal13010190
2. Page 3. Where applications are mentioned, it would be useful to pay attention to the following:
Kokina, I.; et al . Genotoxic Evaluation of Fe3O4 Nanoparticles in Different Three Barley (Hordeum vulgare L.) Genotypes to Explore the Stress-Resistant Molecules. Molecules 2021, 26, 6710. https://doi.org/10.3390/molecules26216710
3. The authors presented interesting data in the form of a compilation in the form of two tables, but it seems that at the beginning of the article one more table would be useful, namely with the main characteristics of the bulk and nano- Fe3O4.
4. Finally, an additional paragraph on the methods for obtaining Fe3O4 would be extremely useful, especially if there were also information on the achievable sizes of this oxide.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
