Oxygen-Deficient Engineering for Perovskite Oxides in the Application of AOPs: Regulation, Detection, and Reduction Mechanism

Round 1

Reviewer 1 Report

In this manuscript, the authors describe methods for detecting oxygen vacancies in perovskite materials and the significance of oxygen vacancies for various advanced oxidation processes. Methods for regulating oxygen vacancies in chalcogenide materials have been summarized. The reviewer thinks this work can be accepted for publication after solving the following minor issues

1.     All images from others need to be clearly referenced in the image name.

2.     The use of terms needs to be precise. For example, "the activation energy of the catalyst" in page 5, "fireworks treatment" in page 8, etc. are inappropriate expressions.

3.     Section 4.3 is entitled "Electron microscope", but KPFM is a type of atomic force microscope, and its principle is completely different. This part of the discussion needs to be revised.

Comments for author File: Comments.pdf

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

1. Check the author list, the last author's name seems to be missed.

2.  The definition of OVs should be in the first place.

3. There are many parameters for OVs, e.g. concentration, distribution, valence state, etc. The authors may add more discussion on these properties. In the method part, the authors only introduce various techniques to produce OVs in perovskites, but lacking of a comparison among these techiques.

4. In the "Technologies for detecting oxygen vacancies", it seems that OVs can only be determined qualitively. Discussion may be added to describe how to quantitatively determine OVs.

5. OVs are defects, are they stable? How about the stability and lifetime of perovskite with OVs as catalyst?

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

In this paper, the basic knowledge of generating oxygen vacancies (OVs) in perovskite was given and the strategies to detect OVs were highlighted. The focus was on improving OVs of perovskites for the performance of catalyst in AOPs. This review would help to understand the mechanism of OVs in perovskite promoting degradation of organic pollutants in AOPs. I recommend the acceptance for publication in the journal after minor revision.

1. What is oxygen vacancy, and how does oxygen vacancy change in perovskite?

2.  How does oxygen vacancy enhance the catalytic activity of perovskite in advanced oxidation process?

3. Some tense and grammar problems in the article need to be modified. Such as “The operation was simple and has obvious effect on improving the properties of materials. ”

4. The name of the picture tag should be uniform, whether to add parentheses.

5. The beauty and clarity of  Picture 1(a) in the manuscript need to be further improved.

6. It is suggested to mark specific values at extreme points in some figures.

Author Response

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Author Response File: Author Response.pdf