Pd/C-Based Sensor for Gas Sensing in Transformer Oil
Round 1
Reviewer 1 Report
Improving material gas sensor performance through technical strategies such as morphology modification, doping with noble metals or metal oxides, and adding catalysts has been shown to be an important technical tool for improving material gas sensor performance. In this Communication, the authors used Pd/C as a gas-sensing material to study the effect on the gas-sensing performance by appropriate modification of Pd and carbon hosts.
The paper is well and clearly written. I recommend its publication after minor corrections. The introduction should be improved by a better review of the literature related to the detection of dissolved gas in transformer oil. Additionally, merge Figures 3, 4 and 5 into one figure that will have parts a), b) and c). In the same way, combine Figures 6, 7 and 8 into one figure.
The manuscript will improve substantially if it is reviewed by someone whose native language is English.
Author Response
We are very grateful for your recognition of our work. We have revised and marked in the manuscript. The point-to-point responses to your valuable comments are listed in "Response to Editor and Reviewers".
Author Response File: 
Author Response.pdf
Reviewer 2 Report
This manuscript deals with the Pd-based gas sensor prepared by various methods. The results are quite interesting, but multiple questions were raised while reading this paper:
1) Why the survey XPS spectra were not presented? Why no N1s spectrum for Pb/NC?
2) The authors multiple times claimed that Pd0 were inhibited by Nitrogen, but no N1s...
3) The Pd0 contribution, metallic Pd should have assymetric shape line, very assymetric, due to metallic nature
4) Why Pd-NC is much better than Pd/C? Their Pd spectra are similiar
5) Finally, please provide all survey spectra and atomic percentages.
English is fine
Author Response
We are very grateful for your recognition of our work. We have revised and marked in the manuscript. The point-to-point responses to your valuable comments are listed in "Response to Editor and Reviewers".
Author Response File: Author Response.pdf
Round 2
Reviewer 2 Report
The authors have made significant improvements, but they did not answered to my question regarding the symmetry of Pd0 peak. The matallic peak is usually strongly asymmetric, and the authors have wrote long discussion about it in the answers. But the mail point is that the Pd0 contribution in your fits is not asymmetric, why?
One small additional comment, round your at% to 1st decimal, second decimal make no sense due tp XPS accuracy limitations.
English is fine
Author Response
We are very grateful for your recognition of our work. We have revised and marked in the manuscript. The point-to-point responses to your valuable comments are listed in "Response to Editor and Reviewers".
Author Response File: Author Response.pdf
