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Methane
Volume 2
Issue 1
10.3390/methane2010003
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Article
Peer-Review Record

Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts under Mild Conditions

Methane 2023, 2(1), 44-55; https://doi.org/10.3390/methane2010003
by Arthur Pignataro Machado, Saulo Amaral Carminati, Eliane Ribeiro Januário, Patricia Silvaino Ferreira, Jorge Moreira Vaz * and Estevam Vitorio Spinacé *
Reviewer 1:
Zi-Rong Tang
Reviewer 2:
Jahangeer Ahmed
Methane 2023, 2(1), 44-55; https://doi.org/10.3390/methane2010003
Submission received: 3 November 2022 / Revised: 5 December 2022 / Accepted: 1 January 2023 / Published: 7 January 2023
(This article belongs to the Special Issue Methane Conversion Technology)

Round 1

Reviewer 1 Report

This is an interesting paper on using Pd-ZnO for light-driven methane conversion. I suggest the paper for publication after proper revisions.

1. The selectivity for all products must be added. Carbon mass balance should be given.

2. Please provide the evidence for detecting the methane radicals.

3. Recent progress in this field is missing.

Catalysis Communications, 2021, 159, 106346

Author Response

The file was attached

Author Response File: Author Response.docx

Reviewer 2 Report

The manuscript entitled “Photocatalytic Methane Conversion over Pd/ZnO Photocatalysts Under Mild Conditions” submitted by Machado et al. in Methan needs to fix the following points:

1. There are some mistakes or typo errors in the text. There is some unnecessary space provided by them in text. The authors should go carefully through the manuscript and fix.

2. HRTEM data should be provided instead of additional TEM images.

3. XPS fitting is missing.

4. I have main concern regarding the stability of the catalysts in term of the structural and morphological changes. Stability of the catalysts should be checked after catalytic reactions. XRD or XPS and microscopic studies of the recovered catalysts are highly recommended.    

Author Response

the file was attached

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

I recommend the revsied paper to publish now.

Author Response

see  attached file

Author Response File: Author Response.pdf

Reviewer 2 Report

I do not understand that why so many TEM images at different scale bar are given. It is better to provide High Resolution TEM image instead of TEM images at various magnifications.

Stability of the catalysts should be checked after catalytic reactions. XRD or XPS and microscopic studies of the recovered catalysts are highly recommended. This is the main concern regarding the stability of the catalysts in term of the structural and morphological changes.

Author Response

see attached file

Author Response File: Author Response.pdf

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