Innovative Photocatalytic Reactor for Sustainable Industrial Water Decontamination: Utilizing 3D-Printed Components and Silica-Titania Trilayer Coatings
, Michalis K. Arfanis 1,2, Tadej Stepišnik Perdih 2, Simos Malamis 2, Dimitrios Iatrou 3, George Em. Romanos 1 and Polycarpos Falaras 1,*Round 1
Reviewer 1 Report
Comments and Suggestions for Authors
The preparation method of the immobilized catalyst seems promising.
My questions after reading the article:
Does the TOC value of the model compound also decrease during photodegradation? Was the change in the TOC content of the reaction mixture investigated? How long does it take to achieve full mineralization? I missed the catalyst recycling study!
How does the surface of the catalyst change during use, i.e. do the cracks continue to grow? When using the catalyst, is it not necessary to take into account the release of organic matter from the grid? This can be checked with a simple TOC measurement.
Comments on the Quality of English Language
The language of the article is correct.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for Authors
As often happens when materials with photocatalytic properties are presented, the characterization of the material is very extensive but its photocatalytic activity is very poorly tested. This work is no exception, therefore a series of improvements are suggested in the experiments carried out to demonstrate the touchalytic properties of the material.
- In te accelerated aging test the authors exposed the system to UVA radiation during 24 hours. ¿Can the authors provide information about the specific range of radiation used and the irradiance value expressed in W/m2?
- Can the authors briefly describe the black box photoreactor? Wavelenght and irradiance are needed
- pH of the solution and concentration of the model pollutant are missing
- The monitoring of a pollutant following the absorbance variations of an spectrum band is not very accurate since one of the by-prodults could absorb in this band
- Direct photolysis of the pollutant should be tested
- Evolution of pH of the solution is an easy way to prove the formation of oxydized by-products (organic acids) without employing other analytical methods
- The addition of a radical scavenger can give light about the species involved in the degradation process
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 2 Report
Comments and Suggestions for Authors
The reviewer would like to congratulate the authors for their work correcting and incorporating the reviewers' suggestions.
