In this manuscript, the performance of a ternary composite towards PMS activation in the degradation of different organic contaminants was studied in a batch environment. In this regard, some properties of as-prepared catalysts are characterized and discussed. Also, the effect of several operating parameters on the process performance was assessed to determine optimal conditions. After checking carefully, I noted that the manuscript needs some revisions before it can be accepted for publication.

1- In the title, the authors mentioned “persulfate”, while they used “peroxymonosulfate” in this work. Please revise.
2- The abstract should contain some quantitative information.
3- All abbreviations must be checked carefully.
4- The introduction part needs to be improved with a focus on other methods of activation of PMS (like ultrasonic irradiation, semiconductors, carbon-based catalysts, and electro-chemistry). For further information, please refer to Journal of Environmental Management, 2023, 342, 118242; Environmental Pollution, 2023, 334, 122059.
5- Adsorption-desorption tests must be performed before adding PMS. What is the adsorption capacity of the as-prepared catalyst to eliminate pollutants?
6- What is the pHzpc of the prepared catalyst?? It must be determined and discussion on the effect of pH using pHzpc improved.
7- The authors must explain their work's potential for use in practical applications. The authors do not investigate the process potential in the treatment of real samples such as tap water, raw and treated wastewater, and/or industrial samples. This approach must be evaluated before the manuscript can be accepted for publication.
8- Other reactive species such as electrons, holes, HO2·-, O2·-, and 1O2 might be involved in the degradation process system, but there is no quenching test or EPR characterization to verify your conclusion.
9- The intermediate by-product from TC degradation is not evaluated. In addition, the degradation pathways are missed.
10- In some literatures, SO5- also plays a role in PMS system. It may be better to consider SO5- into the mechanism.
11- Based on the results presented in Fig. 3, what is the synergistic effect between the components of the catalyst and PMS? To well support this section, please refer to Process Safety and Environmental Protection, 2024, 182, pp. 426–442; Journal of Environmental Management, 2023, 329, 117022.
12- The mineralization degree and reaction rate constant of the degradation kinetic can be presented in Table 1 and then discussed.