A Critical Analysis of Kinetic Models in Photocatalysis and Some Necessary Improvements

Abstract

A brief critical analysis of kinetic models is presented, particularly the quadratic model (QM), highlighting their strengths and weaknesses. A generalized quadratic model (GQM) is proposed that can accommodate the experimental observation that the degradation rate is non-zero in the limit of zero substrate concentration. The limits of this model are outlined by comparison with a more extended kinetic scheme.

Keywords

Photocatalysis / Kinetic model

Acknowledgments

The author acknowledges support from the Project CH4.0 under the MUR program “Dipartimenti di Eccellenza 2023–2027 (CUP: D13C2200352001)”.

Ethics Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

Not applicable.

Funding

Financial support under the National Recovery and Resilience Plan (NRRP), Mission 4, Component 2, Investment 1.1, Call for tender No. 104 published on 2 February 2022 by the Italian Ministry of University and Research (MUR), funded by the European Union—NextGenerationEU-Project Title Development of an operative procedure for the quantification of nanoplastics and the evaluation of their role in environmental samples—CUP 2022PN4KCS—Grant Assignment Decree No. 104 adopted on 2 February 2022 by the Italian Ministry of Ministry of University and Research (MUR).

Declaration of Competing Interest

The author declares that he has no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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