Commentary on the article: 'A new kinetic model for heterogeneous photocatalysis with titanium dioxide: Case of non-speciflc adsorption considering back reaction, by S. Valencia, F. Catano, L Rios, G. Restrepo and J. Marin, published in Applied Catalysis B: Environmental, 104 (2011) 300-304'

摘要

As claimed in the abstract, S. Valencia et al. say to have developed a "new kinetic model" for heterogeneous photocatalytic reactions, as an alternative to the well known Langmuir-Hinshelwood (L-H) model and to the Direct-Indirect (D-I) model, developed by us during the last 6 years as a comprehensive approach to the photocatalytic oxidation of dissolved substrate species, both chemisorbed and physisorbed onto semiconductor nanoparticles [1-4]. In fact, the "new kinetic model" is a sub case of the D-1 model, developed on the basis of a mechanistic scheme represented by Eqs. (2)-(9) of Section 2, a precise reproduction of the sequence of interfacial reactions sustaining the D-I model (see Section 3 of Ref. [3]). The only difference between the D-I model and the "new