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[EN] The combination of kinetic and spectroscopic tools has become a key scientific methodology for the understanding of catalytic behavior but its application in photocatalysis has inherent difficulties due to the nature of the energy source of the reaction. This review article provides an overview of its use by, first, presenting mechanistically derived kinetic formulations and spectroscopic data handling methods including intrinsic expressions for light and, second, highlighting representative examples of application. To do it we consider universal catalytic systems, particularly (although not exclusively) titania-based materials, and the most frequent hole and/or electron triggered reaction schemes. This review also provides a general framework to pave the way for the future progress of the spectro-kinetic approach in the photocatalysis area. A. K., M. J. M.-B. and M. F.-G. thank MINECO (Spain) project ENE2016-77798-C4-1-R for financial support. M. J. M.-B. thanks MINECO for the award of postdoctoral JdC contract (Ref. FJCI- 2016-29014). O. M. A. and M. M. B. thank Universidad Nacional del Litoral (UNL, PIC50420150100009LI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, PIP-2015 0100093), and Agencia Nacional de Promoción Científica yTecnológica (ANPCyT, PICT-2015-2651) of Argentina for financial support.

Trabajo presentado en el 8th European Meeting on Solar Chemistry and Photocatalysis, celebrado en Salónica (Grecia) del 25 al 28 de Junio de 2014., The photocatalytic activity under UV and visible irradiation of a series of composite CeO2-TiO2 was evaluated using acetaldehyde as a model pollutant. The activities of three composite catalysts are compared by means of efficiency parameters. To this end, the lamps emission properties as well as the radiation field-catalysts interaction inside the reactor were modelled and numerically calculated. The stability of the systems under reaction conditions was also studied. Overall, the results show that the composite containing 2.5 CeO2 mol% outperforms the titania nanoreference by a factor of at least 2. This evidences the potential of the CeO2-TiO2 composites, a highly active and stable system, under sunlight illumination conditions., M. J. Muñoz-Batista and A. Kubacka thank MINECO for support thought, respectively, the predoctoral FPI and postdoctoral “Ramón y Cajal” programs. Financial support by MINECO is also acknowledged (project CTQ2010- 14872/BQU). Also, the authors acknowledge the financial support from the Universidad Nacional del Litoral, Agencia Nacional de Promoción Científica y Tecnológica, and Consejo Nacional de Investigaciones Científicas y Técnicas of Argentina.