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Updated: Jul 14, 2026

Analyzing the Photo-oxidation of 2-propanol at Indoor Air Level Concentrations Using Field Asymmetric Ion Mobility Spectrometry
Published on: June 14, 2018
Photocatalytic degradation of phenol and phenolic compounds Part I. Adsorption and FTIR study
J Araña1, E Pulido Melián, V M Rodríguez López
1Grupo de Fotocatálisis y Electroquímica Aplicada al Medio-Ambiente (FEAM), Unidad Asociada al Instituto de Ciencia de Materiales de Sevilla, C.S.I.C 35017, Las Palmas, Spain. jaranaesp@hotmail.com
Abstract:
With the goal of predicting the photocatalytic behaviour of different phenolic compounds (catechol, resorcinol, phenol, m-cresol and o-cresol), their adsorption and interaction types with the TiO(2) Degussa P-25 surface were studied. Langmuir and Freundlich isotherms were applied in the adsorption studies. The obtained results indicated that catechol adsorption is much higher than those of the other phenolics and its interaction occurs preferentially through the formation of a catecholate monodentate. Resorcinol and the cresols interact by means of hydrogen bonds through the hydroxyl group, and their adsorption is much lower than that of catechol. Finally, phenol showed an intermediate behaviour, with a Langmuir adsorption constant, K(L), much lower than that of catechol, but a similar interaction. The interaction of the selected molecules with the catalyst surface was evaluated by means of FTIR experiments, which allowed us to determine the probability of OH radical attack to the aromatic ring.
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