Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/46329
Title: FTIR study of formic acid interaction with TiO2 and TiO2 doped with Pd and Cu in photocatalytic processes
Authors: Araña, J. 
Garriga i Cabo, C.
Doña-Rodríguez, J. M. 
González-Díaz, O. 
Herrera-Melián, J. A. 
Pérez-Peña, J. 
UNESCO Clasification: 330301 Tecnología de la catálisis
Keywords: Photocatalysis
Formate
Hydroxyl group
S2O82−
H2O2
Issue Date: 2004
Publisher: 0169-4332
Journal: Applied Surface Science 
Abstract: In this study the different processes occurring on the TiO2 and Pd and Cu doped TiO2 surfaces during the photocatalytic formic acid degradation in the presence or absence of S2O82− or H2O2 have been investigated. FTIR studies have shown the relevance of the H-bounded hydroxyl groups. It has been observed that formate molecules interact simultaneously with the dopants and surfacial Ti atoms yielding an intermediate species which plays an important role in the phototacatalytic degradation mechanism. Also, it has been determined that Pd or Cu oxides may act as receptors or transmitters of the TiO2 photogenerated electrons and thus modify the degradation mechanism. Different redox reactions have been proposed according to the obtained results.
URI: http://hdl.handle.net/10553/46329
ISSN: 0169-4332
DOI: 10.1016/j.apsusc.2004.04.039
Source: Applied Surface Science [ISSN 0169-4332], v. 239, p. 60-71
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