Highly selective one-dimensional TiO sub(2-based nanostructures for air treatment applications)

The aim of the present research is to determine the optimum hydrothermal synthesis procedure for using TiO sub(2-based one-dimensional materials as photocatalysts for air treatment applications, in order to enhance their mineralization capacity. The prepared samples were thoroughly characterized by...

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Bibliographic Details
Published in:Applied catalysis. B, Environmental Environmental, 2011-11, Vol.110, p.251-259
Main Authors: Hernandez-Alonso, Maria D, Garcia-Rodriguez, Sergio, Suarez, Silvia, Portela, Raquel, Sanchez, Benigno, Coronado, Juan M
Format: Article
Language:English
Subjects:
Mathematical models
Nanostructure
Nanotubes
Optimization
Photocatalysis
Photocatalysts
Synthesis
Titanium dioxide
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Summary:The aim of the present research is to determine the optimum hydrothermal synthesis procedure for using TiO sub(2-based one-dimensional materials as photocatalysts for air treatment applications, in order to enhance their mineralization capacity. The prepared samples were thoroughly characterized by means of TEM, N) sub(2) adsorption-desorption isotherms, XRD and Raman spectroscopy. Trichloroethylene (TCE) was selected as a convenient model volatile organic compound (VOC) due to its elevated reactivity. In this study, it is described how the selection of the synthesis parameters (TiO sub(2 precursor, hydrothermal treatment conditions, washing procedure or calcination temperature) allows modulating the nanotubes physicochemical characteristics and, thus, photoactivity. The optimization process led to nanotubes with remarkable photocatalytic performance, with high TCE conversion and selectivity to CO) sub(2), which can be favourably compared to that of the benchmark photocatalyst Degussa P25.
ISSN:0926-3373
DOI:10.1016/j.apcatb.2011.09.009