WIT Press


Estimation Of NOx Deposition Velocities For Selected Commercial Photocatalytic Products

Price

Free (open access)

Paper DOI

10.2495/SD150642

Volume

168

Pages

12

Page Range

729 - 740

Published

2015

Size

364 kb

Author(s)

M. Palacios, L. Núñez, M. Pujadas, J. Fernández-Pampillón, M. Germán, B. S. Sánchez, J. L. Santiago, A. Martilli, S. Suárez, B. S. Cabrero

Abstract

The photocatalytic degradation of nitrogen oxides (NOx) employing a wide variety of different materials with titanium dioxide is studied experimentally following diverse approaches; both laboratory tests as ambient air experiments. Then, different approximations are applied to estimate NOx deposition velocities by using the experimental data obtained for the most efficient photocatalytic materials under study. Estimates for NO are of the same order of magnitude but could differ significantly depending on the test or experiment and the numerical method followed for their calculation. Estimates for NO2 could be only inferred from ambient air measurements, giving values of one order the magnitude lower than those for NO.

Keywords

heterogeneous photocatalysis, photocatalytic materials, NOx deposition velocities, NOx pollution, titanium dioxide