Degradation of NO using photocatalytic coatings applied to different substrates

作者：Martinez, Thomas; Bertron, Alexandra^*; Ringot, Erick; Escadeillas, Gilles

来源：Building and Environment, 2011, 46(9): 1808-1816.

DOI：10.1016/j.buildenv.2011.03.001

• Pollution
• NO(x)
• Photocatalysis
• Titanium dioxide
• Coating
• Lasure

This article deals with the degradation of NO present in the air by means of a photocatalytic oxidation process based on TiO(2) nanoparticles incorporated in a polymer-matrix-based coating. The experimental set-up consisted of a flow type reactor adapted from the ISO 22197-1 standard. NO(2) in the gas phase, and nitrate ions adsorbed on the photocatalytic surface were detected as finals products. Various parameters influencing the NO degradation efficiency were studied: the coating composition, the substrate nature, the initial concentration of NO, the polluted air flow rate and the humidity. Compared to glass, the use of mortar as the substrate enhanced the photocatalytic performance of coatings by reducing the generation of gaseous NO(2) as a by-product.

• 出版日期2011-9