Study of the NO2 surface saturation of photocatalytic cements

Author(s): F. Pinna, V. Trevisan, L. Cassar, E. Peccati, C. Pepe, N. Pernicone
Paper category : conference
Book title: International RILEM Symposium on Photocatalysis, Environment and Construction Materials - TDP 2007
Editor(s): P. Baglioni and L. Casssar
Print-ISBN: 978-2-35158-056-1
e-ISBN: 978-2-35158-057-8
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 243 - 248
Total Pages: 6
Language: English

Abstract: As photocatalytic cements, besides oxidizing NO, must also trap NO2 as soon as it is formed on the anatase surface, a technique has been developed for the measurement of the maximum volume (Vmax) of NO2 that can be absorbed by the cement, as the NO2 adsorption capacity of anatase is negligible. As pulse flow technique, derived from the catalytic science, has been successfully applied to the cements. Vmax proved to be directly proportional to the cement surface area, which therefore must be as high as possible in photocatalytic cements, in particular for those used inside the buildings. The atmospheric humidity was found to hamper in some way the NO2 adsorption. A possible explanation was suggested for this phenomenon, opening the way for research aiming at overcoming it.

Online publication: 2011-07-01
Publication type : full_text
Public price (Euros): 0.00