Title:
Photocatalytic cementitious materials containing highly active nanosized TiO2: Mechanisms of air pollution remediation and the effect of the alkaline environment
Author(s):
Andrea Folli
Publication:
NCR
Volume:
44
Issue:
2
Appears on pages(s):
11-24
Keywords:
TiO2, photocatalytic concrete, visible light, NOx.
DOI:
Date:
12/15/2011
Abstract:
The present work offers a general overview about application of titanium dioxide (or titania), TiO2, photocatalysis to concrete technology in relation to depollution properties achieved by implementing TiO2 into cement. Chemistry of oxidation of nitrogen oxides (NOx), gaseous atmospheric pollutants responsible for acid rains and photochemical smog, is investigated using a commercial available nanosized titania sample, n-TiO2, in mortar specimens (average particle size 18.4 nm ± 5.0 nm). Experimental data on photocatalytic performances are discussed in relation to the physical chemical properties of the photocatalyst and the chemical environment of cement. Impacts on applications in construction concrete are also discussed.
Norwegian Concrete Association, International Partner Access
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