Heterogeneous Photocatalysis for Purification, Decontamination and Deodorization of Air

Abstract

: A research review of gasÈsolid heterogeneous photocatalysis is presented, ranging from details of pioneering works, which dealt with basic phenomena like oxygen and water vapor adsorption, to recent applications to pollutant removal in contaminated atmospheres. Special interest is taken in describing the di †erent reactor conÐgurations studied so far in this emerging and promising Ðeld.

Photo-catalytic oxidation of cyclohexane over TiO2: a novel interpretation of temperature dependent performance

“…, with the reference temperature T ref set at 296 K. The consumption rate of the reactant and the formation rates of the products follow directly from the reaction rates considering the total number of active sites (N T ) and a reactor volume (V R ) of 1.1 Â 10 À6 m 3 . In order to fit the IR experimental results, two calibration factors had to be incorporated in the model, to relate the cyclohexanone and H 2 O concentrations to their IR peak areas (abs cm À1 ).…”

Heat Treatment in Molecular Precursor Method for Fabricating Metal Oxide Thin Films

“…When titania particles absorb UV radiation, they produce pairs of electrons and holes inside the particles. Because the photoinduced electrons and holes can be incorporated into redox reactions on the titania surface before spontaneous recombination, the surface states of the titania particle are quite important for photoreactivity [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52].…”

Vapor Phase Hydrogen Peroxide – Method for Decontamination of Surfaces and Working Areas from Organic Pollutants

“…In 1972, Fujishima and Honda (Fujishima & Honda, 1972) discovered the photocatalytic properties of nanocrystalline TiO 2 and predicted its possible application in chemical decontamination (Linsebigler et al, 1995;Wold, 1993). The TiO 2 /UV system was described in several studies (Mills & Hunte, 1997;Peral et al, 1997;Rauf & Ashraf, 2009;Tschirch et al, 2008;Zhao et al, 2005), mainly with regard to a higher efficiency of degradation of chemical pollutants in water and air. Total mineralization of pollutants was observed, producing only CO 2 , H 2 O and inorganic ions (Zhao et al, 2005).…”