3D solid carbon foam-based photocatalytic materials for vapor phase flow-through structured photoreactors

β-SiC alveolar foams as a structured photocatalytic support for the gas phase photocatalytic degradation of methylethylketone

“…This behavior is similar to that observed in liquid and gas phase reactions with powder photocatalysts, due first to the increase in the amount of illuminated TiO 2 particles in the reactor, and further to a screening effect of excess particles, which mask part of the TiO 2 photocatalyst particles [58] -for gas phase applications -as a result from the limited penetration of UV-A light through the TiO 2 coating. A similar behavior was observed for the gas phase methanol degradation on carbon foam supported TiO 2 P25 photocatalyst [25] as well as for the Diuron ® pesticide mineralization in water on ␤-SiC foam supported sol-gel TiO 2 [32].…”

“…The use of ␤-SiC alveolar foams as structured photocatalyst support remains scarce in comparison to that of metallic and ceramic foams -mainly made of nickel or aluminum [13][14][15][16][17], and alumina or cordierite [18][19][20][21][22][23][24], respectively -and in a lesser extent to that of polymeric [11] and carbon foams [25,26]. However, they benefit from a high thermal and chemical stability, that allows the monolith to operate safely in severe basic or acidic reaction conditions.…”

TiO2 photocatalysis for the degradation of pollutants in gas phase: From morphological design to plasmonic enhancement

“…Keller's group made nice advancements in this domain by using foam-like supports for various gas phase applications, including disinfection of airborne bacteria. [139][140][141] An alternative strategy has been explored by Tytgat et al, who fabricated self-supporting TiO 2 foams using a direct foaming technique ( Figure 7b). [142] It was shown that these TiO 2 foams were active towards PCO of ethylene in the gas phase.…”

Carbon-coated structured supports. Preparation and use for nitrobenzene hydrogenation

“…However, by this method, very few articles deal with carbon deposition on non-ceramic structures. Schimpf et al [11] describe the coating of AlMg microchannels (0.3 mm x 0.7 mm x 50 mm), Acharya et al [12] the coating of stainless steel disks by spraycoating to obtain membranes, Hajiesmaili et al [13] the preparation of carbon foams by shape memory synthesis. A hybrid procedure has been used by Garcia-Bordeje et al [14] to obtain activated carbon on monoliths.…”