Magnetite-coated metal foams as one-body catalysts for Fenton-like reactions

Ti-Modified LaFeO3/β-SiC Alveolar Foams as Immobilized Dual Catalysts with Combined Photo-Fenton and Photocatalytic Activity

“…While β-SiC foams have received strong interest for immobilizing titania photocatalysts [17][18][19][20][21][22][23] , to date only scarce works have reported on their use -and more globally on the use of alveolar foams -as support for Fenton-like catalysts. For example, magnetite powder onto Ni and FeCrAl 24 , BiFeO3/Ni 25 , sludge carbon/SiC 26 , ferrisilicate/SiC 27 or Fe-ZSM-5/SiC 28 have been reported as dark-Fenton foam catalysts for CWPO. However, these foam-based catalysts usually suffer from a low stability of the Fe-containing supported active phase, and from uncomplete mineralization of the effluent.…”

“…Self-bonded (binder-free) β-SiC foams prepared via the shape memory synthesis (SMS) replica method stand out in comparison to polymer, metallic, and other ceramic foams such as cordierite, alumina, or zirconia, , thanks to good characteristics such as high thermal/chemical stability, which allows them to withstand severe conditions, and high density of oxygenated surface groups, thereby favoring the anchorage of catalysts. , Although β-SiC foams have received strong interest for immobilizing titania photocatalysts, − to date only scarce works have reported on their useand more globally on the use of alveolar foamsas a support for Fenton-like catalysts. For example, magnetite powder onto Ni and FeCrAl, BiFeO 3 /Ni, sludge carbon/SiC, ferrisilicate/SiC, or Fe-ZSM-5/SiC have been reported as dark-Fenton foam catalysts for CWPO. However, these foam-based catalysts usually suffer from a low stability of the Fe-containing supported active phase and from incomplete mineralization of the effluent.…”