Effect of surface hydrophobicity of TiO2-pillared clay on adsorption and photocatalysis of gaseous molecules in air Original Research Article

Three kinds of TiO2-pillared clay were prepared from different raw clays (montmorillonite, saponite and fluorine mica). Their surface hydrophobicities and performances in adsorption-photocatalytic degradation of toluene, trichloroethylene, ethylene and ethanol in a humid atmosphere, were investigated. The surface hydrophobicity of the pillared clay, estimated by adsorption isotherms of nitrogen and water, varied with the kind of the host clay. It increased in the order of saponite