Enhanced photocatalytic degradation of VOCs using Ln??-TiO?catalysts for indoor air purification

Abstract

Two types of lanthanide ion-doped titanium dioxide (Ln??¡VTiO?) catalysts including La??¡VTiO?and Nd??¡VTiO?were prepared by a sol¡Vgel method. The effects of the lanthanide ion doping on the crystal structure, surface area, adsorption properties, pore size distribution, and surface chemical state of the catalysts were investigated by means of XRD, BET,and XPS. As results,the crystal size decreased significantly, while the specific surface area, t-plot total surface area, micropore volume, and the total pore volume increase