Hollow anatase TiO2 nanoparticles with excellent catalytic activity for dichloromethane combustion

Abstract

Toward the design of efficient nanocatalysts, hollow anatase TiO₂ nanoparticles around 11.4 nm in size were prepared by a cetyltrimethylammonium bromide (CTAB)-assisted hydrothermal method. The catalyst showed high catalytic activity for dichloromethane (DCM) combustion, exhibiting 90% DCM conversion at 201 °C. The satisfactory performance of the catalyst was attributed to its hollow texture with many active sites, and the large number of moderately strong acidic sites on the hollow TiO₂ surface.