Enhancing photocatalytic activity by using TiO <inf>2</inf>-MgO core-shell-structured nanoparticles

Abstract

Hygroscopic Mg(OH) 2 gel was topotactically decomposed on TiO 2 particle surfaces, resulting in highly nanoporous MgO-coated TiO 2 particles. The highly hygroscopic and nanoporous MgO shell absorbed more water molecules and hydroxyl groups from the environment to yield an improved photocatalytic property of the core-shell particles as compared to the uncoated TiO 2 counterpart. © 2006 American Institute of Physics