Abstract. Highly hydroxylated barium titanate (BaTiO3) nanoparticles have been prepared via an easy and gentle approach which oxidizes BaTiO3 nanoparticles using an aqueous solution of hydrogen peroxide (H2O2). The hydroxylated BaTiO3 surface reacts with sodium oleate (SOA) to form oleophilic layers that greatly enhance the dispersion of BaTiO3 nanoparticles in organic solvents such as tetr…