Chemical etching route to prepare nanometer-size spherical titania-octadecylamine hybrid particles

Spherical titaniaoctadecylamine hybrids (tens of nm to hundreds of nm) were obtained by the dissolution of presynthesized well-defined spherical particles with different size (70, 120, and 240 nm). The dissolution proceeds homogenously to give well-defined and size-controlled products when the reaction is conducted at room temperature in methanol.