Uniform rutile SnO2 nanoparticles with small size (ca. 3 nm) were highly dispersed on both sides of GO sheets through electrostatic interactions, giving pseudo-homogeneous catalysts of SnO2/GO nanocomposites. The SnO2-decorated GO nanocomposites, especially, SnO2 (15 wt%)/GO was highly efficient and reusable in Baeyer-Villiger oxidation of ketones with H2O2. SnO2/GO nanocomposites, where uniform SnO2 nanoparticles were tightly gripped on both sides of GO sheets by surface oxygenated functional groups through electrostatic interaction, have proved to be a versatile, efficient and reusable catalyst for the BV oxidation of ketones with H2O2. [GRAPHICS]