Iron oxide γ-Fe2O3 nanoparticles were synthesized in aqueous solutions and the
equilibrium pressure–area isotherms of the Langmuir layers of stearic acid/γ-Fe2O3
nanoparticle complexes at the air–water interface were studied. In comparison to a pure
water subphase, the surface pressure versus the specific area isotherm of the stearic acid
was significantly expanded in the presence of the iron oxide nanoparticles in the subphase
indicating the existence of interactions between the stearic acid monolayer and the iron …