Structure of monoalkyl-monocationic surfactants on the microscopic three-dimensional platinum surface in water

Detailed analyses have been performed for the structure of monoalkyl-monoca tionic surfactant stabilizing on the microscopic three-dimensional surface of the platinum nanoparticles in water, prepared by visible light-irradiati on of aqueous solutions of surfactants and platinum salt, and having specif ic catalytic properties. C-13 NMR spectra of these colloidal dispersions in heavy water show that the surfactants stabilize the platinum nanoparticles by the hydrophobic interaction between the platinum surface and surfactant molecules, which deforms the micelle structure. (C) 2000 Elsevier Science B.V. All rights reserved.