title: Spatial arrangement of metal nanoparticles supported by porous polymer substrates studied by transmission electron microtomography.
abstract: Fine metal particles (nanoparticles) stabilized on porous (polymeric) substrates can be considered as a model system of a high-performance catalyst. In the present study, the substrate was made using the periodic microphase-separated structure of a block copolymer as the template, and the Pd nanoparticles were formed inside the porous material by reduction of the Pd2+ ions with 1-propanol as the reductant. The three-dimensional morphology of such a polymer-Pd hybrid material was studied by transmission electron microtomography. The characteristic structural parameters of the hybrid, e.g., the penetration of the Pd nanoparticles into the polymer substrate, number density of the Pd nanoparticles, and size distribution of the Pd nanoparticles, were measured for the first time.
authors.affiliation: Department of Macromolecular Science and Engineering, Graduate School of Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan. hjinnai@kit.ac.jp
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Jinnai
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kaneko
authors.forename: Hideo
authors.initials: H
authors.lastname: Nishioka
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Hasegawa
authors.forename: Toshio
authors.initials: T
authors.lastname: Nishi
mesh_terms: D053768:Metal Nanoparticles; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D014054:Tomography / Q000379:methods*
chemical_list: D011108:Polymers