Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9676136 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2005 | 4 Pages |
Abstract
Nanoporous metallic platinum with a high specific surface area of 91Â m2/g was synthesized by a templating method using nonporous silica nanoparticles. The templating reaction is constituted of four steps: (1) a coating reaction of a Pt compound on the silica surface; (2) reduction of the Pt compound; (3) dissolution of the silica by alkaline treatment; (4) removal of residual carbon in the nanoporous platinum by heat treatment. Thus, nanoporous metallic platinum, stabilized by a small amount of carbon, can successfully be obtained by a relatively convenient synthetic process. This material can be a promising model material for development of new scientific fields concerned with electromagnetic properties and a functional material applicable to fuel cell or catalytic reactions.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Michihiro Asai, Toshinari Onoe, Hirofumi Kanoh, Katsumi Kaneko,