Facile preparation and unique H-2 adsorption behavior of three-dimensional novel Pt-Ru hollow sphere assemblies
SCIE
SCOPUS
- Title
- Facile preparation and unique H-2 adsorption behavior of three-dimensional novel Pt-Ru hollow sphere assemblies
- Authors
- Wang, H; Li, YW; Cho, SJ; Li, XD; Kim, DP
- Date Issued
- 2009-01-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Three-dimensional long range ordered hollow Pt-Ru sphere assemblies were prepared using a sacrificial three-dimensionally ordered macroporous (3DOM) carbon template. Metallic salts, such as a mixture of RuCl3 with H2PtCl6 were infiltrated into the carbon template, and a reduced Pt-Ru phase was produced on the surface of the 3DOM carbon template by a borohydride reduction reaction. The sacrificial template was then burnt off in air at 650 degrees C. The diameter of the hollow Pt-Ru spheres could be tailored using a different pore size 3DOM carbon template. Assemblies with an outer diameter of 550 nm showed high BET surface area of 584.3 m(2)/g. In addition, a high hydrogen adsorption stoichiometry (>0.5 H/M) was obtained on the Pt-Ru sphere assemblies, which indicated that most of the metal atoms on the surface were exposed. (C) 2008 Elsevier Inc. All rights reserved.
- Keywords
- Sphere pattern; 3DOM carbon template; Metallic hollow sphere; Pt-Ru hollow sphere; CALCIUM-CARBONATE; DIRECTED GROWTH; TEMPLATE; NANOPARTICLES; MICROSPHERES; FABRICATION; PARTICLES; SILICA; ARRAYS; FIELD
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16088
- DOI
- 10.1016/J.MICROMESO.2008.06.037
- ISSN
- 1387-1811
- Article Type
- Article
- Citation
- MICROPOROUS AND MESOPOROUS MATERIALS, vol. 117, no. 1, page. 208 - 212, 2009-01-01
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- There are no files associated with this item.
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