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Title: Ru nanoframes with an fcc structure and enhanced catalytic properties

Noble-metal nanoframes are of great interest to many applications due to their unique open structures. Among various noble metals, Ru has never been made into nanoframes. In this study, we report for the first time an effective method based on seeded growth and chemical etching for the facile synthesis of Ru nanoframes with high purity. The essence of this approach is to induce the preferential growth of Ru on the corners and edges of Pd truncated octahedra as the seeds by kinetic control. The resultant Pd–Ru core–frame octahedra could be easily converted to Ru octahedral nanoframes of ~2 nm in thickness by selectively removing the Pd cores through chemical etching. Most importantly, in this approach the face-centered cubic (fcc) crystal structure of Pd seeds was faithfully replicated by Ru that usually takes an hcp structure. Furthermore, the fcc Ru nanoframes showed higher catalytic activities toward the reduction of p-nitrophenol by NaBH 4 and the dehydrogenation of ammonia borane compared with hcp Ru nanowires with roughly the same thickness.
 [1] ;  [2] ;  [2] ;  [2] ;  [1] ;  [2] ;  [3] ;  [4] ;  [1]
  1. Michigan Technological Univ., Houghton, MI (United States)
  2. Univ. of Texas at Dallas, Richardson, TX (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Temple Univ., Philadelphia, PA (United States)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 16; Journal Issue: 4; Journal ID: ISSN 1530-6984
American Chemical Society
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
Michigan Technological University; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
Country of Publication:
United States
36 MATERIALS SCIENCE; catalysis; crystal structure; kinetic control; nanoframe; Ruthenium
OSTI Identifier: