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

Journal Article · · Nano Letters
 [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)

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 NaBH4 and the dehydrogenation of ammonia borane compared with hcp Ru nanowires with roughly the same thickness.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Michigan Technological University; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1339579
Journal Information:
Nano Letters, Vol. 16, Issue 4; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 165 works
Citation information provided by
Web of Science

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Seed-assisted synthesis of fcc Ru–Cu bimetallic nanostructures and their catalytic properties for the hydrogen evolution reaction journal January 2019
From Ru nanoparticle-encapsulated metal–organic frameworks to highly catalytically active Cu/Ru nanoparticle-embedded porous carbon journal January 2017
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The Design and Synthesis of Hollow Micro-/Nanostructures: Present and Future Trends journal July 2018
Performance of Preformed Au/Cu Nanoclusters Deposited on MgO Powders in the Catalytic Reduction of 4-Nitrophenol in Solution journal February 2018
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