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Title: Controlled Anisotropic Growth of Co-Fe-P from Co-Fe-O Nanoparticles

Presented here is a facile approach to bimetallic phosphides, Co-Fe-P, via high-temperature (300°C) reaction between Co-Fe-O nanoparticles and trioctylphosphine. The growth of Co-Fe-P from the Co-Fe-O is anisotropic. As a result, Co-Fe-P nanorods (from the polyhedral Co-Fe-O nanoparticles) and sea-urchin-like Co-Fe-P (from the cubic Co-Fe-O nanoparticles) are synthesized with both nanorod and the sea-urchin-arm dimensions controlled by Co/Fe ratios. The Co-Fe-P structure, especially the sea-urchin-like (Co0.54Fe0.46)2P, shows enhanced catalysis for oxygen evolution reaction in KOH with its catalytic efficiency surpassing Ir catalyst. Our synthesis is simple and may be readily extended to the preparation of other multimetallic phosphides for important catalysis and energy storage applications.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [4] ;  [3] ;  [1]
  1. Brown Univ., Providence, RI (United States). Department of Chemistry
  2. Brown Univ., Providence, RI (United States). Department of Chemistry; Harbin Inst. of Technology, Harbin (China)
  3. Ames Lab., Ames, IA (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
Publication Date:
OSTI Identifier:
1221913
Report Number(s):
IS-J--8783
Journal ID: ISSN 1433-7851
Grant/Contract Number:
AC02-07CH11358
Type:
Accepted Manuscript
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Name: Angewandte Chemie (International Edition); Journal Volume: 54; Journal Issue: 33; Journal ID: ISSN 1433-7851
Publisher:
Wiley
Research Org:
Ames Laboratory (AMES), Ames, IA (United States); Brown Univ., Providence, RI (United States). Department of Chemistry
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY