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Ternary Cobalt-Iron Phosphide Nanocrystals with Controlled Compositions, Properties, and Morphologies from Nanorods and Nanorice to Split Nanostructures.
MedLine Citation:
PMID:  21491516     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Structural phase-controlled formation of binary Co(2) P and CoP nanocrystals is achieved by reacting cobalt(II) oleate with trioctylphosphine. In the absence of oleylamine, Co(2) P nanowires are formed at both 290 and 320 °C. In the presence of oleylamine, Co(2) P nanorods are formed at 290 °C, and CoP nanorods are formed at 320 °C. With the simultaneous reaction of iron(III) oleate and cobalt(II) oleate with trioctylphosphine in the presence of oleylamine, ternary Co(2) P-type cobalt-iron phosphide nanostructures are produced at both 290 and 320 °C, corresponding to rice-shaped Co(1.5) Fe(0.5) P nanorods and split Co(1.7) Fe(0.3) P nanostructures, respectively. The controlled incorporation of iron into cobalt phosphide can alter the magnetic properties from paramagnetic binary Co(2) P to ferromagnetic Co(2) P-type ternary cobalt-iron phosphide nanostructures. Meanwhile, the time-dependent morphological evolution from small nanodots/nanorods, through seeded growth to unique split nanostructures is demonstrated in one-pot reaction at 320 °C.
Authors:
Enyi Ye; Shuang-Yuan Zhang; Suo Hon Lim; Michel Bosman; Zhihua Zhang; Khin Yin Win; Ming-Yong Han
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-13
Journal Detail:
Title:  Chemistry (Weinheim an der Bergstrasse, Germany)     Volume:  -     ISSN:  1521-3765     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9513783     Medline TA:  Chemistry     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Affiliation:
Institute of Materials Research and Engineering, 3 Research Link, A*STAR, (Agency for Science, Technology and Research), Singapore 117602 (Singapore), Fax: (+65) 68720785.
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