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Generalized Synthesis of EAs [E = Fe, Co, Mn, Cr] Nanostructures and Investigating their Morphology Evolution
Journal of Nanomaterials
  • Prachi Desai
  • Nikitaa Ashokan
  • Manashi Nath, Missouri University of Science and Technology
Abstract

This paper illustrates a novel route for the synthesis of nanostructured transition metal arsenides including those of FeAs, CoAs, MnAs, and CrAs through a generalized protocol. The key feature of the method is the use of one-step hot-injection and the clever use of a combination of precursors which are low-melting and highly reactive such as metal carbonyls and triphenylarsine in a solventless setup. This method also facilitates the formation of one-dimensional nanostructures as we move across the periodic table from CrAs to CoAs. The chemical basis of this reaction is simple redox chemistry between the transition metals, wherein the transition metal is oxidized from elemental state (E0) to E3+ in lieu of reduction of As3+ to As3-. While the thermodynamic analysis reveals that all these conversions are spontaneous, it is the kinetics of the process that influences morphology of the product nanostructures, which varies from extremely small nanoparticles to nanorods. Transition metal pnictides show interesting magnetic properties and these nanostructures can serve as model systems for the exploration of their intricate magnetism as well as their applications and can also function as starting materials for the arsenide based nanosuperconductors.

Department(s)
Chemistry
Keywords and Phrases
  • Arsenic compounds,
  • Carbonylation,
  • Corrosion resistant alloys,
  • Manganese,
  • Metals,
  • Nanorods,
  • Synthesis (chemical),
  • Thermoanalysis,
  • Transition metals,
  • Metal carbonyl,
  • Morphology evolution,
  • Nano-structured,
  • One-dimensional nanostructure,
  • Redox chemistry,
  • Thermo dynamic analysis,
  • Transition metal Pnictides,
  • Triphenylarsine,
  • Nanostructures
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2015 Hindawi Publishing Corporation, All rights reserved.
Publication Date
9-1-2015
Publication Date
01 Sep 2015
Disciplines
Citation Information
Prachi Desai, Nikitaa Ashokan and Manashi Nath. "Generalized Synthesis of EAs [E = Fe, Co, Mn, Cr] Nanostructures and Investigating their Morphology Evolution" Journal of Nanomaterials Vol. 2015 (2015) ISSN: 1687-4110
Available at: http://works.bepress.com/manashi-nath/41/