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Title: Nanosize transition metal antimonides NiSb and FeSb2: Solvothermal synthesis and characterization.


Abstract not provided.

; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: The Journal of Physical Chemistry; Related Information: Proposed for publication in The Journal of Physical Chemistry.
Country of Publication:
United States

Citation Formats

Huang, Jian Yu, Provencio, Paula Polyak, Latha Kumari, and Wenzhi Li. Nanosize transition metal antimonides NiSb and FeSb2: Solvothermal synthesis and characterization.. United States: N. p., 2010. Web.
Huang, Jian Yu, Provencio, Paula Polyak, Latha Kumari, & Wenzhi Li. Nanosize transition metal antimonides NiSb and FeSb2: Solvothermal synthesis and characterization.. United States.
Huang, Jian Yu, Provencio, Paula Polyak, Latha Kumari, and Wenzhi Li. 2010. "Nanosize transition metal antimonides NiSb and FeSb2: Solvothermal synthesis and characterization.". United States. doi:.
title = {Nanosize transition metal antimonides NiSb and FeSb2: Solvothermal synthesis and characterization.},
author = {Huang, Jian Yu and Provencio, Paula Polyak and Latha Kumari and Wenzhi Li},
abstractNote = {Abstract not provided.},
doi = {},
journal = {The Journal of Physical Chemistry},
number = ,
volume = ,
place = {United States},
year = 2010,
month = 6
  • Investigations into ternary rare-earth transition-metal antimonide systems RE{sub x}M{sub y}Sb{sub z} have been going on for at least two decades. These studies have been carried out variously to search for new magnetic materials, to test the validity of bonding models, and perhaps most importantly, to systematize an interesting structural chemistry that is not as well understood as that of the corresponding phosphides or arsenides. Some of these antimonides have counterparts in phosphides or arsenides, such as REMSb{sub 2} (M = Mn-Zn, Pd, Ag, Au) with the HfCuSi{sub 2} structure, REM{sub 2}Sb{sub 2} (M = Mn, Ni, Pd) with the CaBe{submore » 2}-Ge{sub 2} and ThCr{sub 2}Si{sub 2} structures, and REM{sub 4}Sb{sub 12} (M = Fe, Ru, Os) with the filled skutterudite LaFe{sub 4}P{sub 12} structure. Others, such as RE{sub 3}M{sub 3}Sb{sub 4} (M = Pt, Cu, Au) and REMSb{sub 3} (M = Cr, V) are unique to antimonides so far. The authors report here the synthesis of a new series of ternary-antimonides RE{sub 3}MSb{sub 5} containing an early transition metal M = Ti, Zr, Hf, Nb. 28 refs., 2 figs., 3 tabs.« less
  • Uniform nanoparticles of rutile and anatase were prepared, respectively, by a new approach, a microemulsion-mediated method, in which the microemulsion medium was further treated by hydrothermal reaction. Herein, the combined procedure of microemulsion and hydrothermal synthesis to prepare nanoparticles is referred to as a microemulsion-mediated hydrothermal (MMH) method. This MMH method could lead to the formation of crystalline titania powders under much milder reaction conditions than the normally reported microemulsion-mediated methods, in which posttreatment of calcination was necessary. In this work, a kind of solution was formed by dissolving tetrabutyl titanate into hydrochloric acid or nitric acid, and the solutionmore » was dispersed in an organic phase for the preparation of the microemulsion medium. The aqueous cores of water/Triton X-100/hexanol/cyclohexane microemulsions were used as constrained microreactors for a controlled growth of titania particles under hydrothermal conditions. The product of hydrothermal synthesis was separated and dried for characterization. The phase components and the morphologies and grain sizes of products were determined by X-ray diffraction (XRD) and by transmission electron microscopy (TEM). The effects of changing the variables of the reaction conditions, such as the use of acid, the concentrations of acid, the reaction temperatures, and/or the reaction times on the phases and morphologies of the titania product are described.« less
  • A phase transfer technique was employed to prepare nanosize Cu-ZnO/Al{sub 2}O{sub 3} catalyst particles. Due to adsorption of metal surfactants, sol particles are transferred from the aqueous phase to the organic phase. Consequently, the agglomeration of particles can be reduced. Cu-ZnO/Al{sub 2}O{sub 3} catalyst of about 5-mm particle size was prepared by this technique. It was found that organic solvents with aliphatic chains were more effective than aromatic solvents. A solvent-to-salt ratio of about 2,200 ml solvent per mole of salt appeared to be ideal. The preparation procedure comprises preparation of aqueous sol and metal surfactant solution in organic solvent,more » mixing, stirring, and so on. The mol fraction of metal surfactant versus total metal was approximately 0.3. The concentration of salt and precipitant was 0.2--0.4 mol/L.« less
  • Nanosize Cu-ZnO/Al{sub 2}O{sub 3} catalysts for methanol synthesis were prepared by the metal surfactant phase transfer technique. The effects of chain length of surfactant and additives were studied. It was found that the longer the organic chain of surfactant, the more stable the sol particles and the larger the surface area of catalyst. The decomposition temperature of surfactants with longer chains was also higher. For the preparation of Cu-ZnO/Al{sub 2}O{sub 3} catalyst, the surfactant organic chain should not be longer than 11 carbon atoms. A synergist could be used to improve surfactant efficiency. A stabilizing agent was used to strengthmore » the stability of sol particles in water. The time needed for oil-water separation was reduced markedly by using a demulsifying agent. The optimal mole ratios of synergist, stabilizing agent, and demulsifying agent to surfactant were, respectively, 0.6, 0.6, and 1.« less