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Journal ArticleDOI

Obtaining Metallic Bismuth in Condensed Media Composed of Formates

30 Jun 2018-Russian Journal of Applied Chemistry (Pleiades Publishing)-Vol. 91, Iss: 4, pp 566-572
TL;DR: In this paper, a dispersion analysis of bismuth samples was made by the method of small-angle scattering of light for a proximate monitoring of the particle size in powders of different fractions.
Abstract: Microcrystalline metallic bismuth powders of varied morphology were obtained by reduction of bismuth precursors, basic bismuth formate and bismuth(III) formate in benzyl alcohol, hydrazine hydrate, and sodium borohydride. The methods of X-ray diffraction analysis, scanning electron microscopy, thermogravimetry, and differential scanning calorimetry were used to examine the phase composition and the morphology of the resulting metallic bismuth powders. A dispersion analysis of bismuth samples was made by the method of small-angle scattering of light for a proximate monitoring of the particle size in powders of different fractions. The specific surface area of the metallic bismuth sample was determined by the thermal desorption of argon.
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Journal ArticleDOI
21 May 1999-Science
TL;DR: Single-crystal bismuth thin films 1 to 20 micrometers thick were fabricated by electrodeposition and suitable annealing, and clean Shubnikov-de Haas oscillations were observed, indicative of the high quality of these films.
Abstract: Single-crystal bismuth thin films 1 to 20 micrometers thick were fabricated by electrodeposition and suitable annealing. Magnetoresistance up to 250 percent at 300 kelvin and 380,000 percent at 5 kelvin as well as clean Shubnikov-de Haas oscillations were observed, indicative of the high quality of these films. A hybrid structure was also made that showed a large magnetoresistive effect of 30 percent at 200 oersted and a field sensitivity of 0.2 percent magnetoresistance per oersted at room temperature.

473 citations

Journal ArticleDOI
TL;DR: In this article, a review of the potential of bismuth-containing heterometallic oxides is presented together with feasible applications of the latter, and a variety of structurally related high-nuclearity molecular Bismuth oxo clusters are discussed that serve as model compounds.

274 citations

Journal ArticleDOI
TL;DR: Very large magnetoresistance with ratios as much as 1500 at 5 K and 2.9 at 300 K under 5 T, Shubnikov-de Haas oscillations, and finite-size effects have been observed.
Abstract: Trigonal-axis oriented single-crystal Bi thin films have been made by electrodeposition followed by suitable annealing. Very large magnetoresistance with ratios as much as 1500 at 5 K and 2.9 at 300 K under 5 T, Shubnikov--de Haas oscillations, and finite-size effects have been observed.

127 citations

Journal ArticleDOI
Zhi Wang1, Chunli Jiang1, Rong Huang1, Hui Peng1, Xiaodong Tang1 
TL;DR: In this paper, a pure phase bismuth nanospheres have been successfully prepared by thermolysis of Bismuth acetate in oleylamine, and they showed camel-like shapes located at 425 and 575 nm.
Abstract: Pure phase bismuth nanospheres have been successfully prepared by thermolysis of bismuth acetate in oleylamine. The size distribution of the bismuth nanospheres was improved by quickly quenching the reaction as revealed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The ultraviolet–near-infrared (UV-NIR) absorbance spectrum of the bismuth nanospheres showed camel-like shapes located at 425 and 575 nm, which could be ascribed to the effect of the surface plasmon resonance and light scattering. Due to the absorption in the visible range, the prepared bismuth nanospheres showed good photocatalytic properties to the degradation of RhB.

115 citations

Journal ArticleDOI
22 Feb 2010-Small
TL;DR: These Bi nanoparticles are shown to be the best currently available catalysts for the solution-liquid-solid (SLS) growth of high-quality CdSe quantum wires.
Abstract: An easy shortcut synthesis of thermally stable, near-monodisperse Bi nanoparticles from BiCl3 and Na[N(SiMe3)2] is described. The diameters of the Bi nanoparticles are controlled in the range of 4–29 nm by varying the amounts of BiCl3 and Na[N(SiMe3)2] employed. Standard deviations in their diameter distributions are 5–15% of the mean diameters, consistent with near monodispersity. These Bi nanoparticles are shown to be the best currently available catalysts for the solution–liquid–solid (SLS) growth of high-quality CdSe quantum wires.

85 citations