Nanopowder production based on technology of solid raw substances evaporation by electron beam accelerator

Бардаханов, С. П.; Korchagin, A. I.; Kuksanov, N. K.; Lavrukhin, A. V.; Salimov, R.A.; Фадеев, С. Н.; Cherepkov, V.V.

doi:10.1016/j.mseb.2006.02.038

Cited by 60 publications

(25 citation statements)

References 4 publications

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“…Figure 2 shows that the particles of sample (7) have a structure that is similar to that of sample (1), that is, a spherical shape with an APS of 40 nm and a PSD similar to that of samples (1)- (3). The particles of sample (8) are irregular in shape, with a particle size of about 30-35 nm but a sufficiently narrow size distribution. The particles of sample (9) are composed of comparatively large aggregates of acicular nanoparticles with a needle thickness of about 10 nm and a length of about 30-50 nm.…”

Section: Structural Properties and Morphology Of Nanopowdersmentioning

confidence: 94%

“…(A) An industrial electron-beam accelerator is used to "physically" evaporate raw solid alumina and titanium dioxide [8]. The electron beam has a relativistic energy of 1.4 MeV with a power of up to 70 kW.…”

Section: Methodsmentioning

confidence: 99%

“…Samples (5), (8), and (9) show the centers of two types (spectra obtained after evacuation at 400 ∘ C). An increase in the concentration of the stronger centers is obviously accompanied by a drop in the proportion of the weaker centers.…”

Section: Lewis Acid Sitesmentioning

confidence: 99%

See 2 more Smart Citations

Features of Surface Structures of Alumina and Titanium Dioxide Nanoparticles Produced Using Different Synthesis Methods

Сызранцев

Paukshtis

Ларина

et al. 2018

Journal of Nanomaterials

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A comparative study of the scope and surface properties of alumina (Al 2 O 3 ) and titanium dioxide (TiO 2 ) nanoparticles, synthesized using different methods, was carried out using Fourier-transform infrared spectroscopy (FTIR), ultraviolet UV-Vis diffuse reflection spectroscopy (UV-Vis DRS), and Raman spectroscopy, as well as X-ray diffraction methods. It is shown that the differences in the synthesis methods can change the surface properties of the nanoparticles, while maintaining the phase composition of the material. The nanoparticles of each material are shown to exhibit unexpected properties. In particular, the special luminescence characteristics of TiO 2 , a photon-energy shift from the rutile region into that region typical for the anatase, and a significant difference in the Lewis center concentration values for the alumina -phase were observed. This variation in the properties indicates the necessity to involve a wider range of analysis techniques and the importance of precisely characterizing the surface properties. To identify those nanoparticle functional properties that determine their interactions with other materials, a comprehensive study of their phase compositions and surface properties must be completed.

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Section: Structural Properties and Morphology Of Nanopowdersmentioning

confidence: 94%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Features of Surface Structures of Alumina and Titanium Dioxide Nanoparticles Produced Using Different Synthesis Methods

Сызранцев

Paukshtis

Ларина

et al. 2018

Journal of Nanomaterials

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“…The vapors are then transported by argon gas from the evaporation chamber to a condensation chamber where the vapors condense into nanoparticles which are caught in a filter. However, the formation of nanoparticles is not the subject of this article and more detailed descriptions of this process can be found in [2,3,5].…”

Section: Treatment Conditions Of the Copper Ingot Used For The Synthementioning

confidence: 99%

“…For more than 20 years, the Khristianovich Institute of Applied and Theoretical Mechanics (KITAM) has been working in collaboration with the Budker Institute of Nuclear Physics (BINP), both institutes part of the Siberian Branch of the Russian Academy of Sciences (SB RAS), in order to obtain nanopowders from various substances by evaporating the materials using an electron beam [1][2][3]. The electron beam is generated by a high-voltage ELV type accelerator [4].…”

Section: Introductionmentioning

confidence: 99%

Channel Structures Formed in Copper Ingots upon Melting and Evaporation by a High-Power Electron Beam

Бардаханов

Nomoev

Schreiber

et al. 2015

Metals

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A new phenomenon is described in this paper: the formation of macroscopic channel structures on the bottom of copper ingots which were used as the target for the synthesis of copper nanoparticles by high-power electron beam evaporation and condensation. In the synthesis experiment, the cylindrical copper ingot is melted and partially evaporated in a graphite crucible. The channel structures were originally observed after a series of nanoparticle synthesis experiments in varying conditions. In the present work, various process conditions are varied in order to recreate the structures and identify their mechanism of formation. Conditions in which the channel structures form and do not form are identified and interesting microstructures are observed near the channel structures. OPEN ACCESSMetals 2015, 5 429

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Synthesis, characterization, and electrophoretic concentration of titanium dioxide nanoparticles in AOT microemulsions

2017

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Stable organosols of TiO nanoparticles were prepared by hydrolysis of titanium tetraisopropoxide (TTIP) in microemulsions of sodium bis(2-ethylhexyl)sulfoxynate (АОТ) in n-decane with increasing the content of aqueous pseudophase from 0.15 to 0.85 vol.%. As the water content increased, the hydrodynamic diameter of nanoparticles grew from 10 to 225 nm, and the ζ-potential, from -6 to 18 mV (the surface of TiO nanoparticles was recharged when the water content was 0.45 vol.%). Nonaqueous electrophoresis in a capacitor-type cell made it possible to concentrate nanoparticles with a diameter of 60 to 225 nm (concentration factor was 10), separate 20 nm and 225 nm particles, and decrease the content of АОТ in organosol by an order of magnitude. Preparation of a concentrate of nanoparticles with a low content (0.015 M) of AOT included the following stages: (i) electrophoresis after synthesis; (ii) sampling of the concentrate and its twenty-fold dilution with pure n-decane; and (iii) repeated electrophoresis. In situ laser and spectrophotometric scanning of the interelectrode space showed the formation of a sharp boundary between the raffinate and the layer of moving nanoparticles during electrophoresis.

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Nanopowder production based on technology of solid raw substances evaporation by electron beam accelerator

Cited by 60 publications

References 4 publications

Features of Surface Structures of Alumina and Titanium Dioxide Nanoparticles Produced Using Different Synthesis Methods

Features of Surface Structures of Alumina and Titanium Dioxide Nanoparticles Produced Using Different Synthesis Methods

Channel Structures Formed in Copper Ingots upon Melting and Evaporation by a High-Power Electron Beam

Synthesis, characterization, and electrophoretic concentration of titanium dioxide nanoparticles in AOT microemulsions

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