Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Alexander E. Baranchikov"'
Autor:
A. A. Egorova, Alexey D. Yapryntsev, S. Yu. Kottsov, T. M. Bushkova, I. V. Kolesnik, Alexander E. Baranchikov
Publikováno v:
Russian Journal of Inorganic Chemistry. 66:146-152
The hydrothermal treatment of neutral and acidified KMnO4 solutions at concentration of 0.037–0.093 mol/L and temperature of 120, 170, and 220°С for 24 h leads to selective synthesis of three different manganese dioxide modifications: α-MnO2, δ
Autor:
Bing-yuan Han, Mikhail I. Razumov, K. S. Gavrichev, Olga S. Ivanova, Andrey V. Khoroshilov, Vladimir Ivanov, Alexander E. Baranchikov, Alexander V. Tyurin
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 142:1533-1543
Thermodynamic properties (heat capacity Cp, entropy S°, enthalpy change ΔH° and reduced Gibbs energy ΔΦ°) of crystalline WO3 in a temperature range of 80–1256 K were refined using two complementary calorimetric methods, namely differential sc
Publikováno v:
Physical Chemistry Chemical Physics. 22:9630-9636
Thin films of photonic crystals with inverse opal structure were prepared from opal-type templates by photocurable resin polymerization, and methylene blue dye was embedded into them as an analyte. Raman spectra were recorded at different angles of l
Publikováno v:
Physical chemistry chemical physics : PCCP. 23(36)
We present a substrate design for surface-enhanced Raman scattering by decorating three-dimensional inverse photonic crystals with a small amount of Au nanoparticles. Photonic crystals with different positions of the photonic stop band were fabricate
Autor:
Alexander E. Baranchikov, S. V. Savilov, Anna A. Semenova, Eugene A. Goodilin, Vladimir Ivanov
Publikováno v:
Mendeleev Communications. 29:269-272
Nanostructured silver coatings for surface-enhanced Raman spectroscopy possessing a hierarchic ring morphology were prepared via the superficial decomposition of ultrasonic mist of aqueous diamminesilver(I) hydroxide free of reducing agents and non-v
Hydrothermal Microwave Synthesis of MnO2 in the Presence of Melamine: The Role of Temperature and pH
Autor:
Alexey D. Yapryntsev, M. A. Teplonogova, Vladimir Ivanov, Olga S. Ivanova, Alexander E. Baranchikov
Publikováno v:
Russian Journal of Inorganic Chemistry. 63:708-713
Nanocrystalline manganese dioxide have been prepared by hydrothermal microwave treatment of mixed solutions of potassium permanganate and 2,4,6-triamino-1,3,5-triazine (melamine) in pH range 0.5–3. Phase and chemical composition and morphology of t
Autor:
Alexey V. Garshev, Alexander E. Baranchikov, Alexey D. Yapryntsev, O. V. Boytsova, Vladimir Ivanov
Publikováno v:
Russian Journal of Inorganic Chemistry. 63:567-573
The effect of polyoxyethylene ethers as surfactants on the morphology of NH4TiOF3 crystals obtained by hydrolysis of (NH4)2TiF6 in the presence of boric acid is analyzed. Depending on the molecular weight of the polyoxyethylene ether, the geometric d
Autor:
Alexander E. Baranchikov, S. V. Savilov, Anna A. Semenova, Vladimir Ivanov, Eugene A. Goodilin
Publikováno v:
Mendeleev Communications. 29:395-397
Pseudomorphs (mesocages) of metallic silver were prepared via either a shape-preserving reduction of polyhedral Ag2O precursors with H2O2 in aqueous ammonia or an ultrasonic spray pyrolysis of aqueous diamminesilver(i) hydroxide. Both the materials w
Publikováno v:
Russian Journal of Inorganic Chemistry. 60:1299-1303
Effect of reaction medium acidity on the phase composition and morphology of manganese dioxide obtained by microwave hydrothermal treatment was studied. Conditions for the preparation of single-phase nanocrystalline polymorphs of manganese dioxide, b
Autor:
Vladimir Ivanov, Alexey D. Yapryntsev, Anastasia E. Goldt, Alexander E. Baranchikov, L. S. Skogareva
Publikováno v:
Russian Journal of Inorganic Chemistry. 60:1027-1033
A stable yttrium peroxo compound containing 6.7% active (peroxide) oxygen is prepared by reacting layered yttrium hydroxonitrate Y4(OH)10(NO3)2 · xH2O with 12% or 87% aq. H2O2 at 0°C. The active oxygen in this compound is in the form of HO 2 - - an