V. P. Tolstoi

Ozone interaction with manganese acetate solution. Formation of HxMnO2·nH2O layers and microtubes based on them

We present the first study of Mn(II) cations interaction with ozone fed onto the air/aqueous manganese acetate solution boundary. In the reaction, the layer of HxMnO2·nH2O of birnessite structure has been formed at the surface. Subsequent ∼1–3 μm thick layers drying at air has led to their rolling up to form microtubes with diameter of 20–50 μm and up to 10 mm long.

Synthesis of Highly Oriented α-PbO2 Layers on the Surfaces of Single-Crystal Silicon and Quartz by Successive Ionic Layer Deposition

Conditions for the synthesis of α-PbO2 layers on silica surfaces by successive ionic layer deposition were determined. These layers were studied by X-ray spectral microanalysis, X-ray diffraction, IR Fourier spectroscopy, UV-Vis spectroscopy, and ellipsometry.

Silver nanoribbons synthesized on a silicon surface by the “layer-by-layer” technique

Conditions for the synthesis of silver nanoribbons on a silicon surface by the “layer-by-layer” technique were determined for the first time. The synthesized structures were studied by scanning electron microscopy, energy-dispersion microanalysis, and X-ray diffraction. A conclusion on the sequence of possible reactions occurring on the surface during the synthesis was drawn on the basis of the experimental data.

Agx-SnO2 nanocomposite layers synthesized by ionic layer deposition onto silica surface

Possibility of performing synthesis of Agx-SnO2 nanocomposite layers on the silica surface by ionic layer deposition was analyzed, and the factors affecting the layer morphology and composition were determined. The synthesized layers were examined by visible transmission spectroscopy, as well as by scanning electron microscopy, IR Fourier-transform spectroscopy, and X-ray spectral microanalysis.

Synthesis and study of cerium(IV) polytungstate nanolayers

For the first time the conditions for the synthesis of cerium(IV) polytungstate nanolayers on the silicon surface by the method of ion layering were defined. The layers were studied by scanning electron microscopy, X-ray microanalysis and transmission FT-IR spectroscopy. The synthetized layer is shown to have a globular structure with the size of the globules in the range of 30–50 nm, with the ratio of cerium/tungsten atomic concentrations equal to 0.8.

Layers of nanocomposite FeOOH-xH3PW12O40 synthesized by ion-colloid layering

For the fi rst time the conditions of synthesis by ion-colloid layering of layers of nanocomposite FeOOH—xH3PW12O40 on the surface of silica were defined using successively adagulation of FeOOH colloidal particles, and adsorption of H3PW12O40. Investigation of the synthesized layers was carried out by scanning electron microscopy, X-ray microanalysis, UV and Fourier transmitting infrared spectroscopy.

New routes for the synthesis of nanocomposite layers of inorganic compounds by the layer-by-layer scheme

This short review is devoted to the presentation of new routes for the synthesis of nanocomposite layers at the solid-solution interface by the layer-by-layer scheme. A diversity of methodic approaches to the synthesis is divided into separate groups according to the nature of starting reagents. The methods of ion deposition, molecular, colloidal, ion-molecular, molecular-colloidal, and ion-colloidal deposition are set off from them. New routes of synthesis, which are based, in particular, on using soluble fluoride and oxalate metal complexes, polyoxometallates, and also colloidal solutions of layered double hydroxides, are discussed for the methods of ion, ion-colloidal, and colloidal deposition.

Synthesis of the nanocomposite SnO2-Aux0 -(H3PW12O40)y·nH2O layers on the silica surface by the layer-by-layer method

Conditions for the synthesis of the SnO2-Aux0-(H3PW12O40)y·nH2O nanocomposite layers by the method of ionic epitaxy were determined for the first time. The layers we investigated by the method of scanning electron microscopy, energy dispersion microanalysis, UV and IR Fourier transmission spectroscopy. On the basis of the experimental data conclusions were drawn on the composition and structure of the synthesized layers.

Sb2S3-SiO2 nanocomposite layers synthesized using the layer-by-layer technique

Possibility of layer-by-layer synthesis by colloidal layering of Sb2S3-SiO2 nanocomposite layers from colloid solutions of {[HxSb2S5]m−}mNa+ and SiO2 was studied. The composition of the layers synthesized was examined by Raman spectroscopy, transmission spectroscopy in the UV and visible spectral ranges, energy-dispersion micro analysis, and scanning electron microscopy.

Layer-by-layer synthesis and study of nanostructured Pb4SbS6.5 layers

Conditions for the layer-by-layer synthesis of nanostructured Pb4SbS6.5 layers on a silica surface, using reagent solutions, were determined. The synthesized layers were studied by X-ray photoelectron spectroscopy, UV and visible transmission spectroscopy, X-ray spectral microanalysis, and scanning electron microscopy.