Publications on the project |
099 Intercalation Processes Influence the Structure and Electrophysical Properties of Lithium-Conducting Compounds Having Defect Perovskite Structure |
Authors: | O. I. V’yunov, O. N. Gavrilenko, L. L. Kovalenko, S. A. Chernukhin, L. O. Vasilechko, S. D. Kobilyanskaya, and A. G. Belous | |
Summary: | The structural features and electrophysical properties of lithium-conducting compounds with defect perovskite structure based on Li0.5La0.5Nb2O6 and Li0.5La0.5TiO3 were studied using X-ray diffraction and synchrotron analyses, potentiometry, and complex impedance spectroscopy. Intercalated lithium was found to differently influence ion conductance in titanium and niobium containing materials. This difference was found to arise from the structural features of the materials. The systems studied have high chemical diffusion coefficients of lithium | |
Keywords: | lithium-conducting materials, Intercalation of lithium, chemical diffusion coefficients | |
Edition: | Russian Journal of Inorganic Chemistry | | | 2011,
97-102,Russian |
099 Effect of Isovalent Substitution on the Structure and Ionic Conductivity of Li0.5 – yNa yLa0.5Nb2O6 |
Authors: | A. G. Belous, O. N. Gavrilenko, O. I. V’yunov, S. D. Kobilyanskaya, and V. V. Trachevskii | |
Summary: | We have synthesized Li0.5–yNa yLa0.5Nb2O6 defect perovskite solid solutions with 0 < y ≤ 0.5. Their structure has been shown to undergo partial disordering with increasing sodium content. Lithium ion diffusion in the Li0.5–yNayLa0.5Nb2O6 system exhibits no percolation effects. The ionic conductivity as a function of sodium content has a maximum due to two competing factors: the increase in perovskite cell volume and the decrease in lithium ion concentration. | |
Keywords: | Lithium conducting materials, NMR spectroscopy, impedance spectroscopy | |
Edition: | Inorganic Materials | | | 2011,
1-5,Russian |
099 Structural features and the nature of the ionic conductivity in the systems Li0.5–уNayLa0.5TiO3 and Li0.5–yNayLa0.5{Nb,Та}2O6 |
Authors: | S. Kobylianska, O. I. V’yunov , A.. Belous | |
Summary: | Solid solutions with defect perovskite structure have been obtained in the systems Li0.5–уNayLa0.5TiO3, Li0.5–yNayLa0.5Nb2O6 and Li0.5–yNayLa0.5Та2O6 at 0<y<0.5. Their structure has been shown to undergo partial disordering with increasing sodium content of the system Li0.5–yNayLa0.5Nb2O6 whereas in the system Li0.5–yNayLa0.5Та2O6 the structure remains ordered. Conduction in the system Li0.5–уNayLa0.5TiO3 follows a percolation model. The ionic conductivity as a function of sodium content of the system Li0.5–yNayLa0.5Nb2O6 has a maximum. The ionic conductivity of Li0.5–yNayLa0.5Та2O6 samples decreases with increasing sodium content (without passing through a maximum). The existence of lithium ions with different mobility in the systems Li0.5–yNayLa0.5Nb2O6 and Li0.5–yNayLa0.5Та2O6 (0 < y < 0.5) has been shown by 7Li NMR. The difference in the dependence of conductivity for the systems is due to different ratios of mobile and localized lithium. | |
Keywords: | | |
Edition: | Ukrainian chemistry journal | | | 2012,
7-14,Russian |
099 Lithium Ion Conductors with Perovskite Structure |
Authors: | Kobylianska S.D., V’yunov O.I., Belous A.G. and Bohnke O. | |
Summary: | Solid solutions with defect perovskite structure have been obtained in the systems Li0.5-уNayLa0.5TiO3, Li0.5-yNayLa0.5Nb2O6 and Li0.5-yNayLa0.5Та2O6 at 0 ≤ y ≤ 0.5. Their structure has been shown to undergo partial disordering with increasing sodium content in the system Li0.5-yNayLa0.5Nb2O6 as in the system Li0.5-yNayLa0.5Та2O6 structure is ordered. Lithium diffusion in systems Li0.5–yNayLa0.5(Nb,Та)2O6 exhibits no percolation effects. The ionic conductivity as a function of sodium content in the system Li0.5-yNayLa0.5Nb2O6 has a maximum. The ionic conductivity of Li0.5-yNayLa0.5Ta2O6 samples decreases with sodium content increase. | |
Keywords: | | |
Edition: | Solid state phenomena | | | 2013,
279-285,English |
099 Synthesis of Nanosized (Li,La){Ti,Nb,Ta}O3 Particles Using the Sol–Gel Method |
Authors: | S. D. Kobylyanskaya, O. N. Gavrilenko, and A. G. Belous | |
Summary: | Nanoparticles of lithium titanate, niobate, and tantalate with the structure of defect perovskite were synthesized using the Pechini method. The formation of single_phase lithium lanthanum titanate was shown to occur at 700°C. The average particle size was d ~ 15 nm. For niobate and tantalate, the formation of the perovskite phase starts at 900°C; the average particle size in this case was 50–100 nm. | |
Keywords: | | |
Edition: | Russian Journal of Inorganic Chemistry | | | 2013,
1-8,Russian |
099 Investigation of electrical properties of systems of Li0.5–уNayLa0.5TiO3 and Li0.5–yNayLa0.5{Nb,Та}2O6 |
Authors: | S. D. Kobylianska, O. I. V’yunov, A. G. Belous | |
Summary: | In systems Li0.5–yNayLa0.5Nb2O6 and Li0.5–yNayLa0.5Tа2O6 no percolation transition is observed. The structural features and electrophysical properties of lithium-conducting compounds having defect perovskite structure based on Li0.5La0.5TiO3 and Li0.5La0.5Nb2O6 were studied. Intercalated lithium was found to differently influence ion conductance in titanium- and niobium-containing materials. This difference was found to arise from the structural features of the materials. | |
Keywords: | | |
Edition: | Ukrainian chemistry journal | | | 2013,
10-14,Ukrainian |
099 Effect of Deposition Conditions On Microstructure of LiPON Films Obtained by RF Magnetron Sputtering |
Authors: | L. Kovalenko, O.V’yunov, A.Belous, F. Goutenoire, V. Gunes, O. Bohnke | |
Summary: | Thin conductive amorphous lithium phosphorous
oxynitride (LiPON) films were prepared by rf magnetron
sputtering in various experimental conditions. rf power,
temperature of substrate, pressure of working gas and deposition
time were varied. The microstructure of the films has been
investigated by scanning electron microscopy and phosphorous
mappings. The optimal conditions of reactive sputtering have
been determined, which allows the formation of dense,
homogeneous, free of cracks, amorphous thin LiPON films, and
stable under ambient atmosphere. An ionic conductivity of
3.2•10-6 S•cm-1 at room temperature has been determined by
impedance spectroscopy. | |
Keywords: | LiPON films; RF magnetron sputtering; SEM; impedance spectroscopy | |
Edition: | Electronics and Nanotechnology (ELNANO) | | | 2014,
126-130,English |
099 Preparation of nanoscale LiPON films by rf magnetron sputtering |
Authors: | O.I.V'yunov, L.L.Kovalenko, A.G.Belous, O. Bohnke, C. Bohnke | |
Summary: | The construction of laboratory installation for fabrication of nanoscale amorphous films of lithium phosphorus oxynitride (LiPON) by highfrequency magnetron sputtering is described. Each unit of the installation is modified in such a way that the basic parameters of deposition (HF power, substrate temperature, deposition time, pressure of working gas) could be
adjusted over a wide range. The relationship between the deposition parameters and the microstructure of the LiPON films is determined. As found, the deposited LiPON films are characterized by a high ionic conductivity at room temperature and conductivity activation energy of 0.27 eV. The fabricated LIPON/LLTO/LIPON composite solid electrolyte has a high chemical stability in contact with a lithium anode, high ionic conductivity, and can be used in electrochemical devices. | |
Keywords: | | |
Edition: | Nanosystems, Nanomaterials, Nanotechnologies | | | 2014,
303-311,Russian |
099 Synthesis of Thin Film Electrodes Based on LiPON and LiPON–LLTO–LiPON |
Authors: | A. G. Belous, O. I. V’yunov, L. L. Kovalenko, O. Bohnke, and C. Bohnke | |
Summary: | Thin lithium_conducting amorphous films of lithium phosphorus oxynitride (LiPON) are synthesized by high_frequency (HF) magnetron sputtering. The effect of sputtering conditions (HF power, support temperature, working gas pressure, and deposition time) on the microstructure of LiPON films is studied. The optimal conditions of HF magnetron sputtering that allow dense, uniform, crack_free, air_stable, amorphous thin LIPON films to be formed are studied. The composite solid electrolyte LiPON–LLTO–LiPON is synthesized based on LiPON films and the La2/3 – xLi3xTiO3 (LLTO) ceramics characterized by the high conductivity with respect to lithium ions but unstable in contact with metal lithium. Its microstructure and electrophysical properties are studied. It is found that the LiPON film prevents the chemical reaction of metal lithium with the LLTO solid electrolyte. Due to the high chemical stability and the enhanced conductivity, the composite solid electrolyte based on LiPON–LLTO–LiPON can be used in electrochemical devices. | |
Keywords: | LiPON film, high frequency magnetron sputtering, composite solid electrolyte LiPON–LLTO–LiPON, lithium batteries | |
Edition: | Russian Journal of Electrochemistry | | | 2014,
584-591,Russian |
099 099 Photoelectrochemical system for hydrogen obtained and storage under the influence of sunlight |
Authors: | I.A. Rusetskii, I.A. Slobodyanyuk, G.Ya. Kolbasov, L.G. Shcherbakova, Yu.M. Solonin | |
Summary: | The photoelectrochemical processes on polycrystalline CdSe and CdSe0.65Te0.35 - photoelectrodes are studied. The reasons of increase in efficiency of phototransformation after modifying the surface of photoelectrodes Pt and Zn are analysed. Studying the processes responsible for efficiency metal hydrides in photoelectrochemical system for obtained and storage of hydrogen. The efficiency of the electrodes obtained in the photoelectrochemical cell under conditions of natural insolation are investigated. | |
Keywords: | | |
Edition: | Issues of Chemistry and Chemical Technology | | | 2011,
155-157,Russian |
099 Kinetics of electrochromic process in thin films of cathodically deposited nickel hydroxide |
Authors: | Fomanyuk S.S., Krasnov Yu.S., Kolbasov G.Ya. | |
Summary: | Ni(OH)2 films have been obtained by cathodic deposition from 1 M Ni(NO3)2 on a glass with a current-conducting SnO2 layer. The films have a porous structure and consist of chaotically joined formations of 100–150 nm in size. They contain a considerable amount of adsorbed water, because of which their refraction index was n = ~1.5, whereas for crystalline nickel hydroxide, it was n = 2.37. It has been shown that in the course of discoloration of films through a shift of their potential towards more negative values, an electric field is formed in the bulk of film, which accelerates the entry of cations into it (protons as [H3O]+) from the electrolyte and electrons from ohmic contact. In this case, the initial dependence i(t), where i ~ t −1/4, is bound up with gradual increase in proton surface concentration. It is proposed to determine separately the dependence of the effective codiffusion coefficient of charge carriers (protons and electrons) on decoloration potential by the analysis of plots of current, injected charge, and luminous transmittance of films against time. This procedure involves a series of periodic stops of potential during the recording of current–potential curves for an electrochromic electrode and allows one to monitor the ratio of the film forms NiOOH and Ni(OH)2 in the course of film reduction. | |
Keywords: | Nickel hydroxide,
Effective codiffusion coefficient (protons and electrons),
Cathodic electrodeposition
| |
Edition: | Journal of Solid State Electrochemistry | | | 2013,
2643-2649,English |
099 Nanostructured photoelectrodes TiO2 / CdSe for photoelectrochemical hydrogen production systems |
Authors: | I.A. Slobodyanyuk, I.A. Rusetskii, G.Ya. Kolbasov | |
Summary: | Semiconductor NT-TiO2/CdSe heterostructures are obtained by deposition of CdSe semiconductor films on Ti substrate formed with a layer of TiO2 nano-tubes by potentiostatic anodic polarization. Photoelectrochemical processes on polycrystalline NT-TiO2/CdSe photoelectrode are studied. The reasons for increasing the efficiency of photoconversion after surface modification of photoelectrode with Pt and Zn nanoparticles are analysed. As shown, the nanostructuring of the electrodes leads to an increasing in their photosensi-tivity that is associated with a decreasing in surface recombination rate. Efficiency of the photoanodes in a photoelectrochemical cell with the accumula-tion for hydrogen is studied. | |
Keywords: | | |
Edition: | Metal Physics and Advanced Technology | | | 2011,
279-286,Russian |
099 Reduced graphene oxide: a promising electrode material for oxygen electrodes |
Authors: | Danilov M.O., Slobodyanyuk I.A., Rusetskii I.A., Kolbasov G.Ya. | |
Summary: | A method for the chemical synthesis of reduced graphene oxide has been developed. It is based on the chemical oxidation of multiwalled carbon nanotubes by means of heptavalent manganese with subsequent reduction. Sodium hypophosphite and sulfite were used as reductants. It has been confirmed by different methods that reduced graphene oxide is obtained. Current-potential curves for electrodes based on reduced graphene oxide in an oxygen fuel cell mock-up with alkaline electrolyte have been studied. It has been found that the characteristics of the electrode of graphene oxide reduced with sodium hypophosphite in oxygen reduction reaction are three to four times higher than those of the electrode of starting multiwalled carbon nanotubes. The electrodes based on reduced graphene oxide are superior to multiwalled carbon nanotube-MnO2 composite in characteristics. The characteristics of oxygen electrodes based on reduced graphene oxide were stable during 6-month tests. The reduced graphene oxide obtained promises much as a material for the oxygen electrodes of electrochemical power sources. | |
Keywords: |
Reduced graphene oxide; Electrocatalysis; Oxygen electrode; Electrochemical power sources | |
Edition: | Journal of Nanostructure in Chemistry | | | 2013,
1-5,English |
099 Electrochemical deposition of electrochromic niobium oxide films from an acidic solution of niobium peroxo complexes |
Authors: | S. S. Fomanyuk,
Yu. S. Krasnov,
G. Ya. Kolbasov,
V. N. Zaichenko | |
Summary: | Deposition of electrochromic niobium(V) oxide films from an acidic solution of niobium peroxo complexes on a transparent conducting cathode in the form of an SnO2 film on glass was studied. With an increase in the negative potential of the deposition of niobium(V) oxide films from a solution of niobium peroxo complexes at pH 2.5, the structure and composition of the films changed. A study of the electrochromic properties of Nb2O5 films revealed broadening of the bands in the electrochromic coloration spectrum with an increase in the negative potential of the deposition. | |
Keywords: | | |
Edition: | Russian Journal of Applied Chemistry | | | 2013,
695-699,Russian |
099 Synthesis of Reduced Graphene Oxide and Its Electrocatalytic Properties |
Authors: | Danilov M.O., Slobodyanyuk I.A., Rusetsky I.A., Kolbasov G.Ya. | |
Summary: | The method of the chemical synthesis of reduced graphene oxide was developed. Sodium hypophosphite and sulfite were used as reducing agents. The formation of reduced graphene oxide was confirmed by several methods. Volt-ampere characteristics of electrodes based on reduced graphene oxide were investigated in an experimental model of an oxygen fuel cell with an alkaline electrolyte. Characteristics of oxygen electrodes based on reduced graphene oxide were stable over semiannual tests. The resulting reduced graphene oxide is a promising material for oxygen electrodes of chemical current sources. | |
Keywords: | | |
Edition: | Journal of Applied Chemistry (Russ.) | | | 2013,
917−921,Russian |
099 Photoelectrochemical System Based on АIIBVI Compounds and Reduced Graphene Oxide for Hydrogen Production |
Authors: | Slobodyanyuk I.A., Rusetskii I.A., Danilov M.O., Kolbasov G.Ya. | |
Summary: | The CdSe and CdSexTe1-x films have been obtained by spraying an acetone or aqueous suspension of fine CdSe, ZnCl2, CdTe and CdCl2 powders onto a conducting Ti substrate.
Current-potential curves for cathodic materials and photoanodes under the action of solar radiation have been measured. It has been shown that the characteristics of cathodic materials in the hydrogen evolution reaction exceed the values on smooth platinum and are close to the values on platinum black. | |
Keywords: | photoelectrochemical system, CdSe, CdSe0.65Te0.35, reduced graphene oxide, hydrogen. | |
Edition: | Scientific notes of V.I. Vernadsky Taurida National University. Series: Biology, Chemistry. | | | 2013,
377-384,Russian |
099 Physical and Chemical Properties and Photocatalytic Activity of Nanostructured TiO2/CdS Films |
Authors: | M. A. Zhukovskiy, N. P. Smirnova, I. A. Rusetsky, G. Ya. Kolbasov, and A. M. Eremenkoa | |
Summary: | Mesoporous titanium dioxide fi lms obtained by the sol/gel template method are used as supports for making TiO2/CdS nanoheterostructures. We show that the photocatalytic method results in formation of smaller CdS nanoparticles than chemical deposition. Photoelectrochemical measurements show more effi cient spatial separation of photogenerated charges between components of the photocatalytically produced TiO2/CdS fi lms, and consequently their participation in redox transformation of the xanthene dye Rose Bengal when exposed to UV light leads to higher quantum yields. | |
Keywords: | mesoporous film, photochemical deposition, TiO2/CdS nanostructure, photocatalysis, Rose Bengal. | |
Edition: | Journal of Applied Spectroscopy | | | 2014,
244-250,English |
099 Thin Film Nonstoichiometric Chromium Oxide-Based Cathode Material for Rechargeable and Primary Lithium Batteries |
Authors: | Boldyrev E., Ivanova N., Sokolsky G., Ivanov S., Stadnik O. | |
Summary: | The application of nonstoichiometric chromium oxide-based thin film cathodes in lithium rechargeable and primary batteries operating at high rates has been demonstrated. Films of varying composition have been obtained by anionic Cr (VI) species electrodeposition on a 1X18N10Т grade stainless steel cathode from fluoride-containing electrolytes. The effect of film doping by Li+ ions during its electrosynthesis has been сonsidered. Thin film cathodes electrodeposited in the presence of lithium ions become rechargeable when the lithium content of the film reaches 0.02 wt.%. Mock-ups of CR2325 coin battery with a thin film cathode doped with lithium ions can be discharged more than 40 times with 136 mAh/g specific capacity, 461 Wh/kg specific energy and 154 W/kg power density at 30 kΩ external resistance. The simplicity of thin film preparation makes this technology promising for thin film lithium batteries. | |
Keywords: | Rechargeable batteries,
Thin film cathode material,
Nonstoichiometric chromium oxide-hydroxide compounds | |
Edition: | Journal of Solid State Electrochemistry | | | 2013,
1-9,English |
099 Patent. Oxygen Electrode for Power Sources Based on Reduced Graphene Oxide |
Authors: | Данилов М.О., Слободянюк І.О., Русецький І.А., Колбасов Г.Я | |
Summary: | The oxygen electrode for power sources based on reduced graphene oxide consisting of active and hydrophobic layers. As an active layer reduced graphene oxide is used which was reduced using sodium hypophosphite of oxidized multiwalled carbon nanotubes. | |
Keywords: | | |
Edition: | Patent of Ukraine №78047, publ. 11/03/2013 | | | 2013,
1-4,Ukrainian |
099 Monodispersity and ordering of semiconductor quantum dots synthesised in ionic liquidcrystalline phase of cadmium alkanoates |
Authors: | G. Klimusheva, I. Dmitruk, T. Mirnaya, A. Tolochko, S. Bugaychuk, A. Naumenko, D. Melnik and V. Asaula
| |
Summary: | Structural and optical properties of cadmium alkanoates nanocomposites with cadmium sulfide (CdS) quantum dots (QDs) have been studied by using various techniques: small angle X-ray scattering, transmission electron
microscopy, optical absorption spectroscopy and photoluminescence. QDs are chemically synthesised in thermotropic ionic liquid crystalline (ILC) phase of cadmium alkanoates that have smectic-type ordering and are
used as nanoreactors. Anisotropic glassy nanocomposites are obtained by rapid cooling the thermotropic ILC
nanocomposites to the room temperature. For synthesis of CdS QDs are used cadmium capronate matrix or cadmium
octanoate matrix and their binary mixture. Our results show that in the new cadmium alkanoates matrices,
the CdS QDs have a small dispersion of their sizes, their shape is nearly spherical, they are stable over time and
they are ordered in a layered smectic A matrix. QDs in cadmium octanoate and in cadmium capronate matrices
have the dominant characteristic sizes of 2.7 and 2.8 nm, respectively. In the binary mixture, the QDs have two
dominant characteristic sizes of 2.7 and 3.6 nm. The glassy nanocomposites show spectra both of absorption and
of photoluminescence in near-ultraviolet and blue visible spectral range. | |
Keywords: | CdS quantum dots; synthesis of QDs in ionic liquid crystalline phase; anisotropic glasses | |
Edition: | Liquid Crystals | | | 2013,
980-988,English |
099 Strong thermal optical nonlinearity caused by CdSe nanoparticles synthesised in smectic ionic |
Authors: | A. Lyashchova, D. Fedorenko, Yu. Garbovskiy, G. Klimusheva, T.Mirnaya and V. Asaula | |
Summary: | Spectral and nonlinear optical properties of cadmium octanoate composites containing CdSe nanoparticles
(NPs) have been studied by using optical absorption spectroscopy and laser scanning technique (Z-scan). CdSe
NPs are chemically synthesised in thermotropic ionic liquid crystal (ILC) phase of cadmium octanoate which
is used as nanoreactor. Anisotropic glassy nanocomposites are obtained by the rapid cooling of the ILC
phase of nanocomposites to room temperature. The sizes of the CdSe NPs are determined from the absorption
spectra. The thermo-optical nonlinearity of the new nanocomposites is characterised by extremely large
value of the nonlinear refractive index, n2, under relatively low-powered CW laser irradiation. This nonlinearity
is caused by (1) the efficient light-induced heating due to the CdSe NPs strong exciton absorption, and
(2) consequent thermal dissipation, which in turn, produces the photoelastic tensions in the glassy smectic
matrix. | |
Keywords: | thermo-optical nonlinearity; smectic ionic liquid crystals; CdSe nanoparticles; glassy smectic; Z-scan | |
Edition: | Liquid Crystals | | | 2013,
1377-1382,English |
099 Synthesis and optical properties of liquid crystalline nanocomposites of cadmium octanoate with CdS quantum dots |
Authors: | T.A. Mirnaya, V.N. Asaula, S.V. Volkov, A.S. Tolochko, D.A. Melnik, G.V. Klimusheva | |
Summary: | Nanosized CdS semiconductor crystals have been synthesized in liquid crystalline and isotropic melts based on cadmium octanoate. Glassy mesomorphic nanocomposites have been obtained by cooling melts. It has been shown that CdS nanocrystals in vitrified matrices are quantum dots (QDs) which are characterized by a high degree of monodispersity and have a size of 2-4 nm depending on synthesis conditions. The fluorescence properties of CdS QDs in two-dimensionally ordered cadmium octanoate glass have been investigated for the first time and can serve as a model for studying radiative processes in such new matrices. | |
Keywords: | CdS nanoparticles, Quantum dots, Liquid crystals; Chemical template synthesis; Optical properties | |
Edition: | Physics and Chemistry of Solid State | | | 2012,
131-135,English |
099 Synthesis and optical properties of the liquid-crystalline nanocomposites of cadmium caprylate with cadmium sulfide and cadmium selenide heteronanoparticles |
Authors: | T.A. Mirnaya, G.G. Yaremchuk, V.N. Asaula, S.V. Volkov | |
Summary: | Results for obtaining of optical nanocomposite glasses of the cadmium caprylate with core/ shell heteronanoparticles CdS+CdSe, which are synthesized via codeposition sulfur- and thiosubstanced precursors immediately into ionic liquid-crystalline melt of cadmium caprylate, are presenteted in work. Nanoparticle morphology has been investigated by transmission electron microscopy. It was studied effects of chalcogenide nanoparticles composition on optical properties nanocomposites by optical and fluorescence spectroscopies. | |
Keywords: | Optical nanocomposites, cadmium caprylate, chalcogenide nanoparticles, heteronanoparticles, fluorescence | |
Edition: | Ukrainian Chemistry Journal | | | 2014,
3-9,Russian |
099 Patent. Preparation method of liquid-crystalline nanocomposite materials with semiconductor nanoparticles CdSe |
Authors: | Mirnaya T. A., Asaula V N., Yaremchuk G.G., Volkov S.V. | |
Summary: | Preparation method of liquid-crystalline nanocomposite materials with metal selenide
semiconductor nanoparticles conclude in the interaction of metal-containing organic matrix and selenide reagent. Nanocomposites were obtaining into metal alkanoate liquid-crystalline phase containing with CdSe monodispersity semiconductor nanoparticles, in which metal alkanoate mixed with selenourea ((NH2)2CSe) alcohol solution and then are exposured at inert atmosphere. | |
Keywords: | | |
Edition: | Patent of Ukraine № 69609, publ. 10/05/2012 | | | 2012,
1-5,Ukrainian |
099 Section of Book. New Ion-conducting Nanomaterials Based on Transition Metal Oxides for Energy Conversion and Sensory Systems |
Authors: | S.V. Volkov, A.G. Belous, G.Y. Kolbasov, T.A. Mirnaya, O.I. V’yunov, E.I. Boldyrev, I.A. Rusetsky, Y.S. Krasnov, M.O. Danilov, G.G. Yaremchuk, V.M. Asaula, S.D. Kobilyanskaya | |
Summary: | The results of research and development which have been carried out by institutes of NASU within the framework of the State target scientific and technical program "Nanotechnology and nanomaterials" (2010-2014) are briefly described. 115 sections of the monograph are grouped into six thematic chapters: physics of nanostructures, technology of semiconductor nanostructures, diagnosis of nanostructures, nanomaterials, nanobiotechnology and nanochemistry. It has been shown that further government support and creating a favorable investment climate in Ukraine allows the own competitive nanotechnological manufacture to be organized. | |
Keywords: | | |
Edition: | Nanoscale Systems and Nanomaterials: Research in Ukraine / Ed.: A.G. Naumovets (editor in chief); National Academy of Sciences of Ukraine. - Kyiv, Academperiodika, 2014. | | | 2014,
631-637,Russian |
The events in the framework of the project |
099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099 099
|
099 6. Nanochemistry Purpose:The investigation of processes during chemical and electrochemical synthesis of new ion-conducting nanomaterials based on transition metal oxides, the study of their physical and chemical properties and possibilities of their use in sensor systems and energy-transforming systems Expected results:Release of new product: material Stage 1:Preparation by pulse electrolysis of ion-conducting nanocomposites based on amorphous tungsten oxide and CdSe. Development of technological principles of electrochemical method for the preparation of films of nano-structured oxide compounds based on Co, Cr Stage 2:Preparation and investigation of the properties of powders, films and nanocomposites based on Mo, Ni, V, Mn oxides and Cd chalcogenides. Investigation of the properties of the oxide compounds prepared. Investigation of characteristics of Li-conducting membranes in photoelectrochemical cell for hydrogen accumulation Stage 3:Preparation of nanocomposite films based on Nb, W oxides and CdS, CdSe and Se nanoparticles. Determination of kinetic parameters and reversibility of processes during reduction/oxidation of oxide compounds of Co, Cr, Mo, Mn. The preparation of nanomaterials of lithium-conducting lanthanum tantalate by sol-gel method Stage 4:Development of a technique of introducing molecules of redox indicators, dyes or phosphors in the oxide matrix Stage 5:Development of optical gas sensors (for hydrogen, ammonia, and hydrogen sulfide) and electrocatalytic sensors for NO2, CO, SO2, etc. Preparation and testing of electrode materials for CCS
|