A5058649140- Advanced Photocatalysis Techniques
- Gas Sensing Nanomaterials and Sensors
- Copper-based nanomaterials and applications
- TiO2 Photocatalysis and Solar Cells
- Catalytic Processes in Materials Science
- Advanced Nanomaterials in Catalysis
- MXene and MAX Phase Materials
- Quantum Dots Synthesis And Properties
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- 2D Materials and Applications
- Catalysis and Oxidation Reactions
- Electrochemical Analysis and Applications
- Perovskite Materials and Applications
- CO2 Reduction Techniques and Catalysts
- Polyoxometalates: Synthesis and Applications
- Electronic and Structural Properties of Oxides
- Covalent Organic Framework Applications
- Advanced oxidation water treatment
- Ammonia Synthesis and Nitrogen Reduction
- Chalcogenide Semiconductor Thin Films
- Pigment Synthesis and Properties
- Electrocatalysts for Energy Conversion
- Transition Metal Oxide Nanomaterials
Boreskov Institute of Catalysis
2020-2024
Siberian Branch of the Russian Academy of Sciences
2023
Novosibirsk Tuberculosis Research Institute
2020
Two series of bimetallic photocatalysts (0.5% Pt/0.01–0.5% IrOx/g-C3N4 and 0.1% Pt/0.01–0.1% IrOx/g-C3N4) were synthesized by the thermolysis melamine cyanurate a successive deposition platinum iridium labile complexes (Me4N)2[Pt2(μ-OH)2(NO3)8] fac-[Ir(H2O)3(NO2)3. The studied set physicochemical analysis techniques. Platinum exists in two states, with up to 60% metallic form rest Pt2+ state, while is primarily oxidized Ir3+ which was determined X-ray photoelectron spectroscopy (XPS)....
The series of Cd1-xZnxS (x = 0–1.0) photocatalysts and Cd1-xZnxS/FTO thin film photoelectrodes were prepared. obtained samples studied by X-ray diffraction method (XRD), diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), N2 low temperature adsorption. tested in the reaction hydrogen production from Na2S/Na2SO3 solution under visible light irradiation. photocurrents measured aqueous Na2Sn NaCl. It was shown that target properties evolution photocurrent are changed...
Photocatalysts based on g-C3N4 have been investigated in the CO2 reduction reaction under visible light irradiation (λ = 397, 427, 452 nm). were prepared by melamine calcination at 500–600 °C with further platinum deposition (0.1–1.0 wt.%). The effect of preparation conditions and method physicochemical properties activity photocatalysts was studied. X-ray photoelectron spectroscopy, absorption diffraction, high resolution transmission electron microscopy, UV-Vis low temperature nitrogen...
The nature of the sacrificial agent affects transformations a Zn(OH)<sub>2</sub> co-catalyst during photocatalytic hydrogen production.
The systematic study of the platinum speciation in sulfuric acid solutions (IV) hydroxide {[Pt(OH)4(H2O)2], HHPA} was performed with use a combination methods. Depending on prevailing Pt form, three regions H2SO4 concentration were marked: (1) up to 3 M forms unstable gradually generating PtO2·xH2O particles; (2) 4-12 H2SO4, where series mononuclear aqua-sulfato complexes ([Pt(SO4)n(H2O)6-n]4-2n, n = 0···4) dominate; and (3) 12 above, where, along [Pt(SO4)n(H2O)6-n]4-2n species, polynuclear...
A combination of multinuclear nuclear magnetic resonance spectroscopy and theoretical calculation based on density functional theory was used for a speciation study Pt in solutions prepared either by the interaction [Pt(OH)6]2- with gaseous CO2 an alkaline solution platinum(IV) hydroxide ([Pt(OH)4(H2O)2]) or dissolution [Pt(OH)4(H2O)2] aqueous KHCO3 solution. The formed contained coexisting Pt(IV) carbonato complexes κ1- κ2-coordination modes. gradual condensation mononuclear species such...
Photocatalytic CO2 reduction and the production of hydrogen are urgent tasks green energy. One most studied semiconductor photocatalysts for this purpose is titanium dioxide. However, it has a number fundamental limitations that do not allow its application such on an industrial scale. Another class promising materials, which being investigated very actively, two-dimensional materials based MXenes. In work, we present first results photocatalytic evolution using TiNbC/TiO2 heterostructures...
Two types of photocatalysts, 1%Pt/Cd1−xZnxS/g-C3N4 (x = 0.2–0.3) and Cd1−xZnxS/1%Pt/g-C3N4 0.2–0.3), were synthesized by varying the deposition order platinum, a solid solution cadmium zinc sulfides onto surface g-C3N4. The characterization photocatalysts showed that, for 1%Pt/Cd1−xZnxS/g-C3N4, small platinum particles deposited sulfides; in case Cd1−xZnxS/1%Pt/g-C3N4, enlarged clusters located on graphitic carbon nitride. Based structure we assumed first case, type II heterojunctions and,...
Simultaneous presence of ethanol and methylene blue was shown to provide the most efficient hydrogen production removal.
In this work, photocatalysts based on titanium dioxide were synthesized by high-energy ball milling of commercial in the anatase modification.Using a complex physicochemical methods, including XRD, low-temperature nitrogen adsorption, XPS and TEM, it was shown that leads to phase transformations formation several phases dioxide, namely high-pressure phase, monoclinic rutile, except for addition, there is change crystalline size value specific surface area grows from 8 31 m 2 /g.It found...
In this study, we proposed photocatalysts based on graphite-like carbon nitride with a low content (0.01–0.5 wt.%) of noble metals (Pd, Rh) for hydrogen evolution under visible light irradiation. As precursors rhodium and palladium, labile aqua nitrato complexes [Rh2(H2O)8(μ-OH)2](NO3)4∙4H2O (Et4N)2[Pd(NO3)4], respectively, were proposed. To obtain metallic particles, reduction was carried out in H2 at 400 °C. The synthesized studied using X-ray diffraction, photoelectron spectroscopy,...
Ternary composite photocatalysts based on titania and solid solutions of CdS ZnS were prepared studied by a set physicochemical methods including XRD, XPS, HRTEM, UV-vis spectroscopy, electrochemical tests. Two synthetic techniques platinization Cd1-x Zn x S/TiO2 compared. In the first case, platinum was deposited surface synthesized S (x = 0.2-0.3)/TiO2 P25; in second one, 0.2-0.3) Pt/TiO2 P25. The photocatalytic properties obtained samples compared hydrogen evolution from TEOA aqueous...