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Article
Sorption of Radium-226 on Few-Layer Graphene Synthesized under Conditions of Self-Propagating High-Temperature Synthesis
Human industrial activity is accompanied by the formation of vast volumes of water contaminated with radionuclides, including radium-226, which create serious danger to people. Graphene nanostructures are amon...
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Article
Few-Layer Graphene Structures as a Promising Mycotoxin Sorbent
It has been experimentally established that samples of low-layer graphene, synthesized by carbonization of plant materials (lignin, cellulose, and spruce bark) under conditions of self-propagating high-tempera...
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Article
ODMR Active Bright Sintered Detonation Nanodiamonds Obtained Without Irradiation
We present the results of study the structure and composition of microcrystalline diamonds obtained by high-pressure high temperature sintering of detonation nanodiamond particles. Using optical detected magne...
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Article
Adsorption of Rhodamine G from Aqueous Solutions onto Particles of Few-Layer Graphene Prepared by Self-Propagating High-Temperature Synthesis
The ability of few-layer graphene prepared by self-propagating high-temperature synthesis to adsorb Rhodamine G was studied. The dependences of the sorption capacity of few-layer graphene particles on the Rhod...
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Article
Open Access6H–SiC Nanoparticles Integrated with an Atomic Force Microscope for Scanning Quantum Sensors
We fabricate a quantum magnetic field sensor based on the silicon vacancy centers in 6H–SiC using atomic force microscopy technique. The quantum sensing is based on optically detected magnetic resonance. To im...
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Article
Biomass of Sosnowsky’s Hogweed as Raw Material for Obtaining 2D Carbonic Nanostructures
The possibility of carbonizing the Sosnowsky’s hogweed (Heracleum sosnowskyi) biomass for obtaining carbonic nanomaterials was investigated. The component composition was characterized and the parameters of the s...
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Article
Influence of Graphene Nanoplatelets Synthesized by Self-Propagating High-Temperature Synthesis on the Hardness and Thermal Conductivity of an Aluminum Composite
Graphene nanoplatelets (GNPs) obtained by self-propagating high-temperature synthesis are first tested as an additive to an aluminum-based composite. The introduction of up to 6 wt % GNP made it possible to do...
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Article
Structure and Paramagnetic Properties of Graphene Nanoplatelets Prepared from Biopolymers Using Self-Propagating High-Temperature Synthesis
We propose a novel approach to prepare graphene nanoplatelets from cyclic biopolymers using self-propagating high-temperature synthesis. The synthesized graphene nanoplatelets have micrometer-scale linear size...
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Article
Magnetic Properties of Fullerene–Thermally Exfoliated Graphite Composites Doped with Sodium
The magnetic properties (field range H = 0–50 kOe, temperature range T = 3–300 K), and structural features of a sodium-doped carbon composite material based on fullerene C60 and thermally exfoliated graphite (TEG...
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Article
Evolution of Triplet Paramagnetic Centers in Diamonds Obtained by Sintering of Detonation Nanodiamonds at High Pressure and Temperature
The electron paramagnetic resonance (EPR) spectra of triplet centers in detonation nanodiamonds (DNDs) and diamond single crystals of submicrometer size, synthesized from those DNDs at high pressures and tempe...
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Article
Identification of paramagnetic nitrogen centers (P1) in diamond crystallites synthesized via the sintering of detonation nanodiamonds at high pressure and temperature
Diamond single crystals synthesized from powder detonation nanodiamonds (DNDs) by means of treatment at high pressures (P ~ 7 GPa) and temperatures (T > 1300°C) have been studied by electron paramagnetic resonanc...
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Article
Growth of diamond microcrystals by the oriented attachment mechanism at high pressure and high temperature
For the first time it has been experimentally shown that a powder of detonation nanodiamonds (DND) and a saturated acyclic hydrocarbon, mono- or dibasic alcohol, used as the reaction mixture after treatment at...
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Article
Spin centers in SiC for all-optical nanoscale quantum sensing under ambient conditions
Level anticrossing (LAC) spectroscopy has been demonstrated on a family of uniaxially oriented spin color centers with S = 3/2 in the ground and excited states in hexagonal 4H-, 6H-, and rhombic 15R-SiC polytypes...
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Article
Defects in Nanodiamonds: Application of High-Frequency cw and Pulse EPR, ODMR
Different aspects of applications of electron paramagnetic resonance (EPR) based techniques including high frequency (HF) electron spin echo (ESE), electron-nuclear double resonance (ENDOR) and optically dete...
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Article
Effect of fullerenes on the activation energy of the graphite-diamond phase transition
The modification of graphite used in diamond synthesis with low concentrations of the fullerene C60-C70 extract (from 0.045 to 0.225 wt % of graphite mass) in the presence of a Ni-Mn metal catalyst at a pressure ...
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Article
Room Temperature High-Field Spin Dynamics of NV Defects in Sintered Diamonds
Sintered oriented nanodiamond arrays with the extremely high concentrations of the nitrogen-vacancy (NV) centers (up to 103 ppm) were investigated by the W-band (94 GHz) electron spin echo electron paramagnetic r...
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Article
Properties of copper-detonation nanodiamond composites obtained by spray drying
Nanostructural copper-detonation nanodiamond (DND) composites have been obtained by the method of spray drying. The technological process consists in spraying and drying a mixture of an aqueous copper salt sol...
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Article
Filler-matrix thermal boundary resistance of diamond-copper composite with high thermal conductivity
A composite material with a high thermal conductivity is obtained by capillary infiltration of copper into a bed of diamond particles of 400 μm size, the particles having been pre-coated with tungsten. The mea...
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Article
Small-angle neutron scattering study of high-pressure sintered detonation nanodiamonds
The structure of detonation diamonds sintered at a high pressure (7 GPa) and temperatures of 1200–1700°C has been investigated by small-angle neutron scattering. It is shown that sintering leads to an increase...
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Article
Synthesis and properties of superhard crystalline materials in boron-carbon-nitrogen system
The possibility of creating single-crystalline materials in the boron-carbon-nitrogen system has been studied. The thermal conductivity of composites obtained by sintering a mixture of natural microcrystalline...