Microdispersed Ti/B/N Materials Synthesized in Chain Reactions in Processes Initiated by Microwaves of a High-Power Gyrotron: Structure and Cytotoxicity

Skvortsova, Nina N.; Obraztsova, Ekaterina A.; Stepakhin, Vladimir D.; Konchekov, Evgeny M.; Gayanova, Tatiana E.; Vasilieva, Lilja A.; Lukianov, Dmitrii A.; Sybachin, Andrey V.; Skvortsov, Dmitry A.; Gusein-Zade, Namik G.; Shishilov, Oleg N.

doi:10.1080/15361055.2023.2255442

Cited by 3 publications

(3 citation statements)

References 29 publications

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“…Samples of particles from the starting and resulting mixtures were dispersed in water (20 g/L) and treated with ultrasound for 10 min (five series of 2 min). It should be noted that the particles of the Al 2 O 3 + Ag mixtures sedimented faster than the particles of the Ti + B and Ti + BN mixtures tested earlier according to the same protocol [38]. This made it harder to estimate the local concentration since the cells were also affected by the sedimentation of the substance deposited directly on the used adhesion cells.…”

Section: Cytotoxicity Of Al 2 O 3 -Supported Silver Nanoparticles Aga...mentioning

confidence: 95%

“…A detailed description of the setup is given in refs. [34][35][36][37][38]40]. The gyrotron generated pulses of microwave radiation, which varied from 2 to 8 ms in duration and from 150 to 400 kW in power.…”

Section: Plasma Chemical Synthesismentioning

confidence: 99%

“…Earlier, the same approach was applied to estimate the toxicity of nano-and microparticles synthesized from mixtures of titanium and boron or boron nitride powders (Ti + B, Ti + BN cub , and Ti + BN hex ). The bioactivity was estimated utilizing a bacterial cell model in vitro [38].…”

Section: Introductionmentioning

confidence: 99%

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The Synthesis and Analysis of the Cytotoxicity of Al2O3-Supported Silver Nanoparticles Prepared by the Plasma Chemical Process Initiated by Pulsed MW Radiation in the Al2O3–Ag Powder Mixtures

Skvortsova,

Akhmadullina,

Vafin

et al. 2024

IJMS

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An original plasma chemical process initiated by microwave discharge in a mixture of metal and dielectric powders was applied to prepare specific materials, which consisted of microsized spherical particles of aluminum oxide covered with silver nanoparticles. The prepared materials are highly uniform in shape, size distribution, and composition. Their cytotoxicity was investigated using the human cell lines MCF7, HEK293T, A549, and VA-13 and the bacterial strains E. coli JW5503 (ΔtolC) and E. coli K12. Their cytotoxicity was found not to exceed the cytotoxicity of the starting materials. Thus, the prepared materials can be considered highly promising for catalysis and biotechnology applications.

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Section: Cytotoxicity Of Al 2 O 3 -Supported Silver Nanoparticles Aga...mentioning

confidence: 95%

Section: Plasma Chemical Synthesismentioning

confidence: 99%

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The Synthesis and Analysis of the Cytotoxicity of Al2O3-Supported Silver Nanoparticles Prepared by the Plasma Chemical Process Initiated by Pulsed MW Radiation in the Al2O3–Ag Powder Mixtures

Skvortsova,

Akhmadullina,

Vafin

et al. 2024

IJMS

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Obtaining Plasma–Dust Clouds from Meteoritic Matter, its Analogs and Simulants of Lunar Regolith Using Microwave Discharge

Borzosekov,

Akhmadullina,

Sokolov

et al. 2024

Sol Syst Res

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Abstract— In the experiment, plasma–dust clouds were obtained from the substance of the Tsarev meteorite, a simulant of lunar regolith LMS-1D and ilmenite concentrate using a microwave discharge in powder media. For each of the samples, the dynamics of the development of the discharge and the formation of a plasma–dust cloud with subsequent relaxation after the end of the microwave pulse were recorded. From the emission spectra of the plasma and the surface of a solid body, the temperatures of the gas, electrons and surface were determined. A comparison of the phase and elemental composition of the initial samples and samples after exposure to plasma showed that there is no significant change in the composition. However, scanning electron microscopy results clearly indicate spheroidization of the original angular and irregularly shaped particles. The appearance of spherical particles is also observed, the dimensions of which are larger than the linear dimensions of the particles in the original sample. The results obtained indicate the possibility of using such experiments to study chemical and plasma-chemical processes of synthesis and modification of substances under conditions of plasma–dust clouds encountered in space phenomena.

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Получение Плазменно-Пылевых Облаков Из Метеоритного Вещества, Его Аналогов И Имитаторов Лунного Реголита С Помощью Микроволнового Разряда

Борзосеков,

Ахмадуллина,

Соколов

et al. 2024

Astronomičeskij vestnik

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В эксперименте получены плазменно-пылевые облака из вещества метеорита Царев, имитатора лунного реголита LMS-1D и ильменитового концентрата с помощью микроволнового разряда в порошковых средах. Для каждого из образцов зарегистрирована динамика развития разряда и образования плазменно-пылевого облака с последующей релаксацией после окончания микроволнового импульса. По спектрам излучения плазмы и поверхности твердого тела определены температуры газа, электронов и поверхности. Проведенное сравнение фазового и элементного состава исходных образцов и образцов после воздействия плазмы показало, что существенного изменения состава не происходит. Однако результаты сканирующей электронной микроскопии четко указывают на сфероидизацию исходных угловатых частиц и частиц неправильной формы. Также наблюдается появление сферических частиц, размеры которых больше, чем линейные размеры частиц в исходном образце. Полученные результаты указывают на возможность использования таких экспериментов для исследования химических и плазмохимических процессов синтеза и модификации веществ в условиях плазменно-пылевых облаков, встречающихся в космических явлениях.

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Microdispersed Ti/B/N Materials Synthesized in Chain Reactions in Processes Initiated by Microwaves of a High-Power Gyrotron: Structure and Cytotoxicity

Cited by 3 publications

References 29 publications

The Synthesis and Analysis of the Cytotoxicity of Al2O3-Supported Silver Nanoparticles Prepared by the Plasma Chemical Process Initiated by Pulsed MW Radiation in the Al2O3–Ag Powder Mixtures

The Synthesis and Analysis of the Cytotoxicity of Al2O3-Supported Silver Nanoparticles Prepared by the Plasma Chemical Process Initiated by Pulsed MW Radiation in the Al2O3–Ag Powder Mixtures

Obtaining Plasma–Dust Clouds from Meteoritic Matter, its Analogs and Simulants of Lunar Regolith Using Microwave Discharge

Получение Плазменно-Пылевых Облаков Из Метеоритного Вещества, Его Аналогов И Имитаторов Лунного Реголита С Помощью Микроволнового Разряда

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