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Adsorption of organic dyes by Fe3O4@C, Fe3O4@C@C, and Fe3O4@SiO2 magnetic nanoparticles / O. S. Ivanova, I. S. Edelman, A. E. Sokolov [et al.] // Bull. Russ. Acad. Sci. Phys. - 2023. - Vol. 87, Is. 3. - P. 338-342, DOI 10.3103/S1062873822701192. - Cited References: 17. - This research was funded partly by the Ministry of Science and Higher Education of the Russian Federation, project FWES-2021-0035. Ch. R. Lin and Yu. Zh. Chen thank the National Science and Technology Council of Taiwan for the financial support, MOST no. 110-2112-M-153-005- and no. 108-2923-M-153-001-MY3 . - ISSN 1062-8738. - ISSN 1934-9432
Аннотация: Fe3O4@C, Fe3O4@C@C, and Fe3O4@SiO2 core–shell nanoparticles are synthesized via thermal decomposition and coprecipitation. Samples are characterized via X-ray spectroscopy, transmission electron microscopy, and magnetometry. It is shown that the magnetic core of all nanoparticles is nanocrystalline and has crystal parameters corresponding to only one phase of Fe3O4, covered with a uniform shell of amorphous carbon or silicon oxide around 8 nm thick. Special attention is given to adsorption properties of the nanoparticles with respect to four dyes: Methylene blue, Congo Red, Eosin Y, and Rhodamine C. The high selectivity of Fe3O4@C nanoparticles to various dyes is revealed.

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Публикация на русском языке Адсорбция органических красителей магнитными наночастицами Fe3O4@C, Fe3O4@C@C, Fe3O4@SiO2 [Текст] / О. С. Иванова, И. С. Эдельман, А. Э. Соколов [и др.] // Изв. РАН. Сер. физич. - 2023. - Т. 87 № 3. - С. 390-395

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia
National Pingtung University, 900392, Pingtung, Taiwan

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Svetlitsky, E. S.; Светлицкий, Евгений Сергеевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Lin, Ch. R.; Chen, Yu. Zh.
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Adsorption properties and catalytic activity of Fe3O4-Ag nanostructures / O. S. Ivanova, Ch.-R. Lin, I. S. Edelman [et al.] // Appl. Surf. Sci. - 2024. - Vol. 665. - Ст. 160236, DOI 10.1016/j.apsusc.2024.160236. - Cited References: 48. - The work is supported by the Russian Science Foundation (project no. 23-22-10025, https://rscf.ru/project/ 23-22-10025/) and by the Krasnoyarsk Regional Fund of Science and Technology Support. The electron microscopy and EDS investigations were conducted in the SFU Joint Scientific Center. Magnetic investigations were carried out in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" . - ISSN 0169-4332. - ISSN 1873-5584
Кл.слова (ненормированные):
FeO-Ag nanostructures -- Nano-adsorbents -- Water purification methods -- Catalytic activity of nanoparticles
Аннотация: The morphology and magnetic properties as well as adsorption capacity and catalytic activity of Fe3O4-Ag nanoparticles synthesized by the solvothermal method were studied in dependence on the duration of the thermolysis process (3, 6, and 8 h). X-ray diffraction, transmission electron microscopy, and energy-dispersive spectroscopy measurements showed that the morphology of nanoparticles changed strongly as the duration of thermolysis increased. At 6 and 8 h duration, Fe3O4 nanocrystals grow and assemble into porous spherical globules with an Ag core (samples 2 and 3). These samples demonstrate high magnetization value and very low coercivity. The adsorption capacity of nanoparticles was studied with respect to two organic dyes: cationic methylene blue (MB) and anionic Congo red (CR). The particles showed preferential adsorption of the cationic dye. High catalytic activity towards four dyes: MB, methyl orange (MO), CR, and Rhodamine C (RhC) at the presence of NaBH4 is the remarkable property of these samples. The rate constant of the catalytic reaction was 1.4 min−1. Simultaneous exposure of CR and MO dyes to nanoparticles and NaBH4 caused their irreversible 100 % degradation while in the case of MB and RhC, a transition to their leuco form occurred.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Department of Applied Physics, National Pingtung University, Pingtung City 90003, Taiwan
Institute of Chemistry and Chemical Technology, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Lin, Chun-Rong; Edelman, I. S.; Эдельман, Ирина Самсоновна; Svetlitsky, E. S.; Светлицкий, Евгений Сергеевич; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Zharkov, S. M.; Жарков, Сергей Михайлович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Vorobyev, S. A.; Petrov, D. A.; Петров, Дмитрий Анатольевич; Lin, En-Szu
}
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    Agglomeration behavior of lipid-capped gold nanoparticles / R. Ranjan [et al.] // J. Nanopart. Res. - 2018. - Vol. 20, Is. 4. - Ст. 107, DOI 10.1007/s11051-018-4215-5. - Cited References:35. - The research was supported by the Russian Foundation for Basic Research [project no. 16-34-60100] and the state budget allocated to the fundamental research (project no. 0356-2017-0017). The authors thank Prof. Tatiana Volova, Prof. Evgenia Slyusareva, and Ms. Nina Slyusarenko of the Siberian Federal University for their assistance in the zeta potential and zeta-average analysis. . - ISSN 1388-0764. - ISSN 1572-896X
   Перевод заглавия: Характер агломирирования наночастиц золота, покрытых липидом

РУБ Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials
Рубрики:
COLORIMETRIC SENSOR ARRAY
   OPTICAL-PROPERTIES
   AGGREGATION
   CANCER
Кл.слова (ненормированные):
Gold nanoparticles -- Ionic interference -- Agglomeration -- Stabilization -- Lipid capping -- Nanobiotechnology applications
Аннотация: The current investigation deciphers aggregation pattern of gold nanoparticles (AuNPs) and lipid-treated AuNPs when subjected to aqueous sodium chloride solution with increasing ionic strengths (100–400 nM). AuNPs were synthesized using 0.29 mM chloroauric acid and by varying the concentrations of trisodium citrate (AuNP1 1.55 mM, AuNP2 3.1 mM) and silver nitrate (AuNP3 5.3 μM, AuNP4 10.6 μM) with characteristic LSPR peaks in the range of 525–533 nm. TEM analysis revealed AuNPs to be predominantly faceted nanocrystals with the average size of AuNP1 to be 35 ± 5 nm, AuNP2 15 ± 5 nm, AuNP3 30 ± 5 nm, and AuNP4 30 ± 5 nm and the zeta-average for AuNPs were calculated to be 31.23, 63.80, 26.08, and 28 nm respectively. Induced aggregation was observed within 10 s in all synthesized AuNPs while lipid-treated AuNP2 (AuNP2-L) was found to withstand ionic interferences at all concentration levels. However, lipid-treated AuNPs synthesized using silver nitrate and 1.55 mM trisodium citrate (AuNP3, AuNP4) showed much lower stability. The zeta potential values of lipid-treated AuNPs (AuNP1-L-1x/200, − 17.93 ± 1.02 mV; AuNP2-L-1x/200, − 21.63 ± 0.70; AuNP3-L-1x/200, − 14.54 ± 0.90; AuNP3-L-1x/200 − 13.77 ± 0.83) justified these observations. To summarize, AuNP1 and AuNP2 treated with lipid mixture 1 equals or above 1x/200 or 1x/1000 respectively showed strong resistance against ionic interferences (up to 400 mM NaCl). Use of lipid mixture 1 for obtaining highly stable AuNPs also provided functional arms of various lengths which can be used for covalent coupling.

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Держатели документа:
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Dept Biophys, Lab Bioluminescent Biotechnol, 79 Svobodny Prospect, Krasnoyarsk 660041, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, Inst Biophys, Akademgorodok 50-50, Krasnoyarsk 660036, Russia.
RAS, Krasnoyarsk Sci Ctr SB, Fed Res Ctr, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Electron Microscopy Lab, 79 Svobodny Prospect, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Ranjan, Rajeev; Kirillova, Maria A.; Esimbekova, Elena N.; Zharkov, S. M.; Жарков, Сергей Михайлович; Kratasyuk, Valentina A.; Russian Foundation for Basic Research [16-34-60100]; [0356-2017-0017]
}
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    Amino-functionalized Fe3O4@SiO2 core-shell magnetic nanoparticles for dye adsorption / C.-R. Lin, O. S. Ivanova, D. A. Petrov [et al.] // Nanomaterials. - 2021. - Vol. 11, Is. 9. - Ст. 2371, DOI 10.3390/nano11092371. - Cited References: 35. - The authors are thankful for the financial support the Russian Foundation for Basic Research, Grant № 19-52-52002, Ministry of Science and Technology of Taiwan, Grants MOST № 108-2923-M-153-001-MY3 and № 109-2112-M-153-003-, the Russian Foundation for Basic Research with Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, the research project number 19-42-240005: “Features of the electronic structure, magnetic properties and optical excitations in nanocrystals of the multifunctional magnetic chalcogenides Fe3S4 and FeSe”. We thank also the SFU Joint Scientific Center supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation, where the Transmission Electron Microscopy studies were carried out . - ISSN 2079-4991
   Перевод заглавия: Амино-функциональные магнитные наночастицы ядро-оболочка Fe3O4@SiO2 для адсорбции красителей
Кл.слова (ненормированные):
Fe3O4@SiO2 -- core-shell nanoparticles -- magnetic properties -- water pollutions -- fluorescence -- adsorption
Аннотация: Fe3O4@SiO2 core-shell nanoparticles (NPs) were synthesized with the co-precipitation method and functionalized with NH2 amino-groups. The nanoparticles were characterized by X-ray, FT-IR spectroscopy, transmission electron microscopy, selected area electron diffraction, and vibrating sample magnetometry. The magnetic core of all the nanoparticles was shown to be nanocrystalline with the crystal parameters corresponding only to the Fe3O4 phase covered with a homogeneous amorphous silica (SiO2) shell of about 6 nm in thickness. The FT-IR spectra confirmed the appearance of chemical bonds at amino functionalization. The magnetic measurements revealed unusually high saturation magnetization of the initial Fe3O4 nanoparticles, which was presumably associated with the deviations in the Fe ion distribution between the tetrahedral and octahedral positions in the nanocrystals as compared to the bulk stoichiometric magnetite. The fluorescent spectrum of eosin Y-doped NPs dispersed in water solution was obtained and a red shift and line broadening (in comparison with the dye molecules being free in water) were revealed and explained. Most attention was paid to the adsorption properties of the nanoparticles with respect to three dyes: methylene blue, Congo red, and eosin Y. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for all three dyes. The equilibrium data were more compatible with the Langmuir isotherm and the maximum adsorption capacity was reached for Congo red.

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Держатели документа:
Department of Applied Physics, National Pingtung University, Pingtung City, 90003, Taiwan
Kirensky Institute of Physics, FRC KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Lin, C. -R.; Ivanova, O. S.; Иванова, Оксана Станиславовна; Petrov, D. A.; Петров, Дмитрий Анатольевич; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Chen, Y. -Z.; Gerasimova, M. A.; Zharkov, S. M.; Жарков, Сергей Михайлович; Tseng, Y. -T.; Shestakov, N. P.; Шестаков, Николай Петрович; Edelman, I. S.; Эдельман, Ирина Самсоновна
}
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Analysis of the structure and magnetic properties of an interface in multilayered (Fe/Si) N nanostructures with the surface-sensitive XMCD method / M. S. Platunov [et al.] // JETP Letters. - 2014. - Vol. 99, Is. 12. - P. 706-711, DOI 10.1134/S002136401412011X. - Cited References: 26. - We are grateful to S.V. Komogortsev for stimulating discussions and to the management of BESSY II, Helmholtz-Zentrum Berlin, for the opportunity of performing experiments at the UE46-PGM1 beamline. This work was supported by the Russian Foundation for Basic Research (project nos. 13-02-01265a and 14-02-31051mol-a), by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. NSh- 2886.2014.2), by the Presidium of the Russian Academy of Sciences (program no. 24.34), and by the Ministry of Education and Science of the Russian Federation (state contract no. 02.G25.31.0043 and state task for research at Siberian Federal University in 2014). . - ISSN 0021-3640. - ISSN 1090-6487

РУБ Physics, Multidisciplinary
Рубрики:
RAY CIRCULAR-DICHROISM
   YIELD
   SPECTRA
   Fe
Аннотация: The structural and magnetic properties of (Fe/Si) N nanostructures obtained by successive deposition on the SiO2/Si(100) surface at a temperature of the substrate of 300 K have been studied. The thicknesses of all Fe and Si layers have been determined by transmission electron microscopy measurements. The magnetic properties have been studied by the X-ray magnetic circular dichroism (XMCD) method near the Fe L 3, 2 absorption edges. The orbital (m l ) and spin (m S ) contributions to the total magnetic moment of iron have been separated. The thicknesses of magnetic and nonmagnetic iron silicide on the Si/Fe and Fe/Si interfaces have been determined with the surface sensitivity of the XMCD method and the model of the interface between the nonmagnetic and weakened magnetic phases.

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Публикация на русском языке Анализ структуры и магнитных свойств интерфейса в многослойных наноструктурах (Fe/Si)N с применением поверхностно-чувствительного метода XMCD [Текст] / М. С. Платунов [и др.] // Письма в Журн. эксперим. и теор. физ. - 2014. - Т. 99 Вып. 11-12. - С. 817-823

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
Helmholtz Zentrum Berlin, BESSY II, D-12489 Berlin, Germany

Доп.точки доступа:
Platunov, M. S.; Платунов, Михаил Сергеевич; Varnakov, S. N.; Варнаков, Сергей Николаевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич; Weschke, E.; Schierle, E.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Russian Foundation for Basic Research [13-02-01265a, 14-02-31051mol-a]; Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools [NSh- 2886.2014.2]; Presidium of the Russian Academy of Sciences [24.34]; Ministry of Education and Science of the Russian Federation [02.G25.31.0043]
}
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Antiferromagnetic resonance and magnetic anisotropy in PrxY1−xFe3(BO3)4 crystals in the region of the magnetic structure transformation “easy axis – easy plane” / A. I. Pankrats, S. M. Zharkov, G. M. Zeer, I. A. Gudim // J. Alloys Compd. - 2022. - Vol. 909. - Ст. 164821, DOI 10.1016/j.jallcom.2022.164821. - Cited References: 37. - The authors acknowledge the assistance of R. Mironov in some resonance measurements. The SEM and EDS investigations were conducted in the SFU Joint Scientific Center supported by the State assignment (#FSRZ-2020–0011) of the Ministry of Science and Higher Education of the Russian Federation . - ISSN 0925-8388
Кл.слова (ненормированные):
Magnetically ordered materials -- Rare earth alloys and compounds -- Spin dynamics -- Anisotropy -- Magnetic measurements -- Scanning electron microscopy, SEM
Аннотация: The spin dynamics, magnetic structures and magnetic anisotropy of single crystals PrxY1−xFe3(BO3)4 have been studied using antiferromagnetic resonance (AFMR) in a wide range of frequencies, magnetic fields, and temperatures. The frequency-field dependences of AFMR for the crystals with x = 0.25 and 0.45 are characteristic of antiferromagnets with the easy plane (EP) anisotropy. The crystals with x = 0.75 and 1.0 exhibit frequency-field dependences that are typical for antiferromagnets with the easy axis (EA) anisotropy. In these crystals, a significant decrease in the effective anisotropy fields of praseodymium upon the transition to the spin-flop state has been found. It is shown that this is the main reason for the large lability intervals, within which the regions of coexistence of the collinear and spin-flop states overlap. In the crystal with x = 0.67, the magnetic field applied along the trigonal axis of the crystal leads to the spin reorientation transition from the EA to the EP state. A magnetic phase diagram of the states on the plane "magnetic field - temperature" is built. In this crystal, the effective anisotropy field of praseodymium also decreases upon the transition to the field-induced EP state. Diamagnetic dilution of the praseodymium subsystem leads to the contribution of this subsystem to the total anisotropy field depending almost linearly on the praseodymium concentration.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodny st., Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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    Antimicrobial properties of nanofiltration membranes modified with silver nanoparticles / R. Khaydarov, O. Gapurova, M. Abdukhakimov [et al.] // Emerg. Mater. - 2022. - Vol. 5, Is. 5. - P. 1477-1483, DOI 10.1007/s42247-021-00330-2. - Cited References: 31. - The SEM and TEM analysis was carried out in the SFU Joint Scientific Center under the support of the Ministry of Science and Higher Education of the Russian Federation (#FSRZ-2020-0011) . - ISSN 2522-5731. - ISSN 2522-574X
   Перевод заглавия: Антимикробные свойства нанофильтрационных мембран, модифицированных наночастицами серебра

РУБ Materials Science, Multidisciplinary

Кл.слова (ненормированные):
Nanofiltration -- Membrane -- Silver -- Nanoparticle -- Antimicrobial -- Biofouling -- Polyhexamethylene biguanide
Аннотация: The growth of bacteria and fungi on a nanofiltration (NF) membrane is known to reduce its permeability and lifetime and increase overall energy use. Over the last decade, application of silver nanoparticles (AgNPs) has shown to present a strong potential in preventing biofouling of NF membrane processes. The paper deals with a novel facile method developed to in situ incorporate nanosilver stabilized with the polyhexamethylene biguanide hydrochloride (PHMB) onto the commercial NF membrane surface. The scanning electron microscopy (SEM) investigations confirmed a uniform distribution of AgNPs on the surface of NF membrane although AgNPs tend to agglomerate into nano-sized colloidal clusters. Our results showed that AgNPs had little impact on the performance of the NF membrane, including salt rejection and water permeation properties. To evaluate the antibacterial properties of nanocomposite membranes, a "time-kill" analysis, a microbiological technique for measuring the change in a population of microorganisms under the impact of a specific sample, has been used against representatives of Gram-positive and Gram-negative bacteria. Inductively coupled mass spectrometry (ICP-MS) was used to study kinetics of Ag release from modified NF membrane. Leaching rates of Ag were low that will possibly result in long-established antimicrobial and antifungal properties. The present research offers a potential for its further use as a new type of modified NF membrane mitigating biofouling.

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Держатели документа:
Acad Sci Uzbek, Inst Nucl Phys, 1 Xuroson, Tashkent 100214, Uzbekistan.
JSS Acad Higher Educ & Res, Dept Pharmacol, JSS Coll Pharm, Ooty 643001, Tamil Nadu, India.
Siberian Fed Univ, 79 Svobodny Ave, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 5038, Russia.
Fed Res Ctr KSC SB RAS, Sukachev Inst Forest, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Khaydarov, R.; Gapurova, O.; Abdukhakimov, M.; Sadikov, I.; Garipov, I.; Krishnamurthy, P. T.; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Зеер, Галина М.; Abolentseva, P. A.; Prudnikova, S. V.; Evgrafova, S. Y.; SFU Joint Scientific Center; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0011]
}
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Bio-functionalization of phytogenic Ag and ZnO nanobactericides onto cellulose films for bactericidal activity against multiple drug resistant pathogens / S. Baker [et al.] // J. Microbiol. Methods. - 2019. - Vol. 159. - P. 42-50, DOI 10.1016/j.mimet.2019.02.009. - Cited References: 59 . - ISSN 0167-7012. - ISSN 1872-8359

РУБ Biochemical Research Methods + Microbiology
Рубрики:
SILVER NANOPARTICLES
   ANTIMICROBIAL ACTIVITY
   SIZE
   COMPOSITES
   MEMBRANE
Кл.слова (ненормированные):
Bupleurum aureum -- Rio-functionalization -- Silver nanobactericides -- Zinc oxide nanobactericides -- Multi-drug resistance pathogens -- Bacterial cellulose
Аннотация: The present study describes the synthesis of silver and zinc oxide nanobactericides from the phytogenic source Bupleurum aureum The synthesized nanobactericides were characterized and evaluated for bio-functionalization onto bacterial cellulose membrane which was synthesized by Komagataeibactencylinus B-12068 culture strain. The synthesis of nanobacterides were initially confirmed using UV-Visible spectroscopy which indicated localized surface resonance (LSPR) peaks at 415 nm for silver nanobactericides and 280 nm for zinc nanobactericides. The nature of the capping agent for synthesized nanobactericides was predicted using FTIR which confirmed the presence of functional moieties. XRD analysis revealed their crystalline nature while morphological characteristics were studied using TEM which confirmed the polydispersity of nanobactericides with the average size in the range of 20-25 nm. The nanobactericides were tested for their antimicrobial activity against seven multi-drug resistant pathogens which were clinically isolated from patients suffering from a myriad of microbial infections. The tested pathogens had antimicrobial resistance to ten different antibiotics and have been reported to be the major cause of nosocomial infections. The nanobactericides displayed significant activity against the test pathogens. Silver nanobactericides showed the highest activity against Escherichia coli strain 55 with a 24 mm zone of inhibition while zinc oxide nanobactericides displayed the highest activity against methicillinresistant Staphylococcus aureus (MRSA) with a 20 mm inhibition zone. The bio- functionalized cellulose films (BCF) were characterized using SEM along with physicochemical analysis. The BCF's were evaluated for anti-bacterial activity against test pathogens which resulted in marked antimicrobial potential against multi-drug resistant bacteria and therefore has the potential to be utilized as an efficient alternative to counter drug resistant pathogens.

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Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Sch Fundamental Biol & Biotechnol, Krasnoyarsk, Russia.
Krasnoyasrk State Med Univ, Dept Microbiol, Krasnoyarsk Partizana Zheleznyakast 1, Krasnoyarsk 660022, Russia.
RAS, KSC SB, Fed Res Ctr, Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Petr & Nat Gas Engn, Krasnoyarsk, Russia.

Доп.точки доступа:
Baker, Syed; Prudnikova, Svetlana V.; Shumilova, Anna A.; Perianova, Olga V.; Zharkov, S. M.; Жарков, Сергей Михайлович; Kuzmin, A.
}
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    Bio-hybridization of nanobactericides with cellulose films for effective treatment against members of ESKAPE multi-drug-resistant pathogens / S. Baker [et al.] // Appl. Nanosci. - 2018. - Vol. 8, Is. 5. - P. 1101-1110, DOI 10.1007/s13204-018-0717-9. - Cited References: 51. - Authors are thankful for Ministry of Education and Science of the Russian Federation for providing funding under the scheme of 5-100: Russian Academic Excellence Project. Authors are grateful for facilities provided by Siberian Federal University to carry out the present study. . - ISSN 2190-5509. - ISSN 2190-5517
   Перевод заглавия: Биогибридизация нано-бактерицидов с целлюлозными пленками для эффективного воздействия на представителей группы патогенов ESKAPE, резистентных к различным препаратам

РУБ Nanoscience & Nanotechnology
Рубрики:
SILVER NANOPARTICLES
BACTERIAL CELLULOSE
ANTIBIOTIC-RESISTANCE
Кл.слова (ненормированные):
ESKAPE -- Bio-hybridization -- Silver nanobactericides -- Phytogenic -- Bactericidal activity
Аннотация: The rapid expansion of drug-resistant pathogens has created huge global impact and development of novel antimicrobial leads is one of the top priority studies in the current scenario. The present study aims to develop bio-hybridized nanocellulose films which comprise of phytogenic silver nanobactericides. The nanobactericides were synthesized by treating 1 mM silver nitrate with aqueous extract of Chamerion angustifolium which reduced the metal salt to produce polydispersed nanobactericides which were tested against the members of ESKAPE drug-resistant communities. The synthesized silver nanobactericides were subjected to characterization with UV–visible spectra which displayed maximum absorbance at 408 nm. The bio-molecular interaction of phyto-constituents to mediate synthesis and stabilization of nanobactericides was studied with Fourier-transform infrared spectroscopy (FTIR) which depicted functional groups associated with nanobactericides. The crystalline nature was studied with X-ray diffraction (XRD) which showed Bragg’s intensities at 2θ angle which denoted (111), (200), (220), and (311) planes. The morphological characteristics of silver nanobactericides were defined with transmission electron Microscopy (TEM) image which displayed polydispersity of silver nanobactericides with size ranging from 2 to 40 nm. The synthesized nanobactericides showed a significant activity against MRSA strain with 21 mm zone of inhibition. The minimal inhibitory concentration of silver nanobactericides to inhibit the growth of test pathogens was also determined which ranged between 0.625 and 1.25 μg/ml. The silver nanobactericides were bio-hybridized onto nanocellulose films produced by Komagataeibacter xylinus B-12068 culture strain. The films were dried to determine the mechanical properties which showed increased in Young’s modulus and tensile strength in comparison with control bacterial cellulose films. Overall, the results obtained in the present investigation are promising enough to report bactericidal activity of bio-hybridized nanobactericidal films against ESKAPE. These communities are reported to cause severe threats to all forms of lives irrespective to their habitats which can lead to huge economical crisis.

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Держатели документа:
Siberian Fed Univ, Lab Biotechnol New Mat, Svobodnyy Pr 79, Krasnoyarsk 660041, Russia.
SB RAS, Krasnoyarsk Sci Ctr, Fed Res Ctr, Inst Biophys, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Sch Fundamental Biol & Biotechnol, Krasnoyarsk, Russia.
Krasnoyasrk State Med Univ, Dept Microbiol, Krasnoyarsk Partizana Zheleznyaka St 1, Krasnoyarsk 660022, Russia.
SB RAS, Fed Res Ctr KSC, Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Petr & Nat Gas Engn, Krasnoyarsk, Russia.

Доп.точки доступа:
Baker, Syed; Volova, Tatiana; Prudnikova, Svetlana V.; Shumilova, Anna A.; Perianova, Olga, V; Zharkov, S. M.; Жарков, Сергей Михайлович; Kuzmin, A. R.; Kondratenka, Olga; Kiryukhin, Bogdan; Shidlovskiy, Ivan P.; Potkina, Zoya K.; Khohlova, Olga Y.; Lobova, Tatiana I.; Ministry of Education and Science of the Russian Federation under the scheme of 5-100: Russian Academic Excellence Project
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10.

    Carbon double coated Fe3O4@C@C nanoparticles: Morphology features, magnetic properties, dye adsorption / C. R. Lin, O. S. Ivanova, I. S. Edelman [et al.] // Nanomaterials. - 2022. - Vol. 12, Is. 3. - Ст. 376, DOI 10.3390/nano12030376. - Cited References: 44. - The work was supported financially by the Russian Foundation for Basic Research, Grant No. 19-52-52002 and Ministry of Science and Technology of Taiwan, Grants MOST No. 108-2923-M-153-001-MY3 and No. 109-2112-M-153-003-. The support was obtained also from the Joint Scientific Center of the Siberian Federal University supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation, where the Transmission Electron Microscopy studies were carried out . - ISSN 2079-4991
   Перевод заглавия: Наночастицы Fe3O4@C@C с двойным углеродным покрытием: Морфологические особенности, магнитные свойства, адсорбция красителей

РУБ Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
SOLID-PHASE EXTRACTION
FE3O4 NANOPARTICLES
PROFILE REFINEMENT
Кл.слова (ненормированные):
core-shell Fe3O4@C nanoparticles -- core-shell Fe3O4@C@C nanoparticles -- magnetic properties -- dyes adsorption
Аннотация: This work is devoted to the study of magnetic Fe3O4 nanoparticles doubly coated with carbon. First, Fe3O4@C nanoparticles were synthesized by thermal decomposition. Then these synthesized nanoparticles, 20–30 nm in size were processed in a solution of glucose at 200 °C during 12 h, which led to an unexpected phenomenon – the nanoparticles self-assembled into large conglomerates of a regular shape of about 300 nm in size. The morphology and features of the magnetic properties of the obtained hybrid nanoparticles were characterized by transmission electron microscopy, differential thermo-gravimetric analysis, vibrating sample magnetometer, magnetic circular dichroism and Mössbauer spectroscopy. It was shown that the magnetic core of Fe3O4@C nanoparticles was nano-crystalline, corresponding to the Fe3O4 phase. The Fe3O4@C@C nanoparticles presumably contain Fe3O4 phase (80%) with admixture of maghemite (20%), the thickness of the carbon shell in the first case was of about 2–4 nm. The formation of very large nanoparticle conglomerates with a linear size up to 300 nm and of the same regular shape is a remarkable peculiarity of the Fe3O4@C@C nanoparticles. Adsorption of organic dyes from water by the studied nanoparticles was also studied. The best candidates for the removal of dyes were Fe3O4@C@C nanoparticles. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for cationic dye methylene blue (MB) and anionic dye Congo red (CR). The equilibrium data were more consistent with the Langmuir isotherm and were perfectly described by the Langmuir–Freundlich model.

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Держатели документа:
Natl Pingtung Univ, Dept Appl Phys, Pingtung City 90003, Taiwan.
RAS, FRC KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660041, Russia.
RAS, FRC KSC SB, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Lin, Chun-Rong; Ivanova, O. S.; Иванова, Оксана Станиславовна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Knyazev, Yu. V.; Князев, Юрий Владимирович; Zharkov, S. M.; Жарков, Сергей Михайлович; Petrov, D. A.; Петров, Дмитрий Анатольевич; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Svetlitsky, E. S.; Светлицкий, Евгений Сергеевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Solovyov, Leonid A.; Chen, Ying-Zhen; Tseng, Yaw-Teng; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52002]; Ministry of Science and Technology of TaiwanMinistry of Science and Technology, Taiwan [108-2923-M-153-001-MY3, 109-2112-M-153-003]; Joint Scientific Center of the Siberian Federal University [FSRZ-2020-0011]; Ministry of Science and Higher Education of the Russian Federation
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