Mykola Seredych

Mykola Seredych
Drexel University | DU · A.J. Drexel Nanotechnology Institute (DNI)

PhD in Analytical Chemistry

About

141
Publications
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Introduction
Mykola Seredych currently works at the A.J. Drexel Nanotechnology Institute (DNI), Drexel University. Mykola does research in Materials Chemistry, Nanotechnology and Physical Chemistry. Their current project is development of carbon-based materials to remove extra corporeally anti- and pro-inflammatory cytokines such as tumor necrosis factor-a (TNF-a), interleukin-1b (IL-1b), IL-8, and IL-6 from the circulatory blood stream. We are working on integrating MXene-drug delivery systems into the body to fight infection and disease.

Publications

Publications (141)
Article
Delamination of two-dimensional materials is a requisite step for exploiting their unique properties. Herein, we report on the formation of stable colloidal solutions of Ti3C2 and Mo2Ti2C3 MXene nanosheets by the dispersion and electrostatic exfoliation of stacked multilayer MXenes in the presence of albumin. Delamination of multilayered MXenes int...
Article
Full-text available
The COVID-19 pandemic has become a major worldwide crisis. Although respiratory symptoms are a key feature of the disease, many people who are hospitalized with COVID-19 also suffer acute kidney injury, a condition that exacerbates patient mortality and may have to be treated through renal replacement therapy. Much of the focus on hospital capacity...
Article
Two-dimensional transition metal carbides and/or nitrides (MXenes) have shown promise in developing electrochemical storage of metal ions within conductive galleries due to redox reactions with transition metal atoms. Here, effect...
Article
MXenes have shown outstanding properties due to their highly active hydrophilic surfaces coupled with high metallic conductivity. Many applications rely on the intercalation between Ti3C2Tx (Tx describes the surface termination) flakes by ions or molecules, which in turn might alter the Ti3C2Tx surface chemistry and electrochemical properties. In t...
Article
Full-text available
Two-dimensional (2D) transition metal carbides and nitrides (MXenes) have attracted significant attention due to their electronic, electrochemical, chemical, and optical properties. However, understanding of their thermal stability is still lacking. To date, MXenes are synthesized via top-down wet chemical etching, which intrinsically results in su...
Article
MXenes - two-dimensional (2D) transition metal carbides and nitrides - are an emerging class of high rate pseudocapacitive materials due to their combination of fast surface redox reactions with metallic conductivity. The ability of MXenes to spontaneously intercalate aqueous cations, broadens the scope for developing metal-ion capacitors beyond th...
Article
Full-text available
The wearable artificial kidney can deliver continuous ambulatory dialysis for more than 3 million patients with end-stage renal disease. However, the efficient removal of urea is a key challenge in miniaturizing the device and making it light and small enough for practical use. Here, we show that two-dimensional titanium carbide (MXene) with the co...
Cover Page
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The cover art depicts the “cytokine storm” associated with severe sepsis or other diseases that result in over-activation of the inflammatory response of the organism and release of pro-inflammatory cytokines into the bloodstream. The blood plasma perfuses a filter composed with biocompatible granulated graphene nanoplatelets. This kind of graphiti...
Conference Paper
Full-text available
The family of two-dimensional (2D) transition metal carbides and nitrides, MXenes, has been expanding rapidly since the discovery of Ti3C2MXene in2011 [1]. More than 20 different MXenes have been synthesized, and the structure and properties of numerous other MXenes have been predicted using density functional theory calculations [2]. Two-dimension...
Article
Full-text available
There is a range of medical conditions, which include acute organ failure, bacterial and viral infection and sepsis, that result in over-activation of the inflammatory response of the organism and release of pro-inflammatory cytokines into the bloodstream. A fast removal of these cytokines from blood circulation could offer a potentially efficient...
Article
Full-text available
The protein adsorption plays a very important role in biotechnology, biomolecular engineering and it is one of the main factors determining bio- and hemocompatibility of biomedical materials in medical applications, such as blood purification and wound healing. Here we report adsorption properties of two carbon-based materials, thermally expanded g...
Presentation
Full-text available
2017 E-MRS, Strasbourg (France)
Article
Wood-based activated carbons, as received and modified by introduction of nitrogen and/or oxidation, were studied as CO2 electrochemical reduction reaction (CO2ERR) catalysts. The carbons have similar pore structures but they differ significantly in surface chemistry. An electrochemical reduction process applied to the surface before CO2 reduction...
Article
A new kind of polyHIPEs (polymerized High Internal Phase Emulsions) based carbon derived from co-reacted furfuryl alcohol and tannin was tested as an ORR catalyst. To understand the reduction process, their surface was extensively characterized from the point of view of texture and chemistry. The prepared materials show subtle differences in the ch...
Article
Photosensitive carbonaceous materials were synthesized at 550 °C from the mixture of g-C3N4 and sulfur containing polymer. The extensive characterization of their surface using adsorption of nitrogen, potentiometric titration, TA/MS, XPS, FTIR, SEM and HR-TEM showed that they are porous and their surface is decorated with various functional groups....
Article
Wood-based commercial activated carbon (BAX) and its oxidized counterpart (BAX-O) were treated with melamine and then heated at 450 °C in nitrogen. Further oxidation with nitric acid was also applied. The carbons were tested for ammonia sensing (45−500 ppm of NH 3). Even though all samples exhibit p-type conduction, their exposure to NH 3 led to di...
Article
Full-text available
A composite of g-C3 N4 with visible-light photoactive S-doped carbon was synthesized. Synergistic effects in surface chemistry and electrical conductivity, and a decrease in the band gap (Eg , estimated from optical measurements) from 2.91 eV for g-C3 N4 to 2.79 eV for the composite were found. Both the carbon and the composite showed photosensitiv...
Article
Phenolic-formaldehyde resins aged at 85, 90 and 95°C were used as ammonia adsorbents at dynamic conditions in dry and moist air. To avoid pressure drops 10% bentonite was added as a binder. The initial and hybrid materials (before and after ammonia adsorption) were extensively characterized from the point of view of their porosity and surface chemi...
Article
Full-text available
This work provides new insights in the field of applied photochemistry based on semiconductor-free nanoporous carbons and its application to sunlight energy harvesting. Using carbon materials of increasing average pore size, chemical functionalization to introduce a variety of O- and S-containing functional groups and monochromatic light, we have s...
Article
Graphitic carbon nitride, GCN, was oxidized using the Hummers method. The materials were extensively characterized. The results showed the marked changes in morphology. Even though the layered structure was still present in the oxidized sample, spherical nanoparticles with size 5-50 nm consist of the bulk of the material. This results in the develo...
Article
S-doped and dual S,N-doped polymer-derived carbons were studied as electrocatalysts for the reduction of CO2 . Higher Faradaic efficiencies for conversion to CO and CH4 were obtained for S,N-doped carbon than its S-doped counterpart. The former showed a maximum Faradaic efficiency of 11.3 % for CO and 0.18 % for CH4 formation. The S,N-nanoporous ca...
Article
Composites of carbon aerogel and graphite oxide (GO) were synthesized using a self-assembly method based on dispersive forces. Its surface was modified by treatment in hydrogen sulfide at 650 and 800 °C. The samples obtained were characterized by adsorption of nitrogen, TA-MS, XPS, potentiometric titration, and HRTEM and tested as catalysts for oxy...
Article
Full-text available
Ultrafast energy decay kinetics of a zinc (hydr)oxide-graphite oxide (GO) composite is studied via time-resolved fluorescence spectroscopy. The time-resolved emission is spectrally decomposed into emission regions originating from the zinc (hydr)oxide optical gap, surface, and defect states of the composite material. The radiative lifetime of deep...
Article
Adsorption of CO2 at temperatures close to ambient and up to 1.5 MPa was measured on nanoporous polymer-derived carbon, on its composite with reduced graphene oxide (rGO), and on their air oxidized counterparts. The isotherms were fitted by the LBET class models and the adsorption mechanisms were described in terms of parameters derived from the me...
Article
Synthetic activated carbon containing iron and sulfur heteroatoms, obtained from polystyrene sulfonic acid-based organic salt, and commercial wood-based carbon containing phosphorous were tested as catalysts for oxygen reduction reactions. The carbons were characterized using adsorption of nitrogen, TA-MS, FTIR, XRD, XPS, potentiometric titration,...
Article
Full-text available
A sensor response parameters of the ammonia sensors which are prepared by using composite of graphene oxide and poly(4-styrenesulfonic acid-co-maleic acid) sodium salt derived carbon are presented. Using the self-designed interdigitated electrode on the experimental setup, we were able to determine the capacity for gas sensing as a sensor response...
Article
Resorcinol-formaldehyde-based carbon aerogels were modified by treatment with H2S at 650 and 800 °C and used as catalysts for the oxygen reduction reaction (ORR) in an alkaline medium. On the material treated at high temperature, the electron transfer number was close to 4 e− and the onset potential for the ORR was shifted to a more positive value....
Article
Composites of mesoporous synthetic carbon and the graphene phase were synthesized in aqueous suspension by employing dispersive interactions of both phases. The resulting carbon-based materials were further heat treated in air at 350 °C. The composites and their components were characterized by using adsorption of nitrogen, potentiometric titration...
Article
Full-text available
Nitrogen-rich carbons synthesized from two melamine-based precursors – a melamine resin (MR) and a melamine network (MN) – were compared based on their pore structure, surface chemistry and electrochemical performance. The effect of carbonization temperatures on carbon pore structure and surface chemistry was investigated by N2 and CO2 sorption ana...
Article
Full-text available
Ammonia sensing capability of a commercial wood-based activated carbon (BAX) and its oxidized counterpart (BAX-O) was studied. The materials were exposed to continuous cycles of various ammonia concentrations, followed by purging with air, and changes in normalized resistance were analyzed. When initially exposed to the reducing gas, chemical inter...
Article
Full-text available
A new hybrid catalyst containing crystalline copper-based phases, CuxSy, CuO, Cu4(OH)6SO4 and S-doped nanoporous polymer-derived carbon was obtained by carbonization of the physical mixture of Cu-BTC (MOF)/graphite oxide composites with a commodity polymer (Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt). The resulting highly porous compos...
Article
Full-text available
The effects of fabrication temperature are investigated on the performance of CdSe quantum dot (QD)-sensitized hybrid solar cells of the composite material of zinc (hydr)oxide (ZnOH-GO)with 2 wt. % graphite oxide. The current-voltage (I-V) and photo-current measurements show that higher fabrication temperatures yield greater photovoltaic power conv...
Article
Nanoporous carbons with graphitic domains were synthesized from a polymer containing sulfur and nitrogen. The materials were characterized using adsorption of nitrogen, potentiometric titration TA/MS, XPS, TEM and XRD. Then they were tested as supercapacitors in three-electrode cell and under visible light irradiation after extensive wetting either...
Article
A nanoporous carbon was prepared from sulfonic acid based water soluble polymer. Its direct one step carbonization followed by air oxidation led to a porous material whose surface was rich in N-, O- and S-containing groups. TEM images showed the presence of 10 nm graphitic domains in the carbon matrix. When the carbon was used as a photoanode under...
Article
A new hybrid Cu/rGO catalyst obtained by a thermal treatment of the composite of a copper-based MOF with graphite oxide exhibited a marked catalytic activity for oxygen reduction reaction (ORR) in an alkaline medium, high tolerance to methanol oxidation and superior long-term stability over 20 hours. The unique architecture of the copper atoms in t...
Article
Nanoporous S-doped carbon and its composites with graphite oxide were tested as adsorbents of CO2 (1 MPa at 0 °C) after degassing either at 120 °C or 350 °C. The adsorption capacities were over 4 mmol/g at ambient pressure and 8 mmol/g at 0.9 MPa in spite of a low volume of micropores. The nitrogen adsorption experiments showed an increase in poros...
Article
This minireview summarizes our recent findings on the photoactivity of S-doped nanoporous carbons. The materials were either synthesized from the sulfur-containing polymers or obtained by heat treatment of commercial carbon with hydrogen sulfide. Their surface was extensively characterized from the points of view of its surface chemistry, porosity,...
Article
Nanoporous sulfur-doped carbon and its composite with 2 wt.% graphene phase were used as separation media for the removal of dibenzothiophenes from model diesel fuel and tested as photocatalysts for their oxidation. The samples with preadsorbed compounds were exposed to visible light or UV to evaluate the effects of irradiation on the stability of...
Article
A high-density and low-surface-area sulfur-doped carbon material is tested as a supercapacitor in acidic and neutral media. The electrolytes that are used are either oxygenated or are exposed to atmospheric oxygen. The electrochemical capacitance is measured both in dark conditions and under simulated solar irradiation. The capacitance values are c...
Article
CO2 adsorption on Cu–BTC and its composites with graphite oxide or aminated graphite oxide was evaluated at 273 K and 295 K under the pressure up to ∼0.1 MPa. The samples before and after CO2 adsorption were characterized using X-ray diffraction, FT-IR spectroscopy and thermal analysis. The isosteric heats of adsorption were calculated from the exp...
Patent
Full-text available
Compositions and methods useful for removing toxic industrial compounds from air are disclosed, wherein said composition comprises a mixture of hydrous metal oxide and graphite oxide. In a most preferred embodiment the composition comprises a mixture of zirconium hydroxide and graphene oxide.
Article
Quantum efficiencies (QEs) of innovative hybrid solar cells fabricated using micro/mesoporous zinc (hydr)oxide and its graphite-based composites sensitized by semiconductor quantum dots (SQDs) are reported. High absorption coefficient of CdSe SQDs and the wide band gap of zinc (hydr)oxide and its composites with graphite oxide (GO) are essential to...
Article
Mixtures of sewage sludge and fish waste of various compositions were prepared and pyrolyzed at 950 degrees C in an inert atmosphere. On the pyrolyzed samples an activation with CO2 was carried out at 850 degrees C. The materials were used as H2S adsorbents at ambient conditions. Initial and spent samples were characterized using thermal analysis,...
Article
Reduced GO in confined space of silica gel nanopores doped with sulfur shows high catalytic activity for oxygen reduction reaction (ORR) in alkaline medium and exhibits a superior tolerance to the presence of methanol. Even though the partially reduced GO with hydroquinone structures is a good catalysts for ORR, it shows instability in KOH. The goo...
Article
The composites of nanoporous carbon and graphene were prepared by carbonization of mixed sulfonate-based polymers and graphite oxide. Addition of the graphene phase modified the texture and chemistry of the final products. The materials show high electrochemical capacity in spite of the relatively low surface area. The good performance is linked to...
Article
The determination of an atomistic graphene oxide (GO) model has been challenging due to the structural dependence on different synthesis methods. In this work we combine temperature-programmed molecular dynamics simulation techniques and the ReaxFF reactive force field to generate realistic atomistic GO structures. By grafting a mixture of epoxy an...
Conference Paper
New photovoltaic solar cells based on micro/meso porous Zinc(hydr)oxide with 2% graphite oxide (ZnGO-2) and TiO2 s sensitized by quantum dot and ICG dye are reported. The efficiency of energy conversion has reached up to ~ 6.84%.
Article
Commercial wood-based activated carbon was treated with hydrogen sulfide at 650 and 800 degrees C to introduce sulfur to the carbon matrix. On the initial and S-doped samples adsorption of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) from model diesel fuel with equal molar concentrations of these species was measured at room temp...
Article
Composites of polymer (styrene-sulfonate sodium salt) derived carbon with highly oxidized graphite oxide were synthesized and tested as supercapacitors. The materials were characterized using adsorption of nitrogen, SEM/EDX, elemental analysis, thermal analysis-mass spectroscopy and potentiometric titration. The electrochemical performance was eval...
Article
The band gap energies of micro/meso-porous zinc (hydr)oxide and its composites with 2 wt. % and 5 wt. % graphite oxides are reported using three optical characterization techniques. The obtained energy gaps (from 2.84 eV to 2.95 eV) of the composites are smaller than that for zinc oxide (∼3.2 eV) and zinc (hydr)oxide (∼3.06 eV). The band gap narrow...
Article
Time-resolved photoluminescence is used to determine carrier recombination through radiative and nonradiative processes in zinc hydroxide Zn(OH)<sub>2</sub> and its porous composites with graphite oxide (GO). The decay times, measured by a streak camera, are found to be larger for zinc hydroxide (∼1215±156 ps) than its composites (∼976±81 ps for Zn...
Article
New composites of a copper-based metal–organic framework and graphite oxide modified by urea (GO-U) were synthesized. The materials and the parent composite components were characterized using X-ray diffraction, FT-IR spectroscopy, potentiometric titration, sorption of nitrogen, thermal analysis, elemental analysis, Raman spectroscopy, UV-Vis spect...
Article
Composites of commercial graphene and polymer-derived nanoporous carbons were activated with KOH and CO2 to increase the porosity. The materials are characterized using the adsorption of nitrogen, SEM/EDX, and potentiometric titration. Their electrochemical performance was measured in two and three electrode cells in H2SO4 as an electrolyte. Activa...
Article
Polymer-derived sulfur and phosphorus doped activated carbon and commercial phosphoric acid activated carbon were used as adsorbents of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) from model diesel fuel (MDF). The experiments were carried out in dark, and under visible light and UV irradiations. Extraction of the products of sur...
Article
Graphite oxide was thermally reduced within the confined space of commercial silica gel, and then the matrix was removed. The modified graphite oxide was treated with hydrogen sulfide at 800 °C. The treatment applied results in a specific porous texture and high hydrophobicity of the surface. 3 at.% sulfur was introduced, mainly as thiophenic group...
Article
New composites Cu-BTC MOF and graphite oxide modified with urea (GO-U) were developed and tested as CO2 adsorbents at room temperature. The composite containing GO-U with the highest nitrogen content exhibits an excellent CO2 uptake (4.23 mmol/g) at dynamic conditions. The incorporation of GO-U into MOF changes the chemistry and microstructure of t...
Article
Composites of zinc (hydr)oxide–graphite oxide and of zinc (hydr)oxide–graphene were used as adsorbents of sulfur dioxide at ambient conditions. The initial and exhausted samples were characterized by XRD, FTIR, potentiometric titration, EDX, thermal analysis and adsorption of nitrogen. Cyclic voltammetry in light and dark was also used to show the...
Article
Adsorption of ammonia was studied on composites of graphene and nanoporous carbon (5 and 20 wt.% graphene). The breakthrough curves were measured in three consequent adsorption–desorption runs in either dry or wet conditions. The mechanism of ammonia retention was evaluated from the point of view of either reactive or physical adsorption. The impor...
Article
Composites of zinc (hydr)oxide and graphite oxide (GO) with 2, 5, and 20 wt.% of the GO component were obtained by precipitating zinc hydroxide from zinc chloride with dispersed GO present in the solution. The materials were evaluated as adsorbents of hydrogen sulfide at ambient conditions. The surface properties of the initial and exhausted sample...
Article
The optical properties of zinc (hydr)oxide and the composites of zinc (hydr)oxide with 2% and 5% graphite oxide were investigated by three spectroscopic techniques: absorption, fluorescence and photocurrent techniques. The obtained energy gaps (from 2.85 eV to 2.95 eV) of the composites were smaller than that for zinc oxide (~3.2 eV) and zinc (hydr...
Article
Full-text available
The optical properties of zinc (hydr)oxide and its porous composites with 2% and 5% graphite oxide (GO), thus 13 forming ZnGO-2 and ZnGO-5, are investigated using reflectance spectroscopy and two-photon fluorescence (TPF) 14 imaging. The bandgap energies for the Zn(OH)2, ZnGO-2, and ZnGO-5 samples are determined to be in the range 15 between 2.88 a...
Article
Composites of commercial graphene and nanoporous sodium-salt-polymer-derived carbons were prepared with 5 or 20 weight% graphene. The materials were characterized using the adsorption of nitrogen, SEM/EDX, thermal analysis, Raman spectroscopy and potentiometric titration. The samples' conductivity was also measured. The performance of the carbon co...
Article
Full-text available
A novel sewage-sludge derived composite material was developed for the adsorptive removal of organic pollutants from water. In this study a batch adsorption study was carried out to examine the kinetics of antibiotics adsorption by this composite material. A pseudo-second order kinetics model fits the data extremely well, suggesting that chemical a...
Article
Photoactivity of S-doped nanoporous carbons was tested using photocurrent generation, cyclic voltammetry and photodegradation of methylene blue (MB) under artificial solar irradiation. The results were compared to those obtained on unmodified carbons and on commercial TiO2. A significant generation of photocurrent at visible and NIR radiation from...
Article
Manganese oxide/graphite oxide (GO) composites containing GO of two different oxidation levels are investigated as supercapacitors in neutral electrolytes, Na2SO4 and Li2SO4. Addition of only 10 wt% of GO with a low oxidation level results in an 18 times improvement in the capacitance in lithium sulfate and in a 60 times improvement of the capacita...
Article
Composites of reduced graphite oxide and nanoporous sodium-salt-polymer-derived carbons were prepared with 5 or 20 weight% graphite oxide. The materials were characterized using the adsorption of nitrogen, SEM/EDX, elemental analysis and potentiometric titration. DC conductivity was also measured. The performance of the carbon composites in energy...
Presentation
A novel composite material was developed by the pyrolysis of a mixture of sewage sludge and waste oil sludge. The adsorption of a mixture of 11 antibiotics (amoxycillin, chloramphenicol, chlorotetracyclinie, enrofloxacin, ofloxacin, sulfadiazine, sulfamethazine, sulfamethoxazole, erythromycin, Penicillin-G, and oxytetracycline) and 2 anticonvulsant...
Article
The aim of this study was to modify a synthetic clay with MgO and a non-ionic surfactant (Igepal CA-720), impregnated with Cu or Fe to evaluate the H2S removal. The Cu and Fe content was: 1.0; 8.0 and 15wt.%, bimetallic Cu-Fe solids were also prepared. The obtained materials were characterized by N2 adsorption, X-ray diffraction (XRD), X-ray fluore...
Article
Composites of copper (hydr)oxychlorides with graphite oxide or graphene were synthesized and used as adsorbents of hydrogen sulfide at dynamic conditions at ambient temperatures. The materials were extensively characterized before and after adsorption in order to link their performance to the surface features. X-ray diffraction, FTIR, thermal analy...
Article
Sewage sludge- and waste oil sludge-derived materials were tested as adsorbents of pharmaceuticals from diluted water solutions. Simultaneous retention of eleven antibiotics plus two anticonvulsants was examined via batch adsorption experiments. Virgin and exhausted adsorbents were examined via thermal and FTIR analyses to elucidate adsorption mech...