Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568606
V. Ivashchenko, A. Onoprienko, P. Scrynskyy, Andriy Kozak, E. Olifan, A. Kovalchenko, A. Sinelnitchenko, Alexander Marchuk, V. Granko
The films of the Ti-Nb-C system were deposited by direct current (DC) magnetron co-sputtering of elemental Ti, Nb, composite Ti+Nb, and graphite (C) targets. The microstructure, chemical bonds and mechanical properties of films were comparatively investigated. The X-ray diffraction (XRD) analysis revealed the presence of TiC and NbC crystallites in films deposited by co-sputtering of Ti/C and Nb/C targets. The peaks of the XRD spectra of the film obtained by co-spattering of the composite Ti+Nb and C targets are located in intermediate region between the corresponding peaks of the Ti-C and Nb-C films. The X-ray photoelectron spectroscopy (XPS) showed that the Ti-C and Nb-C bonds prevail in the deposited Ti-Nb-C films. It was suggested that the Ti-Nb-C films are nanocomposite and consist of the crystallites of the cubic TiC, NbC and TiC-NbC solid solutions surrounded by amorphous carbon-based matrix. The Knoop hardness of the Ti-Nb-C film is highest and reaches 36.8 GPa. The average friction coefficient determined before film delamination was lowest (0.17) in Ti-Nb-C film.
{"title":"Deposition and Characterization of Ti-Nb-C Films by DC Magnetron Sputtering","authors":"V. Ivashchenko, A. Onoprienko, P. Scrynskyy, Andriy Kozak, E. Olifan, A. Kovalchenko, A. Sinelnitchenko, Alexander Marchuk, V. Granko","doi":"10.1109/NAP51885.2021.9568606","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568606","url":null,"abstract":"The films of the Ti-Nb-C system were deposited by direct current (DC) magnetron co-sputtering of elemental Ti, Nb, composite Ti+Nb, and graphite (C) targets. The microstructure, chemical bonds and mechanical properties of films were comparatively investigated. The X-ray diffraction (XRD) analysis revealed the presence of TiC and NbC crystallites in films deposited by co-sputtering of Ti/C and Nb/C targets. The peaks of the XRD spectra of the film obtained by co-spattering of the composite Ti+Nb and C targets are located in intermediate region between the corresponding peaks of the Ti-C and Nb-C films. The X-ray photoelectron spectroscopy (XPS) showed that the Ti-C and Nb-C bonds prevail in the deposited Ti-Nb-C films. It was suggested that the Ti-Nb-C films are nanocomposite and consist of the crystallites of the cubic TiC, NbC and TiC-NbC solid solutions surrounded by amorphous carbon-based matrix. The Knoop hardness of the Ti-Nb-C film is highest and reaches 36.8 GPa. The average friction coefficient determined before film delamination was lowest (0.17) in Ti-Nb-C film.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"138 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75971525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568397
Yu.V. Bondar, S. Kuzenko, Yu. A. Olkhovyk
Novel nanocomposite adsorbent based on manganese dioxide-loaded polyacylonitrile propylene fibers was synthesized for selective removal of strontium ions from contaminated waters by in situ formation of manganese dioxide with layered structure (birnessite) nanoparticles on the fibers surface. Data of scanning electron microscopy and X-ray diffraction confirmed the formation of birnessite homogeneous layer on the fibers surface, which consisted of rounded nanoparticles (50 to 70 nm). The efficiency of the synthesized adsorbent for removal of strontium ions was studied under various experimental conditions. It has demonstrated a rapid adsorption process, high adsorption efficiency over a wide pH range, and selectivity in Sr ions removal from model solutions with high salt content.
{"title":"Fabrication of Nanocomposite Adsorbent Based on MnO2-loaded Polymer Fibers for Strontium Ions","authors":"Yu.V. Bondar, S. Kuzenko, Yu. A. Olkhovyk","doi":"10.1109/NAP51885.2021.9568397","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568397","url":null,"abstract":"Novel nanocomposite adsorbent based on manganese dioxide-loaded polyacylonitrile propylene fibers was synthesized for selective removal of strontium ions from contaminated waters by in situ formation of manganese dioxide with layered structure (birnessite) nanoparticles on the fibers surface. Data of scanning electron microscopy and X-ray diffraction confirmed the formation of birnessite homogeneous layer on the fibers surface, which consisted of rounded nanoparticles (50 to 70 nm). The efficiency of the synthesized adsorbent for removal of strontium ions was studied under various experimental conditions. It has demonstrated a rapid adsorption process, high adsorption efficiency over a wide pH range, and selectivity in Sr ions removal from model solutions with high salt content.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"23 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80057434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568593
S. Dudin, S. Yakovin, A. Zykov, N. Yefymenko, Oleksandr Dakhov
Hard coating deposition on plastics by magnetron sputtering encounters the common problem of the coating delamination if its thickness is more than 50-100 nm. The present study researches Tantalum-based coating deposition focusing on the optimal deposition regimes allowing thicker coating deposition on Polypropylene substrates without delamination. It is shown that the main reason for the delamination is compressive stress in the coating appearing due to bombardment by energetic particles. The delamination problem solution has been found in decreasing the bombarding particle energy by increasing gas pressure.
{"title":"Challenges of Coating Deposition on Polymer Substrate by Magnetron Sputtering","authors":"S. Dudin, S. Yakovin, A. Zykov, N. Yefymenko, Oleksandr Dakhov","doi":"10.1109/NAP51885.2021.9568593","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568593","url":null,"abstract":"Hard coating deposition on plastics by magnetron sputtering encounters the common problem of the coating delamination if its thickness is more than 50-100 nm. The present study researches Tantalum-based coating deposition focusing on the optimal deposition regimes allowing thicker coating deposition on Polypropylene substrates without delamination. It is shown that the main reason for the delamination is compressive stress in the coating appearing due to bombardment by energetic particles. The delamination problem solution has been found in decreasing the bombarding particle energy by increasing gas pressure.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"30 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90820953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568594
A. Shumskaya, V. Dobysh, A. Petkevich, O. Musskaya, V. Krut’ko, A. Kulak, Aleksey Mikhalko
Thermoplastic polymer composites have been obtained by stretching a polylactide (PLA) melt containing 1–10% amorphized hydroxyapatite (HA). The physicochemical properties of the obtained composites have been studied by XRD, thermal analysis, and microscopy. It is shown that PLA/HA composites are well extruded through nozzles with a diameter of 0.4 mm, retain their shape during 3D printing by the FDM method, and can be used to create three-dimensional porous biomaterials.
{"title":"Thermoplastic Composites Based on Polylactide and Calcium Phosphates","authors":"A. Shumskaya, V. Dobysh, A. Petkevich, O. Musskaya, V. Krut’ko, A. Kulak, Aleksey Mikhalko","doi":"10.1109/NAP51885.2021.9568594","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568594","url":null,"abstract":"Thermoplastic polymer composites have been obtained by stretching a polylactide (PLA) melt containing 1–10% amorphized hydroxyapatite (HA). The physicochemical properties of the obtained composites have been studied by XRD, thermal analysis, and microscopy. It is shown that PLA/HA composites are well extruded through nozzles with a diameter of 0.4 mm, retain their shape during 3D printing by the FDM method, and can be used to create three-dimensional porous biomaterials.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"46 29 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91121314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568568
O. Kuntyi, O. Dobrovetska, S. Korniy
Co-deposition of Au and Pt on glassy carbon (GC) from H[AuCl4] and PtCl2 solutions was studied in DMSO using pulse electrolysis. Nanoparticles of AuPt on GC from H[AuCl4] + PtCl2 + Bu4NClO4 solutions at E=-0.6$ldots$-1.4V were deposited. The priority deposition of Au with its predominant content in the obtained binary system was established. It is shown that the main factor affecting the content of components in it is the concentration of precursors of co-deposited metals. The main factors influencing the size of AuPtNPs are the value of the cathode potential (Ecathode), the concentration ratio [HAuCl4]:[PtCl2] and the electrodeposition time. With the increase of Ecathode from -0.6 to -1.4V, the average nanoparticle size decreases from ∼200 to ∼60nm. The increase in the [HAuCl4]:[PtCl2] ratio provides the reduction of AuPtNPs size, while the increase in electrodeposition time increases the size.
{"title":"Deposition of a Nanostructured Au-Pt Binary System by Pulse Electrolysis in DMSO Medium","authors":"O. Kuntyi, O. Dobrovetska, S. Korniy","doi":"10.1109/NAP51885.2021.9568568","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568568","url":null,"abstract":"Co-deposition of Au and Pt on glassy carbon (GC) from H[AuCl<inf>4</inf>] and PtCl<inf>2</inf> solutions was studied in DMSO using pulse electrolysis. Nanoparticles of AuPt on GC from H[AuCl<inf>4</inf>] + PtCl<inf>2</inf> + Bu4NClO<inf>4</inf> solutions at E=-0.6$ldots$-1.4V were deposited. The priority deposition of Au with its predominant content in the obtained binary system was established. It is shown that the main factor affecting the content of components in it is the concentration of precursors of co-deposited metals. The main factors influencing the size of AuPtNPs are the value of the cathode potential (E<inf>cathode</inf>), the concentration ratio [HAuCl<inf>4</inf>]:[PtCl<inf>2</inf>] and the electrodeposition time. With the increase of E<inf>cathode</inf> from -0.6 to -1.4V, the average nanoparticle size decreases from ∼200 to ∼60nm. The increase in the [HAuCl<inf>4</inf>]:[PtCl<inf>2</inf>] ratio provides the reduction of AuPtNPs size, while the increase in electrodeposition time increases the size.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"169 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91177994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568534
O. Balaban, N. Mitina, A. Zaichenko, O. Izhyk, B. Venhryn, A. Andrushchak
This work develops a new approach to the synthesis of nanocomposites and their study as effective materials for lithium current sources. This paper proposes a unique method that allows obtaining stable composite materials in which nanosized MoS2 particles are fixed in the pores of SiO2. To obtain nanocomposites with preset morphological characteristics, the method of hydrothermal synthesis is used, followed by modification of the surface of nanoparticles with functional polymers via polymerization initiated from the particle surface. TEM, impedance spectroscopy, and computer simulation of an equivalent electrical schema are used to characterize such materials before and after grafting a functional polymer shell onto their surface. The prospects of using synthesized composites as cathode materials of lithium current sources, as well as the possibility of controlling the structure and size of the inorganic nucleus and a functional polymer shell, are proved. The kinetics and thermodynamics of Li+-intercalation current generation are studied.
{"title":"Promising Cathode Material Based on Inorganic Nanocomposites for Li+-intercalation Current Generation","authors":"O. Balaban, N. Mitina, A. Zaichenko, O. Izhyk, B. Venhryn, A. Andrushchak","doi":"10.1109/NAP51885.2021.9568534","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568534","url":null,"abstract":"This work develops a new approach to the synthesis of nanocomposites and their study as effective materials for lithium current sources. This paper proposes a unique method that allows obtaining stable composite materials in which nanosized MoS2 particles are fixed in the pores of SiO2. To obtain nanocomposites with preset morphological characteristics, the method of hydrothermal synthesis is used, followed by modification of the surface of nanoparticles with functional polymers via polymerization initiated from the particle surface. TEM, impedance spectroscopy, and computer simulation of an equivalent electrical schema are used to characterize such materials before and after grafting a functional polymer shell onto their surface. The prospects of using synthesized composites as cathode materials of lithium current sources, as well as the possibility of controlling the structure and size of the inorganic nucleus and a functional polymer shell, are proved. The kinetics and thermodynamics of Li+-intercalation current generation are studied.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"73 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83943537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568612
T. Błachowicz, P. Steblinski, J. Grzybowski, A. Ehrmann
Magnetic nanofibers are of great interest for applications like data transport and storage as well as in basic research. Especially bent nanofibers, which can unambiguously be produced by electrospinning, show a broad spectrum of possible magnetization reversal processes, depending on bending radius, geometry, magnetic field orientation, etc. Besides these quasistatic processes, dynamic investigations are necessary for investigating data transport properties of magnetic nanofibers. We report on domain wall transport through coupled bent nanowires, forming networks with multiple data inputs and outputs. Our results show diverse phenomena which have to be taken into account during these dynamic processes, such as domain wall instabilities or interference between converging signals, and suggest possible architectures of nanowire-based logics.
{"title":"Magnetization Dynamics in Nanofiber Networks","authors":"T. Błachowicz, P. Steblinski, J. Grzybowski, A. Ehrmann","doi":"10.1109/NAP51885.2021.9568612","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568612","url":null,"abstract":"Magnetic nanofibers are of great interest for applications like data transport and storage as well as in basic research. Especially bent nanofibers, which can unambiguously be produced by electrospinning, show a broad spectrum of possible magnetization reversal processes, depending on bending radius, geometry, magnetic field orientation, etc. Besides these quasistatic processes, dynamic investigations are necessary for investigating data transport properties of magnetic nanofibers. We report on domain wall transport through coupled bent nanowires, forming networks with multiple data inputs and outputs. Our results show diverse phenomena which have to be taken into account during these dynamic processes, such as domain wall instabilities or interference between converging signals, and suggest possible architectures of nanowire-based logics.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"14 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81058522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568533
Tetyana Tsymbaliuk, B. Naidych, O. Kostyuk, Ya. Yavorskyi, L. Nykyruy, R. Yavorskyi, O. Chernikova, G. Wisz, L. Glowa
The analysis of the surface morphology of Pb0.9Cd0.1Te:Pb (3 at.%) thin films obtained by the open evaporation in vacuum from pre-synthesized substances are performed. The quantitative composition and sizes of grains on the surface were analyzed. The films have a homogeneous composition and granular structure with individual grain sizes of several tens of micrometers. The introduction of Cadmium into the base matrix PbTe is the cause of the formation of defects such as grain boundaries due to the differ between crystal structure of CdTe and PbTe.
{"title":"Surface Morphology and Growth Mechanisms of Pb-Cd-Te Thin Films","authors":"Tetyana Tsymbaliuk, B. Naidych, O. Kostyuk, Ya. Yavorskyi, L. Nykyruy, R. Yavorskyi, O. Chernikova, G. Wisz, L. Glowa","doi":"10.1109/NAP51885.2021.9568533","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568533","url":null,"abstract":"The analysis of the surface morphology of Pb0.9Cd0.1Te:Pb (3 at.%) thin films obtained by the open evaporation in vacuum from pre-synthesized substances are performed. The quantitative composition and sizes of grains on the surface were analyzed. The films have a homogeneous composition and granular structure with individual grain sizes of several tens of micrometers. The introduction of Cadmium into the base matrix PbTe is the cause of the formation of defects such as grain boundaries due to the differ between crystal structure of CdTe and PbTe.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"20 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82662234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568504
I. Ivanenko, K. Hutsul, Yurii Fedenko
The most progressive and promising way to increase the photocatalytic activity of Titanium (IV) oxide is the creation of its composites with other semiconductors. In the presented article, TiO2-ZnO nanocomposite was synthesized by zinc (II) oxide nanoparticles deposition on the surface of the Evonik AEROXIDE® TiO2 P25 industrial photocatalyst. The phase composition, nanoparticles size, and optical band gap of the synthesized nanocomposite were determined. Lattice constants and Crystallites size were calculated. TiO2-ZnO nanocomposite showed extraordinarily high photocatalytic activity toward the anionic dye of Congo red and less activity toward methyl blue and methyl green cationic dyes. This difference in the properties of the nanocomposite was explained by the high content of weakly basic Bronsted surface centers, which were hydroxyl groups attached to the edge regions of the photocatalyst surface, as well as directly to ZnO and TiO2 nanoparticles.
{"title":"Nanocomposite TiO2-ZnO for Dyes Photocatalytic Degradation","authors":"I. Ivanenko, K. Hutsul, Yurii Fedenko","doi":"10.1109/NAP51885.2021.9568504","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568504","url":null,"abstract":"The most progressive and promising way to increase the photocatalytic activity of Titanium (IV) oxide is the creation of its composites with other semiconductors. In the presented article, TiO2-ZnO nanocomposite was synthesized by zinc (II) oxide nanoparticles deposition on the surface of the Evonik AEROXIDE® TiO2 P25 industrial photocatalyst. The phase composition, nanoparticles size, and optical band gap of the synthesized nanocomposite were determined. Lattice constants and Crystallites size were calculated. TiO2-ZnO nanocomposite showed extraordinarily high photocatalytic activity toward the anionic dye of Congo red and less activity toward methyl blue and methyl green cationic dyes. This difference in the properties of the nanocomposite was explained by the high content of weakly basic Bronsted surface centers, which were hydroxyl groups attached to the edge regions of the photocatalyst surface, as well as directly to ZnO and TiO2 nanoparticles.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"17 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82786313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-05DOI: 10.1109/NAP51885.2021.9568617
A. Kytsya, V. Berezovets, Yu. V. Verbovytskyy, L. Bazylyak, I. Zavaliy, V. Yartys
Zeolite supported nanostructured Ni and Co catalysts were synthesized at ambient conditions by cation-exchange reaction followed by a reduction of the adsorbed ions by NaBH4. Using UV-vis spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy it was concluded that obtained products contained up to 3 wt. % of metal catalysts while the formed metallic nanoparticles were evenly distributed at the surface of the zeolite granules. Kinetics of hydrolysis of NaBH4 in presence of Ni and Co based catalysts has been characterized and related to the rate of hydrogen generation. Using both amorphous and zeolite supported Ni and Co nanocatalysts leads to a stable generation of hydrogen in wide range of NaBH4 concentrations and results in high extent of its conversion. Both amorphous and zeolite supported Ni and Co allow achieving a fast kinetics of hydrogen evolution, even though synthesized “in situ” amorphous Ni and Co showed a performance which was 25 % superior as compared to the catalysts deposited on zeolite. In combination with the high stability of the obtained nanocatalysts this suggests a potential of their application in the systems for hydrogen generation.
{"title":"Zeolite Supported Ni and Co Catalysts for Hydrogen Generation via Hydrolysis of NaBH4","authors":"A. Kytsya, V. Berezovets, Yu. V. Verbovytskyy, L. Bazylyak, I. Zavaliy, V. Yartys","doi":"10.1109/NAP51885.2021.9568617","DOIUrl":"https://doi.org/10.1109/NAP51885.2021.9568617","url":null,"abstract":"Zeolite supported nanostructured Ni and Co catalysts were synthesized at ambient conditions by cation-exchange reaction followed by a reduction of the adsorbed ions by NaBH4. Using UV-vis spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy it was concluded that obtained products contained up to 3 wt. % of metal catalysts while the formed metallic nanoparticles were evenly distributed at the surface of the zeolite granules. Kinetics of hydrolysis of NaBH4 in presence of Ni and Co based catalysts has been characterized and related to the rate of hydrogen generation. Using both amorphous and zeolite supported Ni and Co nanocatalysts leads to a stable generation of hydrogen in wide range of NaBH4 concentrations and results in high extent of its conversion. Both amorphous and zeolite supported Ni and Co allow achieving a fast kinetics of hydrogen evolution, even though synthesized “in situ” amorphous Ni and Co showed a performance which was 25 % superior as compared to the catalysts deposited on zeolite. In combination with the high stability of the obtained nanocatalysts this suggests a potential of their application in the systems for hydrogen generation.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"46 2 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83406002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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