Pub Date : 2024-02-15DOI: 10.15330/pcss.25.1.73-78
Sameen F. Mohammed, Mahmood A. Mohammed
The current study show the results related to investigating the Compton scattering(Cs) of Indium Antimonite (InSb). 241Am with 59.54 keV Gamm-radiations source Compton spectrometer is employed for the purpose of experimental measurement. The technique of linear combination of atomic orbitals (LCAO) is utilized within the framework of density functional theory (DFT),is used to assess the theoretical values of distributing the electron momentum density. A comparison was then made between the research findings and empirical data. Additionally, calculations employing the ionic model (IO) based on the 5p state of In and the 5p state of Sb atoms reveal that 0. 5 electrons of the state of 5pIn may have been transferred to the 5p state of Sb atoms in order to estimate the charge transfer in indium antimonite (InSb).
{"title":"A study Electronic structure of InSb: Experiment and Theory","authors":"Sameen F. Mohammed, Mahmood A. Mohammed","doi":"10.15330/pcss.25.1.73-78","DOIUrl":"https://doi.org/10.15330/pcss.25.1.73-78","url":null,"abstract":"The current study show the results related to investigating the Compton scattering(Cs) of Indium Antimonite (InSb). 241Am with 59.54 keV Gamm-radiations source Compton spectrometer is employed for the purpose of experimental measurement. The technique of linear combination of atomic orbitals (LCAO) is utilized within the framework of density functional theory (DFT),is used to assess the theoretical values of distributing the electron momentum density. A comparison was then made between the research findings and empirical data. Additionally, calculations employing the ionic model (IO) based on the 5p state of In and the 5p state of Sb atoms reveal that 0. 5 electrons of the state of 5pIn may have been transferred to the 5p state of Sb atoms in order to estimate the charge transfer in indium antimonite (InSb).","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139774938","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 : 2024-02-15DOI: 10.15330/pcss.25.1.79-84
R. S. M. Ponrani, D. E. Nancy, S. G. Rejith, S. Durai
Silver-based nanomaterials have proven interesting and promising material for numerous applications such as biosensor, antimicrobial, anticancer agent, catalyst, food and water treatment, energy storage devices etc.In this study, nanoparticles of Silver and Copper were prepared by chemical reduction method, using hydrazine hydrate and Sodium borohydride as reducing agent. Fine powder of Ag-Cu nanoparticles (NPs)was obtained. The structural analysis of the sample wasdone using Powder XRD, SEM and TEM images and particle size analysis by DLS.The chemical purity and the elemental compositions of synthesized NPs were studied using SEM-EDX. Optical properties of the Ag-Cu NPs were analyzed using UV-DRS spectrum and FTIR spectrum. PXRD reveals that the NPs are highly crystalline in nature.The average crystallite size is30 nm. SEM and TEM images confirm the spherical morphology and the particle size is in nm. The DLS-particle size analyzer shows the size distribution of most of the NPs ranging from 9 nm to 100 nm. The EDX analysis reveals the percentage of elemental composition as 14.71, 9.06 and 76.23 for silver, copper and oxygen respectively. UV-DRS spectrum shows the absorption maximum occur at 371 nm. Due to the synergistic effect of silver and copper, there is blue shift in the absorption maximum. The IR spectrum discloses the metal oxide bond in the synthesized NPs.
{"title":"Study of Structural and Optical Behaviour of Silver -Copper Bimetallic Nanoparticles","authors":"R. S. M. Ponrani, D. E. Nancy, S. G. Rejith, S. Durai","doi":"10.15330/pcss.25.1.79-84","DOIUrl":"https://doi.org/10.15330/pcss.25.1.79-84","url":null,"abstract":"Silver-based nanomaterials have proven interesting and promising material for numerous applications such as biosensor, antimicrobial, anticancer agent, catalyst, food and water treatment, energy storage devices etc.In this study, nanoparticles of Silver and Copper were prepared by chemical reduction method, using hydrazine hydrate and Sodium borohydride as reducing agent. Fine powder of Ag-Cu nanoparticles (NPs)was obtained. The structural analysis of the sample wasdone using Powder XRD, SEM and TEM images and particle size analysis by DLS.The chemical purity and the elemental compositions of synthesized NPs were studied using SEM-EDX. Optical properties of the Ag-Cu NPs were analyzed using UV-DRS spectrum and FTIR spectrum. PXRD reveals that the NPs are highly crystalline in nature.The average crystallite size is30 nm. SEM and TEM images confirm the spherical morphology and the particle size is in nm. The DLS-particle size analyzer shows the size distribution of most of the NPs ranging from 9 nm to 100 nm. The EDX analysis reveals the percentage of elemental composition as 14.71, 9.06 and 76.23 for silver, copper and oxygen respectively. UV-DRS spectrum shows the absorption maximum occur at 371 nm. Due to the synergistic effect of silver and copper, there is blue shift in the absorption maximum. The IR spectrum discloses the metal oxide bond in the synthesized NPs.","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139775594","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 : 2024-02-15DOI: 10.15330/pcss.25.1.79-84
R. S. M. Ponrani, D. E. Nancy, S. G. Rejith, S. Durai
Silver-based nanomaterials have proven interesting and promising material for numerous applications such as biosensor, antimicrobial, anticancer agent, catalyst, food and water treatment, energy storage devices etc.In this study, nanoparticles of Silver and Copper were prepared by chemical reduction method, using hydrazine hydrate and Sodium borohydride as reducing agent. Fine powder of Ag-Cu nanoparticles (NPs)was obtained. The structural analysis of the sample wasdone using Powder XRD, SEM and TEM images and particle size analysis by DLS.The chemical purity and the elemental compositions of synthesized NPs were studied using SEM-EDX. Optical properties of the Ag-Cu NPs were analyzed using UV-DRS spectrum and FTIR spectrum. PXRD reveals that the NPs are highly crystalline in nature.The average crystallite size is30 nm. SEM and TEM images confirm the spherical morphology and the particle size is in nm. The DLS-particle size analyzer shows the size distribution of most of the NPs ranging from 9 nm to 100 nm. The EDX analysis reveals the percentage of elemental composition as 14.71, 9.06 and 76.23 for silver, copper and oxygen respectively. UV-DRS spectrum shows the absorption maximum occur at 371 nm. Due to the synergistic effect of silver and copper, there is blue shift in the absorption maximum. The IR spectrum discloses the metal oxide bond in the synthesized NPs.
{"title":"Study of Structural and Optical Behaviour of Silver -Copper Bimetallic Nanoparticles","authors":"R. S. M. Ponrani, D. E. Nancy, S. G. Rejith, S. Durai","doi":"10.15330/pcss.25.1.79-84","DOIUrl":"https://doi.org/10.15330/pcss.25.1.79-84","url":null,"abstract":"Silver-based nanomaterials have proven interesting and promising material for numerous applications such as biosensor, antimicrobial, anticancer agent, catalyst, food and water treatment, energy storage devices etc.In this study, nanoparticles of Silver and Copper were prepared by chemical reduction method, using hydrazine hydrate and Sodium borohydride as reducing agent. Fine powder of Ag-Cu nanoparticles (NPs)was obtained. The structural analysis of the sample wasdone using Powder XRD, SEM and TEM images and particle size analysis by DLS.The chemical purity and the elemental compositions of synthesized NPs were studied using SEM-EDX. Optical properties of the Ag-Cu NPs were analyzed using UV-DRS spectrum and FTIR spectrum. PXRD reveals that the NPs are highly crystalline in nature.The average crystallite size is30 nm. SEM and TEM images confirm the spherical morphology and the particle size is in nm. The DLS-particle size analyzer shows the size distribution of most of the NPs ranging from 9 nm to 100 nm. The EDX analysis reveals the percentage of elemental composition as 14.71, 9.06 and 76.23 for silver, copper and oxygen respectively. UV-DRS spectrum shows the absorption maximum occur at 371 nm. Due to the synergistic effect of silver and copper, there is blue shift in the absorption maximum. The IR spectrum discloses the metal oxide bond in the synthesized NPs.","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139835128","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 : 2024-02-15DOI: 10.15330/pcss.25.1.65-72
S. Syrotyuk, A.Y. Nakonechnyi, Y. Klysko, H.I. Vlakh-Vyhrynovska, Z.E. Veres
The spin-polarized electronic energy spectra of the ZnSeS solid solution were obtained based on calculations for the supercell, which contains 64 atoms. At the first stage, the properties of the material based on the Mn:ZnSeS supercell, in which Mn replaces the Zn atom, were calculated. The calculation results reveal that the material is a semiconductor for both spin orientations. The second stage is based on the simultaneous presence of a Mn impurity and a cation vacancy. Comparing the results of the first two stages allows us to reveal significant changes in the electronic energy structure caused by the cation vacancy. The material with a vacancy exhibits metallic properties for both spin orientations. The third stage is implemented for the supercell without a vacancy, but under the action of hydrostatic pressure. The material exhibits semiconducting properties for both values of the spin moment. At the fourth stage, the Mn:ZnSeS supercell with a vacancy and under pressure is considered. In the presence of pressure and a VZn vacancy, the ZnMnSeS material exhibits metallic properties for both spin orientations. A material with a vacancy and under pressure can be characterized as a magnetic metal.
{"title":"Electronic and magnetic properties of ZnSeS solid solution modified by Mn impurity, Zn vacancy and pressure","authors":"S. Syrotyuk, A.Y. Nakonechnyi, Y. Klysko, H.I. Vlakh-Vyhrynovska, Z.E. Veres","doi":"10.15330/pcss.25.1.65-72","DOIUrl":"https://doi.org/10.15330/pcss.25.1.65-72","url":null,"abstract":"The spin-polarized electronic energy spectra of the ZnSeS solid solution were obtained based on calculations for the supercell, which contains 64 atoms. At the first stage, the properties of the material based on the Mn:ZnSeS supercell, in which Mn replaces the Zn atom, were calculated. The calculation results reveal that the material is a semiconductor for both spin orientations. The second stage is based on the simultaneous presence of a Mn impurity and a cation vacancy. Comparing the results of the first two stages allows us to reveal significant changes in the electronic energy structure caused by the cation vacancy. The material with a vacancy exhibits metallic properties for both spin orientations. The third stage is implemented for the supercell without a vacancy, but under the action of hydrostatic pressure. The material exhibits semiconducting properties for both values of the spin moment. At the fourth stage, the Mn:ZnSeS supercell with a vacancy and under pressure is considered. In the presence of pressure and a VZn vacancy, the ZnMnSeS material exhibits metallic properties for both spin orientations. A material with a vacancy and under pressure can be characterized as a magnetic metal.","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139774599","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 : 2024-02-15DOI: 10.15330/pcss.25.1.65-72
S. Syrotyuk, A.Y. Nakonechnyi, Y. Klysko, H.I. Vlakh-Vyhrynovska, Z.E. Veres
The spin-polarized electronic energy spectra of the ZnSeS solid solution were obtained based on calculations for the supercell, which contains 64 atoms. At the first stage, the properties of the material based on the Mn:ZnSeS supercell, in which Mn replaces the Zn atom, were calculated. The calculation results reveal that the material is a semiconductor for both spin orientations. The second stage is based on the simultaneous presence of a Mn impurity and a cation vacancy. Comparing the results of the first two stages allows us to reveal significant changes in the electronic energy structure caused by the cation vacancy. The material with a vacancy exhibits metallic properties for both spin orientations. The third stage is implemented for the supercell without a vacancy, but under the action of hydrostatic pressure. The material exhibits semiconducting properties for both values of the spin moment. At the fourth stage, the Mn:ZnSeS supercell with a vacancy and under pressure is considered. In the presence of pressure and a VZn vacancy, the ZnMnSeS material exhibits metallic properties for both spin orientations. A material with a vacancy and under pressure can be characterized as a magnetic metal.
{"title":"Electronic and magnetic properties of ZnSeS solid solution modified by Mn impurity, Zn vacancy and pressure","authors":"S. Syrotyuk, A.Y. Nakonechnyi, Y. Klysko, H.I. Vlakh-Vyhrynovska, Z.E. Veres","doi":"10.15330/pcss.25.1.65-72","DOIUrl":"https://doi.org/10.15330/pcss.25.1.65-72","url":null,"abstract":"The spin-polarized electronic energy spectra of the ZnSeS solid solution were obtained based on calculations for the supercell, which contains 64 atoms. At the first stage, the properties of the material based on the Mn:ZnSeS supercell, in which Mn replaces the Zn atom, were calculated. The calculation results reveal that the material is a semiconductor for both spin orientations. The second stage is based on the simultaneous presence of a Mn impurity and a cation vacancy. Comparing the results of the first two stages allows us to reveal significant changes in the electronic energy structure caused by the cation vacancy. The material with a vacancy exhibits metallic properties for both spin orientations. The third stage is implemented for the supercell without a vacancy, but under the action of hydrostatic pressure. The material exhibits semiconducting properties for both values of the spin moment. At the fourth stage, the Mn:ZnSeS supercell with a vacancy and under pressure is considered. In the presence of pressure and a VZn vacancy, the ZnMnSeS material exhibits metallic properties for both spin orientations. A material with a vacancy and under pressure can be characterized as a magnetic metal.","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139833966","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 : 2024-02-12DOI: 10.15330/pcss.25.1.57-64
N. Ivanichok, O. Ivanichok, I. Budzulyak, P. Kolkovskyi, B. Rachiy, O.A. Vyshnevskyi, D. Borchuk, I.I. Ivaniv, A.M. Soltys
Porous carbon materials (PСM) with different pore distributions in size and size of the specific surface area up to 250 m2/g were obtained by changing the carbonization temperature of plant biomass, namely walnut shells. The electrodes of electrochemical supercapacitors are formed based on the obtained carbon materials. The electrochemical behavior of PCM in 33% aqueous KOH solution has been studied by cyclic voltammetry and galvanostatic discharge-discharge methods and the value of their specific capacitance. The physicochemical processes occurring at the carbon electrode/electrolyte interface have been investigated by the method of impedance spectroscopy.
{"title":"Investigation of the effect of carbonization temperature of plant biomass on the electrochemical properties of carbon material","authors":"N. Ivanichok, O. Ivanichok, I. Budzulyak, P. Kolkovskyi, B. Rachiy, O.A. Vyshnevskyi, D. Borchuk, I.I. Ivaniv, A.M. Soltys","doi":"10.15330/pcss.25.1.57-64","DOIUrl":"https://doi.org/10.15330/pcss.25.1.57-64","url":null,"abstract":"Porous carbon materials (PСM) with different pore distributions in size and size of the specific surface area up to 250 m2/g were obtained by changing the carbonization temperature of plant biomass, namely walnut shells. The electrodes of electrochemical supercapacitors are formed based on the obtained carbon materials. The electrochemical behavior of PCM in 33% aqueous KOH solution has been studied by cyclic voltammetry and galvanostatic discharge-discharge methods and the value of their specific capacitance. The physicochemical processes occurring at the carbon electrode/electrolyte interface have been investigated by the method of impedance spectroscopy.","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139785225","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 : 2024-02-12DOI: 10.15330/pcss.25.1.57-64
N. Ivanichok, O. Ivanichok, I. Budzulyak, P. Kolkovskyi, B. Rachiy, O.A. Vyshnevskyi, D. Borchuk, I.I. Ivaniv, A.M. Soltys
Porous carbon materials (PСM) with different pore distributions in size and size of the specific surface area up to 250 m2/g were obtained by changing the carbonization temperature of plant biomass, namely walnut shells. The electrodes of electrochemical supercapacitors are formed based on the obtained carbon materials. The electrochemical behavior of PCM in 33% aqueous KOH solution has been studied by cyclic voltammetry and galvanostatic discharge-discharge methods and the value of their specific capacitance. The physicochemical processes occurring at the carbon electrode/electrolyte interface have been investigated by the method of impedance spectroscopy.
{"title":"Investigation of the effect of carbonization temperature of plant biomass on the electrochemical properties of carbon material","authors":"N. Ivanichok, O. Ivanichok, I. Budzulyak, P. Kolkovskyi, B. Rachiy, O.A. Vyshnevskyi, D. Borchuk, I.I. Ivaniv, A.M. Soltys","doi":"10.15330/pcss.25.1.57-64","DOIUrl":"https://doi.org/10.15330/pcss.25.1.57-64","url":null,"abstract":"Porous carbon materials (PСM) with different pore distributions in size and size of the specific surface area up to 250 m2/g were obtained by changing the carbonization temperature of plant biomass, namely walnut shells. The electrodes of electrochemical supercapacitors are formed based on the obtained carbon materials. The electrochemical behavior of PCM in 33% aqueous KOH solution has been studied by cyclic voltammetry and galvanostatic discharge-discharge methods and the value of their specific capacitance. The physicochemical processes occurring at the carbon electrode/electrolyte interface have been investigated by the method of impedance spectroscopy.","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139845045","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 : 2024-02-12DOI: 10.15330/pcss.25.1.178-184
K. Khrushchyk, A. Barylski, K. Aniolek, M. Karolus, L. Boichyshyn
The phase transition temperatures for amorphous metals based on aluminum Al87(Ni,Fe)8(REM)5 system were determined by differential scanning calorimetry (DSC). The mechanisms of formation and growth of nanocrystals in an amorphous matrix were predicted using kinetic models (Matusita model). It was found that after annealing at the temperature of stable nanocrystalline growth, an X-ray amorphous structure with a volume fraction of disordered nanocrystalline phases of solid state of Al(X), GdFe2, AlFe2Ni, GdFe2 for the amorphous metal alloy (AMA) Al87Y4Gd1Ni4Fe4 alloy and microcrystalline phases of solid state of Al(X), GdFe2 AlFe2Ni for the Al87Gd5Ni4Fe4 alloy are formed, which significantly affects the mechanical properties of the Al87(Ni,Fe)8(REM)5 system. The effect of annealing on the mechanical properties of amorphous aluminum-based alloys was investigated using Oliver-Pharr and Young's modulus methods it was found that thermal modification of AMAs: Al87Gd5Ni4Fe4 as a result of heat treatment of AMAs from 5 to 15 min., the microhardness increases from 0.20 GPa to 2.75 GPa, and when heat treated for 60 min at a temperatures of T3 = 645±5 K, 647±5 K, it decreases to 0.35 GPa and 0.45 GPa, respectively.
{"title":"Механічні властивості аморфних металевих сплавів системи Al87(Ni,Fe)8(REM)5 після короткочасного відпалу","authors":"K. Khrushchyk, A. Barylski, K. Aniolek, M. Karolus, L. Boichyshyn","doi":"10.15330/pcss.25.1.178-184","DOIUrl":"https://doi.org/10.15330/pcss.25.1.178-184","url":null,"abstract":"The phase transition temperatures for amorphous metals based on aluminum Al87(Ni,Fe)8(REM)5 system were determined by differential scanning calorimetry (DSC). The mechanisms of formation and growth of nanocrystals in an amorphous matrix were predicted using kinetic models (Matusita model). It was found that after annealing at the temperature of stable nanocrystalline growth, an X-ray amorphous structure with a volume fraction of disordered nanocrystalline phases of solid state of Al(X), GdFe2, AlFe2Ni, GdFe2 for the amorphous metal alloy (AMA) Al87Y4Gd1Ni4Fe4 alloy and microcrystalline phases of solid state of Al(X), GdFe2 AlFe2Ni for the Al87Gd5Ni4Fe4 alloy are formed, which significantly affects the mechanical properties of the Al87(Ni,Fe)8(REM)5 system. The effect of annealing on the mechanical properties of amorphous aluminum-based alloys was investigated using Oliver-Pharr and Young's modulus methods it was found that thermal modification of AMAs: Al87Gd5Ni4Fe4 as a result of heat treatment of AMAs from 5 to 15 min., the microhardness increases from 0.20 GPa to 2.75 GPa, and when heat treated for 60 min at a temperatures of T3 = 645±5 K, 647±5 K, it decreases to 0.35 GPa and 0.45 GPa, respectively.","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140458522","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 : 2024-02-09DOI: 10.15330/pcss.25.1.51-56
V. Mandzyuk, R. Lisovskiy, Yu.O. Kulyk, B. Rachiy, R.V. Solomovskyi
Fractal structure of porous carbon materials (PCMs) obtained by thermal modification under different regimes was investigated using the method of low-temperature porometry. It was established that at modification temperatures of 300 and 600°C, materials with a developed microporous structure are formed, the surface fractal dimension of which is 2.6. At modification temperatures of 400 and 500°C, the value of the fractal dimension of the surface decreases to a value of 2.22, which indicates the formation of an almost smooth surface due to the intensive removal of carbon atoms from the near-surface layers of the material particles, a decrease in the number of micropores with their transition into mesopores, unification of small carbon clusters into larger ones and the formation of microparticles of non-porous carbon material.
{"title":"The effect of thermal modification of turbostratic carbon on its fractal structure","authors":"V. Mandzyuk, R. Lisovskiy, Yu.O. Kulyk, B. Rachiy, R.V. Solomovskyi","doi":"10.15330/pcss.25.1.51-56","DOIUrl":"https://doi.org/10.15330/pcss.25.1.51-56","url":null,"abstract":"Fractal structure of porous carbon materials (PCMs) obtained by thermal modification under different regimes was investigated using the method of low-temperature porometry. It was established that at modification temperatures of 300 and 600°C, materials with a developed microporous structure are formed, the surface fractal dimension of which is 2.6. At modification temperatures of 400 and 500°C, the value of the fractal dimension of the surface decreases to a value of 2.22, which indicates the formation of an almost smooth surface due to the intensive removal of carbon atoms from the near-surface layers of the material particles, a decrease in the number of micropores with their transition into mesopores, unification of small carbon clusters into larger ones and the formation of microparticles of non-porous carbon material.","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139849906","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 : 2024-02-09DOI: 10.15330/pcss.25.1.45-50
O. Krupko
In the work, the additive effect of the content of crystal-forming ions Сd2+ and S2- and the stabilizer L-Cys using the method of mathematical planning of the experiment on the process of formation of CdS/L-Cys nanoparticles in potentially oxidizing conditions (without deaeration of precursor solutions) and the optical properties of colloidal solutions were investigated. obtained under conditions of pH = 7 and temperature of 220C. By statistical processing of the results, equations were obtained and diagrams of concentration dependences of the wavelength of the optical absorption edge of colloidal solutions of CdS semiconductor nanoparticles in the Сd2+ – L-Cys – S2- system were constructed.
{"title":"Research of CdS/L-cystein colloid solutions using the method of mathematical planning","authors":"O. Krupko","doi":"10.15330/pcss.25.1.45-50","DOIUrl":"https://doi.org/10.15330/pcss.25.1.45-50","url":null,"abstract":"In the work, the additive effect of the content of crystal-forming ions Сd2+ and S2- and the stabilizer L-Cys using the method of mathematical planning of the experiment on the process of formation of CdS/L-Cys nanoparticles in potentially oxidizing conditions (without deaeration of precursor solutions) and the optical properties of colloidal solutions were investigated. obtained under conditions of pH = 7 and temperature of 220C. By statistical processing of the results, equations were obtained and diagrams of concentration dependences of the wavelength of the optical absorption edge of colloidal solutions of CdS semiconductor nanoparticles in the Сd2+ – L-Cys – S2- system were constructed. \u0000 ","PeriodicalId":509433,"journal":{"name":"Physics and Chemistry of Solid State","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139850367","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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