Article
Materials Science, Multidisciplinary
Gi Hyun Kim, Il Sohn
Summary: The effects of alkali metal cations and fluoride anions on the viscosities and structures of high-temperature melts were investigated in this study. Substituting larger alkali metal cations increased viscosity and enhanced the degree of polymerization of the structural units. Substitution with alkali metal fluorides reduced viscosity but enhanced polymerization.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Wanlin Wang, Xiong Yan, Lejun Zhou, Houfa Wu, Qing Zheng, Ru Zhao
Summary: Electropulsing treatment (EPT) is a promising technology for controlling phase transition during solidification. This study investigated the effects of EPT on the crystallization and melt structure of a calcium silicate-based mold flux. The results showed changes in crystal morphology and composition, as well as simplification of the network structure through electropulsing. This study provides an innovative method for locally controlling mold flux crystallization behavior.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Gustavo Lanza, Mawin J. Martinez Jimenez, Fernando Alvarez, Jaime Andres Perez-Taborda, Alba Avila
Summary: In this study, a method to fine-tune the valence states of gold nanoparticles (AuNPs) through annealing and ion bombardment was reported. XPS analysis showed that low-energy ion bombardment could dynamically adjust the valence states of gold from Au3+ and Au1+ to Au-0. Controlling the reduction in valence states is crucial for surface engineering and catalytic reaction control.
Article
Crystallography
Yanshan Yin, Zihua Wu, Jianhang Tao, Caiwen Qi, Wei Zhang, Shan Cheng
Summary: This paper investigates the evolution of the chemical structure of coal char during pyrolysis. The results show that the degree of order and the content of graphite-like microcrystalline carbon in coal char vary with pyrolysis temperatures. The relative content of C=O and COOH in coal char decreases with increasing temperature, indicating an increase in the degree of order at higher temperatures.
Article
Materials Science, Multidisciplinary
Wenliang Zhu, Kazuyuki Arao, Elia Marin, Tatsuro Morita, Morimasa Nakamura, Paola Palmero, Jean-Marc Tulliani, Laura Montanaro, Giuseppe Pezzotti
Summary: This paper analyzes the effects of secondary phases in ZrO2 substrates on the structure of DLC films and their structural stability under indentation prints. The results show that oxygen from the oxide substrates is incorporated into the DLC films during deposition, and the sp(3) carbon content depends on the oxygen fraction and gas pressure. Moreover, structural distortion at the film/substrate interface and changes in Raman spectral morphology of carbon induced by structural alterations are observed.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
J. Becker, J. Pelle, S. Rioual, B. Lescop, N. Le Bozec, D. Thierry
Summary: This study investigated the effect of two concentrations of H2S on the atmospheric corrosion of pure Ag, Cu, and Ni. The corrosion products were analyzed using various techniques such as SEM/EDX, Raman spectroscopy, XPS, and XRD. Different corrosion products were identified based on the characterization methods, providing a better understanding of the impact of H2S on the atmospheric corrosion of these metals. The possible mechanisms involved in the formation of these corrosion products were also discussed in this study.
Article
Chemistry, Physical
Nirmala Rani, Kanika Khurana, Neena Jaggi
Summary: CNTs based nanocomposites are highly promising materials in various fields due to their excellent properties. This research focused on spectroscopic study of FMWCNTs nanocomposites with different wt% of SnO2 NPs, confirming structural defects through XRD and Raman spectroscopy, chemical composition through XPS, and morphology through FESEM and TEM analysis. FTIR spectroscopy was used to validate the presence of different functional groups on the FMWCNTs and SnO2/FMWCNTs nanocomposites.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Yang Zhang, Yanhan Jin, Jinglan Liu, Qiancheng Ren, Zhengyang Chen, Yi Zhao, Pei Zhao
Summary: In this study, a novel method for strained graphene on a rigid substrate assisted by PDMS stretching and interface adjustments is proposed. The maximum strain of graphene on the SiO2/Si substrate is approximately 1.5%, and it exhibits high cleanness, flatness, integrity, and reliable electrical performance. The successful strain engineering is attributed to the protection of a layer of formvar resin and the interfacial capillary force of the buffering liquid. This technique can advance strain-related fundamental studies and applications of two-dimensional materials.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Physical
Luciano F. Filho, Fernando N. N. Pansini, Fabio A. L. de Souza
Summary: The study using density functional theory reveals that the stability of strontium oxide nanoclusters is influenced by the geometry, with deviations from cuboid shape leading to increased reactivity. Raman scattering can differentiate between one and two-dimensional clusters and identify clusters with ring structures. The findings suggest that Raman spectroscopy is a promising experimental technique for characterizing small nanoclusters.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2021)
Article
Instruments & Instrumentation
Jerzy Goraus, Jacek Czerniewski
Summary: The study presents calculation results of band structure evolution in Fe2P-type materials where iron and phosphorus are substituted by silicon and manganese, obtained through density functional theory. It demonstrates how peaks in the valence band density of states shift with different element doping. Additionally, simulated X-ray Absorption Spectra (XAS) and X-ray Photoemission (XPS) valence band spectra are provided.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2021)
Article
Chemistry, Physical
Kunal J. Tiwari, Robert Fonoll Rubio, Sergio Giraldo, Lorenzo Calvo-Barrio, Victor Izquierdo-Roca, Marcel Placidi, Yudania Sanchez, Alejandro Perez-Rodriguez, Edgardo Saucedo, Zacharie Jehl Li-Kao
Summary: The study presents a method to probe the depth morphology, defect profile, and possible secondary phases in thin film semiconductors. By analyzing the morphology of Kesterite films, it is found that more than 50% of the absorber is disconnected from the substrate, highlighting a potential limitation in Kesterite solar cells. Surface-sensitive techniques allow for accurate composition profiling and direct observation of defects in Kesterite.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
K. Tamargo-Martinez, S. Villar-Rodil, A. Martinez-Alonso, J. M. D. Tascon
Summary: This study investigates the effect of low-pressure microwave discharge oxygen plasma treatment on two types of high-surface area graphite. The results show that longer plasma treatment leads to an increase in graphitic order and the formation of surface-functionalized materials without compromising their thermal stability and aromatic network. Additionally, the longer plasma exposure contributes to the development of an edge surface-functionalized graphite. Mechanical damage sub-surface caused by the milling process was also observed in one of the materials.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
A. R. Zanatta, F. Cemin, F. G. Echeverrigaray, F. Alvarez
Summary: This paper investigates the physico-chemical properties of titanium oxynitride films using Raman scattering and X-ray photoelectron spectroscopy, showing that these techniques can effectively characterize the structure and oxidation state of the films. The experimental data indicate a proportional relationship between the TiO2 and TiN-related phonon modes and the oxygen and nitrogen contents of the films, as well as a variation in the chemical oxidation states.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Review
Materials Science, Multidisciplinary
Mikhail Shekhirev, Christopher E. Shuck, Asia Sarycheva, Yury Gogotsi
Summary: The field of MXene continues to grow as more research groups investigate this large class of 2D materials. While synthesis and applications have been widely discussed, the importance of characterization is often overlooked. This review focuses on various advanced characterization techniques for understanding the precursor suitability, successful synthesis, composition, structure, and properties of MXene.
PROGRESS IN MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
L. Charpentier, A. Kauffmann, E. Beche, C. Escape, S. Laube, D. Schliephake, J. Esvan, B. Gorr, A. Soum-Glaude, M. Heilmaier
Summary: This study discusses how the oxidation of refractory element-based alloys affects their optical properties, specifically through changes in surface composition and roughness. The results show that the oxidation process significantly increases the spectral emissivity of the samples. The oxidized TMCA and TMCTA alloys exhibit a higher solar absorptivity compared to state-of-the-art Ni-based alloys used in solar power plants, making them promising candidates for solar thermal energy conversion applications.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Rinat Taziev, Victor Atuchin
Summary: The surface acoustic wave (SAW) properties of potassium titanyl phosphate (KTiOPO4, KTP) single crystal were evaluated using numerical methods. The phase velocity, electromechanical coupling coefficient, power flow deflection angle, and temperature coefficient of delay (TCD) were determined for different crystal cuts of KTP. It was found that the Z-cut and wave propagation direction along the X + 70 degrees-axis have an electromechanical coupling coefficient of 0.59% and a TCD of 62 ppm/degrees C for SAW, while the Z-cut and wave propagation direction along the X-axis have a pseudo-surface wave (PSAW) characterized by a coupling coefficient of 0.46% and a TCD value of 57 ppm/degrees C. The Bleustein-Gulyaev (BG) wave has TCD values of 35 ppm/degrees C and 41 ppm/degrees C for the Y-cut and X-cut of KTP, respectively.
Article
Chemistry, Multidisciplinary
Timur S. Shamirzaev, Victor V. Atuchin, Vladimir E. Zhilitskiy, Alexander Yu. Gornov
Summary: The study investigates the impact of thermally generated equilibrium carrier distribution on vacancy generation, recombination, and mobility in a semiconductor heterostructure with an undoped quantum well. The different rate of thermally generated equilibrium carriers in layers with different band gaps creates a charge-carrier density gradient in the heterostructure at annealing temperatures. The research reveals that the strong dependence of vacancy formation rate on local charge-carrier density results in nonuniform spatial distribution of charged vacancy concentration. A model considering this effect and the dynamics of nonequilibrium vacancy concentration is developed for vacancy-mediated diffusion during high-temperature annealing.
Article
Physics, Applied
J. -c. Grivel
Summary: MgB2 polycrystalline bulk samples were prepared by reacting Mg and B powders with different amounts of Rb2CO3 or Cs2CO3 powders. The lattice parameter of the a-axis decreased with increasing carbonate addition, more significantly with Cs2CO3 than with Rb2CO3, while the c-axis parameter marginally increased. The superconducting transition temperature of MgB2 decreased with the addition of carbonate compounds. EDS analysis showed the presence of Cs and possibly Rb in the samples after reaction, but it was uncertain whether they entered the MgB2 lattice. The critical current density of MgB2 was improved under low applied magnetic field with the addition of 1 mol.% Rb2CO3 or 1 mol.% Cs2CO3, indicating the possibility of a transient liquid phase improving crystallinity and critical current density at low field.
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Demid S. Abramkin, Mikhail O. Petrushkov, Dmitrii B. Bogomolov, Eugeny A. Emelyanov, Mikhail Yu. Yesin, Andrey V. Vasev, Alexey A. Bloshkin, Eugeny S. Koptev, Mikhail A. Putyato, Victor V. Atuchin, Valery V. Preobrazhenskii
Summary: In this study, the formation, structural properties, and energy spectrum of self-assembled GaSb/AlP quantum dots (SAQDs) were investigated. The growth conditions for SAQDs were determined on both GaP and GaP/Si substrates. The relaxation of strain in SAQDs on GaP/Si substrates did not affect the luminescence efficiency, while the introduction of dislocations in GaP-based SAQDs led to a quenching of luminescence. The energy spectrum of GaP/Si-based SAQDs was found to be of type II with an indirect bandgap.
Article
Crystallography
Chang Sung Lim, Aleksandr Aleksandrovsky, Maxim Molokeev, Aleksandr Oreshonkov, Victor Atuchin
Summary: New triple molybdates LixNa1-xCaLa0.5(MoO4)(3):Er(3+)0.05/Yb(3+)0.45 (x = 0, 0.05, 0.1, 0.2, 0.3) were successfully synthesized using microwave-assisted sol-gel-based technique. The crystal structure of the compounds was determined to be scheelite-type. The optimization of upconversion luminescence was found to be controlled by the excitation/energy transfer channel, with maximum luminescence at lithium content x = 0.05.
Article
Crystallography
Nikita O. Azarapin, Nikolay A. Khritokhin, Victor V. Atuchin, Alexey A. Gubin, Maxim S. Molokeev, Shaibal Mukherjee, Oleg V. Andreev
Summary: The oxidation reactions of BaLaCuS3 in the artificial air atmosphere at different heating rates were studied. The oxidation stages were determined using DSC-TG, XRD, and IR-vis methods. The kinetic characteristics of the reactions were analyzed using the Kissinger model. BaLaCuS3 was stable up to 280°C but underwent three main oxidation stages upon further heating up to 1200°C. The final result of the high-temperature treatment was a mixture of barium sulfate, copper (II) oxide, and La2CuO4.
Article
Engineering, Chemical
Daria M. Turgunalieva, Alena L. Stalinskaya, Ilya I. Kulakov, Galina P. Sagitullina, Victor V. Atuchin, Andrey V. Elyshev, Ivan V. Kulakov
Summary: The multicomponent reaction of 2-nitroacetophenone, acetaldehyde diethyl acetal, beta-dicarbonyl compound, and ammonium acetate in acetic acid solution yielded 4-methyl-substituted derivatives of previously undescribed 5-nitro-1,4-dihydropyridine. Oxidation of the obtained derivatives resulted in 2,4-dimethyl-5-nitropyridines. This study also introduced the use of acetaldehyde diethyl acetal as a source of acetaldehyde in the synthesis of unsymmetrical 1,4-dihydropyridines, which produced controlled synthesis of unsymmetrical 5-nitro-1,4-dihydropyridines. The proposed multicomponent approach allowed the synthesis of previously undescribed substituted 5(3)-nitropyridines.
Article
Microbiology
Victor V. Atuchin, Lyudmila K. Asyakina, Yulia R. Serazetdinova, Anna S. Frolova, Natalia S. Velichkovich, Alexander Yu. Prosekov
Summary: Heavy-metal contaminants are a significant problem in agriculture, threatening food security due to their high toxicity and ability to accumulate in soils and crops. This study aims to develop a consortium of microorganisms isolated from technogenic sites to address soil restoration in agriculture. Promising strains capable of removing heavy metals were selected, and a consortium (Consortium D) consisting of Achromobacter denitrificans, Klebsiella oxytoca, and Rhizobium radiobacter was found to be the most effective. Consortium D demonstrated the ability to produce phytohormones and remove heavy metals from experimental media. Furthermore, the combined use of Trifolium pratense L. and Consortium D improved the efficiency of phytoremediation. Further research will focus on developing a biological product for land remediation in agriculture.
Article
Chemistry, Inorganic & Nuclear
Ksenia A. Nadeina, Sergey V. Budukva, Yuliya V. Vatutina, Polina P. Mukhacheva, Evgeniy Yu. Gerasimov, Vera P. Pakharukova, Igor P. Prosvirin, Tatyana V. Larina, Oleg V. Klimov, Aleksandr S. Noskov, Victor V. Atuchin
Summary: Among the known synthesis procedures and reagents for unsupported Ni-Mo-W catalysts, there is no consensus about optimal preparation conditions. In this study, Ni-Mo-W precursors were prepared via three different techniques and characterized. The catalytic activity was found to be significantly higher when all active metals are available in a mixed phase. The catalyst prepared by the spray drying method showed the highest activity.
Article
Multidisciplinary Sciences
Yurii N. Zhuravlev, Victor V. Atuchin
Summary: The Raman scattering, infrared absorption, and reflection spectra of four different crystals (BaZnBO3F, BaAlBO3F2, BaZn3BO3F2, and BaZnCO3F2) were studied using the CRYSTAL package. The study showed that the spectra were influenced by the layered structure of the crystals and the symmetry of the crystal lattice.
Article
Chemistry, Multidisciplinary
Timur S. Shamirzaev, Victor V. Atuchin
Summary: The vacancy generation dynamics in doped semiconductor heterostructures with quantum dots (QD) formed in the cationic and anionic sublattices of AlAs is investigated. It is experimentally demonstrated that the vacancy-mediated high temperature diffusion is enhanced or suppressed depending on the location of QDs in the heterostructures. A model is developed to explain the doping effect on the vacancy generation dynamics. Additionally, the impact of nonuniform charge carrier spatial distribution on the vacancy generation and diffusion at high temperatures is revealed.
Article
Optics
Vladimir A. Petrov, Gleb V. Kuptsov, Alyona O. Kuptsova, Victor V. Atuchin, Elena V. Stroganova, Victor V. Petrov
Summary: The research aims to investigate the influence of nonlinear active ions concentration profiles in Yb:YAG laser elements on temperature distribution and wavefront distortions during amplification using sub-kilowatt level diode pumping. A mathematical model is presented for the theoretical study of the amplification process in crystals with cubic crystal system. A detailed comparison of Yb:YAG active elements with different concentration profiles of Yb3+ ions is carried out. It is shown that increasing dopant concentration in the pump beam direction can optimize the temperature profile and reduce thermal-induced wavefront distortions.
Article
Biochemistry & Molecular Biology
Anastasia Dmitrieva, Oksana Kozlova, Victor Atuchin, Irina Milentieva, Anna Vesnina, Svetlana Ivanova, Lyudmila Asyakina, Alexander Prosekov
Summary: The antimicrobial properties of baicalin against H. pylori and several probiotic cultures were evaluated. Baicalin exhibited high antimicrobial activity against H. pylori and a stimulating effect on the growth of certain probiotic strains.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Ana-Elena Tutueanu, Machteld E. Kamminga, Tim B. Tejsner, Henrik Jacobsen, Henriette W. Hansen, Monica-Elisabeta Lacatusu, Jacob Baas, Kira L. Eliasen, Jean -Claude Grivel, Yasmine Sassa, Niels Bech Christensen, Paul Steffens, Martin Boehm, Andrea Piovano, Kim Lefmann, Astrid T. Romer
Summary: We conducted triple-axis neutron scattering studies on strongly underdoped La2-xSrxCuO4 (x = 0.05, 0.06, and 0.07) and presented quantitative evidence for a direct competition between low-energy magnetic fluctuations and superconductivity. Three-dimensional superconductivity was found at x = 0.06 and x = 0.07, while only a weak signal of two-dimensional superconductivity in the CuO2 planes was detected at x = 0.05. Surprisingly, we observed a suppression of the low-energy fluctuations by an external magnetic field at all three doping levels, indicating a similar response of two-dimensional superconductivity to a magnetic field as that of a bulk superconductor. Our results provide direct evidence of a gradual onset of superconductivity in cuprates.
Article
Biotechnology & Applied Microbiology
Larisa Permyakova, Irina Sergeeva, Irina Dolgolyuk, Kseniya Starovoitova, Victor Atuchin, Alexander Vereshchagin, Vasiliy Romanenko, Sergey Lashitsky
Summary: This article investigates the impact of organic acids and ultrasound on the physiological and biochemical properties of yeast in order to obtain bioactive peptides. The study used brewer's yeast S. cerevisiae W-34/70 cultivated in 11% beer wort and activated with a mix of Krebs cycle acids. The ultrasound treatment significantly increased yeast fermentation activity and the activity of enzymes involved in metabolism and proteolysis. Additionally, it enhanced the synthesis of amino acids and proteins, making it easier to extract valuable components.
FERMENTATION-BASEL
(2023)
Article
Chemistry, Inorganic & Nuclear
Caleb J. Bennett, Helen E. A. Brand, Alexander K. L. Yuen, Maria K. Nicholas, Brendan J. Kennedy
Summary: The temperature dependence of the crystal structure of Potassium Hexaiodoplatinate(IV) between 80 and 500 K is studied. Different crystal structures are observed at different temperatures, including monoclinic, tetragonal, and cubic structures. Accurate determination of the structures of K2PtI6 is important for further theoretical and practical research.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Zhuo Zeng, Jiangfu Zheng, Xiaoming Li, Changzheng Fan, Rongying Zeng, Wenqing Tang
Summary: An efficient method for phosphate removal from wastewater is urgently needed due to the environmental issue caused by excessive phosphorus. In this study, calcium aluminum layered double hydroxides (CaAl-LDHs) and six amino acid intercalated calcium aluminum layered double hydroxides (CaAl-amino acid-LDHs) were prepared and compared for their phosphate adsorption performance. L-Aspartic acid intercalated calcium aluminum layered double hydroxides (CaAl-Asp-LDHs) exhibited the highest phosphate adsorption capacity and faster removal rate compared to CaAl-LDHs. The phosphate adsorption mechanism on CaAl-Asp-LDHs involved electrostatic attraction, hydrogen bonds, complexation, and ion exchange. This environmentally friendly material shows promising potential for efficient phosphate removal from aquatic environments.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rouzbeh Aghaei Hakkak, Thomas Schleid
Summary: The novel guanidinium hydro-closo-borates with [BnHn]2- (n = 10 and 12) anions were successfully synthesized via direct reaction. The crystal structures exhibit hydrogen bonding interactions and have the potential to facilitate H2 generation.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Liqiang Ma, Pengpeng Wei, Jingfang Li, Liye Liang, Guangming Li
Summary: A novel catalyst, H4PVMo2W9O40@rht-MOF-1, was developed using a one-pot hydrothermal method. It exhibited high efficiency and reusability in esterification reactions.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Liudmila A. Gorelova, Valentiva A. Yukhno, Maria G. Krzhizhanovskaya, Oleg S. Vereshchagin
Summary: Two new Ga-Ge disordered feldspar-related compounds were successfully synthesized using melt crystallization methods. Their stability and thermal expansion properties were studied under high-temperature conditions. The results showed that both compounds are stable within the studied temperature range and exhibit anisotropic thermal expansion.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Seifeddine Bdey, Nesrine Boussadoune, Francois Allard, Jacques Huot, Gabriel Antonius, Noura Fakhar Bourguiba, Pedro Nunez
Summary: The structure of a novel arsenate compound Na3Al3(AsO4)4 has been determined using X-ray diffraction. The crystal exhibits a monoclinic space group with suitable pathways for Na+ ion migration. The accuracy of the structural model was confirmed using various validation tools and density functional theory calculations.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Amit Kumar Atri, Ujwal Manhas, Sumit Singh, Irfan Qadir, Shikha Sharma, Preteek Sharma, Devinder Singh
Summary: This study synthesizes new oxygen deficient triple layered Ruddlesden-Popper (RP) phases via sol-gel method and investigates the effects of Cr3+ doping on their structural, optical, magnetic, and photocatalytic properties. The experimental results demonstrate that Cr3+ doping alters the interactions and leads to excellent photocatalytic performance in some phases.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Dat Le Thanh, Amandine Guiet, Emmanuelle Suard, Romain Berthelot
Summary: In this study, FeNb11O29 powder samples were prepared using a microwave-assisted solid-state synthesis method for the first time. The samples obtained rapidly from submicrometric oxide precursors showed enhanced cycling performance, possibly due to the easier ionic diffusion occurring in the smaller particles.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Raimund Ziegler, Felix R. S. Purtscher, Thomas S. Hofer, Gunter Heymann, Hubert Huppertz
Summary: We have successfully synthesized a new tellurium borate crystal under high-pressure and high-temperature conditions. The crystal structure and theoretical calculations have been thoroughly discussed.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Subhendu Jana, Eric A. Gabilondo, Paul A. Maggard
Summary: This study reports the synthesis and characterization of two previously unknown multinary selenides, Ba8Hf2Se11(Se-2) and Ba9Hf3Se14(Se-2), which display unique structures and optoelectronic properties competitive with existing perovskite-type chalcogenides.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Fei Ruan, Chonggui Lei, Fenglong Zhang, Jinxiao Bao, Fen Zhou, Min Xie, Pengfei Xu, Jianquan Gao
Summary: Studying the diffusion properties of hydrogen is important for designing new proton conductors. In the past, the chemical diffusion coefficient of hydrogen in proton conductors was usually obtained through a manual calculation method, resulting in difficulty in controlling the calculation accuracy. To address this issue, a mathematical algorithm and C language computer program were developed to calculate the chemical diffusion coefficient based on Fick's second law and Romberg numerical integral. The algorithm showed high precision and powerful computing function, and has the potential to replace the manual calculation method in calculating the chemical diffusion coefficient for hydrogen in proton conductors.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Deepika Shanubhogue, Suraj Mangavati, Ashok Rao, Ru-Ting Tsao, Yung-Kang Kuo
Summary: In this study, the effect of Y doping at the Sn-site on the structural, electrical, and low-temperature thermoelectric properties of the Cu2SnSe3 system is investigated. Y-doped compounds Cu2Sn1-xYxSe3 show reduced electrical resistivity, enhanced power factor, and decreased thermal conductivity, resulting in higher ZT values.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Wei Hong, Min Qing, Xun He, Lei Wang, Yu Pu, Qiyu Li, Zhimin He, Qin Dong, Rong Li, Xinglong Gou
Summary: This study developed a simple method to prepare SnS2 nanosheets and assembled them with MXene to form SnS2/MXene. The composite material exhibited abundant active sites, superior electron/ion transfer kinetics, and a unique 2D interlayer structure, resulting in high specific capacity, outstanding rate capability, and excellent cycling stability, with potential applications in LIBs.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Heng-Yu Ruan, Xue-Qian Wu, Tian-Yu Zhang, Yi Yuan, Le Wang, Ya-Pan Wu, Qing-Wen Han, Ruan Chi, Dong-Sheng Li
Summary: Two isostructural metalorganic frameworks (MOFs), CTGU-36-Co and CTGU-36-Ni, were synthesized, and CTGU-36-Ni demonstrated high activity as a molecular electrocatalyst for the methanol oxidation reaction.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rachid Fakhreddine, Ali Ouasri, Abderrahim Aatiq
Summary: This paper reports the synthesis, structure, and spectroscopic studies of three novel metal orthophosphate salts. The structures of these compounds were refined using X-ray powder diffraction data. The infrared and Raman analysis revealed their symmetries and the UV-visible investigation determined their optical properties.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
