Article
Nanoscience & Nanotechnology
Kelsey L. Hodge, Joshua E. Goldberger
Summary: This study found a new class of transition-metal-free Zintl-Klemm phases that exhibit varying degrees of catalytic activity in the hydrogenation of phenylacetylene. The most active catalyst, a 13-layer trigonal structure of CaGaGe, showed high specific activity and excellent stability under mild conditions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yi Wang, Svilen Bobev
Summary: This work presents the synthesis and crystal structures of NaSrSb, NaBaSb, and NaEuSb ternary compounds. They have isostructural hexagonal ZrNiAl-type structures, with Sb3- anions arranged in layers and alkali/alkaline-earth cations in tetrahedral/square pyramidal coordination environments. The valence partitioning follows the valence rules, and the compounds exhibit intrinsic semiconductor behavior. Electronic band structure calculations suggest a direct gap of about 0.9 eV and the possibility of inverted Dirac cones in NaBaSb, resembling topological quantum materials.
Review
Chemistry, Multidisciplinary
Max Schuetz, Christian Gemel, Wilhelm Klein, Roland A. Fischer, Thomas F. Faessler
Summary: This article discusses intermetalloid clusters of Cu-Zn, Cu-AI, Cu-Sn, and Cu-Pb, which are of the Hume-Rothery type with well-defined structures related to the valence electron count of the involved metals. Many Zintl-type and molecular clusters with these metals exhibit remarkable structural parallels to the respective solid-state phases. The synthesis of such clusters is generally achieved from organometallic precursor complexes with redox processes between the different metals as an underlying synthesis concept.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Materials Science, Multidisciplinary
David M. Smiadak, Romain Claes, Nicolas Perez, Mack Marshall, Wanyue Peng, Wei Chen, Geoffroy Hautier, Gabi Schierning, Alexandra Zevalkink
Summary: Crystals with anisotropic thermoelectric transport coefficients can exhibit high figure-of-merit if the Seebeck coefficient and thermal conductivity are relatively isotropic. In this study, the anisotropic properties of the quasi-1D Zintl phase Ca5In2Sb6 were investigated using both experimental and theoretical methods. The results showed that Ca5In2Sb6 has highly anisotropic p-type electrical conductivity and power factor, while the Seebeck coefficient and lattice thermal conductivity are relatively isotropic. This study provides experimental confirmation of highly anisotropic electrical conductivity in Zintl thermoelectrics.
MATERIALS TODAY PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Bayram Saparov, Svilen Bobev
Summary: This work presents the synthesis and crystal structures of quaternary Zintl phases. The results show the possibility of a small degree of cation disorder in addition to full cation ordering.
Article
Chemistry, Inorganic & Nuclear
David M. Smiadak, Sviatoslav Baranets, Megan Rylko, Mack Marshall, Mario Calderon-Cueva, Svilen Bobev, Alex Zevalkink
Summary: Complex Zintl phases have led to the discovery of a new thermoelectric material Ca-9()(Zn1-xInx)(4)Sb-9 (x ~ 0.9), with a structure characterized by TSb4 tetrahedra and ZnSb3 triangular units forming [T4Sb9](18-) polyanions. The heavily-disordered structure exhibits semiconducting behavior, confirmed by single crystal electrical conductivity and Seebeck coefficient measurements which suggest degenerate p-type semiconductors.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Sviatoslav Baranets, Svilen Bobev
Summary: Single crystals of YbMnSb2 have been grown using a high-temperature reaction with molten Sb as self-flux. The compound adopts a tetragonal centrosymmetric structure and shows promise for thermoelectric applications in the mid-temperature range, exhibiting low electrical resistivity and high thermopower.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Kowsik Ghosh, Svilen Bobev
Summary: This study identified variations in the structure of the Ba2LiGe3 ternary phase and introduced the concept of a new structural homogeneity range. Characterization using single-crystal X-ray diffraction methods validated the structure's responsiveness and trends in changes, further revealing the impact of covalent properties on interatomic distances and unit cell parameters.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Physics, Multidisciplinary
H. Sakai, Y. Tokiwa, P. Opletal, M. Kimata, S. Awaji, T. Sasaki, D. Aoki, S. Kambe, Y. Tokunaga, Y. Haga
Summary: The superconducting phase diagram in uranium ditelluride was investigated using high-quality single crystals under magnetic fields along the hard magnetic b axis. Low-field and high-field superconducting phases with different field-angular dependence were distinguished through electrical resistivity and ac magnetic susceptibility measurements. The crystal quality affected the upper critical field of the low-field superconducting phase, but the H* value at which the high-field superconducting phase appeared remained the same across different crystals. A phase boundary signature was also observed inside the low-field superconducting phase near H*, indicating the presence of an intermediate superconducting phase characterized by small flux pinning forces.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Tanya Berry, Sean R. Parkin, Tyrel M. McQueen
Summary: Recent research on the impact of nonsymmorphic symmetries on electronic states has led to the discovery of multiple types of topological matter. The study of EuGa2Sb2 revealed antiferromagnetic order at 8K, isotropic magnetic susceptibility above the Neel temperature, and both ferromagnetic and antiferromagnetic interactions. Specific-heat measurements indicated negligible low-dimensional spin fluctuations above the Neel temperature.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Jian Wang, Bryan Owens-Baird, Kirill Kovnir
Summary: Three new antimonide Zintl phases, RbGaSb2, CsGaSb2, and CsInSb2, show varied crystal structures and semiconductor properties with low thermal conductivity. These compounds are rare examples of n-type pnictide Zintl phases and are potential candidates for applications in electronic devices.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
James A. Sommers, Jenn M. Amador, Lauren B. Fullmer, Danielle C. Hutchison, T. Wesley Surta, Oksana Ostroverkhova, May Nyman, Douglas A. Keszler
Summary: This article discusses the preparation and properties of glasses formed by aqueous solutions of zirconium and hafnium halides, as well as the crystal-glass equilibria beyond the pure glass compositions. The study reveals that the glasses are denser than their crystalline counterparts and retain specific structural units in crystals forming in contact with the glasses.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
V. V. Volkov, V. Sidey, A. Naumov, N. A. Kolyshkin, A. Kosyakov, I. N. Nekrylov, N. Yu Brezhnev, A. Yu Zavrazhnov
Summary: This article investigates the preparation and stabilization of new high-temperature semiconductor phases A (III) - B (VI) in the Ga-S system, identifying four polymorphic Ga2S3 phases and confirming the equilibrium of the gamma-Ga2+delta S3 phase. The study combines various methods of differential thermal analysis, microstructural analysis, and powder X-ray diffractometry to provide reliable results.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Andrew P. Justl, Susan M. Kauzlarich
Summary: Yb14MSb11 (M = Mg, Mn, Zn) are p-type Zintl phases with high thermoelectric efficiencies at 1000 degrees C and melting points above 1200 degrees C under vacuum and/or inert atmosphere. Oxidation behavior of Yb14MSb11 in dry air has been studied, showing different oxidation reactions in the outer layer, inner layer, and core of the material. Yb14ZnSb11 exhibits the best resistance to oxidation and holds promise for further passivation optimization.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Crystallography
Wanyue Peng, Sviatoslav Baranets, Svilen Bobev
Summary: Crystals of a new ternary compound, Ca3InAs3, have been successfully synthesized in the Ca-In-As family. The compound crystallizes in the orthorhombic space group and has InAs4 tetrahedra as the smallest building motifs. Electronic structure calculations confirm the opening of a bandgap and show intermediate covalent/ionic interactions between Ca and As, as well as strong covalent features of the In-As interactions.
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)