Journal of Solid State Chemistry最新文献

{"title":"Investigation of 5D0 → 7F4 strong emission in CaEuGa3O7 and application of LED in plant growth","authors":"Chunmiao Cui ,&nbsp;Jiahui Yang ,&nbsp;Bingyang Zeng ,&nbsp;Chenglong Xia ,&nbsp;Haoyuan Weng ,&nbsp;Yue Guo ,&nbsp;Xiaoguang Liu ,&nbsp;Ling Li","doi":"10.1016/j.jssc.2025.125485","DOIUrl":"10.1016/j.jssc.2025.125485","url":null,"abstract":"<div><div>This paper aims to explore new phosphor materials with strong ⁵D₀ → ⁷F₄ peaks and apply them to plant growth LEDs. In this paper, a series of new CaEuGa₃O₇ phosphors doped with Bi, Ge, and Tb were synthesized by traditional high-temperature solid-phase method, XRD pattern and the structure, optical properties and application of the phosphors were studied. Under the irradiation of 365 nm ultraviolet light, the sample shows a deep red light. Photoluminescence spectra shows that CaEuGa₃O₇ has the strongest peak of ⁵D₀ → ⁷F₄, indicating its potential application in plant growth LEDs. In addition, doping with different concentrations of Bi, Ge, and Tb reduced the overall intensity of the matrix, but in the spectrum of Bi doping, it was found that the emission intensity ratio of ⁵D₀ → ⁷F₄ to ⁵D₀ → ⁷F₂ was increased, even higher than that of the matrix, and the charge transfer band was red-shifted. To determine the occupancy of the doped ions in the matrix, POST (Preferential Occupancy Site Theory) was used to analyze the situation of the doped ions. When the bond atomization energy between the doped ions and the cations in the host lattice is closer, that is, when the bond atomization energy deviation is the smallest, the doped ions are more likely to occupy the sites of the cations. The matrix CIE chromaticity coordinates (0.6527, 0.3469) are located in the deep red region, indicating that it has the potential for application in the field of plant lighting LEDs.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125485"},"PeriodicalIF":3.2,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the iodine adsorption properties of hexaphenylsilole-triazine porous organic polymer","authors":"Tongmou Geng,&nbsp;Yachen Wang,&nbsp;Feng Zhu","doi":"10.1016/j.jssc.2025.125484","DOIUrl":"10.1016/j.jssc.2025.125484","url":null,"abstract":"<div><div>The hexaphenylsilole-based porous organic polymer (THPS), was synthesized for the first tine via a Friedel-Crafts reaction with 1,1,2,3,4,5-hexabenylthirole and cyanuric chloride in 1,2-dichloroethane under the catalysis of anhydrous aluminum muriate. The specific surface areas of Brunauer-Emmett-Teller and Langmuir reach 1579 and 2081 m² g⁻¹, respectively. THPS can efficiently and reversibly adsorb I₂ in both the gas phase (1.94 g g⁻¹) and the liquid phase. Because THPS has weak adsorption on water and cyclohexane, its adsorptive capacities and adsorption efficiencies in both solution are high, and up to 23.91 mg g⁻¹ and 95.62 % in 100 mg mL⁻¹ iodine-cyclohexane solution, 260.04 mg g⁻¹ and 91.01 % in the 300 mg L⁻¹ iodine-water solution. The adsorption behaviors fit the pseudo-first kinetic model, with high linear correlation coefficient (R²) of 0.9965, 0.9965, and 0.9967 in vapor at 77 °C, in iodine-cyclohexane solution, and iodine-water solution, respectively. Iodine adsorption is the result of electron transfer from THPS to iodine molecules. The adsorbed iodine can be released by heating or in ethanol. After 5 cycles, its iodine adsorption capacity and desorption efficiency of THPS did not change significantly.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125484"},"PeriodicalIF":3.2,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing the electrocatalytic hydrogen evolution performance of Co-based MOF-derived materials through regulating ligand building blocks","authors":"Hua-Li He ,&nbsp;Ru-Jin Ning ,&nbsp;Jin-Long An ,&nbsp;Wen-Da Tao ,&nbsp;Shou-Qin He ,&nbsp;Juan Li ,&nbsp;Ling Qin","doi":"10.1016/j.jssc.2025.125482","DOIUrl":"10.1016/j.jssc.2025.125482","url":null,"abstract":"<div><div>Three similar ligands were chosen for the syntheses of cobalt-based metal-organic frameworks (Co-MOFs): 1,4-Di(4-pyridyl)benzene (Dpb), 3,5-Bis(4-pyridyl)-1,2,4-triazolyl (Bpta), 2,5-Bis(4-pyridyl)-1,3,4-thiadiazole (Bpt), and 5-aminoisophthalic acid (NH₂bdc). The catalysts were obtained by pyrolyzing the above-mentioned Co-MOFs at varying temperatures, and their electrocatalytic hydrogen evolution performances were studied in detail. The results revealed notable variations in the performance of the three derived catalysts, among them, the derived catalysts from Dpb-based MOFs demonstrating the highest electrocatalytic activity, an overpotential of 162 mV can achieve a current density of 10 mA cm⁻². The overpotentials of Bpta derived catalysts and Bpt derived catalysts were 295 mV and 427 mV respectively, which can drive a current density of 10 mA cm⁻². In addition, the C_dl value of the Dpb-based MOF-derived catalyst (36.5 mF cm⁻²) was higher than the C_dl value of the Bpta-based MOF-derived catalyst (6.5 mF cm⁻²) and the Bpt-based MOF-derived catalyst (0.5 mF cm⁻²). This work demonstrates optimizing electrocatalytic hydrogen evolution performance can be achieved by adjusting the ligand structures.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125482"},"PeriodicalIF":3.2,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strontium manganese selenite chloride Sr2Mn(SeO3)2Cl2: synthesis, crystal structure, optics, thermodynamics and first principles calculations","authors":"Nikita V. Astakhov ,&nbsp;Alexey N. Kuznetsov ,&nbsp;Peter S. Berdonosov ,&nbsp;Artem V. Moskin ,&nbsp;Ekaterina S. Kozlyakova ,&nbsp;Alexander N. Vasiliev","doi":"10.1016/j.jssc.2025.125475","DOIUrl":"10.1016/j.jssc.2025.125475","url":null,"abstract":"<div><div>Newly synthesized strontium manganese selenite chloride, Sr₂Mn(SeO₃)₂Cl₂ extend Sr₂M(SeO₃)₂Cl₂ family, crystallizes in monoclinic space group <em>P2</em>_<em>1</em><em>/n</em> (№14) with the unit cell parameters <em>a</em> = 5.45700(4) Å, <em>b</em> = 6.40651(5) Å, <em>с</em> = 12.56244(9) Å, β = 92.8829(4)°, <em>Z</em> = 2. Its crystal structure is comprised by dense layers of edge-sharing SrO₆Cl₂ polyhedra, which are separated by isolated chains of MnO₄Cl₂ octahedra interlinked by SeO₃ trigonal pyramids. In qualitative agreement with density functional theory calculations the title compound is an indirect wide-gap semiconductor with a gap Δ = 4.7 eV. Magnetically, it experiences consecutive short-range and long-range antiferromagnetic order. Below Neel temperature <em>T</em>_N = 3 K, Sr₂Mn(SeO₃)₂Cl₂ evidences a succession of spin-flop at μ₀<em>H</em>₁ = 1.79 T and spin-flip at μ₀<em>H</em>₂ = 5.67 T transitions. Intrachain <em>J</em>₁ = − 0.52 K and interchain <em>J</em>₂ = − 0.02 K exchange interactions differ by order of magnitude making the title compound a quasi-one-dimensional spin <em>S</em> = 5/2 system.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125475"},"PeriodicalIF":3.2,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, structure, and thermodynamic analysis of the polymorphs of thorutite, ThTi2O6","authors":"Malin C. Dixon Wilkins ,&nbsp;Natalie Yaw ,&nbsp;Xiaofeng Guo ,&nbsp;John S. McCloy ,&nbsp;Neil C. Hyatt","doi":"10.1016/j.jssc.2025.125476","DOIUrl":"10.1016/j.jssc.2025.125476","url":null,"abstract":"<div><div>Polycrystalline α-ThTi₂O₆ was synthesised by a solid-state route for the first time and characterised by neutron diffraction, Raman spectroscopy, and drop solution calorimetry. Alongside the brannerite-structured β-ThTi₂O₆, the structure of α-ThTi₂O₆ was refined from high resolution time-of-flight neutron diffraction data, with both structures showing a small degree of Ti mixed occupancy on the 2a Th-site, 0.024 (2) f. u. and 0.018 (2) f. u. for the α and β polymorphs, respectively. A detailed description of the α-ThTi₂O₆ structure is presented, as well as discussion of the narrow compositional field of stability that it inhabits, relative to the brannerite, aeschynite, and euxenite structures seen more commonly for titanate AB₂O₆ materials. High temperature oxide melt drop solution calorimetric measurements show for the first time that, whilst β-ThTi₂O₆ is only entropically stabilised (ΔH_f,ox = 11.5 ± 5.1 kJ mol⁻¹) at elevated temperatures, α-ThTi₂O₆ is enthalpically stabilised (ΔH_f,ox = −22.3 ± 3.6 kJ mol⁻¹).</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125476"},"PeriodicalIF":3.2,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-temperature negative temperature coefficient (NTC) property and mechanism of high-entropy (La0.2Nd0.2Sm0.2Eu0.2Yb0.2)2Sn2O7 pyrochlore ceramics","authors":"Ran Li,&nbsp;Yaoning Bai,&nbsp;Zhewei Zheng,&nbsp;Huiming Ji","doi":"10.1016/j.jssc.2025.125479","DOIUrl":"10.1016/j.jssc.2025.125479","url":null,"abstract":"<div><div>In this study, (La_0.2Nd_0.2Sm_0.2Eu_0.2Yb_0.2)₂Sn₂O₇ high-entropy oxide ceramics with single pyrochlore phase structure were synthesized by high-temperature solid-state reactions, and their high-temperature electrical properties were investigated. High-entropy ceramics with single pyrochlore phase were prepared at sintering temperatures of 1400 °C–1600 °C. The grain size and relative density of high-entropy ceramics increase with the increase of sintering temperatures. High-entropy ceramics exhibit excellent negative temperature coefficient (NTC) performance in the temperature range of 900–1350 °C. The conductive mechanism of high-entropy ceramics which have high electrical resistivity and high activation energy is oxygen vacancies and oxygen ions migration mechanism. Due to their excellent temperature stability and sensitivity, the high-entropy pyrochlore phase ceramics are suitable for temperature monitoring applications in high-temperature environments.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125479"},"PeriodicalIF":3.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption of sodium diclofenac on vinylbenzyl trimethylammonium chloride-modified covalent organic polymer","authors":"Shaopeng Zhang ,&nbsp;Jie Ding ,&nbsp;Dayong Tian ,&nbsp;Jing Wang ,&nbsp;Ruiqin Kang ,&nbsp;Jiaohui Xia ,&nbsp;Shengbo Yang ,&nbsp;Minghua Lu","doi":"10.1016/j.jssc.2025.125480","DOIUrl":"10.1016/j.jssc.2025.125480","url":null,"abstract":"<div><div>The effective removal of diclofenac sodium (DCF) has become an important topic in waste management because of its poor efficiency in wastewater treatment. In this study, covalent organic polymer (COPs) were modified with vinylbenzyl trimethylammonium chloride (VTC), an organic compound containing abundant aromatic rings and quaternary ammonium groups. The structure of the resulting adsorbent (VTC-COPs) was investigated via FTIR, XRD, TGA, SEM, BET, and XPS. The modified VTC-COPs exhibited a mesopore structure with a pore size of 27.9 nm and a specific surface area of 38.5 m²/g. The DCF removal performance of VTC-COPs in aqueous solutions was evaluated by a batch adsorption experiment. At pH 6, the saturated adsorption capacity of VTC-COPs reached 458 mg/g, whereas that of the original C<img>C-COPs was 346 mg/g. The results show that the Langmuir adsorption isotherm and pseudo-second-order kinetic models can effectively describe the equilibrium adsorption process. According to the Langmuir model, the maximum adsorption capacity of the adsorbent VTC-COPs at 298 K was 616 mg/g. The negative ΔH and ΔG values obtained through thermodynamic parameters confirmed that the DCF adsorption of VTC-COPs was a spontaneous exothermic process. Coexisting ions influenced adsorption in the following order: PO₄³⁻ &gt; SO₄²⁻ &gt; CO₃²⁻ &gt; NO₃⁻ &gt; Cl⁻. The desorption experiment shows that DCF desorption can recover the material in a 0.1 mol/L NaOH solution. After 10 sorption-desorption cycles, the performance loss of VTC-COPs was only 5 %. The post-adsorption FTIR, BET, SEM, and XPS analysis results show that the nitrogen functional groups and aromatic rings of VTC-COPs interact with DCF. The adsorption mechanism is primarily based on electrostatic interaction, π–π interaction, and pore filling. According to these results, VTC-COPs can be considered a viable adsorbent for removing DCF from wastewater.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125480"},"PeriodicalIF":3.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced structure flexibility in oxygen-deficient open framework Al2W3O12: Evidence from heat capacity and high-pressure Raman spectroscopy","authors":"Bojan A. Marinkovic ,&nbsp;Esteban Moreno ,&nbsp;Tercio Almeida ,&nbsp;Michel B. Johnson ,&nbsp;Waldeci Paraguassu ,&nbsp;Mary Anne White","doi":"10.1016/j.jssc.2025.125478","DOIUrl":"10.1016/j.jssc.2025.125478","url":null,"abstract":"<div><div>This study explores the structural flexibility of oxygen-deficient Al₂W₃O₁₂, through heat capacity and high-pressure Raman spectroscopy measurements. The synthesis of oxygen-deficient Al₂W₃O₁₂ was achieved <em>via</em> controlled atmospheres, yielding samples with different oxygen vacancy concentrations. In oxygen-deficient samples, heat capacity data revealed enhanced low-temperature vibrational dynamics, and high-pressure Raman spectroscopy identified distinct shifts in vibrational modes, indicating increased structural flexibility compared to the defect-free phase. In addition, the critical pressures of phase transitions were lower in oxygen-deficient samples, corroborating their reduced stiffness and enhanced flexibility. These findings deepen our understanding of the role of oxygen vacancies in modulating the thermal and structural properties of open-framework materials, contributing to potential applications in thermal management and advanced ceramics.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125478"},"PeriodicalIF":3.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural characterization of two manganese (II) phosphite-oxalate coordination polymers: Water-assisted proton conductivity and transport mechanism","authors":"Yang Lu,&nbsp;Liangliang Huang,&nbsp;Shanshan Zhao,&nbsp;Yue Yuan,&nbsp;Xin Shao,&nbsp;Yanfeng Bi","doi":"10.1016/j.jssc.2025.125477","DOIUrl":"10.1016/j.jssc.2025.125477","url":null,"abstract":"<div><div>Using N, N′-dimethylpiperazine (Me₂ppz; C₆H₁₄N₂) as structure directing agent, two new manganese phosphite-oxalate compounds with different dimensions namely, {[Mn(H₂PO₃)(C₂O₄)](H₂Me₂ppz)_0.5·H₂O}_<em>n</em> (<strong>1</strong>) and {[Mn₂Cl(H₂O)(H₂PO₃)₂(C₂O₄)_1.5](H₂Me₂ppz)}_<em>n</em> (<strong>2</strong>), were prepared under solvothermal and solvent-free conditions, respectively. Structural analyses reveal that <strong>1</strong> displays a 3D framework with intersecting channels, while <strong>2</strong> shows a layer structure with 12-membered ring (MR) windows. For <strong>1</strong>, the free water molecules acting as proton carriers to help for proton transport are located in the intersecting channels and interact with the host framework by hydrogen bonds. Furthermore, compound <strong>1</strong> displays a high proton conductivity of 2.63 × 10⁻³ S cm⁻¹ at 75 °C and 98 % relative humidity, attributed to its continuous H-bond networks providing effective proton conduction pathways. The proton transport mechanism was further investigated through the integration of crystal structural analysis, H₂O vapor adsorption data and activation energy value.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125477"},"PeriodicalIF":3.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microemulsion method synthesis of highly porous LiMn2O4 for selective lithium extraction from Salt Lakes Brine","authors":"Ying Hu,&nbsp;Yanan Wei,&nbsp;Qian Zhang,&nbsp;Wenmeihui Zhao,&nbsp;Xinyu Xu,&nbsp;Rongmei Liu,&nbsp;Guixiang Qian,&nbsp;Chao Yang","doi":"10.1016/j.jssc.2025.125473","DOIUrl":"10.1016/j.jssc.2025.125473","url":null,"abstract":"<div><div>The spinel-structured LiMn₂O₄ (LMO) is widely recognized as a promising candidate for electrochemical lithium extraction owing to its unique three-dimensional lithium-ion diffusion pathways. However, the significant agglomeration of existing commercial lithium manganese oxide (C-LMO) poses a critical limitation on its lithium-ion loading capacity during the lithium extraction process. In this study, we successfully synthesized nano-scale pure-phase spinel LMO within a CTAB–C₆H₁₂–C₅H₁₁OH–H₂O microemulsion system. The results indicate that the LMO prepared via the microemulsion method exhibits abundant pore structures, which not only significantly reduce the Li⁺ transport distance but also enhance the contact area with the electrolyte. After 60 charge-discharge cycles, the material retains 91 % of its initial specific capacity, with a stable Coulombic efficiency ranging from 97 % to 99 %.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"350 ","pages":"Article 125473"},"PeriodicalIF":3.2,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144263548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}