Solid State Sciences最新文献_第2页

Phase stability of solid solution La1-xRxRh3B (R = Gd, Lu and Sc) compounds with cubic anti-perovskite type structure 具有立方反超晶型结构的固溶体 La1-xRxRh3B（R = Gd、Lu 和 Sc）化合物的相稳定性

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-23 DOI: 10.1016/j.solidstatesciences.2024.107731

{"title":"Phase stability of solid solution La1-xRxRh3B (R = Gd, Lu and Sc) compounds with cubic anti-perovskite type structure","authors":"","doi":"10.1016/j.solidstatesciences.2024.107731","DOIUrl":"10.1016/j.solidstatesciences.2024.107731","url":null,"abstract":"<div><div>We have investigated the solid solution range of single phase La1-xRxRh3B (R = Gd, Lu and Sc) compounds with a cubic anti-perovskite type structure. The behaviors of lattice parameters, hardness, and thermogravimetry–differential thermal analysis (TG-DTA) were also investigated. The cubic anti-perovskite phase exists over the entire composition range x from 0.0 to 1.0 for all La-Gd, La-Lu and La-Sc systems. Both the lattice parameters and the hardness in all La-Gd, La-Lu and La-Sc systems show a linear dependence on the degree of the substitution x of La atom. The results of TG-DTA measurements indicate that oxidation of the compounds in air begins at about 500–600 K. The mixed phases of RBO3, R2O3 and Rh are identified as oxidized products around x = 0.4 to 0.6 composition. The oxidation onset temperature, and weight gains due to the oxidation depend on the degree of substitution x. The behavior of crystallographic and physical/chemical properties in the present compounds La1-xRxRh3B strongly depend on the atomic size of the rare-earth atoms that form the cubic framework.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552195","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}

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Achieving enhanced power factor using dual substitution at Cu and S sites in tetrahedrites thermoelectric materials Cu12Sb4S13 利用四面体热电材料 Cu12Sb4S13 中 Cu 和 S 位点的双重置换来提高功率因数

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-23 DOI: 10.1016/j.solidstatesciences.2024.107729

{"title":"Achieving enhanced power factor using dual substitution at Cu and S sites in tetrahedrites thermoelectric materials Cu12Sb4S13","authors":"","doi":"10.1016/j.solidstatesciences.2024.107729","DOIUrl":"10.1016/j.solidstatesciences.2024.107729","url":null,"abstract":"<div><div>Thermoelectric (TE) materials-based devices are valuable for translating heat into electricity, but the cost is largely driven by the use of purified metals required for efficient TE performance. This study focuses on tetrahedrite materials, which are cost-effective due to their abundance in copper ore mining waste and status as one of the most widespread sulfosalts on Earth. The research investigates the effects of co-doping and iso-valent doping on the TE properties of p-type tetrahedrite samples, specifically Cu10Mn2Sb4S11Se2 (Sample A) and Cu10MnZnSb₄S11Se2 (Sample B). These samples were synthesized using hot pressing at 773 K and compared with the existing pristine compound (Cu10Mn2Sb4S13). Doping with Mn and Zn (1:1) at the Cu site was found to optimize carrier concentration and enhance phonon scattering, leading to an improved power factor. Additionally, the Se substitution at the S site also introduced band degeneracy, further increasing the power factor. Further, sample B exhibited the highest Seebeck coefficient (∼300 μV/K) at 650 K, in comparison to Sample A (∼225 μV/K) and the pristine compound (∼250 μV/K). On the other hand, Sample A demonstrated significantly higher electrical conductivity (∼0.76 × 10⁴ S/m at 650 K), ∿ three times greater than that of the other prepared samples. Notably, the power factor of Sample A (∼0.389 mW/mK2 at 650 K) was more than twice that of Sample B (∼0.141 mW/mK2) and the pristine compound (∼0.160 mW/mK2). These findings suggest that dual-site substitution at the Cu and S positions presents a promising strategy to augment the TE performance of tetrahedrite compounds.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527509","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}

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Entropy stabilized Heusler alloys for thermoelectric applications 用于热电应用的熵稳定海斯勒合金

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-22 DOI: 10.1016/j.solidstatesciences.2024.107728

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Structural, optical, and thermal traits of Sm³⁺-doped SrB₂O₄ phosphors for solid-state lighting applications 用于固态照明的 Sm³⁺ 掺杂 SrB₂O₄ 荧光粉的结构、光学和热学特性

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-18 DOI: 10.1016/j.solidstatesciences.2024.107724

{"title":"Structural, optical, and thermal traits of Sm³⁺-doped SrB₂O₄ phosphors for solid-state lighting applications","authors":"","doi":"10.1016/j.solidstatesciences.2024.107724","DOIUrl":"10.1016/j.solidstatesciences.2024.107724","url":null,"abstract":"<div><div>We synthesized Sm³⁺-doped SrB₂O₄ phosphors through a solid-state reaction method, varying the Sm³⁺ doping concentrations. Structural and morphological characteristics of material were investigated using Fourier-transform infrared spectroscopy (FTIR), X-Ray Diffraction (XRD) and scanning electron microscopy (SEM). Optical transitions were analyzed by recording the diffuse reflectance spectroscopy, while photoluminescent (PL) spectra were used to evaluate luminescence properties. The PL spectra revealed a strong orange emission at 598 nm under 402 nm excitation. The optimal Sm³⁺ doping concentration was determined to be 0.02 mol, beyond which concentration quenching occurred. This quenching is attributed to exchange-type interactions, which facilitate non-radiative energy relaxation. The CIE color chromaticity coordinates of all the synthesized phosphors fell within the orange region of the chromaticity diagram. Temperature dependent photoluminescence revealed lower activation energy and phonon energy. Thermal quenching temperature was calculated which is inline with commercially available LEDs. All of these results indicate the candidature of SrB2O4 phosphor doped with Sm3+ ions for solid state lighting and optical thermal sensing applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Enhanced photocatalytic performance of TiO2 with tunable oxygen vacancies induced by H2/N2 mixture treatment H2/N2 混合气处理诱导具有可调氧空位的 TiO2 光催化性能增强

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-18 DOI: 10.1016/j.solidstatesciences.2024.107726

{"title":"Enhanced photocatalytic performance of TiO2 with tunable oxygen vacancies induced by H2/N2 mixture treatment","authors":"","doi":"10.1016/j.solidstatesciences.2024.107726","DOIUrl":"10.1016/j.solidstatesciences.2024.107726","url":null,"abstract":"<div><div>Surface treatment can effectively modulate the surface properties of a photocatalyst to hasten the separation and transfer of photoinduced charges, ultimately achieving high photocatalytic performance. Herein, surface treatment of anatase-phase TiO2 prepared by a hydrothermal method was performed under H2/N2 mixed atmosphere. The experimental results demonstrate that roasting TiO2 in a H2/N2 atmosphere can effectively reduce partial Ti4+ to Ti3+, thereby facilitating the production of tunable oxygen vacancies (OVs) by disrupting Ti-O-Ti bonds. OVs can construct defective energy levels to bring about a decrease in the bandgap of TiO2 and an extension of light absorption range. Moreover, OVs remarkedly improve the separation of photoinduced charges of TiO2 and accelerate the photocatalytic reaction as active sites. The photocatalytic experimental results demonstrate that TiO2 exhibits the highest performance when roasting TiO2 in a H2/N2 atmosphere for 2 h, and the photocatalytic degradation rate constant of rhodamine B (RhB) and tetracycline (TC) on this sample under simulated solar light irradiation is 2.24 and 1.11 times higher than that on the reference TiO2, respectively. These findings provide valuable insights for designing highly efficient photocatalysts for effective water pollution treatment.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527507","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}

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More about the BaO(BaCO3)–Lu2O3–CuO system 关于 BaO(BaCO3)-Lu2O3-CuO 体系的更多信息

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-17 DOI: 10.1016/j.solidstatesciences.2024.107722

{"title":"More about the BaO(BaCO3)–Lu2O3–CuO system","authors":"","doi":"10.1016/j.solidstatesciences.2024.107722","DOIUrl":"10.1016/j.solidstatesciences.2024.107722","url":null,"abstract":"<div><div>The phase diagram of the BaO(BaCO3)–Lu2O3–CuO system was built at 900 °C. It comprises of 8 single-phase, 15 two-phase, and 8 three-phase regions. The boundary oxide systems Lu2O3–CuO and BaO–CuO contain the phases Lu2Cu2O5 (structure type Ho2Cu2O5, Pearson symbol oP36, space group Pna21, a = 10.702(1), b = 3.412(1), c = 12.360(1) Å, RB = 0.076) and Ba44Cu45O90 (own structure type, cI400, Im-3m, a = 18.294(3) Å, RB = 0.114), whereas in the Lu2O3–BaO(BaCO3) system the oxide-carbonate Ba3Lu2[CO3]O5 (Ba3Yb2[CO3]O5, tP26, P4/mmm, a = 4.322(1), c = 11.862(2) Å, RB = 0.107) was identified under the conditions of the experiment. Two quaternary oxides were observed. The structure of BaLu2CuO5 was confirmed (BaY2CuO5, oP36, Pnma), whereas the structure of the phase with approximate composition Ba3LuCu2O6.5 still needs to be established. The electrochemical properties of BaLu2CuO5 as cathode material in Li-ion batteries were investigated. The existence of a (in part) substitutional solid solution BaLu2CuO5:Li was confirmed by the decrease of the unit-cell volume (−0.11 %). No traces of the formation of a phase with YBCO-type structure were detected at 900 °C.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527772","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}

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Synthesis and investigation of the structure, thermal and electrical properties of new Tl5-xKxLuZr(MoO4)6 (x = 0; 0.1; 0.2; 1; 2) molybdates 新型 Tl5-xKxLuZr(MoO4)6 (x = 0; 0.1; 0.2; 1; 2) 钼酸盐的合成及其结构、热学和电学特性研究

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-17 DOI: 10.1016/j.solidstatesciences.2024.107725

{"title":"Synthesis and investigation of the structure, thermal and electrical properties of new Tl5-xKxLuZr(MoO4)6 (x = 0; 0.1; 0.2; 1; 2) molybdates","authors":"","doi":"10.1016/j.solidstatesciences.2024.107725","DOIUrl":"10.1016/j.solidstatesciences.2024.107725","url":null,"abstract":"<div><div>The traditional solid-state synthesizing method was employed to prepare Tl5-xKxLuZr(MoO4)6 (x = 0; 0.1; 0.2; 1; 2) ceramics. Structural characterization was performed through the Rietveld method on the X-ray powder diffraction data. The unit cell parameters are defined for Tl5-xKxLuZr(MoO4)6 (x = 0; 0.1; 0.2; 1; 2). Impedance spectra were measured at temperatures ranging from 300 to 800 K, covering a frequency range of 1 Hz to 1 MHz. The results show that the electrical conductivity decreases with an incrementing in the x value in the range of x = 0.1–2.0. Tl4.9K0.1LuZr(MoO4)6 has the best ionic conductivity of this series of molybdates (1.31 × 10−3 S cm−1), and Tl5LuZr(MoO4)6 has the lowest conductivity (5.51 × 10−4 S cm−1). Activation energy was found out to decrease from 1.32 eV for Tl5LuZr(MoO4)6 to 0.92 eV for Tl4.9K0.1LuZr(MoO4)6.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527505","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}

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First TPymT-Ln complexes (TPymT = 2,4,6-Tris(2-pyrimidyl)-1,3,5-triazine; Ln = Eu, Gd, Tb, Dy): Solvothermal synthesis, structure, magnetic and photoluminescent properties 首个 TPymT-Ln 复合物（TPymT = 2,4,6-三(2-嘧啶基)-1,3,5-三嗪；Ln = Eu、Gd、Tb、Dy）：溶热合成、结构、磁性和光致发光特性

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-16 DOI: 10.1016/j.solidstatesciences.2024.107723

{"title":"First TPymT-Ln complexes (TPymT = 2,4,6-Tris(2-pyrimidyl)-1,3,5-triazine; Ln = Eu, Gd, Tb, Dy): Solvothermal synthesis, structure, magnetic and photoluminescent properties","authors":"","doi":"10.1016/j.solidstatesciences.2024.107723","DOIUrl":"10.1016/j.solidstatesciences.2024.107723","url":null,"abstract":"<div><div>Four novel mononuclear lanthanide complexes, [Ln(TPymT)(NO3)3(H2O)2] (Ln: Eu3+ (1), Gd3+ (2), Tb3+ (3) and Dy3+ (4)), have been solvothermally synthesized using multidentate 2,4,6-tris(2-pyrimidyl)-1,3,5-triazine (TPymT). Compounds 1–3 have been characterized by means of elemental analysis, FT-IR, and single-crystal/powder X-ray diffraction analysis. Compound 4 was structurally characterized. The Ln3+ ion in 1–4 is ten-coordinated, where TPymT serves as an N3 donor in an isostructural series. The alternating-current magnetic studies showed frequency dependence below ca. 10 K for 3, as an indication of a single-ion magnet. The activation energy for the magnetization reorientation was estimated as Ueff/kB = 95(9) K after applying a dc bias field 2000 Oe for 3. The photoluminescent studies clarified that 1 and 3 behaved as red and green light emitters with quantum yields as high as 17 and 39 %, respectively. The TD-DFT calculation supports the energy level scheme of ground and excited states of TPymT together with the reference compound 4′-phenyl-2,2’:6′,2″-terpyridine. The present work suggests a broad chance and motivation to apply TPymT to the field of 4f coordination chemistry.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527506","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}

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Skutterudites as sustainable thermoelectric material- A critical review 作为可持续热电材料的沸石--重要综述

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-10 DOI: 10.1016/j.solidstatesciences.2024.107721

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Structure and physical properties of modified Ti2MnAl compound – Ti2Fe0.5Cr0.5Al and Ti2MnAl0.5In0.5 case 改性 Ti2MnAl 化合物 - Ti2Fe0.5Cr0.5Al 和 Ti2MnAl0.5In0.5 的结构和物理性质

IF 3.4 3区化学

Solid State Sciences Pub Date : 2024-10-10 DOI: 10.1016/j.solidstatesciences.2024.107720

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