Solid State Sciences最新文献_第9页

Influence of Pr³⁺ substitution on the structural, optical, magnetic, and dielectric properties of Sr2FeTiO6−δ double perovskites

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2025.107825

J. Stella Punitha , Ramesh Kumar Raji , Tholkappiyan Ramachandran , K. Saravana Kumar , Muthu Dhilip , Fathalla Hamed , A. Nataraj

{"title":"Influence of Pr³⁺ substitution on the structural, optical, magnetic, and dielectric properties of Sr2FeTiO6−δ double perovskites","authors":"J. Stella Punitha , Ramesh Kumar Raji , Tholkappiyan Ramachandran , K. Saravana Kumar , Muthu Dhilip , Fathalla Hamed , A. Nataraj","doi":"10.1016/j.solidstatesciences.2025.107825","DOIUrl":"10.1016/j.solidstatesciences.2025.107825","url":null,"abstract":"<div><div>Double perovskite compounds Sr2-xPrxFeTiO6−δ (x = 0.2, 0.4, 0.6, 0.8) were synthesized using a high-temperature solid-state reaction method. X-ray diffraction (XRD) analysis confirmed that all samples exhibit a cubic structure with a space group of Pm-3m. Rietveld refinement using the pseudo-Voigt function confirmed the formation of a single-phase compound with good reliability factors. Scanning electron microscopy (SEM) showed that the particles were spherical with minimal clumping and were uniform in size and shape. Energy dispersive X-ray (EDAX) analysis confirmed the presence of Sr, Pr, Ti, Fe, and O elements. The oxidation states of the constituent elements were validated by X-ray photoelectron spectroscopy (XPS), confirming the stability of the crystal structure. Diffuse reflectance spectroscopy indicated semiconductor-like behavior, with the energy band gap decreasing from 3.24 eV to 2.71 eV as Pr content increased. Dielectric studies showed a frequency and temperature-dependent dielectric constant increases with increasing Pr substitution from x = 0.2 to 0.8. Magnetic measurements revealed a transition from antiferromagnetic to ferromagnetic characteristic as the Pr concentration increased. These findings suggest that the synthesized Sr2-xPrxFeTiO6−δ compounds are promising candidates for use in advanced electronic technologies, magneto-optical storage, optoelectronic devices, and sensor applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107825"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098780","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}

引用次数: 0

Coral like g-C3N4/Br-Bi2O2CO3 type-II heterojunction with efficient photocatalytic performance and mechanism for degradation of tetracycline

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107765

Bowen Lu , Ling Wang , Xiaoya Zhu , Qinyi Gu , Chujun Feng , Jian Rong , Zhongyu Li , Song Xu

{"title":"Coral like g-C3N4/Br-Bi2O2CO3 type-II heterojunction with efficient photocatalytic performance and mechanism for degradation of tetracycline","authors":"Bowen Lu , Ling Wang , Xiaoya Zhu , Qinyi Gu , Chujun Feng , Jian Rong , Zhongyu Li , Song Xu","doi":"10.1016/j.solidstatesciences.2024.107765","DOIUrl":"10.1016/j.solidstatesciences.2024.107765","url":null,"abstract":"<div><div>Photocatalytic technology is an effective strategy to address the proliferation of antibiotics. In this study, a coral-like g-C3N4/Br-Bi2O2CO3 (C-CN/Br-BOC) photocatalyst with a type-Ⅱ heterojunction was constructed for efficient degradation of tetracycline (TC). The as-prepared C-CN/Br-BOC composites showed excellent photocatalytic performance for degradation of tetracycline. The degradation efficiency of 0.7C-CN/Br-BOC photocatalyst reached 94.2 % within 120 min, and the catalytic performance and crystal structure remained stable after 5 cycles. The enhancement of photocatalytic activity can be attributed to the formation of type-II heterojunction and the successful doping of Br elements, which significantly improves the separation ability and electron mobility of the electron-hole pairs produced by photons. In addition, the photocatalytic mechanism of C-CN/Br-BOC heterojunction and degradation pathways of TC are also proposed.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107765"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093192","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}

引用次数: 0

Tailoring Ge-Sb-Te alloys for thermoelectric applications: A review on insights from doping studies

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107813

Puspender Singh Beniwal, Yogita Batra

{"title":"Tailoring Ge-Sb-Te alloys for thermoelectric applications: A review on insights from doping studies","authors":"Puspender Singh Beniwal, Yogita Batra","doi":"10.1016/j.solidstatesciences.2024.107813","DOIUrl":"10.1016/j.solidstatesciences.2024.107813","url":null,"abstract":"<div><div>Ge-Sb-Te (GST) alloys have garnered considerable interest due to their rapid crystallization rates, thermal stability, and reversible phase change. These characteristics make them promising candidates for various applications, including thermoelectric energy conversion. Doping GST alloys has been found to enhance their thermal stability and modify the temperature at which the amorphous-to-crystalline phase transition occurs. The doping process alters the excitation energy and transition temperature of the material allowing customization for specific applications. It gives useful insights to tailor the composition of GST alloys for improved thermoelectric performance. Understanding of these processes can aid in the development of high-performance GST alloy-based thermoelectric devices, enabling efficient energy conversion and utilization of waste heat. This review discusses the potential of GST as a thermoelectric material and examines the effect of doping on its characteristics. The article begins with thermoelectric fundamentals followed by a discussion on unique properties of GST. It provides a brief explanation of the techniques used to boost the ZT value. Additionally, it discusses various strategies to get around the interdependency of factors and increase ZT. Further experimental and theoretical studies are necessary to completely utilize the potential of GST alloys in thermoelectric applications.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107813"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149350","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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Molten salt flux synthesis of two new alkali rare earth silicate fluorides: Rb3Sc2[Si4O12]F and Rb2Sm[Si4O10]F

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107802

Hunter B. Tisdale , Hans-Conrad zur Loye

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Pb1−xCoxSnS3: Synthesis, structure, and magnetic properties of a series of quaternary chalcogenides

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107818

Tuhin Subhra Dash , Prasanjit Agasti , Abinash Pradhan , Debakanta Samal , Saroj L. Samal

{"title":"Pb1−xCoxSnS3: Synthesis, structure, and magnetic properties of a series of quaternary chalcogenides","authors":"Tuhin Subhra Dash , Prasanjit Agasti , Abinash Pradhan , Debakanta Samal , Saroj L. Samal","doi":"10.1016/j.solidstatesciences.2024.107818","DOIUrl":"10.1016/j.solidstatesciences.2024.107818","url":null,"abstract":"<div><div>Quaternary metal chalcogenides, Pb1−xCoxSnS3 (x = 0.00, 0.10, 0.20, and 0.40), were synthesized from high purity elements at high temperature via sealed tube solid state synthesis method. All the compounds crystallised in the orthorhombic crystal system with Pnma space group. Single crystal study indicated that Co substitute at the Pb-site in Pb1−xCoxSnS3 in a disordered manner. The structure of Pb1−xCoxSnS3 compounds contains edge shared bi-octahedral chains of SnS6 and zig-zag chains of (Pb/Co)S running along b-direction. XPS study indicates that cobalt exists as Co2+ while tin and sulphur remain as Sn4+ and S2− respectively. Magnetic susceptibility studies on Pb1−xCoxSnS3 (x = 0.1, 0.2 and 0.40) suggest ferromagnetic ordering below 125 K. The Pb/Co-S-Pb/Co bond angle (88.6°) in the Pb/Co-S chains is very close to 90° suggesting ferromagnetic ordering in these compounds, which corroborate the magnetic susceptibility results. As the amount of Co substitution increases, the magnetic susceptibility values gradually increases as evident from the M-T curves, which is attributed to substitution of more Co2+ at the non-magnetic Pb2+ site in Pb1−xCoxSnS3. The M − H isotherms reveal saturation magnetic moment that is smaller than the expected value, possibly due to disorder of the magnetic ions in these compounds. However, neutron diffraction study is required to completely understand the detailed magnetic properties in these compounds.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107818"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149343","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}

引用次数: 0

Carbon nanotube-mediated Ni3(PO4)2/NiCo2O4 hybrids for advanced energy storage in asymmetric supercapacitors

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2025.107834

Lei Yuan, Zhenyu Zhu, Dongkun Fan, Jiarui Xun, Jie Liu, Ku Jiang, Liwei Zhang, Na Xin

{"title":"Carbon nanotube-mediated Ni3(PO4)2/NiCo2O4 hybrids for advanced energy storage in asymmetric supercapacitors","authors":"Lei Yuan, Zhenyu Zhu, Dongkun Fan, Jiarui Xun, Jie Liu, Ku Jiang, Liwei Zhang, Na Xin","doi":"10.1016/j.solidstatesciences.2025.107834","DOIUrl":"10.1016/j.solidstatesciences.2025.107834","url":null,"abstract":"<div><div>A simple hydrothermal method was proposed to synthesize a high contact area Ni3(PO4)2/NiCo2O4@CNTs composite material for asymmetric supercapacitors. By utilizing the advantages of both phosphates and bimetallic oxides and their synergistic effect after compounding, a hierarchical structure is formed, thereby improving the overall electrochemical performance of the composite material. The capacitance of this electrode material is 1563 F g−1 (1 A g−1). The capacitance of the asymmetric supercapacitor assembled positive electrode Ni3(PO4)2/NiCo2O4@CNTs and negative electrode activated carbon (AC) as the negative electrode is 102.2 F−1 at 1 A g−1. The capacity retention rate is 83.6 % after 10,000 charge and discharge cycles. In addition, when the power density is 800 W kg−1, its specific energy is as high as 36.3 Wh kg−1. It proves that the composite materials prepared by this strategy have the potential application as electrode materials for capacitors.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107834"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149426","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 superconductivity of high-quality FeSe0.98 single crystals

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107801

Zhiwei Wen , Tao Jia , Yusen Xiao , Yong Li , Yajing Cui , Shulong Li , Yong Zhao , Yongliang Chen

引用次数: 0

A new structure type of the Na3Yb(BO3)2: Synthesis, crystal structure, thermal behavior, ionic conductivity, and spectroscopy

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107821

Alexey Subanakov , Evgeniy Kovtunets , Tatyana Spiridonova , Andrey Sobolev , Maxim Molokeev , Dmitry Sofich , Alexandr Bogdanov , Bair Bazarov

{"title":"A new structure type of the Na3Yb(BO3)2: Synthesis, crystal structure, thermal behavior, ionic conductivity, and spectroscopy","authors":"Alexey Subanakov , Evgeniy Kovtunets , Tatyana Spiridonova , Andrey Sobolev , Maxim Molokeev , Dmitry Sofich , Alexandr Bogdanov , Bair Bazarov","doi":"10.1016/j.solidstatesciences.2024.107821","DOIUrl":"10.1016/j.solidstatesciences.2024.107821","url":null,"abstract":"<div><div>New structure of Na3Yb(BO3)2 has been synthesized for the first time using a solid-state reaction method. The crystal structure of the title compound was elucidated using a simulated annealing method. Samples used in powder diffraction analysis for structure determination were prepared via solid-state synthesis. To refine obtained crystal structure, the Rietveld method was applied, yielding the following parameters: triclinic symmetry (sp. gr. P <math><mover><mn>1</mn><mo>¯</mo></mover></math>.), a = 5.1661(1) Å, b = 6.6249(2) Å, c = 8.5991(2) Å, α = 92.089(1)°, β = 93.281(2)°, γ = 88.010(1)°, Z = 2, V = 293.47(1) Å3, Rwp = 4.83, GOF = 4.85. The double borate Na3Yb(BO3)2 congruently melted at 1119 °C exhibited a complex thermal profile, as evidenced by DSC, with four polymorphic transitions observed at 277 °C, 497 °C, 653 °C, and 694 °C. Ab initio calculated IR spectrum of Na3Yb(BO3)2, exhibited a high degree of agreement with the experimentally obtained IR spectrum. The band gap of the title compound was calculated to be 4.7(2) eV using the combination of the Tauc method and DASF method. The calculated energy barrier for sodium ion migration, equal to 0.5 eV, was in a reasonable agreement with the experimentally determined activation energy of 0.75 eV. The title compound exhibited an ionic conductivity of 0.4 × 10−3 S/cm at 1023 K.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107821"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149344","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}

引用次数: 0

Temperature-dependent photocatalytic activity and emergence of weak ferromagnetism in cobalt-incorporated ZnSe quantum dots

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2025.107827

Nur Jalal Mondal , Mritunjoy Prasad Ghosh , Rahul Sonkar , Samir Thakur , Eeshankur Saikia , Devasish Chowdhury

{"title":"Temperature-dependent photocatalytic activity and emergence of weak ferromagnetism in cobalt-incorporated ZnSe quantum dots","authors":"Nur Jalal Mondal , Mritunjoy Prasad Ghosh , Rahul Sonkar , Samir Thakur , Eeshankur Saikia , Devasish Chowdhury","doi":"10.1016/j.solidstatesciences.2025.107827","DOIUrl":"10.1016/j.solidstatesciences.2025.107827","url":null,"abstract":"<div><div>Impacts of reaction temperature on the photocatalytic effect of Co-doped ZnSe quantum dots (QDs) have been discussed thoroughly in this article. In this regard, CoxZn1-xSe (x = 0.00, 0.03, and 0.06 wt %) QDs were synthesized using a typical hydrothermal method to provide an easier, workable, affordable way to remove antibiotic pollutants from wastewater. Doping of magnetic impurities (Co2+ ions) in ZnSe QDs transformed the systems into diluted magnetic semiconductors and a signature of weak ferromagnetic behavior was registered at ambient temperature. Therefore, the genesis of weak ferromagnetism in doped systems has also been studied using DFT calculations to flourish their potential use for spintronic devices. Incorporation of cobalt ions introduced weak ferromagnetic signature at 300 K in doped ZnSe QDs, which is ascribed to the p-d hybridization as given by the DFT calculations. Photocatalytic degradation of ciprofloxacin (CIP) antibiotic agent was studied thoroughly by varying pH, temperature and the dosages of doped ZnSe nanocatalysts. It was found that 6 % cobalt-doped ZnSe QDs showed relatively better efficiency and rate constant in degrading CIP. With the increase in temperature (up to 70 °C), a significant increment in both the reaction rate and efficacy was observed for the highest Co-content ZnSe nanocatalysts. These results indicated that the photocatalytic efficiency of the catalyst was affected by the reaction temperature. It should be highlighted that cobalt-doped ZnSe QDs are qualified for efficient nanosized photocatalysts in addition to being competent dilute magnetic semiconductors.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107827"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149346","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}

引用次数: 0

Adsorption and reduction of Cr(VI) by C-P-O groups in biochar: Performance and mechanisms

IF 3.4 3区化学

Solid State Sciences Pub Date : 2025-02-01 DOI: 10.1016/j.solidstatesciences.2024.107815

Xian Xiao , Feiyan Zhou , Chenyu Yang , Lun Lu , Yuan Zhao , Baohua Tu , Liangzhong Li

{"title":"Adsorption and reduction of Cr(VI) by C-P-O groups in biochar: Performance and mechanisms","authors":"Xian Xiao , Feiyan Zhou , Chenyu Yang , Lun Lu , Yuan Zhao , Baohua Tu , Liangzhong Li","doi":"10.1016/j.solidstatesciences.2024.107815","DOIUrl":"10.1016/j.solidstatesciences.2024.107815","url":null,"abstract":"<div><div>Applying agricultural and industrial wastes into solid functional adsorbents for environmental remediation of heavy metal pollution remains a challenge. Herein, an efficient alkaline-pretreated H3PO4-modified cotton straw biochar (PCS) was developed to remove Cr(VI) by adsorption and reduction. Detailed characterization demonstrated that PCS has a substantial specific surface area (301.6 m2 g−1) and C-P-O groups (not in pristine biochar). Adsorption experiments were better described by pseudo-second-order and Langmuir model, which indicated that the adsorption followed the physicochemical diffusive monolayer adsorption mechanism. According to the alkaline extraction method and X-ray photoelectron spectroscope (XPS) analysis, the C-P-O groups on PCS participated in the adsorption of Cr(VI), converting 20.2 % of it to Cr(III). The remarkable adsorption capacity of PCS was 138.9 mg g−1, mainly attributed to pore filling, electrostatic attraction, complexation, and reduction. The PCS exhibited strong tolerance in common anionic and different water matrices and had the potential for practical application. The above findings can provide decision-making for the remediation of chromium-containing wastewater, as well as for the production of solid functional adsorbents in industry and agriculture.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"160 ","pages":"Article 107815"},"PeriodicalIF":3.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097741","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}

引用次数: 0