Progress in Solid State Chemistry最新文献

{"title":"Boosting the phosphorus uptake of La2(CO3)3·8H2O based adsorbents via sodium addition: Relationship between crystal structure and adsorption capacity","authors":"Zuo-Bei Wang ,&nbsp;Xin Ye ,&nbsp;Jie Yang ,&nbsp;Yong-Hui Zhang ,&nbsp;Zi-Ang Nan ,&nbsp;Yi-Fan Wang ,&nbsp;You-Gui Huang ,&nbsp;Wei Wang","doi":"10.1016/j.progsolidstchem.2024.100496","DOIUrl":"10.1016/j.progsolidstchem.2024.100496","url":null,"abstract":"<div><div>Excess phosphate contents in water bodies triggers eutrophication, which posts significant challenges to the aquatic ecosystem. Lanthanum-carbonate based adsorbents exhibit excellent phosphate binding properties for remediating eutrophication. However, they suffer from significant adsorption-capacity loss (&gt;85 %) at high pH. Little has been done on understanding this behavior for improving the phosphorus adsorption of lanthanum-carbonate adsorbents in alkaline environments (<em>e.g.</em> eutrophic water bodies). Here, we discover that La₂(CO₃)₃·8H₂O, when produced by a conversion reaction from NaLa(CO₃)₂·xH₂O, exhibits high phosphate adsorption capacity in a wide pH window. Under alkaline conditions (<em>e.g.</em> pH = 10), its adsorption capacity decreases by only 8 % compared to the value under neutral pH. By isolating three different lanthanum-carbonate based compounds and analyzing their molecular structures, we find that the trace amount of Na⁺ residual in our La₂(CO₃)₃·8H₂O alters the chemical environment surrounding the La³⁺ ions, which may significantly boost the phosphate uptake at high pH. Our results provide molecular insights for further tuning the material structure of phosphate adsorbents to achieve robust performances.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"76 ","pages":"Article 100496"},"PeriodicalIF":9.1,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of Sr-substituted Ba1-xSrx(Zn1/3Nb2/3)O3 complex perovskites: Structural, electrical and electrochemical properties","authors":"Y. Feng ,&nbsp;K.B. Tan ,&nbsp;S.K. Chang ,&nbsp;Y. Sulaiman ,&nbsp;H.N. Lim ,&nbsp;M. Lu ,&nbsp;Y. Wang","doi":"10.1016/j.progsolidstchem.2024.100495","DOIUrl":"10.1016/j.progsolidstchem.2024.100495","url":null,"abstract":"<div><div>Herein we report the structural, dielectric and electrochemical properties of Ba_1-xSr_x(Zn_1/3Nb_2/3)O₃ (BSZN, 0 ≤ x ≤ 1) solid solution synthesised by solid-state reaction. A complete substitutional solid solution was obtained, wherein the BSZN cubic perovskites of the space group of <em>Pm</em> <span><math><mrow><mover><mn>3</mn><mo>‾</mo></mover></mrow></math></span> <em>m</em> were obtained at x ≤ 0.6 while the pseudo-cubic phases were discernible at x &gt; 0.6. The nano-sized crystallites, as determined by both Scherrer and Williamson-Hall analyses, supported the claim of large polyhedral grains of 0.1–0.3 μm by FE-SEM. Both <em>ε</em>′ and tan δ were found to vary consistently with increasing dopant concentration, except for an anomalous observation for the composition, x = 0.6 with the lowest tan δ of 0.0783 and the highest <em>ε</em>′ of 27.5. Such phenomenon could be attributed to the combined effects of larger grain size, higher relative density and stronger polarisation per molar volume. The impedance analysis revealed that these BSZN perovskites were of the negative temperature coefficient of resistance (NTCR) type. The combined plots of imaginary modulus (<em>M</em>″) and impedance (<em>Z</em>″) against frequency showed the short-range movement of localised charge carriers, suggesting a non-Debye-type relaxation process.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"76 ","pages":"Article 100495"},"PeriodicalIF":9.1,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New solid solutions with the R-type hexaferrite structure, BaFe4-xMxM’2O11 (M = In, Sc; M’ = Ti, Sn)","authors":"Yu-An Huang ,&nbsp;Jun Li ,&nbsp;Arthur P. Ramirez ,&nbsp;M.A. Subramanian","doi":"10.1016/j.progsolidstchem.2024.100494","DOIUrl":"10.1016/j.progsolidstchem.2024.100494","url":null,"abstract":"<div><div>Hexaferrites are a family of complex iron oxides with hexagonal structures. Novel compositions with the <em>R</em>-type hexaferrite structure, BaFe_4-<em>x</em><em>M</em>_<em>x</em><em>M’</em>₂O₁₁ (<em>M</em> = In, Sc; <em>M’</em> = Ti, Sn; <em>x</em> = 0.0–1.8), are synthesized and characterized. Structural analyses using powder neutron diffraction reveal that trivalent iron cations are distributed among all the available <em>M</em> sites (octahedral and trigonal bipyramidal sites), with site preference varying with the composition. Ferrimagnetic behavior is observed for all the compounds, and the observed magnetic hysteresis loop indicates that the compounds are soft magnets. The color of the new solid solution can be tuned from dark reddish brown to reddish-orange and yellowish-orange as In or Sc substitutions increase. The origin of colors in these ferrite-based solid solutions results from the combination of ligand-to-metal charge transfer and electron-pair transitions across the face-shared octahedra, as seen in the hematite (Fe₂O₃). Reducing Fe content in the parent compound improves the diffuse reflectance in the near-infrared range, suggesting potential applications as cool pigments.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"76 ","pages":"Article 100494"},"PeriodicalIF":9.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel Mn5+-activated Ba2TiO4 phosphor emitting in the second near-infrared biological window","authors":"Hang Zhao ,&nbsp;Xin Xin ,&nbsp;Liangsheng Tian ,&nbsp;Theeranun Siritanon ,&nbsp;Suwit Suthirakun ,&nbsp;Wongsathorn Kaewraung ,&nbsp;Menghang Qi ,&nbsp;Ruoxiu Xiao ,&nbsp;Jingyi Ren ,&nbsp;Peng Jiang","doi":"10.1016/j.progsolidstchem.2024.100493","DOIUrl":"10.1016/j.progsolidstchem.2024.100493","url":null,"abstract":"<div><div>In recent years, second near-infrared window emitting phosphors have gained widespread research interest due to their excellent tissue penetration and high imaging accuracy. In this work, a new type of Ba₂Ti_1-<em>x</em>Mn_<em>x</em>O_{4+<em>x</em>/2} (0.02 ≤ <em>x</em> ≤ 0.10) phosphors were successfully prepared by high-temperature solid-phase method and their potential in luminescence thermometry is evaluated. PL and PLE spectral analysis prove that the optimal Mn doping concentration is <em>x</em> = 0.03. The as-synthesized phosphors exhibit a broad excitation band of 550–1000 nm and a narrow emission band of 1170–1220 nm. The electronic structures of the original Ba₂TiO₄ and Mn-doped Ba₂TiO₄ were calculated and analyzed using the DFT + U method, which facilitates a better understanding of the impact of Mn doping on the luminescent properties of Ba₂TiO₄. The luminescence decay lifetime is measured to be 101.44 μs at room temperature, which is a giant enhancement compared to conventional nanosecond lifetime phosphor, indicating a progress in imaging accuracy. In addition, the as-synthesized phosphors maintain over 75 % of the maximum luminescence intensity within the physiological temperature range. The potential applications in luminescence temperature measurement were also analyzed by the LIR ratio method, and the relative sensitivity could reach 2.31 %K⁻¹ at 283 K, which is a relatively high value in the second near-infrared window. Therefore, the as-synthesized Ba₂Ti_1-<em>x</em>Mn_<em>x</em>O_{4+<em>x</em>/2} (0.02 ≤ <em>x</em> ≤ 0.10) phosphors demonstrate great potential in NIR applications such as biological imaging and luminescent thermometry.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"76 ","pages":"Article 100493"},"PeriodicalIF":9.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From layered 2D carbon to 3D tetrahedral allotropes C12 and C18 with physical properties related to diamond: Crystal chemistry and DFT investigations","authors":"Samir F. Matar","doi":"10.1016/j.progsolidstchem.2024.100492","DOIUrl":"10.1016/j.progsolidstchem.2024.100492","url":null,"abstract":"<div><div>Mechanisms of changes from 2D to 3D (D = dimensionality) involving 2D C(sp²) trigonal paving to C(sp³) tetrahedral stacking are proposed through puckering of the 2D layers on one hand and interlayer insertion of extra C on the other hand. Such transformations, led to 3D hexagonal C₁₂ and C₁₈ allotropes respectively characterized by <strong>lon</strong> and <strong>bac</strong> topologies. Using density functional theory DFT calculations, the two allotropes were found cohesive and stable both mechanically (elastic properties) and dynamically (phonons). Comparisons of the physical properties with known <strong>uni</strong> C₆ were established letting identify ranges of large Vickers hardness: H_V (<strong>uni</strong> C₆) = 89 GPa, H_V (<strong>lon</strong> C₁₂) = 97 GPa, and H_V (<strong>bac</strong> C₁₈) = 70 GPa. Whilst C₆ was identified with acoustic phonons instability, C₁₂ and C₁₈ were found stable dynamically throughout the acoustic and optic frequency ranges. Furthering on the thermal properties the allotropes were characterized with a temperature dependence curve of the specific heat C_V close to experimental data of diamond with best fit for novel C₁₈. The electronic band structures reveal a small band gap of 1 eV for <strong>uni</strong> C₆ and larger direct band gap of 3 eV for the two other 3D allotropes. Such modulations of the electronic and physical properties should open scopes of carbon research.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"76 ","pages":"Article 100492"},"PeriodicalIF":9.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into the structure and polymerization mechanisms of CO molecules under pressure","authors":"Xiuyuan Li ,&nbsp;Zihuan Peng ,&nbsp;Chongwen Jiang ,&nbsp;Nan Li ,&nbsp;Jun Zhang ,&nbsp;Changqing Jin ,&nbsp;Chuan Xiao","doi":"10.1016/j.progsolidstchem.2024.100491","DOIUrl":"10.1016/j.progsolidstchem.2024.100491","url":null,"abstract":"<div><div>High pressure technique can greatly enrich the chemistry research by innovating the traditional research paradigm. Recently, tremendous attentions have been paid to the high-pressure behavior of low-Z molecules, such as CO, CO₂, N₂, O₂ and mixtures. These molecules tend to polymerize into extended solids at the pressure of 1–100 GPa, but the structures and polymerization mechanisms are still poorly understood. Herein, as a research model, high pressure polymerization process of carbon monoxide (CO) is studied in detail both experimentally and theoretically. The in-situ Raman spectra and angle-resolved X-ray diffraction experiments prove the successful synthesis of p-CO and its amorphous structure. The theoretical simulations reveal that two CO molecules dimerize into the ethylenedione (OCCO) diradical with spin-polarized singlet state firstly, then the OCCO diradical induces the subsequent chain elongation, ring closure and chain crosslinking reactions, leading to formation of the amorphous 3D network. The multiple basic units, hybrid coordination of C/O atoms and complex connecting styles in p-CO are revealed. Based on the polymerization mechanisms, the fundamental principles governing the character (amorphous or crystalline) of extended solids under high pressure are elucidated. Due to the small dipole moment and the head-to-tail disorder of CO molecules, it is reasonable to speculate that crystalline p-CO may exist under more rigorous conditions than 110 GPa and 2000 K, at which the isoelectronic nitrogen (N₂) molecules polymerize into a single-bonded cubic form of nitrogen. Our study provides a profound insight into the polymerization mechanism and structures of low-Z CO molecules under compression, contributes to the diversified chemical researches and has a generally scientific implications for the interior dynamics of planets.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"76 ","pages":"Article 100491"},"PeriodicalIF":9.1,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The emergence of chalcogenides: A new era for thin film solar absorbers","authors":"Devika Rajan Sajitha ,&nbsp;Beauno Stephen ,&nbsp;Atsushi Nakamura ,&nbsp;Manickam Selvaraj ,&nbsp;Shyju Thankaraj Salammal ,&nbsp;Shamima Hussain","doi":"10.1016/j.progsolidstchem.2024.100490","DOIUrl":"10.1016/j.progsolidstchem.2024.100490","url":null,"abstract":"<div><div>This paper aims to provide a comprehensive overview of the recent advancements in chalcogenide-based solar absorber materials and their potential to revolutionize solar energy conversion. Researchers are focused on chalcogenide materials due to their distinctive properties, aiming to harness solar energy efficiently in response to the increasing demand for sustainable energy sources. The application of chalcogenide absorbers with zinc blende and chalcopyrite structures, such as CdTe and Cu(In, Ga)Se₂ (CIGSe) has resulted in considerable advances in thin film photovoltaic performance at both the laboratory and commercial scales. However, concerns persist about toxicity and the scarcity of constituent elements in CIGSe/CdTe absorbers remains. Cu₂ZnSn(S, Se)₄ (CZTS, Se) materials based on the kesterite structure have emerged as appealing alternatives, promising non-toxicity and an abundance of constituent metals. CZTS, Se solar cells have a lower record power conversion efficiency of 14.9 % when compared to CIGSe (22.6 %), CdTe (22.1 %), and CIS (20 %) devices. This research highlights the emergence of chalcogenides as a promising material class for flexible thin-film solar absorbers.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"76 ","pages":"Article 100490"},"PeriodicalIF":9.1,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142421712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in the development of polyoxometalates and their composites for the degradation of toxic chemical dyes","authors":"Gajiram Murmu ,&nbsp;Tamanna Harihar Panigrahi ,&nbsp;Sumit Saha","doi":"10.1016/j.progsolidstchem.2024.100489","DOIUrl":"10.1016/j.progsolidstchem.2024.100489","url":null,"abstract":"<div><p>Polyoxometalates (POMs) and their composites have emerged as promising candidates for degrading toxic chemical dyes in wastewater remediation. POMs, with their tunable structures and redox properties, exhibit high catalytic activity towards various organic pollutants, including dyes. The integration of POMs into composite materials creates a synergistic effect that enhances endurance and efficiency during dye degradation. POMs are classified based on metal composition and structure, highlighting their roles in dye removal processes. Categories include molybdenum-based, tungsten-based, vanadium-based, and mixed metal-based POMs, each with distinct properties affecting dye elimination efficacy. The application of POMs and their composites in degrading specific chemical dyes, including cationic, anionic, and azo dyes, is elaborately described. Various mechanisms for dye removal from aqueous media, such as photocatalysis, adsorption, Fenton-like reactions, and electrochemical processes, underscore the crucial role of POMs and their composites in toxic chemical dye degradation. The factors influencing dye-POM interactions, such as pH, temperature, POM composition, and dye structure, are analyzed to understand their impact on removal efficiency. The review discusses the influence of metal type, POM structure, and solution conditions on dye removal efficacy, providing insights into how specific metal-based POMs interact with different dye molecules. Challenges and future perspectives for implementing POM-based materials in dye wastewater treatment are outlined, emphasizing the need for further research to optimize performance and ensure practical feasibility in large-scale applications.</p></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"76 ","pages":"Article 100489"},"PeriodicalIF":9.1,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142239249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impeding conduction by breaking the charge carrier hopping in charge-ordered perovskite BaBiO3 (BaBi0.53+Bi0.55+O3): Experimental and theoretical electronic structural correlations","authors":"L. Gowsalya ,&nbsp;C. Jesica Anjeline ,&nbsp;P. Devi ,&nbsp;P. Murugan ,&nbsp;N. Lakshminarasimhan","doi":"10.1016/j.progsolidstchem.2024.100478","DOIUrl":"10.1016/j.progsolidstchem.2024.100478","url":null,"abstract":"&lt;div&gt;&lt;p&gt;&lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mtext&gt;BaBi&lt;/mtext&gt;&lt;msub&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; (BBO), a charge-ordered perovskite with mixed-valent states of Bi (Bi&lt;sup&gt;3+&lt;/sup&gt; and Bi&lt;sup&gt;5+&lt;/sup&gt;), is known for its charge density wave (CDW) semiconducting and topological insulating properties. BBO has been extensively investigated for its superconducting, electrical, and photocatalytic properties. The present study aims to understand the alterations in the CDW and electronic properties of &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mtext&gt;Ba&lt;/mtext&gt;&lt;msubsup&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mrow&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msub&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; by valence-selective substitution of Bi&lt;sup&gt;3+&lt;/sup&gt; and Bi&lt;sup&gt;5+&lt;/sup&gt; with La&lt;sup&gt;3+&lt;/sup&gt; and Nb&lt;sup&gt;5+&lt;/sup&gt;, respectively, in the solid solutions &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mtext&gt;Ba&lt;/mtext&gt;&lt;msubsup&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;mrow&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mi&gt;x&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mtext&gt;La&lt;/mtext&gt;&lt;mi&gt;x&lt;/mi&gt;&lt;/msub&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;/mrow&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mrow&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msub&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mtext&gt;Ba&lt;/mtext&gt;&lt;msubsup&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;mrow&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mi&gt;y&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msub&gt;&lt;mtext&gt;Nb&lt;/mtext&gt;&lt;mi&gt;y&lt;/mi&gt;&lt;/msub&gt;&lt;msub&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; (x = y = 0.0, 0.1, 0.3, and 0.5). The samples synthesized &lt;em&gt;via&lt;/em&gt; high-temperature solid-state reaction method were characterized by powder X-ray diffraction and various spectroscopic techniques (FT-IR, Laser Raman, EPR, XPS, and UPS). Impedance analysis revealed an upsurge in total impedance with the substitution of Bi&lt;sup&gt;3+&lt;/sup&gt;/Bi&lt;sup&gt;5+&lt;/sup&gt; by La&lt;sup&gt;3+&lt;/sup&gt;/Nb&lt;sup&gt;5+&lt;/sup&gt; indicating the blocking of electron/hole hopping by disruption of the charge ordering of redox pair Bi&lt;sup&gt;3+&lt;/sup&gt; and Bi&lt;sup&gt;5+&lt;/sup&gt;. The valence-selective substitution of Bi&lt;sup&gt;3+&lt;/sup&gt;/Bi&lt;sup&gt;5+&lt;/sup&gt; in BaBiO&lt;sub&gt;3&lt;/sub&gt; resulted in an alteration of the electronic structure and changes in the bandwidth of &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mtext&gt;Ba&lt;/mtext&gt;&lt;msubsup&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;mrow&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mi&gt;x&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mtext&gt;La&lt;/mtext&gt;&lt;mi&gt;x&lt;/mi&gt;&lt;/msub&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;/mrow&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mrow&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msub&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mtext&gt;Ba&lt;/mtext&gt;&lt;msubsup&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mrow&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mtext&gt;Bi&lt;/mtext&gt;&lt;mrow&gt;&lt;mn&gt;0.5&lt;/mn&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mi&gt;y&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;5&lt;/mn&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msub&gt;&lt;mtext&gt;Nb&lt;/mtext&gt;&lt;mi&gt;y&lt;/mi&gt;&lt;/msub&gt;&lt;msub&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; (x = y = 0.0, 0.1, 0.3, and 0.5) solid solutions, which ","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"76 ","pages":"Article 100478"},"PeriodicalIF":9.1,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unusual Tm3+ sensitization-induced white-emitting and thermostable improvement in Ba2Y2Ge4O13:Dy3+ phosphor for solid-state lighting and optical thermometry","authors":"Huan Tang,&nbsp;Xiaoyang Zhao,&nbsp;Yue Qin,&nbsp;Shanlin Liu,&nbsp;Hongzhi Zhang,&nbsp;Hong Li,&nbsp;Conglin Liu,&nbsp;Jing Zhu","doi":"10.1016/j.progsolidstchem.2024.100477","DOIUrl":"10.1016/j.progsolidstchem.2024.100477","url":null,"abstract":"<div><p>Currently, the development of single-phase white emitters is an interesting research topic. Researchers have paid much attention to tune white-emitting of Dy³⁺-activated phosphors via Tm³⁺ sensitization strategy. However, the role of Tm³⁺ sensitization on luminescence thermostability was usually underestimated. Herein, color-tunable germanate phosphors Ba₂Y₂Ge₄O₁₃ (BYGO):Tm³⁺,Dy³⁺ were prepared. The white light emission is achieved due to the effective energy transfer from Tm³⁺ to Dy³⁺. A BYGO:Tm³⁺,Dy³⁺-based w-LED exhibits warm white-emitting. Moreover, the back-energy transfer of Dy³⁺→Tm³⁺ contributes to the improvement of luminescence thermal stability. Meanwhile, the difference of temperature-dependent Tm³⁺ and Dy³⁺ emissions realizes satisfactory temperature sensing properties. This work provides a deep understanding for the role of Tm³⁺ sensitization strategy on color tuning and thermostable improvement, promoting multifunctional utilizations of Dy³⁺-activated phosphors.</p></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"75 ","pages":"Article 100477"},"PeriodicalIF":9.1,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142097276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}