Materials Science and Engineering: B最新文献

{"title":"Design of ZnAl-layered double hydroxide-based composite through in situ growth of ZIF-67 for enhanced photocatalytic performance","authors":"Isna Nurmilatul Azizah,&nbsp;Widyan Muhammad Naufal,&nbsp;Sayekti Wahyuningsih,&nbsp;Witri Wahyu Lestari","doi":"10.1016/j.mseb.2026.119202","DOIUrl":"10.1016/j.mseb.2026.119202","url":null,"abstract":"<div><div>The design of heterojunction-based photocatalysts offers a promising way to enhance photocatalytic efficiency. This study focuses on synthesizing and characterizing a ZIF-67@mixed metal oxide (ZIF-67@MMO) composite to investigate the effect of ZIF-67 incorporation on its structural and optical properties. ZnAl-layered double hydroxide (ZnAl-LDH) was synthesized using the co-precipitation method with Zn/Al molar ratios of 2, 3, and 4, followed by calcination at 800 °C to obtain MMO. XRD analysis revealed that a Zn/Al ratio of 3 produced optimal ZnO and ZnAl₂O₄ spinel phases. ZIF-67, a cobalt-based metal-organic framework, was then grown in-situ on MMO surfaces with mass ratios of 5%, 10%, and 15%. Structural and optical characterizations confirmed that all composites retained their crystalline integrity while exhibiting reduced band gap energies, thereby improving light absorption and charge separation. The ZIF-67@MMO composites enhanced electron-hole transfer efficiency, resulting in superior photocatalytic activity. The MZ67–15% composite, with 15% ZIF-67 loading, achieved nearly complete degradation of the indigo carmine (IC) dye within 120 min, showing a first-order rate constant of 31.6 × 10⁻³ min⁻¹, 6.7 times higher than that of pure MMO. Therefore, surface modification of MMO with ZIF-67 via-in situ growth is an effective strategy to develop high-performance photocatalysts for dye degradation.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119202"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the uniformity of microcrystalline glass processing via magnetorheological polishing","authors":"Mingming Lu,&nbsp;Pengfei Xu,&nbsp;Jieqiong Lin,&nbsp;Yongsheng Du,&nbsp;Limin Zhang,&nbsp;Bowen Yang","doi":"10.1016/j.mseb.2025.119162","DOIUrl":"10.1016/j.mseb.2025.119162","url":null,"abstract":"<div><div>To address the challenge of achieving surface uniformity in microcrystalline glass magnetorheological polishing (MRP), this study proposes a method for predicting and evaluating surface uniformity based on the motion trajectories of abrasive particles. First, a mathematical model of abrasive particle trajectories was established based on kinematic principles. COMSOL magnetic field simulations defined the physical boundaries of the effective polishing zone under Halbach ring arrays. The coefficient of variation (Cv) of particle trajectory density was innovatively introduced as a new metric for quantifying trajectory uniformity. Second, the numerical simulation system reveals the influence mechanisms of three key process parameters-workpiece speed, polishing disc speed, and eccentricity-on surface uniformity: increasing workpiece speed extends the abrasive particle trajectory path but tends to cause trajectories to cluster toward the workpiece center; polishing disc speed significantly affects trajectory overlap rate and distribution range; reducing eccentricity promotes dense abrasive particle distribution in the workpiece center region, thereby enhancing overall uniformity. Through systematic optimization, the study identified the optimal parameter combination: workpiece speed of 700 r/min, polishing disc speed of 60 r/min, and eccentricity of 28.6 mm. At these settings, the simulated Cv value was minimized, and the abrasive particle trajectory distribution was most uniform. Experimental validation demonstrated that under different process parameters, the trends in the coefficient of variation (Cv) of workpiece surface roughness and surface light transmittance closely matched the simulated Cv trends, confirming the validity of the established model and simulation experiments.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119162"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145883447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low latency, electrically conductive path for low-power electronics, obtained by laser sintering of carbon-enhanced polypropylene composites","authors":"Elio Sarotto ,&nbsp;Alessandra Scidà ,&nbsp;Enrico Ferro Demarchi ,&nbsp;Alessandro Damin ,&nbsp;Gianluca Deninno ,&nbsp;Mauro Francesco Sgroi ,&nbsp;Julio Gomez ,&nbsp;Valentina Brunella ,&nbsp;Emanuele Treossi ,&nbsp;Vincenzo Palermo ,&nbsp;Antonino Veca ,&nbsp;Federico Cesano","doi":"10.1016/j.mseb.2026.119204","DOIUrl":"10.1016/j.mseb.2026.119204","url":null,"abstract":"<div><div>This study investigated the laser-induced fabrication of conductive pathways in a technical-grade polypropylene (PP) masterbatch containing glass fibers, hollow glass microspheres, and carbon black at 10, 20, and 0.4–0.5 wt%, respectively. Graphene nanoplatelets (GNPs) and graphene oxide (GO) nanosheets were synthesised and added to the masterbatch composition, as individual or combined fillers. GNP loadings in the resulting compounds were tuned to improve mechanical properties, but not to impart significant electrical conductivity in the resulting composite materials. The different loadings (2.5 wt% GNPs, 2.5 wt% GO or 2.5 wt% GO with 1.5 wt% GNPs, respectively) were confirmed in composition by thermogravimetric analysis (TGA). A beneficial effect of GNP and GO on the mechanical properties of the composite was confirmed using elongation and three-point flexural tests. Among the series of formulations, the PP composite loaded with 2.5 wt% GNPs exhibited the best mechanical properties and was selected for laser processing experiments. Laser scribing parameters, such as optical power (W) and scribing speed (mm/s), were found to significantly influence the morphology, composition, and electrical properties of laser-scribed paths. Lowest sheet resistance (0.3 Ohm/sq) values were achieved with high laser power and low writing speeds. Morphological, compositional, and structural analyses of the scribed paths were conducted using field-emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and micro-Raman spectroscopy. These analyses revealed that the scribed tracks were not homogeneous in composition, containing isolated graphene sheets and an accumulation layer of carbon black (CB) covering the entire irradiated path. Interestingly, the glass fibers and hollow glass microspheres provided a good support for the accumulation of carbon black along the laser irradiated paths. More interestingly, this accumulation layer of agglomerated CB was found to provide a continuous conductive network for effective electron transport. We also explored the capabilities of these laser-scribed tracks to transmit electrical signals, assessing their performance in comparison to standard USB cables. Our findings indicate that the laser-scribed tracks achieved comparable latency and data transfer rates to traditional USB cables. Moreover, no errors were observed during data transfer, and the phase correlation necessary for serial communication was preserved. These results demonstrate that laser-scribed tracks can reliably support data transfer operations, offering a simple route of embedding components through CO₂ laser irradiation processing. By laser-treating a rectangular area, we also fabricated a polymer-based electric heater with high thermal homogeneity and a linear voltage-temperature dependence.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119204"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gemini surfactant and L-tyrosine derived luminescent ionic liquid crystals for effective iodine capture","authors":"Muhammad Bilal Ahmad ,&nbsp;Rabia Arif ,&nbsp;Arifa Shaheen ,&nbsp;Ritu Bala","doi":"10.1016/j.mseb.2025.119174","DOIUrl":"10.1016/j.mseb.2025.119174","url":null,"abstract":"<div><div>In this study, luminescent ionic liquid crystals (ILCs) composed of a gemini surfactant (16-3-16) and an amino acid L-tyrosine (L-Tyr) were rationally designed and synthesized for the efficient removal of hazardous iodine. The structural and bonding features of the synthesized [16-3-16]∙2Tyr ILCs were confirmed using FT-IR, ¹H NMR, ¹³C NMR, mass spectral, SAXS and XRD techniques. Confocal laser scanning microscopy (CLSM) and dynamic light scattering (DLS) revealed that the synthesized ILCs in aqueous solution exhibit strong green luminescence and self-assemble into multilayers and vesicles. The photoluminescence (PL) quantum yield of the [16-3-16]∙2Tyr ILCs was found to be 32.51 %. These ILCs exhibited exceptional iodine adsorption capacities of 3.29 ± 0.12 g g⁻¹ in the vapour phase and 1.728 ± 0.09 g g⁻¹ in solution. The adsorption kinetics follow a pseudo-second-order model, and the thermodynamic analysis confirms that the process is endothermic in nature. Remarkably, the material retained its performance over five reuse cycles following simple ethanol washing. The adsorption mechanism was elucidated through FT-IR, Raman spectroscopy, XPS and SEM-EDX techniques. The results suggest that iodine capture is primarily driven by charge transfer and strong acid-base interactions, facilitated by the aromatic nature of the ILCs, which enables the formation of stable iodine–π complexes. This study presents an innovative and recyclable ILC-based system for capturing iodine, offering a promising approach for environmental remediation applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119174"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetostructural properties of rare earth substituted strontium hexaferrites","authors":"M.F. Ramírez-Ayala ,&nbsp;A. Lobo Guerrero ,&nbsp;Umapada Pal ,&nbsp;J.L. Pérez-Mazariego ,&nbsp;J. León-Flores ,&nbsp;M.L. Marquina ,&nbsp;F.R. Barrientos Hernández","doi":"10.1016/j.mseb.2026.119179","DOIUrl":"10.1016/j.mseb.2026.119179","url":null,"abstract":"<div><div>M-type strontium hexaferrites, with partial substitution of Sr²⁺ by rare earth ions (RE³⁺ = La, Pr, Nd, Sm and Gd) were synthesized via the Pechini method, following the formula Sr_1-xRE_xFe₁₂O₁₉ (0.01 ≤ x ≤ 0.1). The influence of rare earth substitution on the structural, vibrational, and magnetic properties was systematically investigated using X-ray diffraction (XRD), Scanning electron microscopy, Fourier-transform infrared spectroscopy (FTIR), Vibrant sample magnetometry, and Mössbauer spectroscopy. XRD analysis confirmed the formation of a single-phase hexagonal M-type ferrite. Even at low RE³⁺ concentrations, notable variations were observed in lattice parameters. FTIR analysis revealed outstanding changes in metal‑oxygen stretching vibrations, particularly at tetrahedral sites, indicating the incorporation of rare earth ions. Mössbauer spectroscopy further confirmed RE incorporation and revealed notable alterations in hyperfine parameters at the 4f₁, 4f₂, and 2a sites, indicating changes in the local electronic and magnetic environments of Fe nuclei. In addition, morphology and magnetic properties were evaluated as a function of the rare earth substitution, highlighting the critical role of RE³⁺ dopants in tailoring the structural and magnetic behavior of strontium hexaferrites.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119179"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boron-induced amorphization in In2O3 enabling flexible transparent conductive films","authors":"Shun Mori,&nbsp;Yuya Yasaki,&nbsp;Kanta Kibishi,&nbsp;Shinya Aikawa","doi":"10.1016/j.mseb.2026.119201","DOIUrl":"10.1016/j.mseb.2026.119201","url":null,"abstract":"<div><div>We investigated the effects of boron concentration and post-deposition annealing temperature on the electrical properties of indium boron oxide (IBO), demonstrating a high-performance transparent conducting oxide film that rivals indium tin oxide (ITO), even when deposited at room temperature without any post-deposition annealing. Optimal performance was obtained at a boron content of 2.5 at.%, yielding a resistivity of 3.6 × 10⁻⁴ Ω cm, Hall mobility of 47.2 cm² V⁻¹ s⁻¹, and carrier density of 3.6 × 10²⁰ cm⁻³. Although the carrier concentration was comparable to that of non-doped In₂O₃, the mobility was notably enhanced. This improvement is attributed to the fact that boron, having the same valence as indium, does not introduce excess carriers, while its smaller ionic radius enhances the overlap of In 5 <em>s</em> orbitals, facilitating more efficient carrier transport. Because IBO is compatible with room-temperature processing, films were also deposited on poly(ethylene terephthalate) substrates to evaluate their potential as flexible transparent conductors in comparison with ITO. The increase in resistance under mechanical bending was less than one-third that of ITO, suggesting superior mechanical durability for IBO. This difference may originate from the highly amorphous nature of the IBO film. Furthermore, nanoindentation measurements revealed Young's moduli of 70.0 and 130.8 GPa for IBO and ITO, respectively, indicating that amorphous IBO possesses high mechanical flexibility, consistent with the bending resistance test results.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119201"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable biochar-MOF composites for the removal of tetracycline: Insights into batch and continuous studies","authors":"Pooja Saini ,&nbsp;Nandana Chakinala ,&nbsp;Meena Chowdhary ,&nbsp;Praveen K. Surolia ,&nbsp;Anand Gupta Chakinala","doi":"10.1016/j.mseb.2025.119150","DOIUrl":"10.1016/j.mseb.2025.119150","url":null,"abstract":"<div><div>This study focuses on the development of advanced biochar-based composite materials for the efficient removal of tetracycline (TC) from aqueous systems. Bread waste was repurposed as a sustainable biomass source to produce biochar, which was further modified with ZIF-67, a cobalt-based metal-organic framework (MOF), to enhance its adsorption performance. Two synthesis routes were employed: direct calcination to produce non-activated biochar (NAC) and chemical activation with potassium carbonate to produce activated biochar (AC). Batch adsorption studies revealed that NAC-30MOF exhibited the highest adsorption capacity, achieving nearly 100 % TC removal with a maximum capacity of 2033 mg⋅g⁻¹ and a BET surface area is 514.78 m²⋅g⁻¹ with a pore size of 3.83 nm. Adsorption kinetics were best described by the pseudo-second-order model (R² = 0.995), indicating chemisorption as the dominant mechanism. Thermodynamic analysis confirmed the endothermic and spontaneous nature of the adsorption process, with positive enthalpy (ΔH°) and entropy (ΔS°) values. Column studies demonstrated the superior performance of NAC-30MOF, with longer breakthrough and exhaustion times compared to AC and NAC, highlighting its potential for continuous water treatment applications. Additionally, NAC-30MOF retained excellent reusability, maintaining nearly 100 % removal efficiency over three adsorption-desorption cycles. This work highlights the effectiveness of MOF-modified biochar composites, particularly NAC-30MOF, as cost-effective and sustainable adsorbents for water treatment. The integration of biochar with MOFs significantly enhances adsorption capacity and efficiency, offering a promising approach to the development of advanced materials for environmental remediation.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119150"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling broadened spectral response in 2D quantum dot solar cells via Sb2Se3/CaZrS3 dual chalcogenide absorbers: Insights from SCAPS-1D","authors":"Smriti Baruah ,&nbsp;Janmoni Borah","doi":"10.1016/j.mseb.2026.119216","DOIUrl":"10.1016/j.mseb.2026.119216","url":null,"abstract":"<div><div>This work presents an optimized dual chalcogenide perovskite absorber-based quantum dot solar cell (QD-CPSC) configuration, emphasizing the impact of bandgap engineering, layer thickness, dopant concentration, and defect density on both absorbers and quantum dot charge collection layers. Antimony Selenide (Sb₂Se₃) and Calcium Zirconium Trisulfide (CaZrS₃) absorbers were coupled with two-dimensional (2D) quantum dot Tungsten disulfide (WS₂), Copper Oxide (Cu₂O), and Molybdenum oxide (MoO_x) quantum dot electron and hole collection layers, achieving ideal energy band alignment that enhances optoelectronic conversion efficiency (OECE) and broadens spectral response. At a cumulative dual absorber width of 1.2 μm, 0.01 μm for each quantum dot charge collection layer, and uniform defect density of 10¹⁶ cm⁻³, the proposed FTO/WS₂/CaZrS₃/Sb₂Se₃/Cu₂O/MoOx/Au dual absorber device configuration attains a peak optoelectronic conversion (OECE) of 33.16%, short circuit current density (<em>J</em>_sc) of 34 mA/cm², open circuit voltage (<em>V</em>_oc) of 1.36 V and fill factor (<em>FF</em>) of 86%.This surpasses the 13.1% and 27% of OECE,11.5 mA/cm² and 31.5 mA/cm² of <em>J</em>_sc, 1.36 V and 1.046 V of <em>V</em>oc 83.8% and 84% of <em>FF</em> attained by CaZrS₃ and Sb₂Se₃ single-absorber counterparts. The proposed dual-absorber QD- CPSC extends the spectral response to 1100 nm with 90% quantum efficiency, outperforming the CaZrS₃ single-absorber chalcogenide solar cell (CSC) limit of 700 nm. While Sb₂Se₃ single-absorber CPSC achieves a comparable spectral range to the proposed dual absorber configuration, its quantum efficiency is lower at 55.5%. Temperature-dependent analyses revealed exceptional thermal stability, preserving its efficiency up to 31% even under elevated temperatures of 400 K.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119216"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Bi/V ratio in the precursor on structural, optical, and photovoltaic properties of bismuth vanadium oxide thin films by spin coating","authors":"Dev Bahadur Khadka ,&nbsp;Suresh Sagadevan ,&nbsp;Md Arif Ul Islam ,&nbsp;Shinya Kato ,&nbsp;Tetsuo Soga","doi":"10.1016/j.mseb.2026.119231","DOIUrl":"10.1016/j.mseb.2026.119231","url":null,"abstract":"<div><div>Bismuth vanadate (BiVO₄) is an n-type semiconductor of bismuth-based oxide perovskite nature, characterized by a relatively low bandgap of (2.2–2.5) eV. This material is primarily explored in photoanodes, electrodes, and photocatalysis phenomena. Nanostructures, greater availability, and a stable nature of BiVO₄ have been demonstrated significantly in recent studies. The surface morphology, structure, optical properties, and electrical properties are considered for the effect of the bismuth to vanadium ratio in the precursor solutions. A simple and time-efficient spin coating at a moderate speed was used to synthesize the thin films. In our study, a low Bi/V ratio results in a single layer of BiVO₄; however, a higher Bi/V ratio exhibits a heterostructure of BiVO₄ and Bi₄V₂O₁₁ by a single spin coating.Further increasing the Bi/V ratio yields almost a single layer of Bi₄V₂O₁₁. The open circuit voltage is increased from 0.39 V at the single-phase BiVO₄ to nearly twofold, 0.63 V with BiVO₄/Bi₄V₂O₁₁ heterostructure due to ferroelectric properties. Interestingly, the existence of BiVO₄ on Bi₄V₂O₁₁ promoted an additional voltage to the open circuit voltage, exhibiting a small remanent voltage.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119231"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comments on “tuning electrical conductivity in lithium-doped sodium titanate via sonochemical synthesis”","authors":"Tosapol Maluangnont","doi":"10.1016/j.mseb.2026.119218","DOIUrl":"10.1016/j.mseb.2026.119218","url":null,"abstract":"<div><div>da Silva et al. (Mater. Sci. Eng. B 323 (2026) 118836) recently reported the sonochemical synthesis of lithium-doped sodium titanate Na_2-xLi_xTi₃O₇ (x = 0, 0.01, 0.02 and 0.03). They proposed three-phase products: (i) lithium-doped Na_2-xLi_xTi₃O₇ with the layered structure, (ii) undoped Na₂Ti₆O₁₃ with tunnel structure, and (iii) the NaLiTi₃O₇ impurity (at high <em>x</em>). It is argued that that the formation of Na_2-xLi_xTi₃O₇ is unlikely. Two major products could be assigned as undoped Na₂Ti₃O₇ and undoped Na₂Ti₆O₁₃. Also, the NaLiTi₃O₇ impurity (which has completely different structure from the layered alkali titanate) could be the structurally related Li₄Ti₅O₁₂ spinel. The present interpretation can explain the invariant unit cell parameters, the decrease of optical band gap, and the improvement of electrical conductivity observed by the original authors.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"326 ","pages":"Article 119218"},"PeriodicalIF":4.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}