Ceramics International最新文献

{"title":"Preparation and regulation of highly adsorptive ceramic fiber cotton-reinforced porous silica aerogel composites for emulsion separation","authors":"Dongmei Jiang,&nbsp;Yaru Li,&nbsp;Xiaomei Wang,&nbsp;Yuchen Li,&nbsp;Fei Yan,&nbsp;Haixia Li,&nbsp;Hongtao Liu","doi":"10.1016/j.ceramint.2026.07.324","DOIUrl":"10.1016/j.ceramint.2026.07.324","url":null,"abstract":"<div><div>The porous structure of silica aerogels is crucial for their application in emulsion separation. In this study, to overcome the high brittleness of aerogels, ceramic fiber (CF) cotton was simply incorporated to prepare CF-reinforced silica aerogels via a sol-gel method. This modification enhanced the physical entanglement of the aerogel matrix, thereby significantly improving its mechanical strength to 29.83 KPa, which was 5.7 times that of the pure silica aerogel control group. Meanwhile, the CF/silica aerogel composite with a CF loading of 2.0 wt% exhibited excellent and stable adsorption capacity for five types of oil phases. It maintained a stable adsorption capacity of 6.8–7.0 g/g for soybean oil over a wide pH range of 2–10. Owing to its outstanding hydrophobicity with a water contact angle (WCA) greater than 150°, the composite achieved a separation efficiency of over 90% for n-hexane-in-water emulsions. These results demonstrate that the as-prepared CF/silica aerogel composite holds great potential for practical applications in oil-water separation.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 44440-44450"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, optical, and spectroscopic properties of Pr3+-doped calcium boroaluminate glasses","authors":"B.G. de Lima Moura,&nbsp;O.C. Silva Neto,&nbsp;A.M.O. Lima,&nbsp;T.A. Lodi,&nbsp;A.S.S. de Camargo,&nbsp;A. Steimacher,&nbsp;M.J. Barboza","doi":"10.1016/j.ceramint.2026.07.325","DOIUrl":"10.1016/j.ceramint.2026.07.325","url":null,"abstract":"<div><div>Calcium boroaluminate (CaBAl) glasses doped with Pr₆O₁₁ (0.25–2.0 wt%) were synthesized by melt-quenching to investigate the influence of Pr³⁺ incorporation on their structural and optical properties. XRD confirmed the fully amorphous nature of all compositions, while FTIR analysis indicated that Pr³⁺ incorporation does not significantly alter the glass network connectivity. Optical absorption revealed characteristic 4<em>f</em>–4<em>f</em> transitions of Pr³⁺ ions, with efficient excitation at 444 nm (³H₄→³P₂). Intense orange emission centered at 601 nm (¹D₂→³H₄) was observed, with maximum intensity at 1.5 wt% Pr₆O₁₁. Higher concentrations led to concentration quenching accompanied by a reduction in lifetime from 27 to 15 μs. The correlation between lifetime shortening, reduced interionic distance, and spectral overlap confirms the role of cross-relaxation and resonant energy transfer mechanisms. These results highlight Pr³⁺-doped CaBAl glasses as promising candidates for orange-emitting photonic devices. The combined structural–spectroscopic approach adopted here provides deeper insight into concentration-dependent energy transfer processes in Pr³⁺-doped borate-based glasses.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 44451-44460"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and fabrication of an ultrathin K-shaped high temperature resistance metamaterial coating with enhanced broadband microwave absorption","authors":"Meidi Chu,&nbsp;Deliang Yi,&nbsp;Hong Li,&nbsp;Yunhui Xiang,&nbsp;Wenjuan Liu,&nbsp;Sha Zou,&nbsp;Yaran Niu,&nbsp;Xuebin Zheng","doi":"10.1016/j.ceramint.2026.07.418","DOIUrl":"10.1016/j.ceramint.2026.07.418","url":null,"abstract":"<div><div>To address the rapid advancement of sophisticated radar detection systems, high-temperature-resistant radar-absorbing coatings are essential for enhancing the survivability of high-speed military aircraft. Metamaterial absorbers are highly attractive due to their lightweight construction and tunable absorption bands. This study proposes a frequency selective surface (FSS) featuring a 0.03-mm-thick conductive coating engraved with a K-shaped pattern. The evolutionary optimization of the FSS design involves a progression from an initial T-shaped pattern to a final K-shaped configuration. This process results in a gradual increase in the intensity of the absorption peaks and ultimately achieves broadband absorption. The proposed FSS exhibits excellent robustness in microwave absorption, maintaining its broadband absorption performance even when one of the four resonators is removed or when the dimensions of all resonators are uniformly reduced by 0.40 mm on each side. The dielectric layer (Al₂O₃) and conductive layer (NiCrAlY) are fabricated using the plasma spraying method. The total thickness of the metamaterial coating (MMC) is only 1.08 mm, demonstrating ultrathin characteristics. The bond strength of the complete metamaterial structure reaches 20.1 MPa, indicating excellent structure stability. The MMC exhibits broadband microwave absorption (≤−5 dB) of 7.6 GHz across the X and Ku bands. Furthermore, this broadband microwave absorption remains stable from room temperature up to 800 °C, demonstrating excellent high-temperature stability. Due to its ultrathin profile, broadband microwave absorption performance and excellent high-temperature stability, the proposed MMC exhibits significant potential for stealth applications in extreme environments.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 45385-45393"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal oxide (TiO2 and Y2O3)-chitosan-boc-glycine nickel nanocomposites: Structural and photocatalytic behavior for pharmaceutical pollutants degradation","authors":"Bongoni Bharathi,&nbsp;Purushotham Endla,&nbsp;Priyambada Nayak,&nbsp;Arshanapelly Mahender Rao,&nbsp;Sasanka Sekhar Mishra","doi":"10.1016/j.ceramint.2026.07.421","DOIUrl":"10.1016/j.ceramint.2026.07.421","url":null,"abstract":"<div><div>TiO₂-Y₂O₃ nanoparticles were synthesized by the sol-gel method employing a two-step complexation strategy. The obtained metal oxide nanocomposites were incorporated into a chitosan-boc-glycine nickel complex to form a multifunctional hybrid photocatalyst. Structural characterization of the synthesized materials was performed by X-Ray Diffraction technique (XRD), Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), and Raman Spectroscopy (RS). Optical properties were carried out by Ultraviolet Visible Spectroscopy (UV–Vis), and photoluminescence spectroscopy (PL). XRD analysis confirmed the crystalline nature of TiO₂ and Y₂O₃ with average crystallite sizes of 10.49 nm and 16.49 nm, respectively. SEM micrographs revealed that spherical particles with homogeneous dispersion throughout the chitosan matrix. FT-IR spectra exhibited characteristic Ti–O–Ti (656 cm⁻¹) and Y–O (547 cm⁻¹) stretching vibrations, along with distinct bands. Raman Spectroscopy (RS) verified the anatase phase of TiO₂, marked by a strong vibrational mode at 134 cm⁻¹. UV–Vis spectroscopy demonstrated an energy band gap of 3.76eV (TiO₂) and 2.16eV (Y₂O₃), while PL spectra indicated band-to-band electron–hole recombination near 385 nm, corresponding to the band-edge transition of TiO₂. The photo degradation was examined over different pharmaceutical contaminants like tetracycline (TC), paracetamol (PC), and diclofenac (DCF) under UV-250, UV-365, visible, and sunlight irradiation at pH 3, 7, and 10. Further addition of Fenton's reagent enhanced degradation efficiency. Among all tested conditions, the nanocomposite exhibited the highest photocatalytic performance under natural sunlight, demonstrating its potential for sustainable environmental remediation.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 45425-45439"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure, mechanical properties, and wear resistance of novel hot-pressed Fe-SiC reactive cermets","authors":"Yovany Oropesa,&nbsp;Marisol Maril,&nbsp;Sergio Sauceda,&nbsp;Natalia Fuentes,&nbsp;Christopher Salvo,&nbsp;Juan Pablo Sanhueza,&nbsp;Flavio De Barbieri,&nbsp;Nicolás Araya","doi":"10.1016/j.ceramint.2026.07.509","DOIUrl":"10.1016/j.ceramint.2026.07.509","url":null,"abstract":"<div><div>In industries that employ abrasive slurries, such as mining, there is an ongoing effort to identify innovative, cost-effective materials that enhance wear life and reduce operational expenses. Accordingly, this study examines the Fe-SiC system to develop wear-resistant cermets with a high SiC content (50 wt%). The system's reactivity principally influences the composite's behavior. The research evaluates how particle size and sintering parameters affect densification, mechanical properties, and resistance to slurry abrasion. SiC particles (d₅₀ = 50, 100, 150 μm) were mixed with 10 μm Fe and hot-pressed at 900, 1000, and 1100 °C for 30 and 60 min. Results show that higher temperatures promote the formation of iron silicides and graphite, leading to variations in microhardness on the metallic phase as a function of the sintering parameters. Particularly, graphite morphology is strongly influenced by the size of SiC particles. Larger SiC particles led to lower densification and reduced indentation fracture resistance. Despite these challenges, this study demonstrates that the reactivity of the Fe-SiC system enables the fabrication of cermets with hardness above 4 GPa and indentation fracture resistance, K_I,IFR above 5 MPa m¹ᐟ² at relatively low temperatures and short sintering times, while also providing excellent resistance to the abrasive effects of flotation tailings and Al₂O₃ slurries. This work fills a gap in understanding the influence of SiC particle size and sintering conditions on the performance of Fe-SiC composites.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 46430-46443"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polycrystalline lithium formate monohydrate with natural and 7Li-enriched isotopic composition: synthesis, characterization, and application to EPR dosimetry in mixed gamma–neutron radiation fields","authors":"M. Carrasquero,&nbsp;G. Alejandro,&nbsp;A. Butera","doi":"10.1016/j.ceramint.2026.07.308","DOIUrl":"10.1016/j.ceramint.2026.07.308","url":null,"abstract":"<div><div>Lithium formate monohydrate (LiHCOO·H₂O) exhibits several properties related to Electron Paramagnetic Resonance (EPR) dosimetry of ionizing radiation that are advantageous compared to the well-established L-alanine. Its atomic composition is closer to that of water, with a 5–6-fold higher sensitivity than alanine in the low-dose range. In addition, the large thermal neutron capture cross-section of ⁶Li atoms (7.5% natural abundance) makes lithium formate monohydrate suitable for quantifying neutron fluences in mixed radiation fields of gamma photons and thermal neutrons. The integration of lithium formate monohydrate with natural isotopic composition (sensitive to gamma rays and thermal neutrons), together with a ⁷Li-enriched version (≈99.95% ⁷Li, sensitive only to gamma rays), into a dual EPR dosimeter would allow the simultaneous measurement of gamma dose and thermal neutron fluence in mixed radiation fields. To ensure that both materials exhibit similar microstructural characteristics, a chemical route was developed to synthesize high-quality lithium formate monohydrate powders with natural isotopic composition and ⁷Li enrichment. Morphological and physical characterization was performed by optical and electron microscopy, X-ray diffraction, thermogravimetric analysis, and Fourier transform infrared spectroscopy (FTIR). Comparison of FTIR spectra from natural and ⁷Li-enriched powders indicates a small isotopic effect in some vibrational modes due to the replacement of ⁶Li by ⁷Li. A final EPR test on natural and ⁷Li-enriched synthesized lithium formate powders irradiated in a BNCT facility showed a difference in intensity by a factor of 60, confirming that the synthesized powders are well suited for inclusion in a dual mixed-field EPR dosimeter.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 44258-44267"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of photocatalytic activity of 3D urchin-like TiO2@rGO@Ag architectures for degradation of methyl orange","authors":"Nguyen Thi Huyen,&nbsp;Cao Thi Linh Huong,&nbsp;Nguyen Van Tu,&nbsp;Pham Van Trinh,&nbsp;Cao Thi Thanh,&nbsp;Do Tuan,&nbsp;Pham Duy Long,&nbsp;Pham Thanh Binh,&nbsp;Pham Nam Thang,&nbsp;Vu Duc Chinh,&nbsp;Alexander A. Tonkikh,&nbsp;Elena D. Obraztsova,&nbsp;Vu Xuan Hoa,&nbsp;Phan Ngoc Minh,&nbsp;Nguyen Van Chuc","doi":"10.1016/j.ceramint.2026.07.506","DOIUrl":"10.1016/j.ceramint.2026.07.506","url":null,"abstract":"<div><div>Reduced graphene oxide (rGO) flakes and silver nanoparticles (AgNPs) have been successfully decorated onto the surface of three-dimensional urchin-like TiO₂ (UT) architectures via irradiation of ultraviolet (UV) light (254 nm) without using a toxic reducing agent. During the irradiation process, graphene oxide (GO) and silver nitrate (AgNO₃) were reduced to rGO and Ag⁰ metal, respectively. The UT@rGO@Ag architectures on silicon substrates were used as photocatalysts for methyl orange (MO) dye molecules degradation under irradiation of solar light. After 120 min under irradiation of solar light (AM 1.5G, 100 mW/cm²), the photocatalytic activity of UT@rGO@Ag for MO degradation reaches 99.2% with a reaction rate constant of 0.027 min⁻¹, ∼2.45 and ∼1.69 times higher than that of UT (0.011 min⁻¹) and UT@Ag (0.016 min⁻¹), respectively. The improvement in the photocatalytic degradation of UT@rGO@Ag architectures for MO dye is attributed to the specific structure of UT architectures, large surface area of rGO flakes, surface enhanced plasmon resonance of AgNPs, and formation of the Ti-O-C band between rGO flakes with UT architectures. Furthermore, the catalyst shows a high activity, good stability, and easy reusability. These results show a promising potential of UT@rGO@Ag for applications in degradation of organic dyes.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 46404-46418"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and fabrication of porous functionally graded akermanite-based composites for bone tissue engineering applications","authors":"Essam B. Moustafa,&nbsp;Hattan D. Natto,&nbsp;Essam M. Banoqitah,&nbsp;Mohammed A. Taha,&nbsp;Rasha A. Youness","doi":"10.1016/j.ceramint.2026.07.313","DOIUrl":"10.1016/j.ceramint.2026.07.313","url":null,"abstract":"<div><div>In this study, a four-layer functionally graded composite (FGC) based on akermanite was fabricated by incorporating titanium silicon carbide, silicon nitride, zinc oxide, and niobium carbide reinforcements at different volume fractions using a controlled compositional gradient and a space-holder technique to produce porous structures. The novelty of this work lies in developing a multifunctional akermanite-based graded architecture that combines different ceramic reinforcements to achieve synergistic improvements in tribo-mechanical properties, degradation behavior, and bioactivity. The physical and tribo-mechanical properties were evaluated. Additionally, the bioactivity of all prepared FGC layers was evaluated using simulated body fluid (SBF). An investigation was also performed using field-emission scanning electron microscopy (FESEM) and inductively coupled plasma-atomic emission spectroscopy (ICP-AES). FESEM demonstrated good bioactivity across all sample layers, driven by the optimal formulation, porous structures, and surface roughness that promote apatite formation. The bioactivity of the prepared samples was confirmed by significant consumption of Ca²⁺ and PO₄³⁻ ions from the SBF solution. The bulk density of all FGC layers produced was low, ranging from 2.38 to 2.50 g/cm³. The microhardness of the FGC sample layers ranges from 3.189 to 4.618 GPa, consistent with the FGC sample's microhardness, providing a strong indication of the quality of preparation and a good hardness distribution with minimal mixing. The results demonstrated the impact of surface roughness and inherent hardness of the integrated ceramic phases on the frictional performance of the produced composites. For example, the friction coefficients of the fabricated layers decreased by 3.42%, 8.42%, and 11.31%, respectively, due to these factors, compared to the layer free of ceramic reinforcements. Based on the above results, the developed FGC demonstrated promising characteristics for bone tissue engineering applications.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 44304-44318"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing energy storage performance of BNT-based lead-free relaxor ferroelectrics via a synergistic strategy of paraelectric substitution and high entropy engineering","authors":"Yue Wang,&nbsp;Zhiping Wang,&nbsp;Xin Li,&nbsp;Jiaxin Li,&nbsp;Hao Li,&nbsp;Li-Qian Cheng","doi":"10.1016/j.ceramint.2026.07.379","DOIUrl":"10.1016/j.ceramint.2026.07.379","url":null,"abstract":"<div><div>The development of dielectric ceramics with high energy storage performance (ESP) is essential for the advancement of high-power capacitors and pulsed-power systems. However, achieving simultaneous improvements in both recoverable energy density (<em>W</em>_rec) and energy storage efficiency (<em>η</em>) remains a significant challenge. In this study, the complementary advantages of the paraelectric CaZr_0.5Ti_0.5O₃ (CZT) and Bi_0.5Na_0.5TiO₃ (BNT) are first leveraged to synthesize the BNT-CZT (Δ<em>S</em>_config = 1.15R), thereby enhancing the relaxor characteristic. Subsequently, K_0.5Na_0.5NbO₃ (KNN) is introduced to modulate the configurational entropy (Δ<em>S</em>_config), yielding a series of BNT-CZT-<em>x</em>KNN (<em>x</em> = 0.05, 0.1, 0.15, 0.2) high-entropy ceramics (Δ<em>S</em>_config = 1.57R, 1.77R, 1.89R, 1.96R). This strategy effectively delays polarization saturation, while simultaneously suppressing the remnant polarization (<em>P</em>_r), thereby achieving superior comprehensive ESP. Δ<em>S</em>_config = 1.89R ceramic achieves a high <em>W</em>_rec of 5.75 J/cm³ and <em>η</em> of 79.5%. Furthermore, the material exhibits exceptional thermal and frequency stability, with variation rates maintains below 6.2% and 4.5% across the tested ranges, respectively, while simultaneously demonstrating ultra-fast charge-discharge rates. In summary, this synergistic strategy demonstrates excellent effect in enhancing the comprehensive ESP of BNT-based relaxor ferroelectric ceramics.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 45062-45069"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Color-tunable Ce3+/Tb3+ co-doped Sr5MgLa2(BO3)6 phosphor for high-quality WLEDs and non-contact optical thermometry","authors":"Ruting Tu,&nbsp;Jin Zhao,&nbsp;Funi Liu,&nbsp;Yongcheng Fu,&nbsp;Yu Wang,&nbsp;Shangjun Wang,&nbsp;Rui Bian,&nbsp;Yiming Li,&nbsp;Nazi Zhong","doi":"10.1016/j.ceramint.2026.07.377","DOIUrl":"10.1016/j.ceramint.2026.07.377","url":null,"abstract":"<div><div>Ce³⁺-doped and Ce³⁺/Tb³⁺ co-doped Sr₅MgLa₂(BO₃)₆ phosphors were synthesized via a high-temperature solid-state reaction. The phase structure and morphology were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Under 328 nm excitation, the Ce³⁺-doped phosphor exhibits blue light emission at 415 nm. Increasing the Ce³⁺ concentration leads to concentration quenching, and 0.07 was identified as the optimal doping concentration. Using this optimal Ce³⁺ concentration, Ce³⁺-Tb³⁺ co-doped Sr₅MgLa₂(BO₃)₆ phosphors were synthesized. By modifying the ratio of Ce³⁺ to Tb³⁺, a continuous blue-to-green emission color tuning was realized, along with a significant enhancement in Tb³⁺ emission intensity. Fluorescence decay analysis reveals that after co-doping with Tb³⁺, the shortening of Ce³⁺ fluorescence lifetime from 24.91 ns to 22.21 ns at a fixed Ce³⁺ concentration indicates an energy transfer process from Ce³⁺ to Tb³⁺. The quantum yield of the co-doped phosphor reaches 84.0%. White light-emitting diodes (W-LEDs) fabricated with this phosphor exhibit performance approaching that of standard white light. Beyond lighting, this phosphor also exhibits potential for optical thermometry, achieving a peak relative sensitivity of 0.823% K⁻¹ at 448 K based on the fluorescence intensity ratio (FIR) technique. Overall, Sr₅MgLa₂(BO₃)₆: Ce³⁺, Tb³⁺ is a promising dual-functional phosphor for high-quality W-LEDs and optical thermometry.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"52 25","pages":"Pages 45036-45046"},"PeriodicalIF":6.0,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}