Journal of Alloys and Compounds最新文献_第3页

pH-Mediated Hydrothermal Synthesis of SnO2 for Enhanced Ethanol Sensing: Structural Regulation and Performance Optimization

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180334

Xiaoyu Zhang, Hongji Zhu, Min Xu, Shengzhu Cao, Runze Hu, Lin Peng, Chunyu Zhang, Dong Zhang

{"title":"pH-Mediated Hydrothermal Synthesis of SnO2 for Enhanced Ethanol Sensing: Structural Regulation and Performance Optimization","authors":"Xiaoyu Zhang, Hongji Zhu, Min Xu, Shengzhu Cao, Runze Hu, Lin Peng, Chunyu Zhang, Dong Zhang","doi":"10.1016/j.jallcom.2025.180334","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180334","url":null,"abstract":"Developing high-performance gas sensors through facile synthesis remains challenging. Here, a pH-mediated hydrothermal strategy for precisely engineering SnO2 nanostructures toward exceptional ethanol sensing is reported. By systematically tuning hydrothermal pH from 2 to 13, hierarchical control of crystallinity (XRD), particle morphology (SEM/TEM), and band structure (UV-Vis) are achieved. The strong alkaline condition (pH=13) yielded monodisperse 5-10 nm nanoparticles with optimized (101) facet exposure, delivering record-high response of 97.2 toward 400 ppm ethanol at 300°C, improvements over acidic (pH=2) and neutral (pH=7) counterparts, respectively. Mechanistic studies reveal that extreme pH conditions promote charge-driven crystallization kinetics, suppressing particle agglomeration while increasing oxygen vacancies. The obtained sensitivity (20.64 ppm-1) and linearity (96.95%) surpass some multifactor-modified SnO2 sensors reported. This single-variable approach demonstrates cost reduction compared to composite modification methods, establishing a generalizable paradigm for transition metal oxide optimization. The fundamental insights into pH-dependent growth mechanisms provide new design principles for scalable nanofabrication.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"23 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819468","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}

引用次数: 0

Microstructure and properties of C/C-ZrC-CuNi composites prepared by a PIP method using inorganic salt as a precursor

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180326

Li Cuiyan, Qi Siyi, Ouyang Haibo, Shen Tianzhan, Chen Zihao, Li Yanlei, Liu Jiaqi

{"title":"Microstructure and properties of C/C-ZrC-CuNi composites prepared by a PIP method using inorganic salt as a precursor","authors":"Li Cuiyan, Qi Siyi, Ouyang Haibo, Shen Tianzhan, Chen Zihao, Li Yanlei, Liu Jiaqi","doi":"10.1016/j.jallcom.2025.180326","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180326","url":null,"abstract":"To develop active thermal protection for ultra-high temperature ceramics, C/C-ZrC-CuNi composites were fabricated using a PIP method. This study systematically studied the influence of CuNi alloy content on the microstructure, mechanical properties, thermal conductivity, and ablation resistance of the composites. The incorporation of CuNi alloy significantly enhanced the sintering of the ZrC-C matrix, resulting in improved densification of the composites. Furthermore, the presence of CuNi alloy promoted the graphitization of the carbon matrix, thereby enhancing the thermal conductivity. The composites with the highest CuNi alloy content (ZCN4 sample) exhibited the greatest density（2.26 g/cm3） and thermal conductivity（32.3 W/m·k）, along with superior ablation resistance, with mass and line ablation rates of 2.09 mg/s and 2.06 μm/s. This enhanced ablation resistance can be primarily attributed to the sweating cooling effect of the CuNi alloy, which effectively reduces the ablation temperature. Additionally, the formation of Cu2O and NiO during ablation acts as sintering aids, facilitating the development of a compact ZrO2 scale that resists flame erosion. The increased thermal conductivity of the composite further mitigates the temperature rise on the ablation surface.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"60 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819488","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}

引用次数: 0

Engineering capacitance in silver niobate nanoparticles through lanthanum doping for high-performance asymmetric supercapacitors

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180384

Aadil Rashid Lone, Azam Raza, Saddam Hussain, Basharat Ramzan, Mohd Kamran Khan, Kaifee Sayeed, Swaleha Naseem, Kavita Pandey, Absar Ahmad

{"title":"Engineering capacitance in silver niobate nanoparticles through lanthanum doping for high-performance asymmetric supercapacitors","authors":"Aadil Rashid Lone, Azam Raza, Saddam Hussain, Basharat Ramzan, Mohd Kamran Khan, Kaifee Sayeed, Swaleha Naseem, Kavita Pandey, Absar Ahmad","doi":"10.1016/j.jallcom.2025.180384","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180384","url":null,"abstract":"This study investigates the potential of perovskite oxides for supercapacitor applications, focusing on AgNbO3 synthesized via the solid-state route and doped with Lanthanum (La) at concentrations of 0%, 5%, and 9%. The doped nanomaterials were characterized using XRD, FESEM, HRTEM, XPS, FTIR, Raman, and UV-Vis spectroscopy to confirm the crystal structure, morphology and the optical properties of the synthesized materials. Electrochemical analysis demonstrated that La doping significantly enhances the capacitance of the perovskite material, with the areal capacitance increasing from 4.8 mF/cm2 at 0% La to 22.5 mF/cm2 at 9% La at a scan rate of 5 mV/s. Moreover, an asymmetric supercapacitor device was fabricated using the activated carbon (AC) as the anode and La-doped AgNbO3 as the cathode. This device demonstrated remarkable electrochemical performance, maintaining robust cyclic stability over an extensive 4,000 charge-discharge cycles at 5 mA/cm2. This study underscores the viability of La doping is a feasible approach for optimizing the energy storage properties of AgNbO3 and also paves the way for further investigation and improvement of perovskite-based materials in high-performance energy systems.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"25 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822438","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}

引用次数: 0

Glucose-modulated defect-enriched Sv-SnS2 sensor for rapid detection of NH3 at room temperature

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180379

Zhijun Lei, Minghua Lin, Yun Zhou, Caifeng Huang, Junyu Chen, Huihuang Mao, Juexian Cao, Xiaoping OuYang

{"title":"Glucose-modulated defect-enriched Sv-SnS2 sensor for rapid detection of NH3 at room temperature","authors":"Zhijun Lei, Minghua Lin, Yun Zhou, Caifeng Huang, Junyu Chen, Huihuang Mao, Juexian Cao, Xiaoping OuYang","doi":"10.1016/j.jallcom.2025.180379","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180379","url":null,"abstract":"NH3 has a profound influence on the environment and human health, so the development of NH3 sensors for rapid detection at room temperature is of great practical significance. In this paper, SnS2 nanoflower with different concentrations of S vacancies is prepared by a simple chemical reduction method, and its ability to detect NH3 at room temperature is enhanced by the modification of the electronic structure from defect. Among them, the 0.15-SnS2-Glucose (0.15-SG) sensor has a good selective response to NH3 and a fast response time of 13 s, specially possesses a response value of 79.1% to 50 ppm NH3 at room temperature. At the same time, the 0.15-SG sensor also has good long-term stability, excellent humidity resistance, and effectively detection of NH3 in complex atmospheres. In addition, the simulated breathing test shows that the 0.15-SG sensor has a 25.0% response to the exhaled gas of a simulated renal failure patient, which proves that the sensor has great potential for application in human health detection. The 0.15-SG sensor was verified by Elovich model to have greater activation energy and stronger ammonia adsorption capacity. Finally, this paper reveals its sensing mechanism in terms of defect engineering, electronic structure tuning, and specific surface area.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"14 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822440","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}

引用次数: 0

In-situ SANS for the kinetic analysis of β″ precipitation in an Al-Mg-Si alloy following deep cryogenic treatment

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180371

Levi Tegg, Halsey E. Ostergaard, Matic Jovičević-Klug, Patricia Jovičević-Klug, Chun-Ming Wu, Julie M. Cairney

{"title":"In-situ SANS for the kinetic analysis of β″ precipitation in an Al-Mg-Si alloy following deep cryogenic treatment","authors":"Levi Tegg, Halsey E. Ostergaard, Matic Jovičević-Klug, Patricia Jovičević-Klug, Chun-Ming Wu, Julie M. Cairney","doi":"10.1016/j.jallcom.2025.180371","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180371","url":null,"abstract":"Deep cryogenic treatment (DCT) can modify the mechanical properties of Al-Mg-Si alloys, but the early stages of precipitate growth are difficult to study due to natural aging. Here, small-angle neutron scattering is used to measure precipitate growth in solution-treated and deep-cryogenically treated EN AW-6026-T6 in-situ during artificial aging. The two-dimensional patterns are modelled using spherical Guinier-Porod scatters (representing solute clusters and Guinier-Preston zones) and prolate ellipsoids (representing needle-shaped Mg-Si precipitates). As aging proceeds, the volume fraction and length-diameter ratio of the ellipsoids grow in both samples. However, the transformation from solute cluster to precipitate is more rapid in the DCT sample than in the sample without cryogenic treatment. This supports ex-situ studies on DCT Al alloys, which suggest greater dislocation density increases the precipitate growth rate due to more rapid diffusion of solutes, thus increasing the opportunity for precipitates to absorb solute from the matrix.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"5 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819473","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}

引用次数: 0

Facile construction of a Bi2WO6/Mn0.2Cd0.8S S-scheme heterojunction for enhancing the photocatalytic tetracycline degradation performance and mechanism study

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180391

Simin Li, Jingwen Zhang, Yuanyuan Li, Ying Peng, Hao Wu, Puhui Deng, Linping Zhang, Yu Hou

{"title":"Facile construction of a Bi2WO6/Mn0.2Cd0.8S S-scheme heterojunction for enhancing the photocatalytic tetracycline degradation performance and mechanism study","authors":"Simin Li, Jingwen Zhang, Yuanyuan Li, Ying Peng, Hao Wu, Puhui Deng, Linping Zhang, Yu Hou","doi":"10.1016/j.jallcom.2025.180391","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180391","url":null,"abstract":"Constructing S-scheme heterojunction photocatalysts for the degradation of antibiotics has been proved to be very useful. In this work, Bi2WO6/Mn0.2Cd0.8S S-scheme heterojunction was designed by in situ growing spherical Mn0.2Cd0.8S onto flower-like Bi2WO6. The photocatalytic degradation of tetracycline performance of Bi2WO6/M0.2Cd0.8S was significantly improved compared with that of pure Bi2WO6 or Mn0.2Cd0.8S due to the high photogenerated charge carrier separation rate and the retention of strong redox capacity. The photocatalytic degradation pathway of TC was deduced using 3D-EEM and LC-MS, and the charge transfer mechanism of the Bi2WO6/Mn0.2Cd0.8S S-scheme heterojunction was verified through free radical quenching experiments, EPR, XPS and DFT calculations. This study offers a valuable approach for designing efficient photocatalysts to remove antibiotics from water.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822864","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}

引用次数: 0

8High strength and high ductility combination of biodegradable high-purity magnesium fabricated by forward extrusion and extrusion-shear process

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180388

Xin Jiang, Fengjian Shi, Qingsong Lu, Jiheng Wang, Jiawei Guo, Tianxiang Chen, Yuhang Guo, Shujin Chen, Sheng Lu, Suyu Wang

{"title":"8High strength and high ductility combination of biodegradable high-purity magnesium fabricated by forward extrusion and extrusion-shear process","authors":"Xin Jiang, Fengjian Shi, Qingsong Lu, Jiheng Wang, Jiawei Guo, Tianxiang Chen, Yuhang Guo, Shujin Chen, Sheng Lu, Suyu Wang","doi":"10.1016/j.jallcom.2025.180388","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180388","url":null,"abstract":"High-purity magnesium has been increasingly investigated as a biodegradable metal due to its excellent biocompatibility and unique biodegradability. However, its inadequate mechanical properties remain a critical bottleneck to its application. In order to improve its strength and ductility, forward extrusion (FE) and extrusion-shear (ES) were performed on the high-purity magnesium. The impact of the FE and ES process on the microstructure, texture, and mechanical properties of the material was examined. The results indicate that the grain size of high-purity magnesium was refined from 40.1 μm to 12.7 μm and 2.8 μm, and the yield strength was increased from 75.2 MPa to 101.2 MPa and 148.8 MPa after the FE and ES. The tensile elongation to failure of high-purity magnesium decreases sharply from 10.9% to 3.3% after the FE, while the tensile elongation to failure after ES increases significantly to 18.3%. A stronger basal texture was observed after the FE, while a weaker basal texture and a more dispersed recrystallization texture were produced by the ES process. The contribution of grain size, dislocation density and texture to the yield strength of high purity magnesium after different extrusion processes was calculated, and the results were in good agreement with the experiments. This shows that the improvement in yield strength is primarily attributed to grain refinement, while ductility was enhanced by the weakening of the basal texture.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"27 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822865","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}

引用次数: 0

Coherent precipitation of cuboidal nanoparticles in Al1Ti5Zr4Nb3Ta3 lightweight refractory high entropy alloy based on laser metal deposition

IF 5.8 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180312

Xuanhong Cai , Qiuju Yang , Liufei Huang , Peilin Dong , Congcong Ren , Yuanfeng Zhou , Jinfeng Li , Qing Wang

{"title":"Coherent precipitation of cuboidal nanoparticles in Al1Ti5Zr4Nb3Ta3 lightweight refractory high entropy alloy based on laser metal deposition","authors":"Xuanhong Cai , Qiuju Yang , Liufei Huang , Peilin Dong , Congcong Ren , Yuanfeng Zhou , Jinfeng Li , Qing Wang","doi":"10.1016/j.jallcom.2025.180312","DOIUrl":"10.1016/j.jallcom.2025.180312","url":null,"abstract":"<div><div>Usually, the Al-containing lightweight refractory high entropy alloys (RHEAs) prepared by casting require complex heat treatment to obtain BCC/B2 coherent microstructure, thereby achieving excellent room temperature (RT) and high temperature (HT) mechanical properties. In this work, we design a novel lightweight RHEA of Al1Ti5Zr4Nb3Ta3 (ρ = 7.46 g·cm−3) via the cluster formula approach and utilize high cooling rate and in-situ heat treatment effects of laser metal deposition (LMD) to directly obtain the BCC/B2 coherent microstructure with cuboidal BCC nanoparticles precipitated. The LMD-fabricated alloy exhibits good formability, with equiaxed grains (∼ 38 μm in size) uniformly distributed along the deposition direction. Compared with the RT compressive yield strength of the as-cast alloy (σYS = 1070 MPa), the LMD-fabricated alloy exhibits a notable enhancement by 50 % reached to 1600 MPa, which is attributed to the unique BCC/B2 coherent microstructure. Furthermore, this LMD-fabricated alloy possesses prominent elevated temperatures mechanical properties (σYS = 1124 MPa at 873 K and σYS = 259 MPa at 1273 K) due to the excellent thermal stability of the BCC/B2 coherent microstructure. The exceptional yield strength of the LMD-fabricated alloy is mainly ascribed to the grain boundary strengthening, dislocation strengthening, precipitation strengthening, and solid solution strengthening. The present work provides a new strategy for the design and fabrication of high-strength and high-plasticity RHEAs.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1025 ","pages":"Article 180312"},"PeriodicalIF":5.8,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814849","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}

引用次数: 0

Microstructure and mechanical properties evolution of a novel selective laser melted Al-Cu-Ni-Zr-Ti alloy during heat treatment

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180355

Shuaishuai Qin, Zaihua Liu, Weidong Huang, Xu Huang, Xiaojiu Hu, Kenji Matsuda

{"title":"Microstructure and mechanical properties evolution of a novel selective laser melted Al-Cu-Ni-Zr-Ti alloy during heat treatment","authors":"Shuaishuai Qin, Zaihua Liu, Weidong Huang, Xu Huang, Xiaojiu Hu, Kenji Matsuda","doi":"10.1016/j.jallcom.2025.180355","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180355","url":null,"abstract":"This study presents the microstructure and mechanical properties of an additive manufactured Al-Cu-Ni-Zr-Ti alloy fabricated by selective laser melting (SLM). The microstructure evolution during heat treatment at elevated temperatures and its impact on the mechanical properties were also systematically investigated. Results showed that the as-built Al-Cu-Ni-Zr-Ti alloy exhibited a heterogeneous grain structure, which consisted of ultrafine equiaxed and columnar grains at the bottom and top of molten pool, respectively. The L12-Al3(Zr, Ti) phase tends to form within the grains, while the heat-resistant Al7Cu4Ni phase preferentially distributes along grain boundaries during the SLM process. As a result, the SLMed Al-Cu-Ni-Zr-Ti alloy, with these unique heterogeneous structures, displays high strength and good heat resistance. The yield strength and elongation of the as-built alloy were measured as 278 MPa and 7%, respectively. When the alloy is exposed to 300 oC and 350 oC, the yield strength gradually improved with the time extended from 3 h to 200 h. Particularly, after exposure to 350 oC for 200 h, the yield strength reached 310.8 MPa, which is 12% higher than the as-built condition (278.3 MPa). Microstructure observation revealed that the refined Al7Cu4Ni phase and grains exhibited good coarsening resistance during exposure at 300 oC and 350 oC, precipitation of nano-sized L12-Al3(Zr, Ti) and θ' phases provide additional strengthening. Therefore, the SLMed cost-effective Al-Cu-Ni-Zr-Ti alloy demonstrates promising suitability as a heat-resistant aluminum alloy within the 300-350°C range, while its thermal resistance at temperatures up to 400°C remains insufficient.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"11 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819467","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}

引用次数: 0

Multi-mode optical thermometers via CaLaMgTaO6：Bi3+, Er3+ phosphors for fibre-optic temperature sensing

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-04-11 DOI: 10.1016/j.jallcom.2025.180377

Liangliang Hu, Xincheng Lv, Peng Qiao, Junhao Wu, Degang Deng, Shiqing Xu, Hongping Ma

{"title":"Multi-mode optical thermometers via CaLaMgTaO6：Bi3+, Er3+ phosphors for fibre-optic temperature sensing","authors":"Liangliang Hu, Xincheng Lv, Peng Qiao, Junhao Wu, Degang Deng, Shiqing Xu, Hongping Ma","doi":"10.1016/j.jallcom.2025.180377","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180377","url":null,"abstract":"Remote optical thermometry and multi-mode anti-counterfeiting demand luminescent materials with tunable dual-activator emissions and high sensitivity. However, achieving multi-functional platforms that integrate temperature sensing, anti-counterfeiting, and real-time device monitoring remains challenging. Bi3+/Er3+ co-doped CaLaMgTaO6 phosphors were synthesized via a high-temperature solid-state reaction to address this gap. Optical thermometers were developed based on the different thermal stabilities of the Bi3+ and Er3+ emissions, achieving a relative and absolute sensitivities of 1.45% and 0.0028 K−1, respectively, which serve as the first detection signal. Upon excitation at 980 nm, Er3+ exhibited up-conversion emissions at 533, 547 and 663 nm, enabling optical thermometry through fluorescence intensity ratio of 2H11/2/4S3/2 and 2H11/2/4F9/2, which serve as the second and third detection signals, respectively. The phosphors also exhibited a potential to be used in multi-mode anti-counterfeiting applications and were utilized to design a multi-level system with dynamic colour transitions. Finally, the phosphors were successfully used for fibre-optic temperature sensing by incorporating them in a platform that measures the temperature of rechargeable lithium batteries in real time. These results highlight the potential of Bi3+/Er3+ co-doped CaLaMgTaO6 phosphors for advanced applications in remote temperature sensing and anti-counterfeiting.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"9 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819485","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}

引用次数: 0