Materials Research Bulletin最新文献

Binder-free NiCoCu/graphene aerogel electrodes for supercapacitors 超级电容器用无粘结剂NiCoCu/石墨烯气凝胶电极

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-02-01 DOI: 10.1016/j.materresbull.2026.114038

Hanyu Yang , Chang Yang , Zhiteng Wang , Chenning Sun , Huidong Xie

Herein, we integrate the advantages of carbon and pseudocapacitive materials by employing a three-dimensional graphene oxide hydrogel network as a template to in situ adsorb the metal ions. Using a template-assisted hydrothermal process, we constructed a self-supporting ternary nickel-cobalt-copper basic carbonate/graphene aerogel (NiCoCu/GA) composite. Results reveal that NiCoCu/GA exhibits a high areal capacitance of 3448.8 mF·cm⁻² at 1 mA·cm⁻² and retains 93.33% of its capacitance after 15,000 charge-discharge cycles. The unique 3D conductive graphene frameworks offer abundant Faradaic reaction sites while ensuring efficient electron transport and structural stability. When assembling NiCoCu/GA and activated carbon into an asymmetric supercapacitor device, it achieves an energy density of 813.9 µWh·cm⁻² at a power density of 49.74 µW·cm⁻² and retains 86.96% of its capacity after 10,000 cycles. This work presents an effective strategy for overcoming the long-standing challenge of balancing high capacitance and long cycle life in supercapacitors.

在这里，我们通过采用三维氧化石墨烯水凝胶网络作为模板来原位吸附金属离子，从而整合了碳和假电容材料的优点。采用模板辅助水热工艺，构建了一种自支撑型三元镍钴铜碱碳酸酯/石墨烯气凝胶（NiCoCu/GA）复合材料。结果表明，NiCoCu/GA在1 mA·cm - 2条件下具有3448.8 mF·cm - 2的高面电容，在15000次充放电循环后仍能保持93.33%的电容。独特的3D导电石墨烯框架提供了丰富的法拉第反应位点，同时确保了有效的电子传递和结构稳定性。将NiCoCu/GA与活性炭组装成非对称超级电容器器件，在49.74µW·cm−2的功率密度下，获得了813.9µWh·cm−2的能量密度，并在10,000次循环后保持了86.96%的容量。这项工作提出了一种有效的策略，克服了长期以来超级电容器平衡高电容和长循环寿命的挑战。

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引用次数: 0

Thermally controlled Er3+-Ho3+ energy transfer in NaYGeO4 olivine phosphor for enhanced NIR-II luminescence and sensitive thermometry 热控制Er3+-Ho3+在NaYGeO4橄榄石荧光粉中的能量转移，增强NIR-II发光和灵敏测温

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-01-28 DOI: 10.1016/j.materresbull.2026.114033

Hui Zeng , Xiaolang Fan , Yangbo Wang , Huaiyong Li

Lanthanide NIR-II luminescence free from thermal quenching is attractive for various applications at elevated temperatures. Here, we present a thermal enhancement of Er³⁺ NIR-II luminescence based on the synergy of phonon assisted Er³⁺-Er³⁺ cross relaxations and controllable Er³⁺-Ho³⁺ energy transfer. The lattice expansion of NaYGeO₄ olivine phosphor upon heating (298–823 K) suppresses the Er³⁺-Ho³⁺ energy transfer and leads up to 46.1 times enhancement of Er³⁺ NIR-II luminescence under 379 nm excitation. The NIR-II luminescence evolution as increasing temperature allows dual-mode ratiometric thermometry, i.e., luminescence intensity ratios (LIRs) based on Er^{3+ 4}I_13/2 Stark sublevels and on Er^{3+ 4}I_13/2 and Ho^{3+ 5}I₆ levels. Obtained relative sensitivities above 0.46% K^‒1 over a broad temperature range of 298–673 K with a maximum of 2.32% K^-1 suggest NaYGeO₄:Er³⁺/Ho³⁺ phosphor as a promising NIR-II luminescence thermometer. Moreover, this research offers an available perspective for designing thermal-enhanced NIR luminescence in ordinary thermal expansion materials.

无热猝灭的镧系NIR-II发光对高温下的各种应用具有吸引力。在这里，我们提出了基于声子辅助Er3+-Er3+交叉弛豫和可控Er3+-Ho3+能量转移协同作用的Er3+ NIR-II发光的热增强。在加热（298 ~ 823 K）时，NaYGeO4橄榄石荧光粉的晶格膨胀抑制了Er3+-Ho3+的能量转移，导致Er3+ NIR-II在379 nm激发下的发光增强了46.1倍。NIR-II发光随温度升高的演变允许双模比例测温，即基于Er3+ 4I13/2 Stark亚能级和Er3+ 4I13/2和Ho3+ 5I6能级的发光强度比（lir）。在298 ~ 673 K的较宽温度范围内获得了0.46% K-1以上的相对灵敏度，最大值为2.32% K-1，表明NaYGeO4:Er3+/Ho3+荧光粉是一种很有前途的NIR-II发光温度计。此外，本研究为设计普通热膨胀材料的热增强近红外发光提供了一个可行的前景。

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引用次数: 0

Self-assembled monolayer-based ETLs for perovskite solar cells: A review 钙钛矿太阳能电池自组装单层etl的研究进展

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-01-25 DOI: 10.1016/j.materresbull.2026.114029

Othmane El baz, Mohamed Ilsouk, Sarah Derbali

Perovskite solar cells (PSCs) are gaining significant attention due to their remarkable power conversion efficiencies (PCEs), cost-effective fabrication, and scalable manufacturing processes. Meanwhile, self-assembled monolayers (SAMs) have emerged as useful interfacial materials and as effective hole transport layers (HTLs) in PSCs with tunable energy-level alignment, passivation properties, and improved charge transport properties. Recently their application as electron transport layers (ETLs) has gained much more attention as an economically viable and scalable option compared to conventional inorganic ETLs while ensuring improved device performance. The present review provides an overview of the advantages of SAMs and their role in modifying the interfaces between HTLs and perovskite, as well as between ETLs and perovskite. In addition, this review focuses on the latest advances in SAM-based ETLs demonstrating their potential to replace the conventional ETLs used in PSCs. The challenges associated with the application of SAMs in PSCs are also discussed, including issues related to stability and characterization techniques.

钙钛矿太阳能电池（PSCs）由于其卓越的功率转换效率（pce）、经济高效的制造和可扩展的制造工艺而受到广泛关注。同时，自组装单层（sam）已成为有用的界面材料和有效的空孔传输层（HTLs），具有可调的能级排列，钝化性能和改进的电荷传输性能。最近，它们作为电子传输层（etl）的应用获得了更多的关注，与传统的无机etl相比，它是一种经济可行和可扩展的选择，同时确保了设备性能的提高。本文综述了SAMs的优点及其在修饰HTLs和钙钛矿之间以及ETLs和钙钛矿之间的界面方面的作用。此外，本文重点介绍了基于sam的etl的最新进展，展示了它们取代psc中使用的传统etl的潜力。本文还讨论了与在psc中应用SAMs相关的挑战，包括与稳定性和表征技术相关的问题。

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引用次数: 0

Synthesis and analysis of titanium nitride/titanium oxynitride films using colliding plasma pulsed laser deposition techniques 碰撞等离子体脉冲激光沉积技术合成氮化钛/氮化氧钛薄膜及分析

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-01-25 DOI: 10.1016/j.materresbull.2026.114030

Ravi Pratap Singh , Astha Shukla

Titanium nitride/oxynitride thin films hold significant potential for use as transparent coatings and for creating functionalized surfaces. We have investigated the synthesis and analysis of titanium nitride/ titanium oxynitride thin films on quartz substrates using reactive colliding pulsed laser deposition (CPLD) technique. The major challenge in reactive pulsed laser deposition of titanium nitride/oxynitride is controlling the reactive incorporation of nitrogen and oxygen species in the titanium plasma, due to complex plasma plume dynamics. Here, we have systematically investigated the interaction and expansion of colliding titanium plasma plumes over a broad pressure range (10⁻⁵ mbar to 10 mbar) using 2D imaging. The 2D imaging reveals that expansion of the plasma plume is strongly influenced by background pressure. At low pressure colliding plasma plumes expand freely in forward direction. While higher pressure leads to plume confinement due to increased collisions between the plasma and ambient species. Based on this study, we performed colliding-plume PLD in ambient air to deposit TiN/oxynitride films. The characterization of deposited films using XRD and EDXA confirms the presence of titanium nitride/ oxynitride phases with nitrogen content of ≈5 wt% and significant oxygen arising from both substrate and oxide formation. Optical transmittance measurements show the high transmittance (∼90%) in the range 400 nm-700 nm, consistent with non-uniform distribution of titanium nitride particulates and presence of titanium oxynitride.

氮化钛/氧化氮化钛薄膜具有作为透明涂层和创建功能化表面的巨大潜力。采用反应碰撞脉冲激光沉积（CPLD）技术在石英衬底上合成了氮化钛/氮化钛氧薄膜，并对其进行了分析。由于复杂的等离子体羽流动力学，反应性脉冲激光沉积氮化钛/氮化氧的主要挑战是控制氮和氧在钛等离子体中的反应性结合。在这里，我们系统地研究了碰撞钛等离子体羽流在宽压力范围内（10 - 5毫巴至10毫巴）的相互作用和膨胀。二维成像显示，等离子体羽流的膨胀受到背景压力的强烈影响。在低压下，碰撞的等离子体羽流向前自由膨胀。而由于等离子体和周围物质之间的碰撞增加，更高的压力导致羽流限制。在此基础上，我们在环境空气中进行了碰撞羽流PLD沉积TiN/氮化氧薄膜。利用XRD和EDXA对沉积膜进行表征，证实了氮化钛/氮化氧相的存在，氮含量为≈5 wt%，并且在衬底和氧化物形成过程中都产生了大量的氧。光学透射率测量表明，在400 nm ~ 700 nm范围内具有较高的透射率（~ 90%），与氮化钛颗粒的不均匀分布和氮化钛氧的存在相一致。

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引用次数: 0

Advanced protocols for enhancing magnetocaloric effect and relative cooling power: Phenomena important for cooling technology 提高磁热效应和相对冷却功率的先进方案：冷却技术的重要现象

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-01-24 DOI: 10.1016/j.materresbull.2026.114021

Amanulla Karikar , Koustav Pal , Kalipada Das , Kalpataru Pradhan , Biswarup Satpati , I. Das

In recent years, cooling has become essential for food preservation, modern comfort, and various cryogen-based cutting-edge technologies. Traditional cooling systems primarily rely on the Joule-Thomson effect, which is inefficient to meet the rapidly growing global demand and often utilizes environmentally harmful gases. In this scenario the magnetocaloric effect has emerged as a promising alternative in both of these respects; however, its application is limited by the high cost and limited stability of the working magnetic materials. Oxide materials, despite being low-cost and air-stable, typically exhibit low relative cooling power as documented in the literature and derived through conventional methods. We have introduced a novel measurement protocol that significantly enhances the magnetocaloric effect and relative cooling power, offering a new perspective on the numerous magnetic materials already reported, as well as future materials. In Sm_0.50Ca_0.15Sr_0.35MnO

_{3}

, the proposed measurement protocol yielding a

\sim

16-fold enhancement in the magnetocaloric effect and an

\sim

440% increase in the relative cooling power. Our findings represent a significant advancement for magnetic refrigeration technology.

近年来，冷却已成为食品保存、现代舒适和各种基于低温的尖端技术的必要条件。传统的冷却系统主要依靠焦耳-汤姆逊效应，这是低效的，以满足快速增长的全球需求，往往使用对环境有害的气体。在这种情况下，磁热效应在这两个方面都成为一种有希望的替代方案；然而，其应用受到高成本和工作磁性材料有限的稳定性的限制。氧化物材料，尽管是低成本和空气稳定的，通常表现出较低的相对冷却能力，如文献记载和通过传统方法得出的。我们介绍了一种新的测量方案，显着增强了磁热效应和相对冷却功率，为已经报道的众多磁性材料以及未来的材料提供了新的视角。在Sm0.50Ca0.15Sr0.35MnO3中，所提出的测量方案产生的磁热效应增强了~ 16倍，相对冷却功率增加了~ 440%。我们的发现代表了磁制冷技术的重大进步。

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引用次数: 0

Structural, chemical, and functional recovery of gamma-irradiated B4C microparticles through thermal annealing 伽玛辐照B4C微粒通过热退火的结构、化学和功能恢复

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-01-24 DOI: 10.1016/j.materresbull.2026.114028

Fatemeh Soltanifar , Ehsan Ebrahimibasabi , Mohammad Mahdi Shahidi

This study explores the recovery induced by thermal annealing of gamma-irradiated boron carbide (B4C) microparticles exposed to 0, 100, and 150 kGy. Samples annealed at 1100 °C under an argon atmosphere were examined using XRD, FESEM, FTIR, DRS, and Hall effect measurements. Thermal annealing partially restored crystallinity via defect recombination, reduced particle agglomeration, and improved surface ordering. FTIR revealed attenuation of O–H and B–O vibrations, reflecting stabilization of B–C bonding as well as thermally assisted dehydroxylation and reconfiguration of oxygen-related species. DRS indicated smoother reflectance profiles, while Hall measurements showed enhanced n-type conductivity and carrier density, with optimal recovery at 100 kGy. Overall, thermal annealing mitigates irradiation-induced degradation and provides chemical and structural insights into defect healing in boron-rich ceramics, suggesting their potential for radiation-tolerant applications.

本研究探讨了暴露于0、100和150 kGy的γ辐照碳化硼（B4C）微粒的热退火诱导的回收率。采用XRD、FESEM、FTIR、DRS和霍尔效应测试对1100℃氩气气氛下退火后的样品进行了表征。热退火通过缺陷复合、减少颗粒团聚和改善表面有序来部分恢复结晶度。FTIR显示O-H和B-O振动的衰减，反映了B-C键的稳定以及热辅助脱羟基和氧相关物质的重新配置。DRS显示了更平滑的反射曲线，而Hall测量显示n型电导率和载流子密度增强，在100 kGy时恢复最佳。总的来说，热退火减轻了辐射引起的降解，并为富硼陶瓷的缺陷愈合提供了化学和结构方面的见解，表明它们具有耐辐射应用的潜力。

引用次数: 0

Construction of CeO2/MIL-100(Fe) heterojunction with multi-oxidation-reduction cycle system for photo-Fenton degradation of tetracycline CeO2/MIL-100（Fe）异质结光- fenton降解四环素的多氧化-还原循环体系构建

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-01-23 DOI: 10.1016/j.materresbull.2026.114026

Qingmin Luo , Qian Wang , Xinyu Yang , Jing Yang , Caiyun Jiang , Shihai Cui

In this study, CeO₂/MIL-100(Fe) heterojunction was synthesized for photo-Fenton degradation of tetracycline. The morphology, crystallinity, elemental composition, surface structure and optical properties of the materials were characterized. The N₂ adsorption-desorption isotherm indicated that CeO₂/MIL-100(Fe) had a large specific surface area of 368.96 m²·g^-1 and the pore volume of 2.834 cm³·g^-1. Photo-Fenton degradation experiments showed that about 93.0% of the tetracycline was efficiently removed after 40 min illumination. After 5 cycles of the experiment, a high degradation efficiency of 87.0% was still achieved. Free radical trapping experiments revealed ·OH as the primary active species, while h⁺ and ⋅O₂^- also participated in the degradation process. In addition, the susceptibility sites of tetracycline molecules were analyzed by theoretical calculation, which was supported by the intermediates tested in experiments. This work combined the photo and Fenton catalysis, constructed multi-oxidation-reduction cycle system including Ce⁴⁺/Ce³⁺, Fe³⁺/Fe²⁺ and H₂O₂/·OH, and achieved efficient degradation of tetracycline.

本研究合成了CeO2/MIL-100（Fe）异质结，用于光fenton降解四环素。表征了材料的形貌、结晶度、元素组成、表面结构和光学性能。N2吸附-解吸等温线表明，CeO2/MIL-100（Fe）具有368.96 m2·g-1的大比表面积和2.834 cm3·g-1的孔隙体积。光- fenton降解实验表明，光照40 min后，四环素的去除率约为93.0%。经过5次循环试验，仍能达到87.0%的高降解率。自由基捕获实验表明·OH是主要的活性物质，h+和⋅O2-也参与了降解过程。此外，通过理论计算分析了四环素分子的易感位点，实验中测试的中间体也支持了理论计算。本研究将光催化与Fenton催化相结合，构建了Ce4+/Ce3+、Fe3+/Fe2+、H2O2/·OH多氧化还原循环体系，实现了四环素的高效降解。

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引用次数: 0

The correlation between microstructure and grain boundary plane distribution of hot-deformed Nd-Fe-B magnets—From the perspective of the five parameter analysis method 热变形Nd-Fe-B磁体显微组织与晶界面分布的关系——基于五参数分析方法的视角

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-01-23 DOI: 10.1016/j.materresbull.2026.114027

Qian Li , Wenhui Wang , Sujie Tang , Yuan Teng , Hanxiao Zhou

Hot-deformed Nd-Fe-B magnets underpin many high-efficiency energy technologies because of their exceptional magnetic properties. Yet the microstructural origins of their strong anisotropy—particularly the influence of grain boundary structure and character—remain only partially resolved. In this work, we correlate grain boundary plane distributions to magnetic anisotropy along distinct crystallographic directions. Nanocrystalline Nd-Fe-B magnets were fabricated by spark plasma sintering, followed by hot pressing and hot deformation. Using electron backscatter diffraction coupled with five parameter analysis, we quantitatively mapped grain boundary orientations and microstructural features along the c-axis and in non-c-axis directions. The c-axis-aligned specimen shows a pronounced (001) texture, exhibiting a remanence of 12.5 kG and a maximum energy product of 34.9 MGOe—approximately 150% higher than values measured in the non-c-axis direction. Five parameter analysis further reveals that grain boundaries parallel to the c-axis are enriched in a characteristic 39°/(001) misorientation and cluster strongly near the (110) plane (multiples of random distribution, MRD = 7.4), whereas grain boundaries sampled along the non-c-axis direction are comparatively dispersed (MRD = 2.3). These observations suggest that the elevated remanence primarily reflects the strengthened c-axis texture, while the higher coercivity correlates with a continuous grain boundary network that suppresses domain-wall propagation. Collectively, our results provide a microstructural basis for designing anisotropic Nd-Fe-B magnets through deliberate texture control, offering both mechanistic insight and a practical route to improved permanent-magnet processing.

由于其特殊的磁性，热变形钕铁硼磁体是许多高效能源技术的基础。然而，它们强各向异性的微观结构起源，特别是晶界结构和特征的影响，仍然只是部分解决。在这项工作中，我们将晶界面分布与沿不同晶体学方向的磁各向异性联系起来。采用火花等离子烧结-热压-热变形法制备纳米晶钕铁硼磁体。利用电子背散射衍射结合五参数分析，定量绘制了沿c轴和非c轴方向的晶界取向和显微组织特征。c轴对齐的样品显示出明显的（001）织构，残余12.5 kG，最大能量积34.9 mgo，比非c轴方向测量的值高约150%。5个参数进一步分析表明，平行于c轴方向的晶界具有明显的39°/(001)错取向，在（110）面附近聚集强烈（随机分布的倍数，MRD = 7.4），而沿非c轴方向的晶界相对分散（MRD = 2.3）。这些观察结果表明，剩余力的增加主要反映了c轴织构的增强，而矫顽力的增加与连续的晶界网络有关，从而抑制了畴壁的扩展。总的来说，我们的研究结果为通过精心控制织构来设计各向异性钕铁硼磁体提供了微观结构基础，为改进永磁体加工提供了机理见解和实用途径。

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引用次数: 0

Preparation and sodium storage mechanism of Sn-doped molybdenum trisulfide for high-performance sodium-ion battery anode 高性能钠离子电池负极用掺锡三硫化钼的制备及其储钠机理

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-01-23 DOI: 10.1016/j.materresbull.2026.114024

Yao Tang , Xinyu Wang , Long Xi , Ling Zhu , Huiyu Zhang , Jie Ma , Xiangsi Wu , Xianming Wu , Yonggang Huang , Xianwen Wu

The development of advanced anode materials is pivotal for sodium-ion batteries. Herein, we synthesized Sn-doped MoS₃/carbon nanotube (SMS/CNT) composites via a simple one-step solvothermal method. CNTs enhance electrical conductivity and structural stability, while Sn²⁺ doping modulates MoS₃’s electronic structure, lowering Na⁺ intercalation/deintercalation activation energy and accelerating ion diffusion. Ex situ XRD confirms that MoS₃ forms Na_xMoS₃ during Na⁺ intercalation, and Na_xMoS_y generates in the Na⁺ deintercalation process. The intermediates of Na_xMoS_y enhance the electrochemical reversibility of MoS₃ anode. When discharged at 0.5 A·g^-1, SMS/CNT delivers a high capacity of 597 mAh·g^-1 (66.0% retention after 150 cycles), and 183 mAh·g^-1 is retained at 20 A·g^-1. Besides, the SMS/CNT|| Na_0.44MnO₂ full cell exhibits excellent capacity and rate performance. This work provides a scalable route for high-performance metal sulfide anodes and supports the advancement of sodium ion batteries.

先进负极材料的开发是钠离子电池发展的关键。本文采用简单的一步溶剂热法合成了掺锡MoS3/碳纳米管（SMS/CNT）复合材料。CNTs增强了MoS3的导电性和结构稳定性，Sn2+掺杂调节了MoS3的电子结构，降低了Na⁺的插/脱插活化能，加速了离子的扩散。Ex - situ XRD证实了MoS3在Na⁺插层过程中生成了NaxMoS3，而NaxMoSy在Na⁺脱层过程中生成。NaxMoSy的中间体增强了MoS3阳极的电化学可逆性。当以0.5 A·g-1放电时，SMS/CNT提供597 mAh·g-1的高容量（150次循环后保持66.0%），在20 A·g-1下保持183 mAh·g-1。此外，SMS/CNT|| Na0.44MnO2全电池具有优异的容量和倍率性能。这项工作为高性能金属硫化物阳极提供了可扩展的途径，并支持钠离子电池的发展。

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引用次数: 0

Radiation-resilient LBNBS glasses for dual applications in actinide immobilization and optical radiation sensing 辐射弹性LBNBS玻璃在锕系固定和光辐射传感双重应用

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin

Pub Date : 2026-01-22 DOI: 10.1016/j.materresbull.2026.114022

Nimai Pathak , Prithwish Sinharoy , Vidya Thorat , Swayam Kesari , Dhanadeep Dutta , Dayamoy Banerjee

The immobilization of trivalent minor actinides (Am³⁺, Cm³⁺) is critical for nuclear waste management due to their long half-lives and radiotoxicity. LBNBS glasses were synthesized by melt quenching, with Eu³⁺ used as a spectroscopic surrogate. Structural, optical, chemical, and radiation responses were studied using XRD, SEM–EDX, photoluminescence (PL), gamma irradiation (5–1000 kGy), ASTM C1285-94 leaching tests, and positron annihilation lifetime spectroscopy (PALS). The glasses showed amorphous homogeneity and uniform dopant distribution. Leaching enhanced PL intensity due to reduced surface quenching, while irradiation caused defect-related PL quenching without altering spectral profiles. PALS revealed intrinsic free-volume defects in unirradiated glass (τ₁ = 0.297 ns, τ₂ = 0.765 ns), which decreased after irradiation up to 1000 kGy (τ₁ ≈ 0.247–0.250 ns; τ₂ ≈ 0.694–0.697 ns), indicating radiation-induced densification. The stable Eu³⁺ environment and dose-dependent CIE shift (0.56618, 0.42029 to 0.49101, 0.48826) confirm suitability for actinide immobilization and radiation sensing.

三价小锕系元素（Am³+、Cm³+）的固定化由于其半衰期长和放射性毒性，对核废料管理至关重要。采用熔体淬火法制备了LBNBS玻璃，以Eu³⁺作为光谱替代物。采用XRD、SEM-EDX、光致发光（PL）、γ辐照（5-1000 kGy）、ASTM C1285-94浸出试验和正电子湮灭寿命谱（PALS）研究了结构、光学、化学和辐射响应。玻璃具有非晶均匀性和均匀的掺杂分布。由于表面淬火减少，浸出增强了PL强度，而辐照导致缺陷相关的PL淬火而不改变光谱剖面。PALS揭示了未辐照玻璃的固有自由体积缺陷（τ₁≈0.297 ns, τ₂= 0.765 ns），在辐照至1000 kGy （τ₁≈0.247-0.250 ns; τ₂≈0.694-0.697 ns）后下降，表明辐射引起致密化。稳定的Eu³+环境和剂量依赖的CIE位移（0.56618、0.42029至0.49101、0.48826）证实了它在锕系元素固定和辐射传感方面的适用性。

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引用次数: 0