Materials Science and Engineering: B最新文献

Facile construction of CeO2-ZnO nanospheres modified carbon paste electrochemical sensor for the determination of gallic acid as a crucial antioxidant CeO2-ZnO纳米球修饰碳糊电化学传感器的简易构建，用于检测关键抗氧化剂没食子酸

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-31 DOI: 10.1016/j.mseb.2026.119181

Mohammad Shahsavani, Javad Tashkhourian

The detection of gallic acid in food products is critically important in the food industry due to its role as a potent antioxidant. However, excessive consumption of gallic acid at high concentrations has been associated with adverse health effects, particularly hepatotoxicity and nephrotoxicity. This study presents the development of CeO₂-ZnO nanospheres modified carbon paste electrochemical sensor (CeO₂-ZnO/CPE) as an economical, reusable, and efficient sensing platform for determining gallic acid in different tea samples. The electrochemical analysis demonstrated that the CeO₂-ZnO/CPE displayed significantly enhanced electrocatalytic activity for gallic acid oxidation compared to a bare carbon paste electrochemical sensor. The detection of gallic acid was accomplished through the implementation of the square wave voltammetry technique after optimizing the operational parameters. The sensor demonstrated a proportional increase in the oxidation peak current across two linear ranges (0.01–1.0 μmol/L and 1.0–100.0 μmol/L) and a detection limit of 5.3 nmol/L. The fabricated sensor exhibited excellent repeatability (RSD = 1.6%), robust reproducibility (RSD = 1.5%), and exceptional selectivity toward gallic acid, even when challenged with potentially interfering ionic and biological species. The sensor's robust performance was confirmed through validation studies using square wave voltammetry on various tea matrices, including green, black, and sour teas. The recovery studies yielded excellent results (99.1–102.3%), further validating the method's reliability for the complex sample analysis.

由于没食子酸是一种有效的抗氧化剂，因此对食品中没食子酸的检测在食品工业中至关重要。然而，过量食用高浓度没食子酸会对健康产生不利影响，特别是肝毒性和肾毒性。本研究提出了CeO2-ZnO纳米球修饰碳糊电化学传感器（CeO2-ZnO/CPE）作为一种经济、可重复使用、高效的检测平台，用于测定不同茶叶样品中的没食子酸。电化学分析表明，CeO2-ZnO/CPE对没食子酸氧化的电催化活性明显高于裸碳糊电化学传感器。通过优化操作参数，实现方波伏安法检测没食子酸。该传感器在0.01 ~ 1.0 μmol/L和1.0 ~ 100.0 μmol/L两个线性范围内的氧化峰电流呈比例增加，检测限为5.3 nmol/L。该传感器具有良好的重复性（RSD = 1.6%）、稳健的重现性（RSD = 1.5%）和对没食子酸的选择性，即使在潜在干扰离子和生物物种的挑战下也是如此。通过方波伏安法对各种茶基质（包括绿茶、红茶和酸茶）的验证研究，证实了传感器的鲁棒性。回收率为99.1 ~ 102.3%，进一步验证了该方法用于复杂样品分析的可靠性。

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引用次数: 0

Lattice engineering of nickel-doped cobalt tetraoxide nanofibers: Construction of multi-electron transfer channels and multi-valence electrochromic response 镍掺杂四氧化钴纳米纤维的晶格工程：多电子转移通道的构建和多价电致变色响应

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-30 DOI: 10.1016/j.mseb.2026.119209

Haiyong Cai, Ang Wang, Yin Li, Liguo Shang, Aiyun Jiang

Cobalt tetraoxide (Co₃O₄) is a highly promising functional material with significant potential in electrochromic electrode applications. In this study, Ni-doped Co₃O₄ nanostructured thin films were successfully prepared using a hydrothermal synthesis combined with high-temperature annealing process. Scanning electron microscopy (SEM) characterization revealed that the 1% Ni-doped sample exhibited a notably increased specific surface area, with its nanostructure showing a unique fibrous morphology. Electrochemical testing results demonstrated that the 1% Ni doping enhanced the OH⁻ diffusion coefficient to 41.20 × 10⁻¹² cm²/s, which is 3.97 times higher than that of pure Co₃O₄ (10.38 × 10⁻¹² cm²/s). More importantly, the study found that Ni ions exhibited a unique reversible Ni²⁺/Ni³⁺ valence transition during the electrochromic process. This transition synergistically interacted with the Co²⁺/Co³⁺ valence state change, promoting a multi-electron transfer process. This work clarifies the synergistic effect of Ni ion valence transitions in the electrochromic process and provides new theoretical insights and technical solutions for designing high-performance electrochromic materials with multi-valence state synergy.

四氧化钴（Co3O4）是一种非常有前途的功能材料，在电致变色电极方面具有很大的应用潜力。在本研究中，采用水热合成结合高温退火工艺成功制备了ni掺杂Co3O4纳米结构薄膜。扫描电镜（SEM）表征表明，1% ni掺杂样品的比表面积显著增加，其纳米结构呈现出独特的纤维形态。电化学测试结果表明，1% Ni掺杂使OH−扩散系数达到41.20 × 10−12 cm2/s，是纯Co3O4 （10.38 × 10−12 cm2/s）的3.97倍。更重要的是，研究发现Ni离子在电致变色过程中表现出独特的可逆Ni2+/Ni3+价态转变。这种转变与Co2+/Co3+价态变化协同作用，促进了多电子转移过程。本研究阐明了镍离子价态跃迁在电致变色过程中的协同效应，为设计具有多价态协同的高性能电致变色材料提供了新的理论见解和技术解决方案。

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引用次数: 0

Luminescence and energy transfer behavior in Gd0.985Er0.01Sm0.005Al0.995Cr0.005O3 for plant growth LED lighting gd0.985 er0.01 sm0.005 al0.995 cr0.0050 o3中植物生长LED照明的发光和能量传递行为

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-30 DOI: 10.1016/j.mseb.2026.119217

F. Mselmi , Souha Kammoun , M. Bessaoud , E. Dhahri , J. Pina , B.F.O. Costa

The Gd_0.985Er_0.01Sm_0.005Al_0.995Cr_0.005O₃ sample is synthesized using the solid-state reaction method. The Gd_0.985Er_0.01Sm_0.005Al_0.995Cr_0.005O₃ samples crystallize in a Pbnm space group with orthorhombic structure phase. Under λ_ex = 377 nm, the PL spectrum of the Gd_0.985Er_0.01Sm_0.005Al_0.995Cr_0.005O₃ sample exhibit two intense red peaks at 693 nm and 726 nm assigned to ²T₁(²G)→⁴A₂(⁴F) and ²E(²G) → ⁴A₂(⁴F) transitions of Cr³⁺. It also exhibits lines at 562 nm, (602 nm, 609 nm) and 647 nm are due to the transitions ⁴G_5/2 → ⁶H_5/2, ⁴G_5/2 → ⁶H_7/2 and ⁴G_5/2 → ⁶H_9/2 of Sm³⁺ [8]. A green emission band centered at 522 nm, 542 nm and 549 nm appear in the PL spectrum of the Gd_0.985Er_0.01Sm_0.005Al_0.995Cr_0.005O₃ under λ_ex = 377 nm ascribed to the transitions ²H_11/2 → ⁴I_15/2, and ⁴S_3/2 → ⁴I_15/2 of Er³⁺ ions. The optical analysis indicates the presence of the energy transfer from Sm³⁺, Er³⁺, and intrinsic defects to Cr³⁺. This energy transfer enhances the far-red emission at 693 nm and 726 nm. The chromaticity (x, y) of the prepared phosphor Gd_0.985Er_0.01Sm_0.005Al_0.995Cr_0.005O₃ indicate that it suitable for use as luminescent material for plant growth LED application.

采用固相反应法制备了gd0.985 er0.01 sm0.005 al0.995 cr0.0050 o3样品。gd0.985 er0.01 sm0.005 al0.995 cr0.0050 o3晶型为Pbnm空间群，具有正交结构相。在λex = 377 nm下，gd0.985 er0.01 sm0.005 al0.995 cr0.0050 o3样品的PL光谱在693 nm和726 nm处呈现两个强烈的红色峰，分别为Cr3+的2T1（2G）→4A2（4F）和2E（2G）→4A2（4F）跃迁。由于Sm3+[8]的4G5/2→6H5/2、4G5/2→6H7/2和4G5/2→6H9/2的转变，在562 nm、（602 nm、609 nm）和647 nm处也出现了谱线。在λex = 377 nm下，gd0.985 er0.01 sm0.005 al0.995 cr0.0050 3的PL光谱中出现了以522 nm、542 nm和549 nm为中心的绿色发射带，这是由于Er3+离子的2H11/2→4I15/2和4S3/2→4I15/2跃迁所致。光学分析表明存在Sm3+、Er3+和本征缺陷向Cr3+的能量转移。这种能量转移增强了693 nm和726 nm的远红发射。制备的荧光粉gd0.985 er0.01 sm0.005 al0.995 cr0.0050 o3的色度（x, y）表明其适合作为植物生长LED的发光材料。

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引用次数: 0

Optoelectronic investigation of plasmon-enhanced silicon thin-film solar cells: effect of nanoparticles geometry, periodic density, embedding position, and dielectric environment on device performance 等离子体增强硅薄膜太阳能电池的光电研究：纳米颗粒几何形状、周期密度、嵌入位置和介电环境对器件性能的影响

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-30 DOI: 10.1016/j.mseb.2026.119253

Arnab Panda , Kanik Palodhi , D.V. Prashant , Sachchidanand , Mukesh K. Sahu , Yagyadatta Goswami

Thin-film silicon solar cells are potential for cost-effective photovoltaics, but their application is significantly limited due to poor optical absorption and limited photogeneration rates at sub-micron active layers. To overcome this, advanced light-harvesting techniques are being studied, plasmonic light trapping via metal nanostructures has emerged as a promising technique to improve the optical absorption and carrier generation via coupling the incident spectrum into localized surface plasmon resonances (LSPR). This phenomenon enhances the induced electromagnetic filed at the metal-semiconductor interface, leads to improved photon trapping in the absorber layer and overall photocurrent. The tuneability of plasmonic behaviour, through parametric optimization of nanoparticle diameter, shape, periodic distribution, and dielectric environment, provides a very essential degree of freedom for optimizing the overall performance of the solar cells. In this study, silver coated polystyrene (AgPs) core-shell metal nanoparticles are incorporated into a sub-micron crystalline silicon absorber layer, where their plasmonic properties ensures effective light trapping while maintaining reduced absorber layer thickness. By systematically tuning the nanoparticles size, orientation, periodic density, and their placement within the absorber layer, we have optimized the optoelectronic performance of the proposed design. In comparison to an untextured, ARC-free planar silicon solar cell, the proposed design has achieved 43.30% much higher PCE with an excellent short-circuit current density (

j_{{SC}_{Prac}}

) of 29.95 mA/cm², an open circuit voltage (V_oc) of 0.61 V, and Fill factor (FF) of 82.16%, under AM 1.5G solar illumination. These findings highlight the effectiveness of plasmon engineered nanostructures for overcoming optical losses in sub-micron absorber layers, and also offers a scalable and material-efficient strategy for future next-generation solar cells.

薄膜硅太阳能电池是具有成本效益的光伏电池的潜力，但由于其在亚微米有源层的光吸收和光产生率有限，其应用受到很大限制。为了克服这一问题，人们正在研究先进的光捕获技术，通过金属纳米结构捕获等离子体光已经成为一种有前途的技术，通过将入射光谱耦合到局部表面等离子体共振（LSPR）中来改善光吸收和载流子产生。这种现象增强了金属-半导体界面处的感应电磁场，改善了吸收层中的光子捕获和整体光电流。等离子体行为的可调性，通过对纳米颗粒直径、形状、周期分布和介电环境的参数优化，为优化太阳能电池的整体性能提供了非常重要的自由度。在这项研究中，银涂层聚苯乙烯（AgPs）核壳金属纳米颗粒被纳入亚微米晶体硅吸收层，在那里它们的等离子体特性确保有效的光捕获，同时保持减少的吸收层厚度。通过系统地调整纳米颗粒的尺寸、取向、周期密度及其在吸收层内的位置，我们优化了所提出设计的光电性能。与无纹理、无电弧的平面硅太阳能电池相比，在AM 1.5G太阳光照下，该设计的PCE提高了43.30%，短路电流密度（jSCPrac）为29.95 mA/cm2，开路电压（Voc）为0.61 V，填充系数（FF）为82.16%。这些发现突出了等离子体工程纳米结构在克服亚微米吸收层光学损耗方面的有效性，也为未来下一代太阳能电池提供了可扩展和材料高效的策略。

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引用次数: 0

Non-perturbative method for spin-Hamiltonian parameters and its applications to Co2+ ions in CaF2 and CdTe 自旋-哈密顿参数的非微扰方法及其在CaF2和CdTe中Co2+离子的应用

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-30 DOI: 10.1016/j.mseb.2026.119211

Jin Xin Lei

To date, perturbation calculation remains the most commonly used method for calculations of the spin Hamiltonian parameters of 3d

^{n}

ions in most cases. In this paper, the spin Hamiltonian parameters are studied in a non-perturbative scheme. This scheme does not depend on any interaction model and is applicable to all 3d

^{n}

ions in C

_{2}

and higher symmetries. The method is applied to study the high order spin Hamiltonian parameters of Co

^{2 +}

ions in CaF

_{2}

and CdTe within the framework of molecular orbit scheme and the complete energy diagonalization procedure. The local structure, the optical fine spectra and the high order spin Hamiltonian parameters of Co

^{2 +}

ions embedded in CaF

_{2}

and CdTe are explained uniformly.

迄今为止，在大多数情况下，微扰计算仍然是计算3dn离子自旋哈密顿参数最常用的方法。本文研究了非微扰格式下的自旋哈密顿参数。该方案不依赖于任何相互作用模型，适用于C2及更高对称的所有3dn离子。应用该方法在分子轨道方案和完整的能量对角化过程框架下，研究了CaF2和CdTe中Co2+离子的高阶自旋哈密顿参数。统一地解释了Co2+离子在CaF2和CdTe中的局部结构、光学精细光谱和高阶自旋哈密顿参数。

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引用次数: 0

Sr doped ZnO nanoparticles: Assessment of structural and optical properties towards enhanced visible-light-driven photocatalytic degradation of textile dyes Sr掺杂ZnO纳米颗粒：增强可见光催化降解纺织染料的结构和光学性能评估

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-30 DOI: 10.1016/j.mseb.2026.119225

Abhishek R. Bhapkar , Hozefa Dhila , Rishi Prasad , Khalil Gheisari , Kishor Kumar Sadasivuni , Shekhar Bhame

Herein, we report glycine-nitrate combustion synthesis of zinc oxide (ZnO) and strontium (Sr) doped zinc oxide (SZO-x, where x = 1,2,3, and 4% Sr doping) nanoparticles. The impact of Sr doping on ZnO's structural, optical, and photocatalytic properties has been assessed through comprehensive characterizations techniques. XRD analysis confirmed the incorporation of Sr into ZnO lattice, as evidenced by peak shifts and lattice parameters variations, with SZO-3 exhibiting smallest crystallite size. BET studies revealed SZO-3's superior surface properties, with significantly increased specific surface area, pore size, and total pore volume. UV–vis spectroscopy confirmed a band gap narrowing from 3.21 eV to 3.14 eV, while PL spectroscopy revealed the lowest PL emission intensity for SZO-3. Raman spectroscopy confirmed phase purity, while FT-IR identified surface functional groups in synthesized samples. FE-SEM analysis revealed a reduction in particle size with increasing Sr doping, while EDX analysis confirmed Sr incorporation in doped sample. Among all the samples, SZO-3 exhibited exceptional visible-light photocatalytic activity, degrading 98.2% methylene blue (MB) in 100 min, 99% indigo carmine (IC) in 80 min, while 51.5% textile industrial effluent (IE), and 83.5% mixed dyes were degraded in 120 min. Operating parameters such as doping amount of Sr, catalyst loading and pH of the dye solution critically influenced degradation. All degradation reactions followed first-order kinetics (R² > 0.96), with SZO-3 exhibiting superior rate constant (0.031 min⁻¹) and stability across four photocatalytic cycles. Radical quenching experiments confirmed the role of hydroxyl radicals (^•OH) as the primary reactive species driving the photocatalytic degradation process.

本文报道了甘氨酸-硝酸燃烧合成氧化锌（ZnO）和锶（Sr）掺杂氧化锌（SZO-x，其中x = 1、2、3和4% Sr掺杂）纳米颗粒。通过综合表征技术评估了Sr掺杂对ZnO结构、光学和光催化性能的影响。XRD分析证实了Sr在ZnO晶格中的存在，通过峰移和晶格参数的变化可以看出，SZO-3的晶粒尺寸最小。BET研究表明，SZO-3具有优异的表面性能，显著增加了比表面积、孔径和总孔容。紫外可见光谱结果表明，SZO-3的带隙从3.21 eV缩小到3.14 eV，而PL光谱结果表明SZO-3的PL发射强度最低。拉曼光谱证实了相纯度，而FT-IR鉴定了合成样品的表面官能团。FE-SEM分析显示，随着Sr掺杂量的增加，颗粒尺寸减小，而EDX分析证实了Sr掺杂在掺杂样品中。其中，SZO-3表现出优异的可见光催化活性，100 min降解98.2%的亚甲基蓝（MB）， 80 min降解99%的靛胭脂（IC）， 120 min降解51.5%的纺织工业废水（IE）和83.5%的混合染料。Sr掺杂量、催化剂负载和染料溶液pH等操作参数对降解有重要影响。所有降解反应都遵循一级动力学（R2 > 0.96）， SZO-3在四个光催化循环中表现出优异的速率常数（0.031 min−1）和稳定性。自由基猝灭实验证实了羟基自由基（•OH）作为驱动光催化降解过程的主要反应物质的作用。

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引用次数: 0

Enhanced mechanical and electrochemical behavior of electrodeposited Ni-B-NbC coatings: experimental characterization and COMSOL simulation 电沉积Ni-B-NbC涂层增强的力学和电化学行为：实验表征和COMSOL模拟

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-30 DOI: 10.1016/j.mseb.2026.119222

Ahmad Saadi Samra , Samra Zafar , Muhammad Ahmad , Muhammad Husnain , Ramazan Kahraman , Bilal Mansoor , Kamran Ali , R.A. Shakoor

This study investigates the fabrication of Ni-B-NbC composite coatings using the electrodeposition technique, where different loadings of Niobium Carbide (NbC) particles were introduced into a Nickel‑boron matrix (NiB). The effect of NbC incorporation with different concentrations (2, 4, and 6 g/L) on the coating's structural morphology, surface characteristics, mechanical strength, and electrochemical behavior was comprehensively analyzed. Structural observations confirmed that NbC particles were successfully embedded within the NiB matrix, while maintaining the characteristic cauliflower-like surface texture. The microhardness of the coatings increased progressively with higher NbC content, achieving a peak value of 1873 HV at 6 g/L. Similarly, the corrosion resistance enhanced consistently, with the maximum charge transfer resistance (Rct) reaching 5260 Ω·cm² at the same particle concentration. The optimized Ni-B-NbC coating (6 g/L) exhibited simultaneous improvements in hardness (∼127%) and corrosion resistance (∼92%) compared with the unreinforced NiB layer. These enhancements stem from dispersion strengthening and refinement of the grain structure, which collectively harden the matrix and reduce active surface exposure. Additionally, the filling of micro-defects by NbC particles contributes to the barrier effect. Complementary COMSOL Multiphysics simulations revealed that the co-deposition of NbC modifies the local current density distribution during electrodeposition, influencing coating uniformity and integrity. The overall improvement in corrosion and mechanical aspects indicates the potential of Ni–B–NbC composite coatings for harsh service environments in oil and gas, automobile, and aerospace applications.

本研究采用电沉积技术制备Ni-B-NbC复合涂层，在镍-硼基体（NiB）中加入不同负载的碳化铌（NbC）颗粒。综合分析了不同浓度（2、4、6 g/L）的NbC掺入对涂层结构形貌、表面特性、机械强度和电化学行为的影响。结构观察证实，NbC颗粒成功嵌入NiB基体中，同时保持了菜花状表面纹理的特征。随着NbC含量的增加，涂层的显微硬度逐渐增大，在6 g/L时达到峰值1873 HV。同样，耐蚀性也不断增强，在相同颗粒浓度下，最大电荷转移电阻（Rct）达到5260 Ω·cm2。与未增强的NiB层相比，优化后的Ni-B-NbC涂层（6 g/L）的硬度（~ 127%）和耐腐蚀性（~ 92%）同时提高。这些增强源于分散强化和晶粒结构的细化，它们共同使基体硬化并减少了活性表面暴露。此外，NbC颗粒对微缺陷的填充有助于形成屏障效应。COMSOL多物理场模拟表明，共沉积NbC改变了电沉积过程中的局部电流密度分布，影响了镀层的均匀性和完整性。Ni-B-NbC复合涂层在腐蚀和机械方面的整体改进表明，它在石油和天然气、汽车和航空航天等恶劣服务环境中的应用潜力巨大。

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引用次数: 0

Magnetic photocatalysts based on ferrite@ZrO2@TiO2 core-shell systems for degradation of aqueous pollutants 基于ferrite@ZrO2@TiO2核壳体系的磁性光催化剂降解含水污染物

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-29 DOI: 10.1016/j.mseb.2026.119241

Alex M. Neris , Charlie Salvador , Ubiratan C. Silva , Carlos Chesman , Giovanna Machado , Elson Longo , Ieda M.G. Santos

The versatility of core@shell systems comes from the combination of multiple properties, considering the specificity of each materials. In the present work, photocatalysts easily separated from the aqueous media were obtained, by the use of core@shell systems, CoMnFe₂O₄@ZrO₂@TiO₂, with different proportions of ZrO₂ and TiO₂. The materials were synthesized by the modified Pechini method and characterized in relation to its structural, physical and morphological properties. The photocatalytic efficiency was evaluated using a cationic as target. All photocatalysts were easily separated from the aqueous solution using a magnet, despite the small amount of ferrite (10%, in wt) in the core@shell systems. A high efficiency (96%) was obtained in the decolorization of methylene blue using the system CoMnFe₂O₄@ZrO₂@TiO₂, with 85% of TiO₂ and 5% of ZrO₂, after 16 h of UVC irradiation with 3 low power lamps (9 W). This decolorization is much higher than results obtained without ZrO₂ as intermediate phase in CoMnFe₂O₄@TiO₂ photocatalyst (49%) and without TiO₂ as active phase in CoMnFe₂O₄@ZrO₂ (40%), for the same irradiation time.

core@shell系统的多功能性来自多种特性的组合，考虑到每种材料的特殊性。在本工作中，通过使用core@shell体系，CoMnFe2O4@ZrO2@TiO2，不同比例的ZrO2和TiO2，获得了易于从水介质中分离的光催化剂。采用改进的Pechini方法合成了该材料，并对其结构、物理和形态性能进行了表征。以阳离子为目标评价了光催化效率。所有的光催化剂都很容易用磁铁从水溶液中分离出来，尽管在core@shell体系中有少量的铁氧体（10%,wt）。3盏低功率灯（9 W） UVC照射16 h后，TiO2含量为85%，ZrO2含量为5%的CoMnFe2O4@ZrO2@TiO2体系对亚甲基蓝的脱色效率达到96%。在相同的辐照时间下，这种脱色效果远高于在CoMnFe2O4@TiO2光催化剂中不使用ZrO2作为中间相（49%）和在CoMnFe2O4@ZrO2中不使用TiO2作为活性相（40%）的脱色效果。

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引用次数: 0

A brief review of high-entropy oxides in solid oxide fuel cell applications 高熵氧化物在固体氧化物燃料电池中的应用综述

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-29 DOI: 10.1016/j.mseb.2026.119260

Yueyuan Gu , Juan Shi , Dilshod Nematov , Aoqi Liu , Yanru Yin , Hailu Dai , Lei Bi

Solid oxide fuel cells (SOFCs) are efficient energy conversion devices essential to clean energy development, yet their broad application is limited by material challenges, including sluggish oxygen reduction kinetics at intermediate temperatures, electrode instability and vulnerability to contaminants. High-entropy oxides, a novel class of materials characterized by multiple principal elements and high configurational entropy, present a promising approach to overcome these issues via their distinctive “four core effects”. This review begins with the fundamentals of high-entropy oxides, covering their definition, phase stabilization mechanisms, and relevant descriptors, then systematically reviews their progress as SOFC cathodes, electrolytes, and anodes. Key advances are summarized, and current challenges are analyzed, offering guidance for the design of high-performance and stable high-entropy oxides for SOFCs.

固体氧化物燃料电池（sofc）是清洁能源开发中必不可少的高效能量转换设备，但其广泛应用受到材料挑战的限制，包括在中等温度下缓慢的氧还原动力学，电极不稳定和易受污染物的影响。高熵氧化物是一类具有多主元素和高构型熵特征的新型材料，通过其独特的“四大核心效应”为克服这些问题提供了一种有希望的方法。本文从高熵氧化物的基本原理开始，涵盖了它们的定义、相稳定机制和相关描述符，然后系统地回顾了它们作为SOFC阴极、电解质和阳极的进展。总结了主要进展，分析了当前面临的挑战，为sofc高性能、稳定的高熵氧化物的设计提供指导。

引用次数: 0

Crystal engineering and humidity response of metal halide perovskite [Ph3MeP]2CuBr4 single crystals: A combined experimental and theoretical approach 金属卤化物钙钛矿[Ph3MeP]2CuBr4单晶的晶体工程与湿度响应：实验与理论相结合的方法

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B

Pub Date : 2026-01-29 DOI: 10.1016/j.mseb.2026.119233

Dinesh , Neeraj Dhariwal , Arun Sharma

Metal halide perovskites have made an significant impact in the scientific world due to their interesting applications in photovoltaics and optoelectronics. Metal halide perovskite single crystals were synthesized and comprehensively characterized using a multi-technique approach to elucidate its structural, electronic, optical, thermal, mechanical, and functional properties. Single-crystal X-ray diffraction (SCXRD) revealed Pna21 space group and molecular packing while scanning electron microscopy (SEM) highlighted continues arrangement of atoms throughout the crystal lattice. X-ray photoelectron spectroscopy (XPS) validated the elemental composition and oxidation states, supporting the material's chemical stability. The frontier molecular orbitals (HOMO-LUMO) and non-covalent interaction (NCI) investigations revealed detailed information about the electronic structure and intermolecular interactions corroborating the system's stability. Mechanical resilience was assessed using the Vickers microhardness technique, which indicated that the crystals possesses moderate resistance to deformation. DSC and TGA confirmed the thermal stability of the material up to 200 °C. Impedance and modulus spectroscopy elucidated the conduction mechanism and confirmed the non-Debye to Debye type behaviour in the compound as a function of temperature. The optical band gap analysis indicated a direct allowed transition with a band gap of 1.75 eV, suggesting a suitable semiconductor nature for optoelectronic applications. Finally, the material exhibited substantial humidity sensing behaviour, highlighting its potential for environmental sensing applications

金属卤化物钙钛矿由于其在光伏和光电子领域的有趣应用而在科学界产生了重大影响。摘要合成了金属卤化物钙钛矿单晶，并采用多技术手段对其结构、电子、光学、热、力学和功能特性进行了综合表征。单晶x射线衍射（SCXRD）显示了Pna21的空间基团和分子排列，扫描电镜（SEM）显示了整个晶格中原子的连续排列。x射线光电子能谱（XPS）验证了元素组成和氧化态，支持了材料的化学稳定性。前沿分子轨道（HOMO-LUMO）和非共价相互作用（NCI）的研究揭示了系统的电子结构和分子间相互作用的详细信息，证实了系统的稳定性。利用维氏显微硬度技术评估了机械回弹性，表明晶体具有中等的抗变形能力。DSC和TGA证实材料的热稳定性高达200°C。阻抗和模量谱分析阐明了导电机理，并证实了化合物的非德拜型到德拜型行为是温度的函数。光学带隙分析表明，直接允许跃迁的带隙为1.75 eV，表明适合光电应用的半导体性质。最后，该材料表现出大量的湿度传感行为，突出了其在环境传感应用中的潜力

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