Materials Research Bulletin最新文献

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Tuning ceria-based nanomaterials: The effects of chemical potential and mineralizing agents on atmosphere-induced electrical resistance 调谐铈基纳米材料：化学势和矿化剂对大气感应电阻的影响

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

Materials Research Bulletin

Pub Date : 2025-12-29 DOI: 10.1016/j.materresbull.2025.113987

H. Moreno , L.S.R. Rocha , G. Garcia , C. Macchi , M.A. Ponce , J.R. Sambrano , I.E. dell´Erba , A. Albuquerque , E. Longo , M.A. Ramirez , A.Z. Simões

This study explores the electrical and physicochemical properties of CeO₂ thick films by combining theoretical simulations with experimental analyses under variable gas atmospheres. The films are prepared via screen printing, using particles synthesized through the microwave-assisted hydrothermal method with KOH and NaOH at concentrations of 2 and 4 M. KOH promotes higher nucleation rates, resulting in smaller particles with greater surface areas, whereas NaOH leads to fewer nucleation events and thus larger, less agglomerated particles. This trend is supported by the observed increase in the τ₁ lifetime, which rises from approximately 202 ps (NaOH 2 M) to about 219 ps (KOH 2 M), indicating a higher concentration of oxygen vacancies in the KOH-synthesized sample. In contrast, NaOH-based powders produce densely packed particles that form compact and uniform films. Consequently, the faster response times exhibited by the KOH-synthesized samples, compared to those synthesized with NaOH, reinforce their potential for application in gas sensing devices. Overall, the chemical potential plays a critical role in influencing response times by affecting charge carrier dynamics, enhancing surface reaction rates, stabilizing temperature effects, managing defect states, and facilitating chemical interactions.

本研究通过理论模拟和实验分析相结合的方法，探讨了不同气体气氛下CeO2厚膜的电学和物理化学性质。采用微波辅助水热法在浓度为2 m和4 m的KOH和NaOH中合成颗粒，通过丝网印刷制备薄膜。KOH促进更高的成核速率，导致更小的颗粒和更大的表面积，而NaOH导致更少的成核事件，因此更大，更少团聚的颗粒。观测到的τ₁寿命的增加支持了这一趋势，从大约202 ps （NaOH 2 M）上升到大约219 ps (KOH 2 M)，表明KOH合成样品中的氧空位浓度更高。相反，naoh基粉末产生密集堆积的颗粒，形成致密和均匀的薄膜。因此，与NaOH合成的样品相比，koh合成的样品显示出更快的响应时间，这增强了它们在气敏器件中的应用潜力。总的来说，化学势通过影响载流子动力学、提高表面反应速率、稳定温度效应、管理缺陷状态和促进化学相互作用，在影响响应时间方面起着关键作用。

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引用次数: 0

Corrigendum to “Design of a S-scheme heterojunction photocatalyst of N-TiO2/CuO/GO with enhanced visible-light activity for efficient formaldehyde degradation” [Materials Research Bulletin 196 (2026) 113925] “设计具有增强可见光活性的N-TiO2/CuO/GO的s型异质结光催化剂用于有效降解甲醛”的勘误表[材料研究通报196 (2026)113925]

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

Materials Research Bulletin

Pub Date : 2025-12-29 DOI: 10.1016/j.materresbull.2025.113969

Zhexi Shen , Jiayi Shi , Longlong Xiao , Boqu Yu , Xiaoxin Chen , Chaohong Zhang

引用次数: 0

Insights into electrochemical behavior and cathodic nucleation of zirconium in the NaCl-KCl melt NaCl-KCl熔体中锆的电化学行为和阴极成核研究

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

Materials Research Bulletin

Pub Date : 2025-12-29 DOI: 10.1016/j.materresbull.2025.113986

Peizhu Mao , Zijian Wang , Zepeng Lv , Shaolong Li , Jilin He , Jianxun Song

This study investigates the nucleation of zirconium during electrodeposition in molten salts. Electrochemical analysis confirmed Zr⁴⁺ reduction on Mo proceeds via two reversible, diffusion-controlled steps: Zr⁴⁺ + 2e⁻ → Zr²⁺ and Zr²⁺ + 2e⁻ → Zr, with diffusion coefficients of 1.64 × 10⁻⁵ cm² s⁻¹ and 9.19 × 10⁻⁵ cm² s⁻¹ for Zr(IV) and Zr(II), respectively, at 750 °C. Chronoamperometry revealed that nucleation transitions from instantaneous to progressive with increasing temperature or overpotential. A key finding is that a high F⁻/Zr⁴⁺ molar ratio of 16:1 stabilizes instantaneous nucleation across a wide overpotential range (50–100 mV), suppressing the transition to progressive nucleation. This study has conducted a comprehensive and systematic in-depth research and analysis on the nucleation process of zirconium ions, laying a solid foundation for precisely controlling the nucleation conditions.

本文研究了熔盐电沉积过程中锆的成核过程。电化学分析证实Zr4+在Mo上的还原通过两个可逆的扩散控制步骤：Zr4+ + 2e−→Zr2+和Zr2+ + 2e−→Zr，在750℃下Zr（IV）和Zr（II）的扩散系数分别为1.64 × 10−5 cm2 s−1和9.19 × 10−5 cm2 s−1。随温度或过电位的升高，成核由瞬时转变为渐进。一个关键的发现是，高的F−/Zr4+摩尔比为16:1，在很宽的过电位范围内（50-100 mV）稳定瞬时成核，抑制向渐进成核的转变。本研究对锆离子的成核过程进行了全面、系统的深入研究和分析，为精确控制成核条件奠定了坚实的基础。

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引用次数: 0

Eco-friendly cotton fabric coloration using Ni@Ti3C2 MXene for reactive dyeing wastewater degradation 利用Ni@Ti3C2 MXene对环保型棉织物染色废水进行活性降解

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

Materials Research Bulletin

Pub Date : 2025-12-29 DOI: 10.1016/j.materresbull.2025.113984

Xinqi Zhang , Bingxin Wang , Dawu Shu , Wanxin Li , Fangfang An , yueyong Dong

Dyeing wastewater, a common type of wastewater in the textile industry, has a complex composition, deep color, and poor degradability. In this work, hydrothermal method was employed to synthesize Ni@MXene catalysts, and their performance in the Ni@MXene/PMS (peroxymonosulfate) system was investigated. A mixed system containing 7.5 g/L PMS and 0.2 g/L Ni@MXene was stirred for 60 min at 25 °C and pH 6, achieving a degradation percentage of 93.66%, ‧OH are the primary active species in this catalytic system, and the anion has minimal interference with the degradation process. The degradation percentage of the Ni@MXene catalyst can still reach 88.23 % after 3 times of recycling, and the degraded dyeing wastewater can be used for dyeing cotton fabrics. In conclusion, the catalyst demonstrates exhibits significant potential for dye degradation and wastewater recycling, providing valuable insights for energy conservation and emission reduction.

印染废水是纺织工业中常见的一类废水，其成分复杂，颜色深，可降解性差。本文采用水热法合成Ni@MXene催化剂，并对其在Ni@MXene/PMS（过氧单硫酸盐）体系中的性能进行了研究。在25℃、pH 6条件下，加入7.5 g/L PMS和0.2 g/L Ni@MXene的混合体系搅拌60 min，降解率达到93.66%，其中OH为主要活性物质，阴离子对降解过程的干扰最小。Ni@MXene催化剂回收3次后降解率仍可达88.23%，降解后的印染废水可用于棉织物染色。综上所述，该催化剂在染料降解和废水循环利用方面具有重要的潜力，为节能减排提供了有价值的见解。

引用次数: 0

Tailoring photoluminescent properties through host modification and charge compensation in Dy3+ doped CaMg3(SO4)4 phosphor 在Dy3+掺杂的CaMg3(SO4)4荧光粉中，通过宿主修饰和电荷补偿来调整光致发光性能

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

Materials Research Bulletin

Pub Date : 2025-12-28 DOI: 10.1016/j.materresbull.2025.113985

M.H. Taywade , Yatish R. Parauha , N.S. Dhoble , S.J. Dhoble

Phosphor materials are commonly used in the design of high-performance solid-state lighting systems. A variety of Dy³⁺-doped CaMg₃(SO₄)₄ phosphors were synthesized using high temperature solid-state reaction technique, with co-doping of tungstate [WO₄]^2- and alkali metal ions (Na⁺, K⁺, Li⁺) to improve their photoluminescence performance. Structural study proved phase purity and morphological examinations demonstrated uniform grain dispersion. The incorporation of [WO₄]^2- led to extensive excitation and emission bands through ligand-to-metal charge transfer (LMCT), effectively producing Dy³⁺ emissions. Co-doping with alkali metal ions served as effective charge compensators, greatly increasing emission intensity. Under 353 nm excitation, the phosphors produced brilliant white light with CIE coordinates in the near-white area and favorable correlated color temperature (CCT) values. These findings highlight the potential of the developed phosphors for usage in energy-efficient solid-state lighting and display systems.

荧光粉材料通常用于高性能固态照明系统的设计。采用高温固相反应技术合成了多种Dy3+掺杂CaMg3(SO4)4荧光粉，钨酸盐[WO4]2-与碱金属离子（Na+、K+、Li+）共掺杂，提高了其光致发光性能。结构研究证明相纯度和形态检查表明均匀的颗粒分散。[WO4]2-的掺入通过配体到金属的电荷转移（LMCT）导致了广泛的激发和发射带，有效地产生了Dy3+发射。与碱金属离子共掺杂作为有效的电荷补偿剂，大大提高了发射强度。在353nm激发下，荧光粉产生明亮的白光，CIE坐标在近白区域，相关色温（CCT）值良好。这些发现突出了开发的荧光粉在节能固态照明和显示系统中的应用潜力。

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引用次数: 0

Statistical physics, mechanisms, and reuse potential of an adsorbent from volcanic rock powder towards metals and dyes 火山岩粉末吸附剂对金属和染料吸附的统计物理、机理和再利用潜力

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

Materials Research Bulletin

Pub Date : 2025-12-28 DOI: 10.1016/j.materresbull.2025.113983

Ana Carolina Ferreira Piazzi Fuhr , Jandira Leichtweis , Diovani Leindecker Rossato , Fernando Machado Machado , Salah Knani , Luis Felipe Oliveira Silva , Tito J. Crissien , Guilherme Luiz Dotto

In this study, an integrated approach was employed that combines experimental adsorption techniques with a theoretical analysis based on statistical physics models, allowing a structurally detailed interpretation of the interactions between the proposed adsorbent and the different classes of pollutants, as metals (Ag⁺_(aq) and Cu²⁺_(aq)), and organic dyes (acid green 16 and acid red 97). Maximum adsorption capacities reached 70.81 mg g⁻¹ for Ag⁺, 71.93 mg g⁻¹ for Cu²⁺, 197.01 mg g⁻¹ for acid green 16, and 194.33 mg g⁻¹ for acid red 97, confirming the material's high uptake potential. Adsorption energies confirmed physical adsorption mechanisms. The material achieved removal efficiencies of over 90% for all contaminants and retained more than 85% efficiency after 5 regeneration cycles. These findings demonstrate the potential of statistical physics models for the detailed characterization of molecular interactions in adsorption systems for metals and dyes, contributing to understanding the removal mechanisms of these emerging contaminants.

在这项研究中，采用了一种综合方法，将实验吸附技术与基于统计物理模型的理论分析相结合，允许对所提出的吸附剂与不同类别的污染物(如金属(Ag + （aq)和Cu + (aq)）和有机染料（酸绿16和酸红97）之间的相互作用进行结构上的详细解释。Ag +的最大吸附量为70.81 mg g⁻¹，Cu 2 +的最大吸附量为71.93 mg g⁻¹，酸绿16的最大吸附量为197.01 mg g⁻¹，酸红97的最大吸附量为194.33 mg g⁻¹，证实了该材料的高吸收潜力。吸附能证实了物理吸附机制。该材料对所有污染物的去除效率超过90%，并在5次再生循环后保持85%以上的效率。这些发现证明了统计物理模型在金属和染料吸附系统中分子相互作用的详细表征方面的潜力，有助于理解这些新兴污染物的去除机制。

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引用次数: 0

Enhanced Spark plasma sintering in MgB2 added with Ge-Te alloys 添加Ge-Te合金增强MgB2的火花等离子烧结

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

Materials Research Bulletin

Pub Date : 2025-12-27 DOI: 10.1016/j.materresbull.2025.113982

D. Batalu , R. Svoboda , G.V. Aldica , V. Sandu , M.A. Grigoroscuta , A.M. Badea , C. Locovei , M. Enculescu , S. Popa , A. Kuncser , P. Badica

Alloys (A) of crystalline Ge50Te50 and partially amorphous Ge20Te80 were added to MgB₂ superconductor. Samples with composition (MgB₂)A_0.01 were ex situ spark plasma sintered (SPS) and characterized. Results are compared with pristine and Te ((MgB₂)Te_0.01) or Ge, ((MgB₂)Ge_0.01) added samples. Samples with Ge-Te alloys show the fastest densification rate of 3.4 to 5.2 times larger than for the other samples. Although there is a strong influence of Te, alloys synergistically contribute structural and microstructural development and superconducting properties as determined by magnetometry. The proposed methodology of densification curves analysis allows prediction of the final bulk density, MgO and MgB₄ amounts, the amount of carbon substituting boron and critical temperature. The alloys addition promotes MgB₄ formation and a slightly lower critical current density J_c for Ge50Te50. For Ge20Te80, J_c is approximately similar to pristine sample, while the highest J_c is for Te. Samples with Ge-Te have lower maximum pinning force values.

在MgB2超导体中加入晶态Ge50Te50和部分非晶态Ge20Te80合金(A)。对成分（MgB2）A0.01的样品进行了非原位放电等离子烧结（SPS）并进行了表征。结果与原始和Te （(MgB2)Te0.01）或Ge （(MgB2)Ge0.01）添加样品进行了比较。Ge-Te合金的致密化速度最快，是其他合金的3.4 ~ 5.2倍。虽然Te的影响很大，但磁强计测定的结果表明，合金对结构和微观结构的发展以及超导性能都有协同作用。所提出的致密曲线分析方法可以预测最终堆积密度、MgO和MgB4量、碳取代硼量和临界温度。合金的加入促进了MgB4的形成，并使Ge50Te50的临界电流密度Jc略低。对于Ge20Te80， Jc近似于原始样品，而对于Te， Jc最高。含有Ge-Te的样品具有较低的最大钉钉力值。

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引用次数: 0

Chemical reengineering of waste polyester-cotton blends with comprehensive sustainability assessment 废涤棉混纺的化学再造及综合可持续性评价

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

Materials Research Bulletin

Pub Date : 2025-12-26 DOI: 10.1016/j.materresbull.2025.113979

Tian Tian , Xinyu Wang , Xinglin Liu , Wang Liao , De-Yi Wang

The large amount of textiles has caused a serious environmental burden. Creative methods should be proposed to solve the long-standing unresolved problem. Herein, waste polyester-cotton blend (PCB) are converted into robust and flame-resistant composite aerogels under the light of ‘Chemical Reengineering’. The compression modulus of the resulting aerogel is up to 23.9 MPa with corresponding specific modulus of 69.92 m²/s². The in-situ introduction of magnesium-aluminium layered double hydroxide (MgAl LDH) in PCB gel decreases the peak heat release rate (PHRR) by 91.6% and extends the time to peak heat release (tPHRR) to 115 s. Simultaneously, terephthalic acid (TPA) is effectively recovered with a purity as high as 99.7%. Furthermore, a comprehensive sustainability assessment with 4 rating parameters is promoted to evaluate and compare recent recycling methods.

大量的纺织品造成了严重的环境负担。应该提出创造性的方法来解决长期未解决的问题。在此，废弃的涤棉混纺（PCB）在“化学再造”的光下转化为坚固耐用的阻燃复合气凝胶。所得气凝胶的压缩模量高达23.9 MPa，相应的比模量为69.92 m2/s2。原位引入镁铝层状双氢氧化物（MgAl LDH）可使PCB凝胶的释热速率降低91.6%，达到释热峰值的时间延长至115 s。同时，对苯二甲酸（TPA）可有效回收，纯度高达99.7%。在此基础上，提出了一种包含4个评价参数的综合可持续性评价方法，以评价和比较最近的回收方法。

引用次数: 0

Magnetically reduced graphene oxide-modified NiFe2O4/Bi2WO6 S-scheme photocatalyst for photodegradation of RhB under visible light 磁还原氧化石墨烯修饰NiFe2O4/Bi2WO6 s方案光催化剂在可见光下光降解RhB

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

Materials Research Bulletin

Pub Date : 2025-12-26 DOI: 10.1016/j.materresbull.2025.113981

Yingying Zhang, Xiaowei Li

The rapid development of industrial economies has intensified environmental pollution and energy shortages. In this study, a ternary magnetic S-scheme heterojunction photocatalyst, RGO/NiFe₂O₄/Bi₂WO₆, was synthesized via a one-pot solvothermal method. Results show that the incorporation of RGO/NiFe₂O₄ significantly enhances the material's light absorption capacity and charge separation efficiency. The optimal composite achieved a 94.8% degradation rate of Rhodamine B within 60 min under visible-light irradiation, with a reaction rate 2.4 times that of pure Bi₂WO₆. The performance improvement is primarily attributed to the synergistic effect of RGO as an electron-conducting network and the S-scheme charge-transfer mechanism between NiFe₂O₄ and Bi₂WO₆, which effectively promotes the spatial separation of electron-hole pairs while preserving strong redox potentials. Moreover, the magnetic property of NiFe₂O₄ enables rapid catalyst recovery, highlighting the design superiority of integrating charge-transfer enhancement with magnetic recyclability in a ternary system.

工业经济的快速发展加剧了环境污染和能源短缺。本研究采用一锅溶剂热法制备了RGO/NiFe2O4/Bi2WO6三元磁性S-scheme异质结光催化剂。结果表明，RGO/NiFe2O4的掺入显著提高了材料的光吸收能力和电荷分离效率。最优复合材料在可见光照射下，60 min内对罗丹明B的降解率为94.8%，是纯Bi2WO6的2.4倍。性能的提高主要是由于RGO作为电子传导网络的协同作用以及NiFe2O4和Bi2WO6之间的S-scheme电荷转移机制，有效地促进了电子-空穴对的空间分离，同时保持了强氧化还原电位。此外，NiFe2O4的磁性使催化剂能够快速回收，突出了三元体系中电荷转移增强与磁性可回收性相结合的设计优势。

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引用次数: 0

Synergistic dual-template engineering of hollow CoNi-LDH/rGO architectures for exceptional bifunctional electrocatalytic and supercapacitor performance 空心CoNi-LDH/rGO结构的协同双模板工程，具有卓越的双功能电催化和超级电容器性能

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

Materials Research Bulletin

Pub Date : 2025-12-26 DOI: 10.1016/j.materresbull.2025.113980

Wenhua Zhao , Qimeng Zhang , Quan Gan , Niandu Wu , Zhifang Qiu , Yongchun Ye , Xiaodie Zhao , Zhiqiang Wei , Xiaoling He

Herein, we demonstrate a rational dual-template strategy to construct a hierarchical hollow core-shell heterostructure composed of α-phase cobalt-nickel layered double hydroxide integrated with a conductive reduced graphene oxide matrix (CoNi-LDH/rGO). The ZIF-67 metal-organic framework template directs the formation of a well-defined hollow architecture, while the graphene oxide template, subsequently reduced, simultaneously suppresses structural aggregation and establishes an express electron transport network. This synergistic templating yields a material with an expanded interlayer spacing (0.245 nm), a high specific surface area, and a favorable electronic structure with abundant Ni³⁺ active sites. As an oxygen evolution reaction (OER) electrocatalyst, the optimized CoNi-LDH/rGO achieves an ultralow overpotential of 207 mV at 10 mA cm⁻² and outstanding long-term stability. As a battery-type supercapacitor electrode, it delivers a remarkable specific capacity of 1426.8 C g⁻¹ at 1 A g⁻¹ and excellent cycling durability (92.5% retention after 10,000 cycles).

在此，我们展示了一种合理的双模板策略，构建了由α-相钴-镍层状双氢氧化物与导电还原氧化石墨烯基体（CoNi-LDH/rGO）集成组成的分层中空核壳异质结构。ZIF-67金属有机框架模板指导形成明确的空心结构，而氧化石墨烯模板随后减少，同时抑制结构聚集并建立快速电子传递网络。这种协同模板产生的材料具有扩展的层间距（0.245 nm）、高比表面积和具有丰富Ni³⁺活性位点的有利电子结构。作为析氧反应（OER）电催化剂，优化后的CoNi-LDH/rGO在10 mA cm（⁻²）下具有207 mV的超低过电位，并具有良好的长期稳定性。作为一种电池型超级电容器电极，它提供了1426.8 C g⁻¹的非凡比容量和良好的循环耐久性（10,000次循环后保持92.5%）。

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引用次数: 0

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