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A novel molecule-engineered TBrPP/NiO hybrid with significantly enhanced photocatalytic efficiency for removing tetracycline hydrochloride from real pharmaceutical wastewater 一种新型分子工程TBrPP/NiO杂合物,其光催化效率显著提高,可用于去除实际制药废水中的盐酸四环素
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-06 DOI: 10.1016/j.jallcom.2026.186680
Xufei Chen, Yangqing He, Xue Wu, Yue Liu, Sitong Gao, Zhanying Ma
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引用次数: 0
Tailoring phase volume fraction and martensitic transformation in Al Co20Fe20Ni60- alloys via Al/Ni ratio for enhanced strength and ductility 通过Al/Ni比调整Al Co20Fe20Ni60-合金的相体积分数和马氏体相变,以提高强度和延展性
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-06 DOI: 10.1016/j.jallcom.2026.186649
Haoyue Wu, Yunzi Liu, Jian Chen, Rengen Ding, Xueyang Zhou, Shuaidan Lu, Jiahua He, Weili Wang
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引用次数: 0
Structural, optical, photoreponse properties of β-TeO₂ epitaxial Film fabricated via PLD method PLD法制备β-TeO 2外延膜的结构、光学和光响应特性
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-06 DOI: 10.1016/j.jallcom.2026.186650
Jishi Cui, Yuankang Wang, Jin He, Chunlai Li, Hongdi Xiao
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引用次数: 0
Role of silicon in promoting exclusive Al2O3 formation on (Co32.4Cr26Ni33Al8Y0.6)100-Si medium-entropy alloys: Unraveling oxidation resistance mechanisms 硅在(Co32.4Cr26Ni33Al8Y0.6)100-Si中熵合金上促进排他Al2O3形成的作用:抗氧化机制
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-06 DOI: 10.1016/j.jallcom.2026.186653
Xincheng Rong, Qi Jiang, Xiaoqiang Li, Zhihao Qiu, Zhichao Zhang, Chao Yang
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引用次数: 0
Synergistic strengthening of microbands and nano-L12 precipitates for superior strength-ductility combination in a Co-Ni-Cr-Mo-Al-Ti system alloy 在Co-Ni-Cr-Mo-Al-Ti系合金中,微带和纳米l12相的协同强化使合金具有优异的强度-塑性组合
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-06 DOI: 10.1016/j.jallcom.2026.186654
Yushui Chen, Wentao Ma, Tiexu Peng, Miaomiao Li, Qiuyuan Hu, Qinghe Jia, Yage Liu, Zetai Wang, Ruobin Chang, Baoxi Liu, Bin Gan, Wei Fang
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引用次数: 0
Formation and Control of Fluorescent Linear Defects in Mg-RE Alloy Casings Mg-RE合金外壳荧光线状缺陷的形成与控制
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.jallcom.2026.186644
Zhi Song, Xiaoming Wang, Lunyong Zhang, Xianxing Wang, Haocheng Li, Jinglong Mi, Zenghui Cai, Hongxian Shen, Fuyang Cao, Jianfei Sun
To meet the lightweight demands of aerospace applications, rare-earth magnesium (Mg-RE) alloys are increasingly utilized. However, issues related to casting defects have grown more prominent, demanding detailed research and effective control. This study investigated the fluorescent linear defects observed in WE43 (Mg-Nd-Y-Zr) alloy casing components via sand mold low-pressure die castings (LPDC). The composition and structure characteristics of the linear defects were systematically revealed, and nanoindentation testing was conducted to quantitatively analyze the mechanical properties of linear defect oxide films. It was revealed that fluorescent linear defects are formed by multi-scale and multi-morphology double oxide films (bifilms). The oxide film demonstrated high mechanical strength, primarily attributable to its dense Y₂O₃ composition. Its hardness was 10.8 GPa and elastic modulus was 140.1 GPa. These mechanical properties enable the oxide film to maintain structural integrity during melt folding and convergence, thereby promoting the development of continuous linear defects. Analysis of the casting structure and mold filling flow field demonstrated that melt confluence and backflow during filling induce folding and entrapment of surface oxide films, resulting in the bifilms exhibiting linear fluorescence. Based on the regulation of the filling flow field,the designed inclusion collection unit effectively mitigated fluorescent linear defects in Mg-RE alloy castings by redirecting melt confluence and entrapping oxide inclusions within its designated region.
为了满足航空航天应用的轻量化需求,稀土镁(Mg-RE)合金得到越来越多的应用。然而,与铸造缺陷相关的问题日益突出,需要详细的研究和有效的控制。通过砂型低压压铸(LPDC)研究了WE43 (Mg-Nd-Y-Zr)合金外壳部件的荧光线形缺陷。系统地揭示了线性缺陷的组成和结构特征,并进行了纳米压痕测试,定量分析了线性缺陷氧化膜的力学性能。揭示了多尺度、多形态双氧化膜可形成荧光线状缺陷。氧化膜表现出很高的机械强度,主要是由于其致密的Y₂O₃成分。其硬度为10.8 GPa,弹性模量为140.1 GPa。这些机械性能使氧化膜在熔体折叠和收敛过程中保持结构完整性,从而促进连续线性缺陷的发展。对铸件结构和充型流场的分析表明,充型过程中的熔体融合和回流导致表面氧化膜的折叠和包裹,导致表面氧化膜呈现线性荧光。基于充填流场的调节,设计的夹杂物收集单元通过重定向熔体汇流,将氧化物夹杂物包裹在指定区域内,有效缓解了Mg-RE合金铸件的荧光线形缺陷。
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引用次数: 0
Fe–Cu Dual-Doped MnO2 Cathodes for High-Performance Fe2+ Ion Hybrid Capacitors 高性能Fe2+离子混合电容器用Fe-Cu双掺杂MnO2阴极
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.jallcom.2026.186489
Xin Dong, Zhengyan Hao, Yuan Yao, Liying Wang, Yue Yang, Yang Gao, Wei Lü, Xiaohan Zhang, Xuesong Li, Xijia Yang
Energy storage devices are crucial components of modern energy systems, playing a vital role in driving industrial development and facilitating societal progress. Among various candidates, iron-ion hybrid supercapacitors (IIHSs) have attracted considerable attention as a next-generation energy storage technology, owing to their ability to combine the charge-storage mechanisms of both batteries and supercapacitors. In this work, we report the synthesis of a flexible Fe3+/Cu2+ dual-doped MnO2 electrodes based on carbon cloth (FeCu-MnO2@CC) featuring nanospheres and tailored physicochemical properties through a one-step hydrothermal treatment. Under the synergistic regulation of Fe3+ and Cu2+, the physical adsorption kinetics process of Fe2+ is effectively accelerated. Moreover, the introduction of ascorbic acid into the Fe2+ electrolyte effectively suppressed spontaneous oxidation, thereby enhancing electrochemical stability. Benefiting from these design strategies, the resulting aqueous IIHS demonstrated an exceptional areal capacitance of 970.83 mF cm-2 at a current density of 1 mA cm-2 (809 F g-1 at 0.8333 A g-1) and maintained 74.75% of its initial capacitance after 20,000 charge–discharge cycles. In addition, the assembled flexible device maintained 58.9% of its capacitance after 10,000 cycles under mechanical deformation. These findings not only highlight the potential of MnO2-based electrodes for application in iron-ion energy storage systems but also offer valuable insights into advancing flexible and high-performance iron-ion energy storage devices.
储能装置是现代能源系统的重要组成部分,在推动产业发展、促进社会进步方面发挥着重要作用。在众多候选材料中,铁离子混合超级电容器(iihs)由于能够将电池和超级电容器的电荷存储机制结合起来,作为下一代储能技术受到了广泛关注。在这项工作中,我们报道了一种基于碳布(FeCu-MnO2@CC)的柔性Fe3+/Cu2+双掺杂MnO2电极,具有纳米球和定制的物理化学性质。在Fe3+和Cu2+的协同调节下,有效加速了Fe2+的物理吸附动力学过程。此外,在Fe2+电解质中引入抗坏血酸可以有效地抑制自发氧化,从而提高电化学稳定性。得益于这些设计策略,水性IIHS在1 mA cm-2电流密度(0.8333 a g-1电流密度为809 F -1)下的面电容达到了970.83 mF cm-2,并在20,000次充放电循环后保持了初始电容的74.75%。此外,组装的柔性器件在机械变形下经过10,000次循环后仍保持58.9%的电容。这些发现不仅突出了二氧化锰电极在铁离子储能系统中的应用潜力,而且为推进柔性和高性能铁离子储能装置提供了有价值的见解。
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引用次数: 0
Microstructural evolution and mechanical-physical performance of novel Cu-W-Te matrix composites reinforced with reduced graphene oxides nanopowders 还原氧化石墨烯纳米粉体增强Cu-W-Te基复合材料的微观组织演变及力学物理性能
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.jallcom.2026.186651
Weipeng Zhao, Zhongqiang Zhang, Zekun Zheng, Wei Shang, Fufa Wu, Minghua Chen, Longlong Dong
For Cu matrix composites (CuMCs), the introduction of low-dimensional graphene nano-materials into a three-dimensional metallic matrix is commonly applied to enhance the mechanical and physical properties of Cu. However, the interfaces between the graphene and Cu matrix are always a major issue for achieve enhanced effects. Herein, we simultaneously introduced nanoscale 0.5 wt% W and 0.3 wt% Te powders into the reduced graphene oxides (rGO)/Cu matrix to improve the interfacial bonding strength and strengthen the matrix, respectively. This novel Cu matrix composite was fabricated using spark plasma sintering at 950 oC and followed by hot rolling at 700 oC and 750 oC, respectively. The presence of networked W and Te particles at the Cu grain boundaries serves to enhance the wettability at the rGO-Cu interface. Notably, the Cu/rGO interface was clean and devoid of any interfacial phases. The electrical conductivity of all hot-rolled samples exceeded 85% IACS. The 0.3 wt% rGO/Cu-0.5W-0.3Te composites after hot rolling at 700 oC exhibited the highest yield strength (213 MPa) and tensile strength (262 MPa), representing increases of 21.7% and 17.5% compared to pure Cu matrix, respectively. The engineered process enhanced rGO/Cu interface adhesion through interfacial structural manipulation, thereby further enhancing the strength of Cu composites. This work underscores the importance of effective dispersion of the rGO and interfacial structural approaches for enhancing composites’ performance, while also offering novel insights for the preparation of high-performance nanocomposites.
对于Cu基复合材料(CuMCs),通常采用在三维金属基体中引入低维石墨烯纳米材料来增强Cu的力学和物理性能。然而,石墨烯和铜基体之间的界面一直是实现增强效果的主要问题。在此,我们同时将0.5 wt% W和0.3 wt% Te纳米级粉末引入还原石墨烯氧化物(rGO)/Cu基体中,分别提高了界面结合强度和增强了基体。采用火花等离子烧结,分别在950℃和700℃、750℃进行热轧,制备了新型Cu基复合材料。Cu晶界处网状W和Te粒子的存在有助于增强rGO-Cu界面的润湿性。值得注意的是,Cu/rGO界面干净,没有任何界面相。所有热轧试样的电导率均超过85% IACS。经700℃热轧后的0.3 wt% rGO/Cu-0.5 w -0.3 te复合材料的屈服强度达到213 MPa,抗拉强度达到262 MPa,分别比纯Cu基体提高了21.7%和17.5%。该工艺通过界面结构操纵增强了rGO/Cu界面的附着力,从而进一步提高了Cu复合材料的强度。这项工作强调了还原氧化石墨烯的有效分散和界面结构方法对提高复合材料性能的重要性,同时也为高性能纳米复合材料的制备提供了新的见解。
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引用次数: 0
Elastocaloric cooling and superelasticity anisotropy in dual-textured equiatomic NiTi alloys 双织构等原子NiTi合金的弹热冷却和超弹性各向异性
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.jallcom.2026.186639
Guoxin Pang, Zhubin He, Junqing Guo, Nan Xiang, Yanchao Jiang, Guoqing Chen
This study investigated the effects of two types of textures, {110}<110> and {001}<110>, on the anisotropy of superelasticity and elastocaloric cooling (EC) effect in NiTi alloys. Cyclic tensile tests were conducted along various deformation directions angles (θ) between the rolling direction (RD) and the transverse direction (TD). The results demonstrated that as the texture intensity weakens and the content of dislocations and stable martensite decrease, the degree of superelastic anisotropy of the samples along different deformation directions θ also diminished. In contrast, the anisotropy of the samples' EC effect remained unaffected. By calculating the theoretical transformation strains (εₜₕₑₒ) in different θ, it was found that for samples with an identical microstructure, the anisotropy observed in the EC effect was governed by the anisotropy of εₜₕₑₒ. On contrary, the anisotropy of superelasticity was influenced by the synergistic coupling of εₜₕₑₒ anisotropy, dislocation density, and stable martensite content.
研究了{110}<;110>;和{001}<;110>;两种织构对NiTi合金超弹性和弹热冷却(EC)效应各向异性的影响。沿轧制方向(RD)与横向方向(TD)之间的不同变形方向角(θ)进行循环拉伸试验。结果表明:随着织构强度的减弱、位错和稳定马氏体含量的降低,试样沿不同变形方向θ的超弹性各向异性程度也随之降低。相比之下,样品的电火花效应的各向异性没有受到影响。通过计算不同θ下的理论转变应变(ε行踪ₕₑₒ),发现对于相同微观结构的样品,EC效应所观察到的各向异性受ε行踪ₕₑₒ的各向异性支配。相反,超弹性材料的各向异性受到ε ~ₕₑₒ各向异性、位错密度和稳定马氏体含量的协同耦合的影响。
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引用次数: 0
Relay dissolution of metal ions for an anion-cation dual-vacancy electrocatalyst toward alkaline oxygen evolution reaction 阴离子-阳离子双空位电催化剂对碱性析氧反应金属离子的接力溶解
IF 6.2 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.jallcom.2026.186524
Ruo-Xin Wang, Ning Yu, Jin-Ming Xu, Hao-Zheng Liu, Li Yuan, Jun Nan, Ren-Qing Lv, Bin Dong, Yong-Ming Chai
Catalyst deactivation caused by metal dissolution has constrained high-performance nickel-iron-based electrocatalyst development. This study innovatively repurposes metal dissolution as a structural design strategy. Cr-doped NiFe-layered double hydroxide is synthesized, and a dual-activation strategy with descending alkali concentration enables relay Fe/Cr dissolution, constructing a dual anion-cation vacancy catalyst. During pre-activation, Fe dissolves readily to form cation vacancies, whereas Cr, with its low-spin t₂g³ configuration, stabilizes the framework via a more robust octahedral structure. During electro-activation, oxygen vacancies are formed while Cr relay dissolution creates cation vacancies. The dissolved Cr³⁺ oxidizes to CrO₄²⁻, which partly re-adsorbs on the surface. These vacancies and adsorbed anions synergistically tune active-site electronics, boosting OER performance. The resulting dR-NiFeCr-LDH catalyst requires overpotentials of only 235 and 284 mV to achieve current densities of 100 and 1000 mA cm⁻², respectively. It also maintains stable operation for over 120 hours under a high current density of 1 A cm⁻² in a strongly corrosive 1 M KOH environment.
金属溶解引起的催化剂失活限制了高性能镍铁基电催化剂的发展。本研究创新性地将金属溶解作为结构设计策略。合成了掺杂Cr的nife层状双氢氧化物,采用碱浓度下降的双活化策略,实现了Fe/Cr的接力溶解,构建了双阴离子-阳离子空位催化剂。在预活化过程中,Fe容易溶解形成阳离子空位,而Cr由于其低自旋t₂g³构型,通过更坚固的八面体结构稳定了框架。在电活化过程中,形成氧空位,而Cr继电器的溶解产生阳离子空位。溶解后的Cr³⁺氧化为CrO₄²⁻,并部分重新吸附在表面。这些空位和吸附的阴离子协同调节活性位点电子,提高OER性能。得到的dR-NiFeCr-LDH催化剂只需要235 mV和284 mV的过电位就能分别达到100 mA和1000 mA cm⁻²的电流密度。在1m KOH的强腐蚀性环境中,在1cm⁻²的高电流密度下,它也能保持120小时以上的稳定运行。
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引用次数: 0
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Journal of Alloys and Compounds
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