Journal of Alloys and Compounds最新文献

{"title":"Multiple symmetry, site-selective spectrum and luminescence origin for rare earth ions doped materials","authors":"Tingyu Bao, Shanshan Jia, Yanyan Bu, Xiangfu Wang","doi":"10.1016/j.jallcom.2026.188094","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188094","url":null,"abstract":"Crystal sites, via the cross-correlation of symmetry, site occupancy, and luminescence multiplicity, unveil the intrinsic relationship between crystal structure and optical properties, constructing a crucial bridge between the microscopic structure and optical performance of crystals. However, the lack of a systematic classification system for crystal sites in trivalent rare earth ion-doped materials hinders in-depth exploration of their luminescence mechanism and the rational design of novel optical materials. To address this issue, this review aims to establish a standardized multidimensional classification system for crystal sites based on the Judd-Ofelt theory, focusing on materials doped with seven trivalent rare earth ions (Eu³⁺, Er³⁺, Nd³⁺, Tb³⁺, Sm³⁺, Ho³⁺, Dy³⁺). From the perspectives of site symmetry, site occupancy, and luminescence multiplicity, the paper elucidates the classification criteria of rare earth sites, the site selection tendency under the influence of different crystal environments, the transition behaviors of rare earth ions, spectral characteristics, and related applications. This work holds great practical significance for further exploring the luminescence origin of multisite optical materials, expanding the boundaries of optical applications, and driving technological innovation in related fields.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"5 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147719700","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}

{"title":"Lattice strain engineering enabling nickel sulfide for seawater splitting at high current density","authors":"You-li Sun, You-yi Sun, Yuxuan Zhang, Keqiang He, Takeshi Yanagida, Johnny C. Ho, SenPo Yip","doi":"10.1016/j.jallcom.2026.188042","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188042","url":null,"abstract":"The instability of transition metal sulfides (TMSs) electrocatalysts poses challenges in seawater splitting, particularly in the oxygen evolution reaction (OER). Lattice strain is an effective strategy to enhance the performance of TMSs. In this work, a lattice-strained Ni₃S₂ (NiFeCoS-LS) was synthesized via a facile room-temperature strategy, where the effective incorporation of Fe and Co induces substantial lattice strain that significantly improves the resistance to Cl⁻-induced corrosion during alkaline seawater oxidation. As a result, the NiFeCoS-LS catalyst exhibits exceptional long-term stability, maintaining stable performance for over 300<!-- --> <!-- -->hours at a current density of 0.5<!-- --> <!-- -->A<!-- --> <!-- -->cm^-2 in alkaline seawater electrolysis. In contrast, the hydrothermally synthesized NiFeCoS (NiFeCoS-HT), which lacks lattice strain, exhibits significantly reduced stability. The enhanced performance arises from the improved thermodynamic stability of Ni₃S₂ induced by lattice strain, which reinforces its structural robustness under operating conditions. Supported by theoretical calculations, the reconstruction and corrosion resistance behavior of NiFeCoS-LS were further elucidated. This work provides mechanistic insights into designing corrosion-resistant TMS-based electrocatalysts for effective seawater electrolysis.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"28 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681914","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}

{"title":"Enhanced Hyperthermia Efficiency by Zn-doped CoFe2O4 Magnetic Nanoparticle","authors":"Bintang Surya Bhakti, Glemarie C. Hermosa, I-Hsuan Li, Chiung-Fang Chang, Chien-Shiun Liao, , Sea-Fue Wang, An-Cheng Aidan Sun","doi":"10.1016/j.jallcom.2026.187983","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.187983","url":null,"abstract":"To improve the hyperthermia efficiency of spinel ferrite, we prepared Co₁₋ₓZnₓFe₂O₄ (x = 0.0-1.0) nanoparticles via a solvothermal route and systematically tuned their magnetic response through zinc substitution. X-ray diffraction confirmed single-phase spinel formation, with the lattice parameter increasing from <em>a</em> = 8.388<!-- --> <!-- -->Å (x = 0.0) to 8.469<!-- --> <!-- -->Å (x = 1.0). Vibrating-sample magnetometry revealed that Zn addition enhances magnetic saturation up to x = 0.2 while concurrently reducing coercivity, a combination favorable for efficient heat dissipation under alternating magnetic fields. X-ray photoelectron spectroscopy corroborated the cation distribution over octahedral and tetrahedral sites. Consistent with the magnetic trends, the specific absorption rate (SAR) in deionized water rises from 136<!-- --> <!-- -->W<!-- --> <!-- -->g⁻¹ at x = 0.0 to 222<!-- --> <!-- -->W<!-- --> <!-- -->g⁻¹ at x = 0.2. CCK-8 assays indicated good cytocompatibility, with ≥80% cell viability at 250<!-- --> <!-- -->µg<!-- --> <!-- -->mL⁻¹ for all samples. Collectively, these results identify moderate Zn substitution at x = 0.2 as the optimal strategy to balance enhanced magnetization and reduced coercivity, thereby yielding ferrite nanoheaters with improved hyperthermia performance and acceptable biocompatibility.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"5 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681913","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}

{"title":"Insights into the chemical composition of the cubic αc phase with 3d-transition metal elements V, Cr, Mn, Fe, Co, Ni, Cu, Zn as occurring in Al-Si alloys","authors":"H. Becker, L. Richter, A. Veverkova, A. Leineweber","doi":"10.1016/j.jallcom.2026.188077","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188077","url":null,"abstract":"The so-called cubic α_c phase is frequently present in recycled transition-metal containing Al−Si alloys, in intermetallic layers evolving during reactive diffusion occurring when bonding an Al alloy to a steel or cast iron, and even in meteorites. Thereby, the α_c phase is known for its broad homogeneity ranges and various morphologies. The present study provides own systematic results on the chemical composition of the α_c phase evolving in Fe-containing Al−Si alloys with the 3d-transition metal elements V, Cr, Mn, Co, Ni, Cu, Zn and combines these results with an extensive literature review. It is concluded that the α_c phase can be considered as a solid solution which spans a broad homogeneity range via thermodynamically connected multicomponent systems. That range originates from the ternary Al-Si-Mn system, reaches towards the ternary Al-Si-Fe system and exists without Mn also in the Al−Si−Fe−Cr, Al−Si−Fe−V and Al−Si−Fe−Cu systems. In order to dissolve Co and Ni, also presence of Mn or Cr is required. Zn was not detected in the α_c phase. Thereby, the α_c phase accepts a system-dependent Si content from 9-12 up to 6-17 at% while the total transition metal content scatters around the crystallographically ideal value of 17.4 at% except for higher contents with Cu. A phenomenological electron counting based analysis (Hume-Rothery like approach) of the structurally contributing number of electrons per atom shows that Fe, Cr and V contribute a similar number of electrons as Mn while Co and Ni contribute approx. 1 electron per atom fewer.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147719739","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}

{"title":"Emergent optical and magnetic functionalities in Holmium-activated β−Ga2O3 nanoparticles","authors":"Abhishek Sharma, Maneshwar Thakur, Vir Singh Rangra","doi":"10.1016/j.jallcom.2026.187828","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.187828","url":null,"abstract":"Holmium (Ho&lt;span&gt;&lt;math&gt;&lt;msup is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;mo is=\"true\"&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;) - doped &lt;span&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;β&lt;/mi&gt;&lt;mo is=\"true\" linebreak=\"goodbreak\" linebreakstyle=\"after\"&gt;−&lt;/mo&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;Ga&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;O&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; nanoparticles (1–3 wt.%) were synthesized via a solid-state combustion route to investigate the evolution of structural, vibrational, optical, luminescent, and magnetic properties. X-ray diffraction confirms the monoclinic &lt;span&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;β&lt;/mi&gt;&lt;mo is=\"true\" linebreak=\"goodbreak\" linebreakstyle=\"after\"&gt;−&lt;/mo&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;Ga&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;O&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; phase, with the emergence of a minor Ho&lt;span&gt;&lt;math&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;Ga&lt;span&gt;&lt;math&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;5&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;O&lt;sub&gt;12&lt;/sub&gt; phase at higher dopant concentrations, indicating a solubility limit between 1 and 2 wt.%. Williamson-Hall analysis reveals compressive strain at low doping followed by partial strain relaxation at higher concentrations due to ionic radius mismatch between Ho&lt;span&gt;&lt;math&gt;&lt;msup is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;mo is=\"true\"&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; (0.90 Å) and Ga&lt;span&gt;&lt;math&gt;&lt;msup is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;mo is=\"true\"&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; (0.62 Å) ions. Morphological analysis shows variations in grain size and distribution, while elemental mapping confirms uniform incorporation of Ho within the host lattice. FTIR spectra exhibit shifts in Ga-O vibrational modes, indicating local lattice distortion around the dopant sites. Optical studies show a gradual shift of the absorption edge toward higher energy with slight bandgap widening, attributed to defect-state redistribution and suppression of band-tail states, along with characteristic intra-&lt;span&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;4&lt;/mn&gt;&lt;mi is=\"true\"&gt;f&lt;/mi&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; absorption of Ho&lt;span&gt;&lt;math&gt;&lt;msup is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mn is=\"true\"&gt;3&lt;/mn&gt;&lt;mo is=\"true\"&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; ions. Photoluminescence (PL) exhibits broad blue emission originating from intrinsic defect states, with progressive quenching upon Ho incorporation due to increased non-radiative recombination and modification of the defect landscape. In contr","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"14 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147719740","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}

{"title":"Ethylene glycol-modified NiFe LDH as a bifunctional electrocatalyst for alkaline water electrolysis","authors":"Nguyen Anh Khoa Do, Thi Thuy Kieu Tran, Hoang Minh Le, Minh Thien Huynh, Van Man Tran","doi":"10.1016/j.jallcom.2026.188040","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188040","url":null,"abstract":"Developing cost-effective, durable, and efficient bifunctional electrocatalysts is essential for advancing green hydrogen production. Here, we report a rapid, one-step, room-temperature, corrosion-driven strategy for directly constructing nickel-iron layered double hydroxides (NiFe LDH) on nickel foam (NF), where the NF serves as both the conductive substrate and the sole Ni source. In an Fe³⁺-ethylene glycol (EG) solution, controlled corrosion of the NF surface released Ni²⁺, enabling in situ formation of NiFe LDH without external heating or additional Ni precursors. EG plays a dual regulatory role by moderating Fe³⁺ hydrolysis and solution viscosity, thereby controlling corrosion kinetics, nanosheet formation, and charge-transfer behavior. An optimal EG content enables balanced corrosion-reprecipitation growth and effective Fe incorporation. Further tuning of the Fe³⁺ concentration regulates the Ni/Fe ratio and reaction-dependent catalytic performance, highlighting the importance of balancing active-site accessibility and interfacial charge-transfer efficiency. The optimized electrode pair demonstrates efficient overall water-splitting with excellent durability and high Faradaic efficiency. This work provides mechanistic insight into EG-regulated, corrosion-driven LDH synthesis and offers a scalable and energy-efficient pathway for designing high-performance electrocatalysts for alkaline water electrolysis.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"83 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681911","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}

{"title":"Unveiling the interfacial strengthening mechanism of Mn-segregated Al-Cu-Mg-Ag/SiC composites: A multiscale investigation","authors":"Qiyue Wu, Haijiang Liu, Yan Feng, Richu Wang, Zhiyong Cai, Zongbo Li","doi":"10.1016/j.jallcom.2026.188031","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188031","url":null,"abstract":"Al-Cu-Mg-Ag/SiC composites have garnered considerable attention in the aerospace and rail transportation fields owing to their low density and outstanding high-temperature mechanical properties. In this study, the segregation behaviors of solute elements (Cu, Mg, Ag, Mn, Zr, Si, C) at the Al/SiC interface and their regulatory mechanisms regarding interfacial bonding and tensile strength are systematically elucidated by combining first-principles calculations with experimental characterization. The calculation results indicate that Mn, Si, and C atoms tend to segregate at the interface, significantly enhancing the interfacial bonding strength through the strengthening of covalent bonding. In contrast, Zr exhibits a slight tendency to weaken interfacial strength, while Cu, Mg, and Ag remarkably diminish it. Uniaxial tensile simulations reveal that the models doped with Mn demonstrate superior plasticity and strength, and its crack propagation affected zones cover multiple atomic layers, effectively alleviating stress concentration. Experiments show that the room-temperature yield strength of the Mn-containing composite reaches 552.9<ce:hsp sp=\"0.25\"></ce:hsp>MPa with an elongation of 6.7%, which is superior to alloys in the same series. TEM-EDS analysis confirms the co-segregation phenomenon of Mn, C, and Si at the interface, validating the theoretical predictions. In summary, Mn is a key alloying element for optimizing the interfacial mechanical properties of Al-Cu-Mg-Ag/SiC composites.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"19 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681088","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}

{"title":"Orientation-specific sintering kinetics of supersaturated Ag−Cu nanoalloy and Cu@Ag microparticles","authors":"Zhicheng Wen, Wei Liu, Shixin Huang, Hailong Lin, Xingwang Ran, Chunjin Hang, Rong An, Yanhong Tian","doi":"10.1016/j.jallcom.2026.188033","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188033","url":null,"abstract":"Crystal alignment during the coalescence of Ag–Cu alloy nanoparticles (NPs) and the bonding between NPs and Ag shell/Cu substrate were investigated to reveal the sintering mechanisms through both experiments and MD simulations. The near-perfectly aligned crystal lattices with a dihedral angle between {111} planes within approximately 20° will lead to a self-alignment coherent aggregation mediated by deformation twins/stacking faults (SFs). The initial high-angle misorientations of the two NPs drive the interfacial atoms into amorphous transformation so as to enable a direct bonding. However, a notably lower interfacial energy under specific high-angle rotations, 35°, 70°, and 110°[1−10](111), allows the crystal sequences between particles to maintain favorable matching. Furthermore, a direct bonding between Ag shell as well as Cu substrate and NPs has been evidenced to be feasible. Ag shells act as a stress buffer with a high density of SFs induced by lattice mismatch and plastic deformation. In MD simulations, similar phenomena with sintered NPs occurred owing to the activation of slips and climbs of dislocations to some extent, but the constrained short-range atomic diffusion leads to locally dislocation accumulation and resulting stress concentration within the NPs. Partial precipitation of homogeneous atoms with the substrates from the Ag–Cu nanoalloy leads to the formation of twins/SFs, which is promoted by the migration of point defects. The revealed orientation-dependent sintering kinetic mechanism in this work is expected to provide crucial guidance for the precise design of nanomaterials and composites with predetermined structures, compositions and interface properties.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"316 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147681197","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}

{"title":"Integration of Self-assembled Vanadium/Iron-Based Porphyrin MOF Nanocomposites on Textile via Hydrophilic-hydrophilic Interaction for Highly Selective Ethanolamine Sensor","authors":"Banalata Maji, Sushmee Badhulika","doi":"10.1016/j.jallcom.2026.188023","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188023","url":null,"abstract":"Textile-based gas sensors are highly desirable as they are highly sensitive, lightweight, portable, and enable scalable fabrication for the detection of toxic volatile organic compounds (VOCs) in real-time. In this study, we synthesized a novel vanadium-based porphyrin metal organic framework/iron tetrakis(4-carboxyphenyl)porphyrin (VPMOF/Fe-TCPP) composite via self-assembly method and dispersed in a mixture of cyclohexanol/terpineol solvent with 2<!-- --> <!-- -->wt.% ethyl cellulose to prepare sensing ink. Then, polylactic acid-based stencil mask is used to make an interdigitated pattern via screen-printing method to fabricate silk-based gas sensor for ethanolamine sensing. The detailed morphological investigation reveals a lamellar like structure of the composite consisting of sheet-type VPMOF with spindle-shaped Fe-TCPP rods. When exposed to ethanolamine, the sensor exhibits response to a wide dynamic range of 500 ppb to 15 ppm with response/recovery times of 84<!-- --> <!-- -->s/109<!-- --> <!-- -->s, respectively and low limit of detection (3σ/s) of 367 ppb. The composite sensor shows three times higher selectivity against seven other VOCs, excellent reproducibility with ~2.84% error, relative humidity response of 0.98 at 65% R_H towards 3.2 ppm of ethanolamine, and remarkable stability even under a bending position (90°) over a period of 35 days. The enhanced sensing performance is due to the heterointerface, large specific surface area (49.26 m²/g) along with mesopores (~8.68<!-- --> <!-- -->nm), presence of oxygen vacancies as confirmed by EPR signal (g = 2.003), increased number of chemisorbed oxygen (4.27% to 6.38%) determined by XPS analysis, and formation of hydrogen bonding between porphyrinic carboxylate groups, Fe(III) centers of Fe-TCPP and VPMOF surface, as confirmed from FTIR.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"55 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147666811","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}

{"title":"Tailoring the Microstructure and Mechanical Behavior of AFSD 6061 Aluminum Alloy through Heat Treatment","authors":"Tao Jiang, Mingtao Zhang, Guoqing Dai, Yanhua Guo, Zhonggang Sun, Wenya Li","doi":"10.1016/j.jallcom.2026.188026","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.188026","url":null,"abstract":"Additive friction stir deposition (AFSD), a solid-state additive manufacturing process, exhibits significant potential for the fabrication of aluminum alloys. However, the unique thermomechanical history of AFSD makes the heat treatment (HT) response of certain aluminum alloys unclear. In this study, 6061 aluminum alloy samples produced via AFSD were subjected to solution treatment at 535 °C for durations ranging from 10 to 50<!-- --> <!-- -->minutes in 30<!-- --> <!-- -->minutes increments, followed by artificial aging treatment at 165 °C for 6<!-- --> <!-- -->hours. The influence of solution time on microstructure evolution and mechanical properties was systematically investigated. With increasing solution time, the grain size increased from 68.57 μm to 185.41 μm. Compared to the as-deposited sample, anomalous grain growth (AGG) of varying degrees was observed. The proportion of high-angle grain boundaries (HAGBs) within the microstructure gradually increases with extended solution treatment time, while the density of geometrically necessary dislocations (GNDs) is significantly reduced. The uniform dispersion of fine β″ phases and β′ phases within the grains significantly enhances the mechanical properties. At a solution treatment time of 50<!-- --> <!-- -->minutes, the material exhibits a tensile strength of approximately 315.13<!-- --> <!-- -->MPa along the building direction (BD), a yield strength of 273.03<!-- --> <!-- -->MPa, and an elongation of 20.8%. Additionally, the microhardness after HT increases to 123.9 HV_0.1 relative to the as-deposited sample. This study demonstrates that shortening the solution treatment time mitigates the severity of abnormal grain growth (AGG) while simultaneously promoting the precipitation of strengthening phases, thereby optimizing the overall mechanical properties of the alloy.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"131 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147666812","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}