Materials Chemistry and Physics最新文献_第6页

Effect of natural phosphate incorporation on the structural, thermal, and optical properties of a 50Na2O–50P2O5 glass system 天然磷酸盐掺入对50na20 - 50p2o5玻璃体系结构、热学和光学性能的影响

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-02-10 DOI: 10.1016/j.matchemphys.2026.132197

Y. Kherazi , A. El Boukili , L. Boudad , M. Chafi , M. El Amraoui , M. Taibi

{"title":"Effect of natural phosphate incorporation on the structural, thermal, and optical properties of a 50Na2O–50P2O5 glass system","authors":"Y. Kherazi , A. El Boukili , L. Boudad , M. Chafi , M. El Amraoui , M. Taibi","doi":"10.1016/j.matchemphys.2026.132197","DOIUrl":"10.1016/j.matchemphys.2026.132197","url":null,"abstract":"<div><div>This study explores the use of Moroccan natural phosphate (NP) as a sustainable resource for synthesizing a 50Na<sub>2</sub>O–50P<sub>2</sub>O<sub>5</sub> (mol%) was modified by adding NP in varying weight percentages (x = 0 to 80 wt%) via the melt-quenching method. The introduction of NP functions predominantly as a network modifier due to its high CaO content, inducing significant changes in the glass's structural and physical characteristics. XRD analysis confirmed the amorphous nature of the as-prepared glasses, revealing that NP addition promotes structural homogenization by reducing phase separation. Spectroscopic analyses (FTIR and Raman) demonstrated a clear depolymerization of the glass network, evidenced by the transformation of metaphosphate (Q<sup>2</sup>) units into pyrophosphate (Q<sup>1</sup>) units. This structural shift led to an initial increase in thermal stability, with the 40 wt% NP composition exhibiting optimal resistance to devitrification. The optical band gap (Eg) decreased from 3.88 to 3.51 eV, while the Urbach energy (Eu) dropped from 1.01 to 0.17 eV, indicating enhanced structural ordering. Upon annealing, the glasses crystallized into various sodium and calcium phosphate phases, confirming the structural transition from metaphosphate to pyrophosphate. This study successfully demonstrates that industrial-grade natural phosphate can be a viable and effective raw material for fabricating functional glasses with tunable properties.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132197"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Carbon nanotube-reinforced Ni nanowires of superior strength 具有超强强度的碳纳米管增强镍纳米线

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-02-06 DOI: 10.1016/j.matchemphys.2026.132198

Mustapha Makan, Abdelhadi Makan, Abdelouafi El Ghoulbzouri

{"title":"Carbon nanotube-reinforced Ni nanowires of superior strength","authors":"Mustapha Makan, Abdelhadi Makan, Abdelouafi El Ghoulbzouri","doi":"10.1016/j.matchemphys.2026.132198","DOIUrl":"10.1016/j.matchemphys.2026.132198","url":null,"abstract":"<div><div>Nickel nanowires (NiNWs) exhibit unique mechanical properties that are strongly influenced by their size, crystallographic orientation, and presence of defects. In this study, the mechanical behavior of NiNWs under various configurations, including pristine (full and hollow), CNT-embedded, and CNT-coated NiNWs, was investigated using molecular dynamics simulations. The effects of void defects (surface and internal) and reinforcement provided by single-walled and double-walled carbon nanotubes (SWCNTs and DWCNTs) were systematically examined. The results revealed that the <111> orientation consistently exhibited higher strength and stiffness than the <001> orientation owing to the dense atomic packing and slip resistance. Voids significantly weakened the NiNWs, with surface voids being more detrimental in the <111> orientation and internal voids being more detrimental in the <001> orientation. The dislocation density evolution and void surface area reduction confirmed the void-induced plasticity mechanisms. Embedding SWCNTs or DWCNTs into hollow NiWNs enhanced their mechanical performance, with DWCNTs providing superior reinforcement. The CNT-embedded NiNWs exhibited a higher yield strength, more pronounced strain hardening, and reduced void-induced weakening. However, the most significant improvement was achieved by coating the NiNWs with SWCNTs or DWCNTs, leading to a remarkable increase in the ultimate tensile strength (up to 511%) and near-complete mitigation of void-induced weakening. Interfacial energy analysis revealed strong mechanical coupling and confinement in the coated systems. These findings highlight the critical role of interface design and CNT reinforcement strategies in enhancing the mechanical properties and defect tolerance of NiNWs for potential applications in nanoelectronics, catalysis and nanorobotics.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132198"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular dynamics study on morphology influence of deposited graphene-based nanosheets on the tensile properties of calcium silicate hydrate composites 沉积石墨烯基纳米片形貌对水化硅酸钙复合材料拉伸性能影响的分子动力学研究

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.matchemphys.2026.132172

Yuting Qi , Shuaijie Lu , Siyao Wang , K.M.V.A.U. Bandara , Weiqiang Chen , Peng Qian , Yuan Gao

{"title":"Molecular dynamics study on morphology influence of deposited graphene-based nanosheets on the tensile properties of calcium silicate hydrate composites","authors":"Yuting Qi , Shuaijie Lu , Siyao Wang , K.M.V.A.U. Bandara , Weiqiang Chen , Peng Qian , Yuan Gao","doi":"10.1016/j.matchemphys.2026.132172","DOIUrl":"10.1016/j.matchemphys.2026.132172","url":null,"abstract":"<div><div>Graphene-based nanosheets (GNS) have great potential in enhancing cementitious composites, but their widespread application is limited by high costs and agglomeration issues. Recently, a negative-carbon, high-dispersion, cost-effective approach for nano-cement production was developed by combining GNS-reinforced cementitious composite preparation with methane catalytic pyrolysis. However, the influence of GNS deposition morphology on composite performance remains insufficiently understood. To address this, this study employed molecular dynamics (MD) simulation to systematically investigate the effect of four typical deposited GNS morphologies (flat, rippled, self-adhered, and collapsed) on the tensile properties of calcium silicate hydrate (C–S–H) composites. Results indicate that non-planar morphologies increase ductility by 15.9-125.6% and strain energy density by 15.8-122.0% compared to previously reported idealized graphene oxide. Notably, the reinforcing effect of the collapsed GNS on C–S–H is outstanding, improving the ductility and strain energy of the composites by 59.5-122% and 94.6-166.9%, respectively. Benefiting from its compact stacked structure, the collapsed GNS could delay crack propagation by restricting interlayer slip and stress transfer. Furthermore, we proposed a crack-bridging reinforcement theoretical model to demonstrate that GNS morphology affects stress concentration during partial delamination and pull-out, ultimately influencing nanosheet pull-out length and delaying matrix failure. The outcome of the current study not only deepens the understanding of the microscopic mechanism of GNS-enhanced cement-based materials but also advances the practical application of nano-engineering in the cement industry.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132172"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Research on modification of viscoplastic solidification equation and constitutive behavior based on high-temperature rheological properties of Al6061 alloy 基于Al6061合金高温流变特性的粘塑性凝固方程修正及本构行为研究

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.matchemphys.2026.132187

Junpeng Zhang , Xinyu Jia , Qin Liu , Rui Guan , Cheng Ji , Xingang Ai , Shengli Li

{"title":"Research on modification of viscoplastic solidification equation and constitutive behavior based on high-temperature rheological properties of Al6061 alloy","authors":"Junpeng Zhang , Xinyu Jia , Qin Liu , Rui Guan , Cheng Ji , Xingang Ai , Shengli Li","doi":"10.1016/j.matchemphys.2026.132187","DOIUrl":"10.1016/j.matchemphys.2026.132187","url":null,"abstract":"<div><div>In the numerical simulation modeling of semi-solid metal deformation, accurately determining the onset of metal viscoplastic deformation and employing high-quality constitutive equations are of paramount importance for simulating viscoplastic rheological behavior in the semi-solid state. Rheological parameters related to the critical solid volume fraction for viscoplasticity, along with other pertinent valuable parameters, are typically utilized as computational foundations for predicting the occurrence of viscoplastic deformation and simulating material flow responses. Therefore, this study conducted a fundamental analysis of the hot-working constitutive behavior of Al6061 alloy. By introducing cohesion c to further refine and optimize the viscoplastic equation, the rheological parameters <em>A</em> and <em>B</em> associated with the solid volume fraction were redefined. Building upon this, a modified Johnson-Cook (JC) constitutive model was developed to characterize the rheological behavior of Al6061 alloy during semi-solid processing, significantly reducing its prediction error from 24.02% to 7.87%, and the prediction accuracy increased by 67.5%. This enhancement markedly improved the model's capability to describe complex rheological behaviors under non-equilibrium solidification conditions.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132187"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Synergistic engineering of prelithiation and carbon coating for silicon microsphere anodes in advanced Li-ion batteries 先进锂离子电池硅微球阳极预锂化与碳包覆协同工程

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-01-31 DOI: 10.1016/j.matchemphys.2026.132163

Pedda Masthanaiah Ette , Sajjad Mohsenpour , Xavier Michaud , Allen Sandwell , Seonghwan Kim , Simon Park , Chaneel Park

{"title":"Synergistic engineering of prelithiation and carbon coating for silicon microsphere anodes in advanced Li-ion batteries","authors":"Pedda Masthanaiah Ette , Sajjad Mohsenpour , Xavier Michaud , Allen Sandwell , Seonghwan Kim , Simon Park , Chaneel Park","doi":"10.1016/j.matchemphys.2026.132163","DOIUrl":"10.1016/j.matchemphys.2026.132163","url":null,"abstract":"<div><div>Despite notable progress in understanding interfacial mechanisms and the alloying–dealloying behavior of nanostructured silicon anodes, significant challenges remain in meeting the performance standards necessary for commercialization. Specifically, these include charge-induced large volume changes, redundant side reactions with the electrolyte, and poor initial coulombic efficiency. Herein, we report a method of pre-lithiation of silicon microspheres followed by conformal carbon coating (PL-Si/C). The resulting products exhibited an enhanced ICE of 84.2% and a stable reversible capacity of ∼1600 mA h/g at a 0.5C rate, with 83% retention, compared to spray-dried silicon microspheres (Si-MS), which showed 77.6% ICE and 81% retention. When integrated with graphite, PL-Si/C shows 90% ICE and 79.5% retention after 200 cycles at 1C rate, while Si-MS shows 62.5% capacity retention. The cycling stability of materials can be credited to the unique microsphere morphology in which Si nanodomains are embedded in carbon nanotube interwoven amorphous lithium silicate (Li<sub>x</sub>SiO<sub>y</sub>) matrix, followed by conformal carbon coating using the chemical vapor deposition technique. The primary layer acts as a buffering medium during volume expansion, suppresses initial lithium loss, and enhances ICE. Further carbon coating supports the mechanical integrity. Further to realize the practical applicability of the material, full cells were tested with lithium and LiNCA cathodes.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132163"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Antibacterial characteristics and accelerated degradation of ZnCu-filled poly(L-lactide) scaffold 锌填充聚l -丙交酯支架的抗菌特性及加速降解

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.matchemphys.2026.132182

Long Liu , Jiamin Li , Yichao Wu , Jian Liu , Wenjun Fang , Shu Wen , Zongming Zhu

{"title":"Antibacterial characteristics and accelerated degradation of ZnCu-filled poly(L-lactide) scaffold","authors":"Long Liu , Jiamin Li , Yichao Wu , Jian Liu , Wenjun Fang , Shu Wen , Zongming Zhu","doi":"10.1016/j.matchemphys.2026.132182","DOIUrl":"10.1016/j.matchemphys.2026.132182","url":null,"abstract":"<div><div>Poly-<span>l</span>-lactide (PLLA) is a promising bone implant material because of its favorable biocompatibility, biodegradability and outstanding processability. Nevertheless, it lacks antibacterial activity, which greatly limits its clinical application. In this study, degradable ZnCu particles were incorporated into PLLA scaffolds to endow them with antibacterial function via selective laser sintering. The mechanism was that copper ions and zinc ions released from the PLLA-ZnCu scaffold could kill bacteria by damaging cell membrane integrity, inactivating enzymes and restraining deoxyribonucleic acid replication. The relative bacterial viability of <em>Escherichia coli</em> and <em>Staphylococcus aureus</em> incubated with the PLLA-8ZnCu scaffold for 48 h was only 6.4 ± 1.7% and 9.4 ± 2.7%, respectively. Meanwhile, the weight loss percentage of the PLLA-16ZnCu scaffold (6.47 ± 0.2%) was approximately three times greater than that of the PLLA scaffold (1.89 ± 0.17%). The larger weight loss was mainly attributed to the acid-alkali neutralization reaction occurring between the alkaline degradation product of the ZnCu particles and the acidic degradation product of the PLLA matrix, which could simultaneously promote the degradation of both ZnCu particles and the PLLA matrix, ultimately accelerating scaffold degradation. Besides, the compressive strength and elastic modulus of the PLLA-ZnCu scaffolds were also enhanced owing to the dispersion strengthening effect of ZnCu particles. In addition, the PLLA-ZnCu scaffolds exhibited excellent cell viability and adhesion. These results suggest that the PLLA-ZnCu scaffold may be a potential candidate material for orthopedic implants.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132182"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Upcycling waste paper into carbon dot; AgI composites for efficient pesticide degradation 将废纸升级为碳点；高效降解农药的AgI复合材料

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-02-08 DOI: 10.1016/j.matchemphys.2026.132205

Bosely Anne Bose , Abhijit Saha , Ange Nzihou , Nandakumar Kalarikkal

{"title":"Upcycling waste paper into carbon dot; AgI composites for efficient pesticide degradation","authors":"Bosely Anne Bose , Abhijit Saha , Ange Nzihou , Nandakumar Kalarikkal","doi":"10.1016/j.matchemphys.2026.132205","DOIUrl":"10.1016/j.matchemphys.2026.132205","url":null,"abstract":"<div><div>Organic pesticides are persistent pollutants that accumulate in the environment, posing serious risks to ecosystems and human health, particularly through contamination of water resources. Photocatalytic degradation offers a sustainable and efficient approach for eliminating these pesticides, providing a green solution for environmental remediation. In this study, we report a sustainable, eco-friendly approach to synthesizing carbon dots (CDs) from waste paper and incorporating them into silver iodide (AgI) to form highly efficient visible-light photocatalyst composites. The CDs, derived from waste paper, offer advantages of low cost, low toxicity, and excellent water solubility. The integration of CDs into AgI significantly enhances charge transfer and suppresses electron–hole recombination. The resulting AgI–CD composites exhibited superior photocatalytic activity (97% in 150 min) for the degradation of the pesticide Thiram, with the composite containing 10 wt% CD achieving the highest performance. This study not only provides a green recycling route for waste paper but also demonstrates the potential of AgI–CD composites for effective environmental remediation.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132205"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms limiting silver incorporation in bioactive PEO-Ag coatings on Ti6Al4V 限制银在Ti6Al4V表面生物活性PEO-Ag涂层中掺入的机制

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-01-30 DOI: 10.1016/j.matchemphys.2026.132165

K.A. Kuptsov , A.N. Sheveyko , A.A. Pavlova , S.E. Semenova , T.O. Teplyakova , P.A. Loginov , B. Subramanian , D.V. Shtansky

{"title":"Mechanisms limiting silver incorporation in bioactive PEO-Ag coatings on Ti6Al4V","authors":"K.A. Kuptsov , A.N. Sheveyko , A.A. Pavlova , S.E. Semenova , T.O. Teplyakova , P.A. Loginov , B. Subramanian , D.V. Shtansky","doi":"10.1016/j.matchemphys.2026.132165","DOIUrl":"10.1016/j.matchemphys.2026.132165","url":null,"abstract":"<div><div>Plasma electrolytic oxidation (PEO) is a promising technique for depositing bioactive coatings on titanium implants, but incorporating silver for antibacterial functionality while maintaining osteointegrative properties remains a critical challenge. This study systematically investigates the mechanisms limiting silver incorporation in PEO coatings on additively manufactured Ti–6Al–4V substrates and proposes practical solutions.</div><div>Coatings were formed in a phosphate-silicate electrolyte with AgNO<sub>3</sub> additions (0–5 g/L) using bipolar pulsing (cathodic: −80 V, 50 μs; anodic: +350 V, 100 μs) at 500 Hz. Multi-technique characterization (SEM/EDS, Raman, TEM, XRD, XPS, and electrochemical testing) revealed that AgNO<sub>3</sub> concentrations exceeding 2 g/L trigger “cauliflower” defects through cathodic galvanic reduction of Ag<sup>+</sup>, forming conductive dendrites that localize arc discharges, deplete Ca/P content, and promote spallation. In contrast, anodic-only pulsing minimizes silver incorporation but preserves coating integrity. Notably, the PEO-3Ag coating demonstrated potent broad-spectrum antibacterial activity against multidrug-resistant pathogens without compromising cell viability (97 % osteosarcoma cell survival). Ion release analysis and electrolyte chemistry revealed that silver phosphate precipitation competes with coating incorporation, further explaining why higher AgNO<sub>3</sub> concentrations do not linearly increase silver in the coating.</div><div>These findings demonstrate a self-reinforcing defect mechanism and identify silver phosphate precipitation as an additional competing reaction, that allows to choose electrolyte composition yelding in coatings with high silver loading (∼1 at.%) while maintaining the bioactive composition and cytocompatibility essential for successful implantation.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132165"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of homemade screen-printed nickel nanoparticles/boron-doped diamond electrode for electrochemical degradation of methyl orange 自制网印纳米镍/掺硼金刚石电极电化学降解甲基橙的制备

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-01-29 DOI: 10.1016/j.matchemphys.2026.132145

Syasya Nadia Rahmah , Mai Tomisaki , Ilma Amalina , Mirza Ardella Saputra , Prastika Krisma Jiwanti

{"title":"Fabrication of homemade screen-printed nickel nanoparticles/boron-doped diamond electrode for electrochemical degradation of methyl orange","authors":"Syasya Nadia Rahmah , Mai Tomisaki , Ilma Amalina , Mirza Ardella Saputra , Prastika Krisma Jiwanti","doi":"10.1016/j.matchemphys.2026.132145","DOIUrl":"10.1016/j.matchemphys.2026.132145","url":null,"abstract":"<div><div>Water pollution caused by synthetic dyes, particularly Methyl Orange (MO), poses significant environmental challenges. MO can be toxic to aquatic life, affecting ecosystems when released into water bodies. Exposure to long and high concentrations may pose health risks to humans, including potential carcinogenic effects. Due to this risk, degradation of MO in environment is emerging. This study explores the electrochemical degradation of MO using boron-doped diamond nanoparticles (BDD NP) modified with nickel nanoparticles (NiNP). NiNP were synthesized via chemical reduction and integrated with BDD NP at different ratios (1:2, 1:3, and 1:5). The composite was then screen-printed onto the polyimide film. Electrochemical degradation experiments revealed that the NiNP/BDD B (1:3) electrode exhibited the highest efficiency, being twice more efficient compared to the BDD printed electrode at potential of +3 V (vs. Ag/AgCl). The enhanced performance is attributed to increased electroactive surface area and optimized hydroxyl radical formation. These findings highlight the potential of NiNP-modified BDD electrodes for effective wastewater treatment.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132145"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing mechanical properties of WC-5Ni hardmetals via microwave sintering: Role of Mo, Si, Ti, and V additives in microstructure evolution and performance optimization 微波烧结增强WC-5Ni硬质合金的力学性能：Mo、Si、Ti和V添加剂在显微组织演变和性能优化中的作用

IF 4.7 3区材料科学

Materials Chemistry and Physics Pub Date : 2026-04-15 Epub Date: 2026-01-30 DOI: 10.1016/j.matchemphys.2026.132130

Ehsan Ghasali , Saleem Raza , Andrii Babenko , Li Jie , Touradj Ebadzadeh , Yasin Orooji

{"title":"Enhancing mechanical properties of WC-5Ni hardmetals via microwave sintering: Role of Mo, Si, Ti, and V additives in microstructure evolution and performance optimization","authors":"Ehsan Ghasali , Saleem Raza , Andrii Babenko , Li Jie , Touradj Ebadzadeh , Yasin Orooji","doi":"10.1016/j.matchemphys.2026.132130","DOIUrl":"10.1016/j.matchemphys.2026.132130","url":null,"abstract":"<div><div>In this research, four metallic additives (Mo, Si, Ti, and V) were incorporated into WC-5 wt%Ni hardmetals prepared via a rapid microwave sintering process. Five wt% of each additive was individually mixed with WC and Ni powders using a high-energy mixer mill to ensure a uniform distribution of the starting materials. After achieving homogeneity, bar-shaped green bodies were formed under a uniaxial pressure of 240 MPa. Microwave sintering was conducted at 1400, 1500, and 1600 °C without any holding time. XRD analysis revealed that WC was the dominant crystalline phase, while each system also exhibited reaction products such as carbides and intermetallic phases derived from the additives. SEM images of the polished sample surfaces showed a fine microstructure across all samples. Moreover, increasing the sintering temperature from 1400 to 1600 °C led to improved densification, as confirmed by calculated densities and mechanical property evaluations. The highest bending strength (876 ± 25 MPa), Vickers hardness (1728 ± 37 Hv) and Palmqvist fracture toughness (W<sub>K</sub>) (8.6 ± 0.2 MN m<sup>−3/2</sup>) were observed in the sample sintered at 1600 °C with the Ti additive, likely due to the formation of NiTi intermetallics and titanium carbide. In contrast, the sample sintered at 1400 °C with the Mo additive exhibited the lowest mechanical properties, probably because the formation of a Ni<sub>3</sub>Mo<sub>3</sub>C complex phase consumed the Ni binder.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132130"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146098819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0