Results in Materials最新文献

{"title":"Fabrication of antimicrobial platinum-graphene/polypropylene Pt-GNPs/PP nanofilter for PMs capturing and high quality air","authors":"Amjed R. Qarahgouli,&nbsp;Khalid A. Sukkar,&nbsp;Alaa M. Ali","doi":"10.1016/j.rinma.2025.100688","DOIUrl":"10.1016/j.rinma.2025.100688","url":null,"abstract":"<div><div>Recently, the development of air filters has been spurred by air pollutants and the global epidemic of infectious illnesses and their effects on human health. Specifically, it has been noted that indoor air pollution rates are rising due to a variety of contaminants and microorganisms. As a result, novel air filters that are easy to use and have cheap production costs have to be produced. In this research have been fabricated new air nanofilters in hybrid performance for high-quality air in particulate matters capturing and antimicrobial activities. The air nanofilter is prepared by the integration of hybrid nanoparticles (Pt-GNPs) into polypropylene (PP) textiles by a coating method. The Pt-GNPs formed from graphene nanoparticles obtained from graphite via the modified Hummers' method and platinum ions from hexachloroplatinic acid. These nanofilters exhibit high particulate matters filtration efficiency reaching 93.16 % and a low pressure drop of 88.25 Pa. In addition, it was found when the GNPs/PP nanofilter was combined with other layers of sponge and cotton as auxiliary filters the efficiency increased to 99.03 %. Furthermore, the results demonstrated the ability of each sample to influence <em>E. coli</em> more than <em>S. aureus</em>, which provided killing activity reached 100 % at 0.6 % Pt-GNPs against all types of microorganisms that have been tested. These filters can easily be used in different applications such as the mask face or in air conditioning systems as well as in air purification devices with high filtration performance and effective cost.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100688"},"PeriodicalIF":0.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural behavior of reinforced concrete column having mid-span transverse opening: Experimental study and numerical analysis","authors":"Majid Hassan ,&nbsp;Suliman Khan ,&nbsp;Shaojun Fu ,&nbsp;Khushal Khan","doi":"10.1016/j.rinma.2025.100685","DOIUrl":"10.1016/j.rinma.2025.100685","url":null,"abstract":"<div><div>This study presents five different strengthening techniques to mitigate the axial load-carrying capacities of reinforced concrete (RC) column having mid-span transverse opening under different loading conditions. These techniques are concrete compressive strength (f_c’), column size, rebar size, rebar size and concrete f_c', and internally wrapped carbon fiber reinforced polymers (CFRP) strips. Experimental findings revealed that providing mid-span transverse opening (50 mm diameter) in RC columns (cross-section: 200 mm × 200 mm) reduces its axial load-carrying capacity by 20.99 %. However, with increased cross-section (230 mm × 230 mm) and rebar size (4N19), the axial load-carrying capacity of RC column was improved by 18.75 % and 9.38 %, respectively, compared to the RC column having no opening. The eccentric loading conditions showed a direct relationship between the bending moment and eccentricity of the RC column with increased cross-section. However, no obvious decline effect was found on the structural behavior of all RC specimens against cyclic loading. Furthermore, a non-linear finite element model (FEM) was established and showed good agreement with the experimental results under a marginal error of 3.71 %. Lastly, parametric analysis identified that cross-section and rebar size have the major influence on improving the axial load-carrying capacities of RC specimens having mid-span transverse opening under concentric and eccentric loading.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100685"},"PeriodicalIF":0.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variations in casting temperatures effect of re-melted 6061 aluminum alloy on tensile strength","authors":"Zulfadhli ,&nbsp;Akhyar Akhyar ,&nbsp;Nurdin Ali ,&nbsp;Arhami ,&nbsp;Muhammad Reza Pahlevi","doi":"10.1016/j.rinma.2025.100691","DOIUrl":"10.1016/j.rinma.2025.100691","url":null,"abstract":"<div><div>The variation in casting temperature influences the solidification rate of aluminum alloys, which in turn affects the tensile properties of the metal. This experiment aims to investigate the effect of four different casting temperatures on the tensile strength of remelted 6061 aluminum alloy. Cast samples were prepared using a square steel mold, and tensile test specimens were machined according to standard tensile tests. The mold was preheated to 220 °C to prevent thermal shock due to temperature differences between the melt and the mold. The casting temperature variations used for the melt were 700, 750, 800, and 850 °C. Ultimate tensile strength (UTS) shows slight fluctuations with changes in casting temperature, decreasing to approximately 160 MPa at 800 °C before recovering at 850 °C, but these variations are not statistically significant. Yield strength remains relatively stable across the temperature range, with minor fluctuations suggesting minimal effect from casting temperature. Young's modulus increases significantly at 750 °C but decreases slightly at 800 °C, indicating moderate sensitivity to casting conditions while maintaining relatively consistent values overall. The relationship between casting temperature and cooling rate is non-linear, with the cooling rate decreasing to a minimum at 800 °C before rising again. The casting temperature has minimal impact on the tensile strength, yield strength, and Young's modulus of remelted Al 6061 alloy, as indicated by the slight fluctuations in these properties across the tested temperature range.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100691"},"PeriodicalIF":0.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced anticorrosion waterbased polyurethane coating using Schiff base functionalized MXene","authors":"Ali Moshkriz ,&nbsp;Reza Darvishi ,&nbsp;Aboulfazl Barati ,&nbsp;Mohsen Tafazoly","doi":"10.1016/j.rinma.2025.100687","DOIUrl":"10.1016/j.rinma.2025.100687","url":null,"abstract":"<div><div>In this study, a novel anticorrosive waterborne polyurethane (WPU) coating was developed using Schiff base-functionalized MXene nanosheets. MXene (Ti₃C₂Tx) was first etched with hydrofluoric acid and then intercalated with a Copper (II) Schiff Base Complex Component (CSBCC), linked via (3-Aminopropyl) triethoxysilane (APTES) to enhance dispersion and chemical stability. The modified nanosheets (AMMXene-CSBCC) were incorporated into WPU at various weight fractions (0.3, 0.5, and 0.7 wt%) and applied to mild steel substrates. Characterization techniques, including FTIR, XRD, SEM-EDS, and TGA, confirmed the successful surface functionalization of MXene. Electrochemical Impedance Spectroscopy (EIS) results demonstrated that the optimal 0.5 wt% AMMXene-CSBCC coating (AXPU0.5) significantly improved corrosion resistance, achieving a total impedance of 6.9 × 10⁷ Ω at 0.01 Hz after 48 h of immersion, compared to 7.6 × 10⁵ Ω for pure WPU. Tafel polarization studies further revealed a reduction in corrosion current density to 6.04 × 10⁷ A/cm² for AXPU0.5, marking a 99.2 % inhibition efficiency, a notable enhancement over unmodified MXene-based coatings. The adhesion strength of AXPU0.5 was also improved, reaching 3.19 MPa, demonstrating strong substrate bonding. The Schiff base modification not only enhanced the oxidation resistance of MXene but also facilitated the formation of a more robust passive film, improving long-term protection. The superior anticorrosion performance, environmental benefits (reduced VOC emissions), and enhanced mechanical properties make this approach highly promising for industrial applications in marine, aerospace, and infrastructure sectors.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100687"},"PeriodicalIF":0.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enriching grain refinement on improving mechanical and corrosion properties of graphene reinforced magnesium composites","authors":"Elango Natarajan ,&nbsp;Manickam Ramasamy ,&nbsp;G Anbuchezhiyan ,&nbsp;Santhosh Mozhuguan Sekar ,&nbsp;M Vignesh","doi":"10.1016/j.rinma.2025.100689","DOIUrl":"10.1016/j.rinma.2025.100689","url":null,"abstract":"<div><div>Magnesium is a lightweight material with inferior strength and stiffness, and it softens at relatively low temperatures. Ceramic particles in the Mg matrix can improve these shortcomings. In the current examination, graphene (0.5 wt%, 1 wt%, 1.5 wt%, and 2 wt%) reinforced magnesium composites were synthesized using the squeeze casting method and their microstructure and mechanical properties were analysed. Microstructural observation shows that Mg intermetallic phases interact with intermixture to form a refined grain size and enhance interface bonding between the blends, strengthening the composite by inhibiting dislocation movement. The interphase Mg₂C provide a stable and protective coating on the surface of magnesium, preventing further oxidation and corrosion.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100689"},"PeriodicalIF":0.0,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of PLA bio-composite reinforced with jute fiber and ESP fillers and optimization of mechanical properties via fuzzy logic approach","authors":"Efty Mahmud ,&nbsp;Alberuni Aziz ,&nbsp;Farjana Parvin","doi":"10.1016/j.rinma.2025.100684","DOIUrl":"10.1016/j.rinma.2025.100684","url":null,"abstract":"<div><div>Conventional synthetic materials based composite contributes greatly to waste accumulation and landfill increase as petroleum based material as petroleum-based resins accounts for ≈40 % of the global polymer market. Jute fibers were selected for their low cost, moderate strength, and biodegradability, while ESP fillers were incorporated to enhance the mechanical properties of the composite. Two samples were fabricated: Type A (without ESP fillers) and Type B (with ESP fillers). Mechanical tests showed that Type B exhibited superior tensile and flexural strength, compared to Type A. In contrast, Type A outperformed Type B in impact strength. A fuzzy logic-based model was developed. The existing composites often shows subpar results which is the result of weak fiber matrix adhesion and filler dispersion issues. The results indicate that this PLA-jute-ESP composite can serve as a viable alternative to conventional NFCs, promoting environmental sustainability while reducing production costs., minimizing the trial-and-error approach often seen in the industry Additionally, the fuzzy logic model enhances the ability to predict composite behavior. The novelty of this study lies in the development of a fully biodegradable PLA-jute-ESP fabrication method, which is cost-effective and addresses both environmental concerns by reducing reliance on petroleum-based matrices and bridging performance gaps in natural fiber composites (NFCs). The integration of a fuzzy logic model further enhances this approach by providing a scalable framework for optimizing green composites, offering a sustainable alternative to traditional metal-based composites in global green composite fabrication. Enabling tailored material designs for automotive, packaging, and construction applications. Furthermore, this study supports global sustainability goals by contributing to advancing high performance, biodegradable composites that minimizes resource depletion and fossil fuel reliance.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100684"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143621172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced properties of the Cu-10 wt% graphite composites by two-step spark plasma sintering method at the presence of Al addition","authors":"R. Khosravi Zeydabadi,&nbsp;M. Sobhani","doi":"10.1016/j.rinma.2025.100686","DOIUrl":"10.1016/j.rinma.2025.100686","url":null,"abstract":"<div><div>In the present study, Cu-10 wt% graphite composites were fabricated using powder metallurgy and spark plasma sintering (SPS) combined with the two-step sintering (TSS) method. The impact of 2 wt% aluminum powder additive on the sintering process and the properties of the resulting composites was investigated. Various sintering schedules were applied to achieve optimal properties in the composites. Single-step sintering was conducted at temperatures of 550, 600, and 650 °C, while two-step sintering (TSS) involved an initial temperature (T₁) of 600 °C followed by a second temperature (T₂) of 550 °C. The composites prepared using the TSS method exhibited a minimum friction coefficient of 0.23 and showed lower weight loss in sliding wear tests. The hardness of the composites containing 2 wt% Al reached approximately 88.5 BHN, while the electrical conductivity decreased by about 10 % compared to composites without Al addition. X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDX) confirmed the formation of a solid solution of aluminum in the copper matrix during sintering. Microstructural observations revealed well-dispersed graphite particles within the matrix.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100686"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterization of polystyrene-Zn-TiO2 nano-composites based superhydrophobic self-cleaning coating","authors":"Sadia Mortuza ,&nbsp;Md. Aminul Islam ,&nbsp;Labiba Nahrin ,&nbsp;Firoz Ahmed","doi":"10.1016/j.rinma.2025.100683","DOIUrl":"10.1016/j.rinma.2025.100683","url":null,"abstract":"<div><div>Self-cleaning coatings are increasingly recognized as sustainable solutions for surface maintenance in diverse applications, minimizing environmental impact and operational expenses, especially titanium dioxide (TiO₂) based coatings. Photocatalytic activities of TiO₂ removed contaminants deposited on the glass surfaces. However, the efficacy of photocatalysis of TiO₂ needs to be improved due to its wide band gap nature. Zn doping reduced the optical bandgap, which facilitated charge transfer and introduced novel electronic states. In this context, Zn-doped TiO₂ nanoparticles have been synthesized using the sol-gel method to obtain a reduced band gap and enhance self-cleaning performance. The range of doping concentrations was 0–3.5 % mol. The nanoparticles were dispersed in a polystyrene containing silicone oil matrix to fabricate the self-cleaning coating, which was spin-coated onto a glass substrate. To improve the adhesion to the glass substrate, polymer is specifically utilized in the coating solution. The structural, morphological, and optical properties were evaluated using X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV–visible spectroscopy (UV–Vis). Finally, dust removal, antifog analysis and contact angle measurements were analyzed to assess the self-cleaning ability. XRD analysis showed that Zn doping significantly altered crystallite sizes of TiO₂ nanoparticles by consisting of anatase phase. From the SEM, the average particle size of undoped and 3.5 % Zn doped TiO₂ was 18 nm and 21 nm respectively. The band gap of TiO₂ gradually decreased from 3.20 eV to 1.65 eV due to 3.5 % Zn doping which enhanced the ability to absorb visible light and increased its photocatalytic activity. Hydrophobicity of the coating was drastically enhanced as a consequence of Zn doping. The highest water contact angle was 148° for 3.5 % Zn doped TiO₂ nanocomposite. The nanocomposites have better dust removal and anti-fogging capabilities than undoped TiO2. The findings indicate that the coating has prospective industrial applications as a self-cleaning coating.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100683"},"PeriodicalIF":0.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of novel red light emitting PVA/ZnO: Eu3+ electrospun composite nanofibers","authors":"Sanjeev Kumar ,&nbsp;Kuldeep Kumar ,&nbsp;Manveer Singh ,&nbsp;Deepti Jain ,&nbsp;S.R. Dhakate","doi":"10.1016/j.rinma.2025.100682","DOIUrl":"10.1016/j.rinma.2025.100682","url":null,"abstract":"<div><div>Polyvinyl Alcohol (PVA)/ZnO: Eu³⁺ composite nanofibers (NFs) have been successfully prepared by Electrospinning technique. The crystal structure, surface morphology, distribution of elements and photoluminescence properties of composite NFs were characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX) and Photoluminescence (PL) spectroscopy respectively. XRD pattern confirmed the successful incorporation of ZnO: Eu³⁺ nanophosphors into the PVA matrix whereas EDX demonstrated the homogeneous distribution of elements. The bonding characteristics of composite NFs were analyzed by FTIR. The composite NFs exhibited red emission peak at 635 nm under the excitation wavelength of 266 nm. Tunability in colors from blue to red is observed for the composite NFs. Excellent values of color coordinates of the PVA/ZnO: Eu³⁺ composite NFs make them fascinating for illuminating the solid state lighting (SSL) world.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100682"},"PeriodicalIF":0.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly efficient CuO/Cu@PC composite membranes for the photocatalytic degradation and sorption of roxithromycin from aqueous solutions","authors":"Dinara T. Nurpeisova ,&nbsp;Anastassiya A. Mashentseva ,&nbsp;Fatima Abuova ,&nbsp;Saida H. Aleskhanova ,&nbsp;Murat Barsbay","doi":"10.1016/j.rinma.2025.100677","DOIUrl":"10.1016/j.rinma.2025.100677","url":null,"abstract":"<div><div>This study presents an effective approach to synthesis, characterization, and application of composite polycarbonate (PC) track-etched membranes (TeMs) embedded with copper (Cu) and copper(II) oxide (CuO) microtubes (CuO/Cu@PC) for the efficient removal of the antibiotic roxithromycin (ROX) from aqueous solutions. Using an environmentally friendly glyoxylic acid-based deposition method, Cu microtubes were deposited onto the PC TeMs and subsequently thermally annealed to generate a catalytically active CuO phase. Comprehensive structural analyses (SEM, SEM-EDX, XRD, XPS, AFM) confirmed the successful transformation of Cu into CuO, enhancing the material's photocatalytic and sorptive performance. Under UV irradiation, the CuO/Cu@PC composites achieved a remarkable 96.8 % degradation of ROX within 180 min, significantly outperforming unannealed samples (85.9 %). Furthermore, adsorption studies demonstrated a maximum ROX uptake capacity of 410 mg/g at optimal pH 5.5, following a pseudo-second-order kinetic model and Freundlich isotherm, suggesting a heterogeneous chemisorption process. The composite membranes exhibited outstanding long-term stability, maintaining over 85 % photocatalytic efficiency after 10 cycles. These results highlight the potential of CuO/Cu@PC membranes as highly effective and reusable materials for the sustainable removal of pharmaceutical contaminants, offering a scalable solution for water purification.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100677"},"PeriodicalIF":0.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}