Materials Chemistry and Physics最新文献

{"title":"Enhancing mechanism of nanodiamonds on tribological behavior and antiwear properties in Ag composite coatings during current-carrying friction","authors":"Jiamin Fang ,&nbsp;Dexin Chen ,&nbsp;Xiaojing Fang ,&nbsp;Peng Zhang ,&nbsp;Jing Sang ,&nbsp;Hidetoshi Hirahara ,&nbsp;Sumio Aisawa ,&nbsp;Wei Li","doi":"10.1016/j.matchemphys.2025.131046","DOIUrl":"10.1016/j.matchemphys.2025.131046","url":null,"abstract":"<div><div>Introduction of hard phases into soft metal coatings is a widely used strategy to improve the tribological behavior and antiwear properties during current-carrying friction. In this work, we developed silver (Ag) composite coatings reinforced with nanodiamonds (NDs) using a self-devoloped rotating spray deposition technology. The composite coatings, with a 0–10 g/L rage concentrations of NDs, were comprehensively characterized for morphology, chemical composition, hardness, and current-carrying tribological behavior and antiwear properties. Thanks to the unique advantages of our fabrication technique, the coatings show a dense structure with strong interfacial bonding both at the coating-copper substrate interface and between the Ag matrix and NDs in composite coatings. The addition of NDs not only maintains excellent electrical conductivity (minimum 98.1 %ICAS) but also boosts microhardness to 169 HV. Uniformly dispersed NDs effectively enhance the tribological behavior and wear resistance, keeping the friction coefficient stable at 0.1–0.2 and reducing the wear rate significantly with the shallowest wear track measuring only 6 μm. Finally, the worn subsurface structure of wear tracks was analysized to confirm the good bonding between NDs and the Ag matrix, as well as the dispersion-strengthening effect of NDs within the Ag matrix and the plastic deformation mechanism of Ag during current-carrying friction. This study not only enriches the enhancing mechanism in hard-phase-reinforced composites but also provides new insights and approaches for the development of electric contact coating materials.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131046"},"PeriodicalIF":4.3,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084766","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}

{"title":"Nanoscale engineering of Sr-doped ZnO nanorods/CuO nanocomposites for the photocatalytic treatment of methylene blue pollutant","authors":"Ali Tekin ,&nbsp;Raşit Aydın ,&nbsp;Ümmühan Akın ,&nbsp;Osman Kahveci ,&nbsp;Abdullah Akkaya ,&nbsp;Hüsnü Kara ,&nbsp;Bünyamin Şahin","doi":"10.1016/j.matchemphys.2025.131009","DOIUrl":"10.1016/j.matchemphys.2025.131009","url":null,"abstract":"<div><div>This study investigates the effect of Sr doping on the physical and photocatalytic properties of ZnO nanorods/CuO nanocomposites. Various techniques were applied to understand how Sr doping modifies these films. SEM analysis showed that ZnO and CuO formed structures such as nanorods or nanowires. Sr-doped samples exhibited increased aggregation compared to undoped composites, with Sr doping levels of 2.0 % and 4.0 % leading to more pronounced morphological changes. AFM measurements showed an increase in average roughness from 70.53 nm to 111.83 nm with higher Sr doping levels. XRD analysis showed that the crystallite sizes decreased from 36.20 nm for undoped samples to 31.55 nm and 29.90 nm with 2.0 % and 4.0 % Sr doping, respectively. FTIR Spectroscopy provided insights into the chemical bonding changes induced by Sr doping. The bandgap analysis revealed that Sr doping in the ZnO/CuO nanocomposites enhanced the bandgap energy, with the value increasing from 2.41 eV in the undoped sample to 3.61 eV at 4.0 % Sr doping. Electrical conductivity measurements showed a decrease in total resistance values as the Sr doping ratio increased. The contact resistance values increased from 3.13 × 10⁹ Ω in the un-doped samples to 3.22 × 10⁸ Ω in the 4.0 % Sr-doped films. It was observed that 2.0 % Sr doping increased the photocatalytic degradation of the ZnO nanorods/CuO nanocomposite films, whereas 4.0 % Sr doping decreased this effect. Thus, the dynamic evaluation of the catalytic performance with TOF yields values of 0.176 and 0.184 for ZnO nanorods/CuO nanocomposites films and ZnO nanorods/CuO:Sr (2.0 %), respectively.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131009"},"PeriodicalIF":4.3,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946723","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}

{"title":"Structural and dielectric characterization of La2/3Cu3Ti4O12 ceramics synthesized via a solid-state reaction combined with a double calcination process","authors":"Atittaya Changchuea ,&nbsp;Sirawit Promsai ,&nbsp;Suwit Khongpakdee ,&nbsp;Marina Mani ,&nbsp;Sonchai Intachai ,&nbsp;Jakkree Boonlakhorn ,&nbsp;Pornjuk Srepusharawoot","doi":"10.1016/j.matchemphys.2025.131024","DOIUrl":"10.1016/j.matchemphys.2025.131024","url":null,"abstract":"<div><div>La_2/3Cu₃Ti₄O₁₂ ceramics were synthesized using a solid-state reaction method combined with a double calcination process. X-ray diffraction analysis confirmed the primary phase of CaCu₃Ti₄O₁₂ (JCPDS No. 75–2188) in samples sintered at 1080 °C for 3 and 6 h, along with a minor TiO₂ secondary phase. The La_2/3Cu₃Ti₄O₁₂ ceramics demonstrated high dielectric permittivity values ranging from 3.77 × 10³ to 6.39 × 10³ and low loss tangents between 0.051 and 0.263. Notably, the dielectric permittivity of the 3-h-sintered La_2/3Cu₃Ti₄O₁₂ ceramic at 1 kHz exhibited excellent temperature stability, aligning with the operational requirements for Class III ceramic capacitors, particularly those classified under the X5S, Y5S, and Z5S standards. This indicates the potential of the material for applications requiring stable dielectric performance under varying thermal conditions. The high dielectric permittivity observed in La_2/3Cu₃Ti₄O₁₂ ceramics is attributed to an internal barrier layer capacitor structure. The semiconducting behavior of the grains is likely due to an electronic charge carrier hopping mechanism involving Cu⁺–O–Cu²⁺ and Ti³⁺–O–Ti⁴⁺ networks. These findings highlight the suitability of La_2/3Cu₃Ti₄O₁₂ ceramics for advanced capacitor applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131024"},"PeriodicalIF":4.3,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068822","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}

{"title":"Exploring the photovoltaic potential of Cs2AgBX6 (BBi, Sb; X=Br, Cl) double perovskites: A computational study","authors":"Yali Tuo ,&nbsp;Ziyi Zhang ,&nbsp;Shuangna Guo ,&nbsp;Yaxin Xu ,&nbsp;Zhengjun Wang ,&nbsp;Zhao Han ,&nbsp;Xiongfei Yun ,&nbsp;Shaohang Shi ,&nbsp;Jiangzhou Xie ,&nbsp;Songya Wang ,&nbsp;Chao Dong ,&nbsp;Xiaoning Guan ,&nbsp;Changcheng Chen ,&nbsp;Gang Liu ,&nbsp;Pengfei Lu","doi":"10.1016/j.matchemphys.2025.131014","DOIUrl":"10.1016/j.matchemphys.2025.131014","url":null,"abstract":"<div><div>Double perovskite materials have shown significant potential in addressing the toxicity and instability issues of lead halide perovskites in practical applications. In particular, Cs₂AgBX₆ (B<img>Bi, Sb; X = Br, Cl) has attracted considerable attention as an efficient and environmentally friendly alternative to lead-based perovskites. In this study, Cs₂AgBX₆ is selected as the light-absorbing layer for solar cells. Structural calculations reveal that Cs₂AgBX₆ is an indirect bandgap semiconductor, with a bandgap ranging from 0.9 to 1.8 eV, exhibiting excellent photovoltaic performance, particularly within the visible light absorption range. Specifically, antimony-based perovskites demonstrate an outstanding optical absorption coefficient of 5 × 10⁵ cm⁻¹. Moreover, the Cauchy pressure significantly influences the material's elasticity and brittleness, with empirical results indicating that all four materials possess good elastic properties. The mechanical stability of the materials is described in terms of Young's modulus, Poisson's ratio, and other mechanical parameters. Simulation results for the solar cell show that Cs₂AgBX₆ achieves a power conversion efficiency (PCE) of up to 14.28 %. Therefore, this study not only demonstrates the immense potential of Cs₂AgBX₆ in photovoltaic applications but also paves the way for its further development in device applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131014"},"PeriodicalIF":4.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070324","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}

{"title":"TiC-xNi composite coatings by high-frequency induction-heated combustion synthesis and their corrosion resistance in molten brass","authors":"Chenggang Pan ,&nbsp;Can Liu ,&nbsp;Peng He ,&nbsp;Dudu Liu ,&nbsp;Shanshan Li ,&nbsp;Tao Zhang ,&nbsp;Yaoyang Tang ,&nbsp;Yu Yang ,&nbsp;Yuhui Zhai","doi":"10.1016/j.matchemphys.2025.131013","DOIUrl":"10.1016/j.matchemphys.2025.131013","url":null,"abstract":"<div><div>TiC-<em>x</em>Ni composite coatings (<em>x</em> = 10, 20, 30, 40, and 50 wt%) were synthesized in situ on H13 substrates using high-frequency induction-heated combustion synthesis (HFIHCS). The parameters of induction current and hot-press sintering duration were systematically optimized. The effects of nickel content on the microstructural characteristics, porosity levels, and bonding performance of the TiC-<em>x</em>Ni coatings fabricated via HFIHCS, as well as their corrosion resistance in molten brass environments, were investigated. The findings indicated that optimal microstructural integrity and porosity were achieved with an induction current of 500 A and a hot-press sintering time of 30 s. The surface porosity and TiC grain size exhibited a decreasing trend with increasing nickel content, while the internal porosity demonstrated an inverse relationship. The observed increase in lattice constants of the TiC phases in the TiC-<em>x</em>Ni coatings (<em>x</em> = 10, 20, 30, and 40 wt%) relative to the standard value can be attributed to the synergistic effects of elevated argon pressure and a substantial presence of solid solution elements. The higher temperature of the molten brass resulted in a corrosion surface of the H13 steel that comprised an outer layer of adhesive brass and an inner mixed layer of immersed brass and substrate material. The corrosion layer of the TiC–10Ni coating was characterized by a thick outer layer of mixed oxides and an inner layer of TiC oxides, with the native TiC particles becoming indistinguishable. Conversely, the surface of the TiC–20Ni coating was covered by a thin, singular corrosion layer composed of oxides, brass, reaction alloys, and discernible native TiC particles. The presence of narrow and wide nickel zones in the pristine coating is attributed to the regulation of diffusion channel closure and patency between the coating and the molten brass, respectively.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131013"},"PeriodicalIF":4.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068824","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}

{"title":"Modeling concentration-dependent oligosiloxane diffusion for tangential hydrophobicity transfer","authors":"Bo Tao,&nbsp;Li Cheng,&nbsp;Yuxin He,&nbsp;Shuo Zhang,&nbsp;Wenlong Xu,&nbsp;Ruijin Liao","doi":"10.1016/j.matchemphys.2025.131011","DOIUrl":"10.1016/j.matchemphys.2025.131011","url":null,"abstract":"<div><div>Hydrophobicity transfer is a key property of anti-pollution flashover coatings, making hydrophobicity transfer materials (HTM) essential in outdoor insulation for power systems. Uneven aging during operation, as well as structural designs aimed at balancing coating durability and anti-pollution flashover performance, can lead to the formation of HTM patterned surfaces. Tangential hydrophobicity transfer has been clearly observed on these surfaces. However, current studies and models do not provide a quantitative explanation for this phenomenon, which limits the understanding of their characteristics and optimization of their design. To address this gap, this study fabricated an HTM/glass patterned surface with a single hydrophilic/hydrophobic interface and performed tangential hydrophobicity transfer tests under artificial pollution condition. The results showed a logarithmic relationship between transfer distance and HTM interface width. Based on the experimental phenomena, a tangential diffusion model for oligosiloxane was proposed, and the concentration-dependent diffusion coefficient was calculated using Boltzmann-Matano method. Additionally, a finite element model was developed to simulate the hydrophobicity transfer process with high precision. Together, the HTM hydrophobicity transfer characteristics identified in this study, combined with the proposed oligosiloxane diffusion model and the finite element model of the patterned HTM surface, advance the theory of hydrophobicity transfer and establish a new foundation for the interpretation and design of patterned surfaces.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131011"},"PeriodicalIF":4.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070325","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}

{"title":"Biowaste-derived chitosan composites for adsorptive removal of Pb(II) from water","authors":"Aveen M. Hanna,&nbsp;Rounak M. Shariff","doi":"10.1016/j.matchemphys.2025.131019","DOIUrl":"10.1016/j.matchemphys.2025.131019","url":null,"abstract":"<div><div>This study investigates the dynamic removal of lead(II) ions using biosorbents derived from peach shells and raw eggshells, forming composite chitosan adsorbents. Biosorbents were produced from peach shell (PS), carbonized peach shell (PSC), and acidified carbonized peach shell (APSC), then impregnated onto chitosan to form composites (PSCh, PSCCh, and APSCCh). Adsorption kinetics and thermodynamics were studied at temperatures of 25, 35, and 45 ± 1 °C. FTIR, XRD, SEM, and EDX analyses revealed morphological changes after bioadsorption. Four isotherm and kinetic models evaluated the adsorption efficiency. The pseudo-second-order kinetic model showed the best fit, with R² values up to 0.999. Langmuir isotherm analysis indicated single-layer adsorption, with maximum capacities reaching 50 mg/g. Thermodynamic parameters confirmed the process as spontaneous, endothermic, and chemisorption-driven, with ΔG⁰ values ranging from −24.02 to −28.21 kJ/mol and activation energies (Ea) of 8.91–24.51 kJ/mol. Changes in enthalpy (ΔH⁰: 6.43–22.03 kJ/mol) and entropy (ΔS⁰: 0.109–0.156 kJ/mol.K) indicated increased surface randomness. Overall, the study highlights the efficiency of chitosan-impregnated peach shell biosorbents for lead removal, offering a promising, eco-friendly solution for water treatment applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131019"},"PeriodicalIF":4.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068823","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}

{"title":"Antibacterial activity of graphene oxide/ZnO/salicylic acid composite against gram-negative and gram-positive bacteria","authors":"Adi Darmawan,&nbsp;Alviyani Pratiwi,&nbsp;Muhibbudin Al Fahmi,&nbsp;Hasan Muhtar,&nbsp;Rachel Maulida Tsuraya,&nbsp;Yayuk Astuti","doi":"10.1016/j.matchemphys.2025.131020","DOIUrl":"10.1016/j.matchemphys.2025.131020","url":null,"abstract":"<div><div>Bacterial infections pose a significant threat to human health, highlighting the need for materials with effective antibacterial properties. This study investigates the antibacterial potential of a composite material composed of graphene oxide (GO), zinc oxide (ZnO), and salicylic acid (SA). The GO/ZnO/SA composite was synthesized via a simple precipitation method and evaluated for its antibacterial activity against <em>Escherichia coli</em> (<em>E. coli</em>) and <em>Staphylococcus aureus</em> (<em>S. aureus</em>). The primary objective of this study is to determine the optimal composition of GO, ZnO, and SA to achieve the highest antibacterial activity. The results indicate that the GO/ZnO/SA composite with a higher proportion of ZnO and SA exhibited significant antibacterial properties against both <em>E. coli</em> and <em>S. aureus</em>. Among the various composite compositions, the GO/ZnO-3/SA-3 composite (GO:ZnO:SA = 1:6.6:22.8) demonstrated the highest inhibition, achieving 88.1 % inhibition against <em>E. coli</em> and 79.2 % inhibition against <em>S. aureus</em> after 20 h of incubation. Notably, bacterial growth inhibition efficiency increased with higher concentrations of ZnO and SA. These findings underscore the potential of the GO/ZnO/SA composite as a promising antibacterial material effective against both Gram-negative and Gram-positive bacteria.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131020"},"PeriodicalIF":4.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068897","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}

{"title":"Numerical analysis of surface plasmon resonance and photothermal properties of silica/gold/graphene and hollow/gold/graphene core-multi-shell nanoparticles","authors":"E. Farkouch ,&nbsp;A. Akouibaa ,&nbsp;R. Masrour ,&nbsp;S. Mordane ,&nbsp;M. Benhamou ,&nbsp;Heryanto Heryanto ,&nbsp;A. El assyry","doi":"10.1016/j.matchemphys.2025.131012","DOIUrl":"10.1016/j.matchemphys.2025.131012","url":null,"abstract":"<div><div>Multilayer nanoparticles (NPs) with gold (Au) and graphene (Gr) shells are increasingly important in nanotechnology due to their unique properties and applications. These NPs enhance surface plasmon resonance (SPR), allowing precise control over their optical properties and absorption intensity. This study investigates the SPR characteristics of two spherical core-shell NPs: (SiO₂/Au/Gr) and (Hollow/Au/Gr), using the finite element method (FEM). The optical parameters analyzed include dielectric constant, absorption cross-section, and optical conductivity. Results indicate that the Gr-shell causes a red shift in the SPR peak and reduces absorption amplitude, with effects becoming more pronounced as the number of Gr sheets increases. The intermediate Au-shell thickness is crucial for plasmonic coupling; as it decreases, the resonance frequency shifts towards the near-infrared (NIR) region, increasing SPR peak amplitude. Enhancing near-field and thermoplasmonic efficiency converting light energy into heat under SPR can be optimized by adjusting Au shell thickness and Gr sheet count. This flexibility allows for the design of nanostructures suitable for various applications, including SPR detection, photothermal therapy, and ultrasensitive optical sensors, where precise SPR control is vital.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131012"},"PeriodicalIF":4.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084765","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}

{"title":"The role of annealing in enhancing crystallinity, mechanical properties, piezoelectricity, and air filtration performance of polylactic acid nanofibers","authors":"Eman Elnabawy ,&nbsp;Dongyang Sun ,&nbsp;Neil Shearer ,&nbsp;Ali Toptaş ,&nbsp;Ali Kılıç ,&nbsp;Islam Shyha","doi":"10.1016/j.matchemphys.2025.131000","DOIUrl":"10.1016/j.matchemphys.2025.131000","url":null,"abstract":"<div><div>Annealing is a widely adopted post-treatment technique for enhancing the properties of nanofibers without altering their chemical structure. This study investigates the effect of annealing on the surface morphology, crystallinity, mechanical properties, and piezoelectric performance of polylactic acid (PLA) nanofibers produced via the electro-blow spinning (EBS) process. Two distinct PLA grades, 4043D PLA (NatureWorks) and L130 PLA (TotalCorbion) were annealed at temperatures ranging from 80 °C to 140 °C for 24 h. The annealed PLA nanofibers were then thoroughly characterised to identify the most suitable annealing temperature for improving their performance without causing structural defects. Characterisation results revealed a noticeable increase in crystallinity from 25 % to 39 % for 4043D PLA and from 45 % to 59 % for L130 PLA when annealed at 100 °C. At the same annealing temperature, piezoelectric output voltage showed an increase from 20 to 38 mV and from 30 to 52 mV for 4043D PLA and L130 PLA, respectively. The annealed PLA nanofibers were tested for air filtration to correlate the changes in nanofibers properties upon annealing with their filtration performance as air filters. Filtration experiments were performed according to the European standard for respiratory protective air filters (EN149) while Corona discharge was applied to impart long-lasting electrostatic charge onto nanofibers. The results demonstrated that L130 PLA nanofibers achieved a high filtration efficiency of around 99 %, while pressure drop was remarkably reduced from 850 to 405 Pa after annealing. The 4043D PLA nanofibers showed a reduction in filtration efficiency to 93.9 % at higher annealing conditions which was subsequently improved with Corona discharge treatment. The enhanced surface charge induced by Corona discharge enabled sustained electrostatic attraction which further improved the filtration efficiency without affecting the pressure drop. This study introduces annealing as a non-destructive and effective modification method for optimising the performance of biodegradable PLA-based air filters.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"343 ","pages":"Article 131000"},"PeriodicalIF":4.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936703","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}