Advanced Composites and Hybrid Materials最新文献

{"title":"The thermal reliability of indium-doped low solver SAC/Cu joints and the corresponding alloys","authors":"Jiaqi Yan,&nbsp;Shanshan Cai,&nbsp;Ming Yuan,&nbsp;Xiaojing Wang,&nbsp;Chen Liu,&nbsp;Jiajun Wang,&nbsp;Ning Liu,&nbsp;Yanlai Wang,&nbsp;Xiaohong Yuan,&nbsp;Hassan Algadi","doi":"10.1007/s42114-025-01236-x","DOIUrl":"10.1007/s42114-025-01236-x","url":null,"abstract":"<div><p>Based on CALPHAD-guided alloy design, key experimental investigations, and first-principles calculations, this study explores the melting characteristics, microstructure, mechanical properties, and fracture mechanisms of Sn-0.5Ag-0.7Cu-3Bi-<i>x</i>In (<i>x</i> = 4, 8, 12, 17, wt.%)/Cu solder joints. Research reveals that In doping lowers the solidus, liquidus, and peak temperatures, while increasing the melting range and undercooling. The matrix phases of 4In and 8In solders are β-Sn. When the In content exceeds 12 wt.%, the γ-InSn₄ phase starts to appear in the matrix, the matrix is transforming from the original single-phase into a dual-phase matrix. Consistent with it, the interfacial compound phase also has In doped, forming Cu₆(Sn, In)₅. During isothermal aging at 170 °C for 0–750 h, In doped less than 12 wt.% inhibits the growth of Cu₃(In,Sn) and Cu₆(Sn,In)₅, while the joints with just 12 wt.% In doping exhibit the strongest inhibition effect on the interface IMCs. After 750 h of aging, the 12In/Cu solder joint shows the best mechanical properties, with high shear strength and shear energy, minimal displacement damage, and consistent ductile fracture mode before and after aging. The nanoindentation results indicate that the hardness of the IMC layer remains nearly unchanged, and the modulus increases, along with an increase in E_i/H values and plasticity with increasing In content. These results are mainly due to the larger charge density difference between Cu and In atoms compared to those between Cu and Sn atoms, indicating a stronger Cu–In bond compared to the Cu–Sn bond. Because Young’s modulus is an intrinsic property, its magnitude may be related to the strength of bonding in the structure. This study, guided by CALPHAD for phase types and fractions, correlates nanoindentation with changes in mechanical properties and microstructure, and validates material performance through first-principles calculations. It has practical significance for controlling the growth of interface compounds, exploring the impact of the In element doping on solder joint performance, and stabilizing solder joint structures.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01236-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploration of the zinc storage mechanism and kinetics of vanadium sulfides/reduced graphene oxide composites for aqueous zinc-ion battery cathodes","authors":"Bobae Ju,&nbsp;Hee Jo Song,&nbsp;Hyunseok Yoon,&nbsp;Woong-Ju Kim,&nbsp;Sungwoo Park,&nbsp;Jin Bae Lee,&nbsp;Dong-Wan Kim","doi":"10.1007/s42114-025-01283-4","DOIUrl":"10.1007/s42114-025-01283-4","url":null,"abstract":"<div><p>Aqueous zinc-ion batteries (AZIBs) are considered suitable devices for large-scale energy storage systems. Vanadium sulfides have gained wide attention as AZIB cathode materials owing to their low cost, high specific capacity, and fast Zn-ion insertion/extraction ability. However, a thorough examination of their actual operation as AZIB cathodes remains lacking. In this study, we synthesized three types of vanadium sulfides/reduced graphene oxide (V_xS₈/rGO, <i>x</i> = 2, 5, and 6), fabricated electrodes from these materials, and systemically explored their Zn-ion storage mechanisms and kinetics. All three V_xS₈/rGO electrodes required an electrochemical activation step, which involved charging over 1.8 V (vs. Zn/Zn²⁺), to obtain high reversible discharging–charging capacity. The V₅S₈/rGO and V₆S₈/rGO electrodes exhibited structural and morphological evolution during electrochemical activation and maintained 70% of their capacities for 700 cycles at a current density of 5 A g⁻¹. The V₂S₈/rGO electrode maintained its initial state during repeated discharge–charge cycling and, thus, exhibited exceptional long-term cycling stability with 99% capacity retention for 700 cycles at the same current density. These findings highlight the importance of an in-depth study of vanadium sulfide materials requiring electrochemical activation to achieve high-power- and energy–density AZIBs.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01283-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Excellent electrochemical performance based on covalently crosslinked chitosan hydrogel electrolytes induced structural stability against alkali","authors":"Yuchen Wang,&nbsp;Xuan Zhang,&nbsp;Xue Zhao,&nbsp;Xiaodong Yang,&nbsp;Ming Yuan,&nbsp;Yan Zheng,&nbsp;Jijun Tang,&nbsp;Wen Liu,&nbsp;Jiaoxia Zhang,&nbsp;Long Lin","doi":"10.1007/s42114-024-01191-z","DOIUrl":"10.1007/s42114-024-01191-z","url":null,"abstract":"<div><p>Alkali-resistant electrolytes are suitable for high-power equipment and harsh environments. However, most hydrogels lose stability in a strong alkaline environment. As such, the development of hydrogel electrolytes having an outstanding alkali resistance is desirable. In the work reported here, the quaternary ammonium group was introduced to chitosan to achieve excellent hydrophilicity and conductivity. Then, an alkali-resistant hydrogel polymer electrolyte was prepared by graft copolymerizing and crosslinking chitosan quaternary ammonium salt with acrylamide. The fracture elongation of the resulting hydrogel polymer electrolyte can reach 300%. The electrolyte has a high ionic conductivity of 1.66 × 10^–1 S·cm⁻¹ after being soaked in a strong alkaline solution. Meanwhile, salt solutions were used to further enhance the ionic conductivity that reached 2.42 × 10^–1 S·cm⁻¹. The potential window of the device prepared expanded from 1.0 to 1.3 V. The energy density and the power density reached 5.49 Wh·kg⁻¹ and 346.66 W·kg⁻¹, respectively. Finally, it was explored from a molecular level, for the first time, that free ions and solvent-separated ion pairs proceed with ionic migration to enhance ionic conductivity. Our findings provide valuable insights into the application of gel polymer electrolytes in future energy devices.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475232","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":"Sub-3 nm Pt3Ni nanoparticles for urea-assisted water splitting","authors":"Shun Lu,&nbsp;Xingqun Zheng,&nbsp;Kaixin Jiang,&nbsp;Qingmei Wang,&nbsp;Xingzu Wang,&nbsp;Muhammad Wakil Shahzad,&nbsp;Fengjun Yin,&nbsp;Ben Bin Xu,&nbsp;Qingsong Hua,&nbsp;Hong Liu","doi":"10.1007/s42114-025-01279-0","DOIUrl":"10.1007/s42114-025-01279-0","url":null,"abstract":"<div><p>The development of durable efficient electrocatalysts is crucial to alleviate the sluggish kinetics of electrocatalytic urea oxidation reaction (UOR) for energy-saving water splitting. Small Pt-based intermetallic compounds exhibit promising characteristics as UOR catalysts due to their distinctive electronic and geometric structures. This work reported a surfactant-assisted shape evolution method for the controlled synthesis of sub-3 nm Pt₃Ni nanoparticles on carbon black to achieve efficient electrocatalytic UOR. The synthesized catalyst features a uniform dodecahedral structure, maximizing Ni utilization and providing multiple active sites for UOR. The Pt₃Ni catalyst displays the lower working potential of 1.44 V versus reversible hydrogen electrode, outperforming Pt/C (1.78 V) at 10 mA cm⁻², with a smaller Tafel slope of 78.1 mV dec⁻¹, while maintaining exceptional stability during 100 h of continuous urea-assisted water electrolysis. Notably, UOR-boosted system needs only 1.36 V for 10 mA cm⁻², significantly lower than the 1.62 V required for traditional water splitting, highlighting its energy-efficient potential for H₂ production. Furthermore, theoretical studies indicate that Pt₃Ni(111) facilitates the adsorption and activation of urea molecules more effectively than Pt(111), avoiding competition from hydroxyl adsorption. The unique polyhedron structure of the sub-3 nm Pt₃Ni catalyst provides the catalytic active dual-sites, further promoting urea interaction. To the best of knowledge, this study represents the first report of Pt-M materials being utilized for the UOR, thereby expanding the application range of Pt-based alloys in urea electrocatalysis.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01279-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The crushing behavior and energy absorption characteristics of all-composite star-triangular honeycomb structure","authors":"Zhikang Liu,&nbsp;Bo Xiong,&nbsp;Yifei Zhang,&nbsp;Jiayi Liu,&nbsp;Wei Huang","doi":"10.1007/s42114-025-01276-3","DOIUrl":"10.1007/s42114-025-01276-3","url":null,"abstract":"<div><p>The energy absorption characteristics and toughness of carbon fiber-reinforced plastics (CFRP) are improved from two aspects of structure and material. In terms of structure, an all-composite star-triangle honeycomb structure (CSTH) with negative Poisson’s ratio characteristic was designed and fabricated firstly. From the aspect of material, the polyetherimide (PEI) film was added into the layers of CFRP to enhance the toughness. A quasi-static compression experiment of CSTH was carried out. Besides, environmental scanning electron microscopy (ESEM) and ultra depth of field microscope (UDFM) were used to analyze the microstructure of CSTH. The failure mode and damage mechanism of CSTH were compared and revealed novelly from macroscopic and microscopic aspects. The delamination resistance of carboxylic multiwalled carbon nanotube (MWCNT) which was added between PEI film and carbon fiber layers was investigated. The theoretical prediction model of the equivalent elastic modulus and the ultimate compressive strength of CSTH was established. The theoretical results were verified and modified by the experimental results. The maximum error of theoretical results was less than 15% compared with that of experimental results. Results showed that CSTH had a better energy absorption characteristic compared with the re-entrant honeycomb structure and X honeycomb structure. In addition, the foam and PEI film could enhance the toughness of CSTH.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01276-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of carbon-based conductive hydrogels and their potential for promoting nerve regeneration","authors":"Shuhui Yang,&nbsp;Jie Pan,&nbsp;Haijing Fu,&nbsp;Jingchuan Zheng,&nbsp;Fang Chen,&nbsp;Mingchen Zhang,&nbsp;Zhe Gong,&nbsp;Kaiyu Liang,&nbsp;Chengcheng Wang,&nbsp;Juncheng Lai,&nbsp;Xiangqian Fang,&nbsp;Jinjin Zhu","doi":"10.1007/s42114-025-01261-w","DOIUrl":"10.1007/s42114-025-01261-w","url":null,"abstract":"<div><p>Conductive hydrogels have the potential to facilitate nerve regeneration through various mechanisms, including providing physical support, enabling electrical signal transmission, and stimulating nerve cells to release growth factors. Carbon-based conductive materials, such as carbon nanotubes (CNTs) and graphene oxide (GO), are widely used in the construction of conductive hydrogels due to their advantages in electrical conductivity and biosafety. Herein, we fabricated conductive hydrogels by incorporating CNTs or GO into gelatin or chitosan. The gelatin- and chitosan-based electrospun fiber hydrogels were synthesized at room temperature using acetic acid/hexafluoroisopropanol and acetic acid/water as solvents, respectively. Subsequently, we investigated the morphology, swelling properties, mechanical properties, and electrical performance of the hydrogels. Scanning electron microscopy (SEM) images verified the uniform distribution of CNTs and GO within the different hydrogel formulations. The network structure formed by CNTs enhanced the swelling rate of the hydrogels. The incorporation of CNTs and GO elevated the compression elastic moduli of the hydrogels. Conductivity experiments revealed that the conductivity of graphene oxide was significantly improved upon soaking with sodium ascorbate. Notably, chitosan hydrogels containing reduced graphene oxide exhibited the highest conductivity. Pheochromocytoma 12 (PC12) cells could adhere to and spread on the hydrogels surface. These findings suggest that conductive hydrogels hold great promise as candidates for nerve repair in the future.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01261-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The embira bark fiber: a sustainable Amazon tape","authors":"Sheron S. Tavares,&nbsp;Lucas de Mendonça Neuba,&nbsp;Henry Colorado Lopera,&nbsp;Sergio Neves Monteiro,&nbsp;Marc André Meyers","doi":"10.1007/s42114-024-01170-4","DOIUrl":"10.1007/s42114-024-01170-4","url":null,"abstract":"<div><p>The embira bark fiber is routinely used in Brazil to construct simple structures because of its ease of extraction, flexibility, and considerable strength. It plays an important role, somewhat similar to duct tape, and is commonly used for temporary repairs and tying objects. The flexible bark is removed from the tree by making two cuts into it and manually pulling off the fibrous structure. Three similar but distinct embira bark fibers are characterized structurally and mechanically: <i>embira branca</i>, <i>embira capa bode</i>, and <i>embira chichá</i>. The bark separates readily into strips with thicknesses between 0.3 and 1 mm, enabling it to be twisted and bent without damage. The structure consists of aligned cellulose fibers bound by lignin and hemicellulose. Thus, it is a natural composite. The tensile strength of the three fibers varies in the range of 25 to 100 MPa, with no clear difference between them. There is structural and strength consistency among them. The mechanical strength of <i>embira branca</i> is measured for different fiber bundle diameters and is found to increase with decreasing diameter. Thermogravimetric analysis showed that degradation of the fibers initiates at 250 °C, consistent with other lignocellulosic fibers. X-ray diffraction identifies two major components: the monoclinic crystalline structure of cellulose and an amorphous phase; the crystallinity index is approximately 50%. The tensile strength shows significant variation, a characteristic of biological materials; this can be significantly improved by selective growing of embira-bearing trees.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-024-01170-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on thin-layer broadband metamaterial absorber based on composite multi-opening ring pattern of magnetic dielectric layers","authors":"Qin Huang,&nbsp;Wei Xie,&nbsp;Faleh Zafer Alqahtany,&nbsp;Taishan Cao,&nbsp;Gaber A. M. Mersal,&nbsp;Zhexenbek Toktarbay","doi":"10.1007/s42114-025-01250-z","DOIUrl":"10.1007/s42114-025-01250-z","url":null,"abstract":"<div><p>Balancing the thickness and bandwidth of electromagnetic wave–absorbing materials has been a challenging task. In this study, a thin and broadband metamaterial absorber consisting of a frequency selective surface (FSS) layer compounded with a magnetic dielectric layer was proposed. The changes in the wave absorbing properties of the absorbers with different numbers of openings in the open circular structure and combinations of open circular rings were analyzed. After obtaining the optimum combination of patterns, the effect of parameter variations on the microwave absorption properties of metamaterial wave absorbers was investigated. The test results show that the optimized metamaterial absorber has a thickness of 1.7 mm, a simulated absorption bandwidth of up to 10.0 GHz, and a microwave reflection loss of less than − 10 dB in the frequency band of 8.0–18.0 GHz. The absorber was prepared and its reflection loss was measured. It is found that these test results have the same trend as the simulation results, which verifies the feasibility of the metamaterial absorber structure design; the proposed two-layer magnetic dielectric composite FSS structure improves the overall impedance matching, avoids the electromagnetic wave being reflected in the surface, and makes the electromagnetic wave enter the interior more; when the resonant absorption peak generated by the introduction of FSS is close to the absorption peak generated by the magnetic dielectric layer, continuous absorption will be achieved, which is the reason for the wide absorption band of the metamaterial absorber. This novel structure takes into account the characteristics of thin layer, broadband absorption, and polarization insensitivity, which has a potential application prospect in stealth technology.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01250-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A semi-transparent strong biomimetic wound healing material: zinc oxide and sodium alginate based bi-layer nanofiber membrane","authors":"Muzammil Kuddushi,&nbsp;Tanay Kumar,&nbsp;Hongyan Wu,&nbsp;Sherry Chen,&nbsp;Ben Bin Xu,&nbsp;Naved Malek,&nbsp;Larry Unsworth,&nbsp;Jiangtao Xu,&nbsp;Jiangwen Zhang,&nbsp;Xihua Wang,&nbsp;Xuehua Zhang","doi":"10.1007/s42114-025-01269-2","DOIUrl":"10.1007/s42114-025-01269-2","url":null,"abstract":"<p>Wound healing is a critical process that significantly impacts patient health and places a substantial burden on healthcare systems. This study aimed to develop and evaluate transparent composite nanofibrous membranes with enhanced biological functionality as advanced wound dressing materials. We hypothesized that the incorporation of sodium alginate (NaAlg) or zinc oxide (ZnO) into electrospun polymer nanofibers, combined with the use of a conductive aluminum mesh during fiber collection, would result in membranes with locally aligned nanofibers, enabling optical transparency, biocompatibility, and mechanical properties. By using a 1.58 mm aluminum square mesh as a fiber collector during electrospinning of polycaprolactone (PCL)/ethylene vinyl alcohol (EVOH), we fabricated composite fiber membranes with varying concentrations of NaAlg (1–5% w/v) or ZnO (1–3% w/v). The use of the conductive mesh led to partial alignment of the nanofibers, enhancing light transmission and achieving notable optical transparency (up to  40% for NaAlg and  22% for ZnO). These membranes also exhibited a bi-layer structural configuration, robust mechanical properties (12–13 MPa), and optimal water vapor transmission rates (WVTR,  1400–1700 g/m<span>(^{2})</span>/day). Biological assessments, including disc diffusion and cytotoxicity tests, demonstrated excellent biocompatibility (85–100% viability with HaCaT cells) and promising blood-clotting properties. These findings suggest that the developed nanofiber membranes, through their unique alignment-driven transparency and multifunctionality, can effectively monitor wound healing in real-time, absorb substantial exudate, and provide a protective barrier against environmental contaminants. This work highlights the novelty and potential of these nanofiber membranes as advanced biomaterials for diverse wound dressing applications.</p>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01269-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plasma modification of the structural, morphological, and catalytic activity of Fe3O4@SiO2@TiO2 core–shell system","authors":"Amr Gangan,&nbsp;Alaa Fahmy,&nbsp;Seham A. Shaban,&nbsp;Zeinhom M. El-Bahy","doi":"10.1007/s42114-025-01260-x","DOIUrl":"10.1007/s42114-025-01260-x","url":null,"abstract":"<div><p>Pulsed DC plasma-liquid interaction was used to prepare Ag-doped Fe₃O₄@SiO₂@TiO₂ (PP-FST) core–shell in a very short time compared to conventional methods. Tetraethyl orthosilicate (TEOS) and Ti(IV) isopropoxide precursors were employed as sources of SiO₂ and TiO₂, respectively, under the influence of plasma-liquid interaction using silver metal electrodes. TEM images and EDS mapping proved the successful formation of Fe₃O₄@SiO₂@TiO₂ core–shell structure without the detection of Ag NPs on the PP-FST surface. This proposed the dispersion of Ag NPs within TiO₂ lattice during the synthesis process using the plasma-liquid technique. The XRD patterns show an increase of the crystallinity of the sample after exposure to plasma. Furthermore, structural and optical properties were studied using XPS and UV–Vis, respectively. The synthesized FST core–shell exhibited outstanding light absorption capabilities which may be attributed to the strong surface plasmon resonance (SPR) effect at the interface of the Ag nanoparticles and the TiO₂ semiconductor. This interaction lowers the energy band gap of PP-FST to 2.05 eV, compared to 2.73 eV for FST. The specific surface area determined by BET analysis was 53.9 m²/g for PP-FST, whereas it was 34.1 m²/g for FST. Moreover, the activity of both the plasma-prepared and conventionally synthesized FST core–shell nano-catalysts was evaluated for the removing of toxic dyes such as Acid Orange 142 (AO). The degradation efficiency significantly increased to 99.6% for PP-FST compared to 80% for FST, highlighting the effect of plasma treatment.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01260-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}