Advanced Composites and Hybrid Materials最新文献

{"title":"Biocarbon nanoadsorbents derived from walnut shell and their excellent adsorption of trinitrotoluene from wastewater","authors":"Xiaofeng Shi,&nbsp;Shilin Cao,&nbsp;Chao Si,&nbsp;Zhenguo Liu,&nbsp;Yu Dong,&nbsp;Jiaji Sun","doi":"10.1007/s42114-024-01172-2","DOIUrl":"10.1007/s42114-024-01172-2","url":null,"abstract":"<div><p>A novel, reusable biomass-derived adsorbent biochar material, referred to as WS, was developed by pyrolyzing ball-milled walnut shell powder under an inert gas atmosphere, followed by chemical activation with sodium hydroxide (NaOH). The resulting biochar WS demonstrated rapid adsorption capabilities for trinitrotoluene (TNT) from wastewater, achieving equilibrium within 30 min. The maximum adsorption capacity was determined to be 107.0 mg·g⁻¹. Adsorption data were well-described by the Langmuir isotherm model and the pseudo-second-order kinetic model, indicating favorable adsorption characteristics. The efficient removal of TNT by WS was attributed to a synergistic mechanism involving electrostatic attraction and chemisorption.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-024-01172-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612203","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":"Electromagnetic simulation integrated strategy to metamorphose commercial cotton into multifunctional electromagnetic interference shielding fabrics","authors":"Athira Rajan,&nbsp;Sibi Kaithakkal Solaman,&nbsp;Subodh Ganesanpotti","doi":"10.1007/s42114-025-01281-6","DOIUrl":"10.1007/s42114-025-01281-6","url":null,"abstract":"<div><p>In the dynamic landscape of wearable electronics, the demand for versatile electromagnetic interference (EMI) shielding materials is on the rise. Despite numerous studies on multifunctional EMI shielding fabrics, research on developing such materials using resource-efficient and cost-effective strategies is scarce. The present study introduces a pioneering approach to crafting simulation-engineered carbonized cotton-based EMI shielding fabrics with diverse multifunctionality by leveraging the strategy of electromagnetic (EM) simulations and ferrite decoration. The exceptional conductivity of carbonized cotton stemming from plasmonic electronic states, together with ferrite integration, plays a significant role in enhancing the EMI shielding ability of the fabrics. Ferrite integration is found to be instrumental in reducing the reflection and enhancing the absorption of EM radiations. EM simulations based on a double-layer fabric model demonstrated ~ 60 dB shielding effectiveness for a fabric with 0.75mm thickness, which is further verified via experimental testing. A comprehensive analysis of the EM parameters of the shielding fabric unveiled the existence of unique high-frequency negative permittivity, the high dielectric loss of the order of 10, multiple dielectric-magnetic relaxations, and high attenuation constant in the order of 10³, which significantly contributed to the effective absorption of EM waves. Furthermore, the fabricated EMI shielding fabrics exhibit a plethora of desirable traits, including superior Joule heating performance, photo-thermal capabilities, efficient thermal management, and remarkable hydrophobicity. Consequently, the findings position the multifunctional simulation-engineered EMI shielding fabrics developed in this study as compelling contenders for futuristic applications in wearable electronics, aligning closely with policies emphasizing cost-effectiveness and sustainability.</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":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01281-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602210","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 preparation of SiO2/SWCNT@Ni composite film with sandwich structure and its excellent electromagnetic shielding and thermal insulation performances in extreme environment","authors":"Junting Lei,&nbsp;Ziyuan Han,&nbsp;Lilin Xiang,&nbsp;Duo Pan,&nbsp;Hu Liu,&nbsp;Changyu Shen","doi":"10.1007/s42114-025-01235-y","DOIUrl":"10.1007/s42114-025-01235-y","url":null,"abstract":"<div><p>With the continuous exploration of the extreme environment in space, strong space radiation and extreme high temperature environment have brought great challenges to the research work of astronauts. This study effectively created the SiO₂/SWCNT@Ni composite film with electromagnetic shielding and thermal insulation performances by a high-temperature carbon reduction process utilizing the SiO₂ nanofiber, the poly(vinyl alcohol) (PVA) solution of single-walled carbon nanotubes (SWCNT), and Ni(NO₃)₂ as raw ingredients. The adaptable SiO₂ nanofiber membrane was synthesized by sol–gel and electrospinning methods utilizing tetraethyl n-silicate hydrolysis precursors as the primary ingredients. At a result, when the content of SWCNT content is 9 wt%, the average EMI SE_T of SiO₂/SWCNT₉@Ni is 39.4 dB, and the thermal conductivity measures 0.0405 W/m·K. In addition, SiO₂/SWCNT₉@Ni shows a good flame-retardant performance. Consequently, this research holds significant reference value in the field of manned spaceflight.</p><h3>Graphical abstract</h3><p>SiO₂/SWCNT@Ni composite film with sandwich structure has excellent electromagnetic shielding and thermal insulation performances.</p>\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":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01235-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602201","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":"Multifunctions of microwave-absorbing materials and their potential cross-disciplinary applications: a mini-review","authors":"Juanna Ren,&nbsp;Zuxiang Mu,&nbsp;Rahma Sellami,&nbsp;Salah M. El-Bahy,&nbsp;Gemeng Liang,&nbsp;Jiang Guo,&nbsp;Zeinhom M. El-Bahy,&nbsp;Peitao Xie,&nbsp;Zhanhu Guo,&nbsp;Hua Hou","doi":"10.1007/s42114-025-01258-5","DOIUrl":"10.1007/s42114-025-01258-5","url":null,"abstract":"<div><p>Microwave communication technology is widely used in numerous applications, from telecommunications to medical devices. However, the excessive use of microwave devices has led to significant electromagnetic pollution, posing potential risks to both health and the environment. To address this issue, microwave-absorbing materials have emerged and are continuously evolving, offering solutions to mitigate electromagnetic interference. These materials are currently advancing towards multifunctionality, enabling them to serve a range of purposes, and expanding into various fields, including defense, healthcare, and consumer electronics. This review summarizes the multifunctionalization and interdisciplinary applications of microwave-absorbing materials, including their use in infrared stealth, high-temperature resistance, anti-icing, human body protection, and the interdisciplinary linkage of microwave-absorbing materials with anti-tumor, auxiliary chemical synthesis, and energy storage. Finally, we aim for our work to provide directions for exploring the applications of microwave-absorbing materials.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01258-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594831","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":"Negative magnetoresistance effect in pre-magnetized decimeter-sized zero-valent iron plate during heavy metal removal","authors":"Qin-yu He,&nbsp;Fu-ming Chen,&nbsp;Shu-ting Hu,&nbsp;Wangjian Zhai,&nbsp;Zhilie Tang","doi":"10.1007/s42114-025-01288-z","DOIUrl":"10.1007/s42114-025-01288-z","url":null,"abstract":"<div><p>Current heavy-metal wastewater treatment methods face significant limitations, creating a need for new technologies. Zero-valent iron (ZVI) shows potential, but the core-shell structure of ZVI is an obstacle due to the low electrical conductivity (<i>σ</i>) of its shell, limiting electron transfer from the core to the surface for metal removal reactions. In this study, we enhance the shell’s <i>σ</i> in a pre-magnetized decimeter-sized ZVI plate (MMDZVIP) through reinforced negative magnetoresistance (NMR) effect. Magnetoresistance measurements reveal that MMDZVIP exhibits an NMR effect. MMDZVIP shows a magnetoresistance ratio (<i>MR</i>) of -123%, an <i>σ</i> 1.95 times and removal efficiencies 1.91 to 5.18 times that of unmagnetized plates when magnetized to 449 mT. Heavy-metal removal experiments showed nearly 100% removal efficiency at 354 mT, with performance retention above 99.7% after 9 cycles, demonstrating high durability. The mechanism behind the results is as follows: During the removal process, the migration of releasing electrons is aligned to form a current along the normal direction of the MMDZVIP plate. This current is primarily driven by electron consumption on the plate’s surface, where the removal reaction occurs. With pre-magnetization, NMR and Hall effects acted on the releasing electron current and synergistically and significantly enhance the shell's <i>σ</i>. Our work introduces a novel method for enhancing NMR in materials, advancing heavy-metal treatment technologies beyond current limitations.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01288-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583602","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":"Twin-coated skeleton PEDOT: PSS/MXene/para-aramid nanofibers hybrid aerogel with efficient EMI shielding performance and tunable power coefficient","authors":"Fengfeng Jia,&nbsp;Zhaoqing Lu,&nbsp;Tao Huang,&nbsp;Mingyuan Xu,&nbsp;Xiaoxu Xu,&nbsp;Zizhan Guo,&nbsp;Shan Wang,&nbsp;Jiayue Dong,&nbsp;Yajie Kou,&nbsp;Li Hua","doi":"10.1007/s42114-025-01290-5","DOIUrl":"10.1007/s42114-025-01290-5","url":null,"abstract":"<div><p>The extensive use of wireless communication devices has resulted in severe electromagnetic interference (EMI), which has driven the need for advanced EMI shielding materials. In this study, a twin-coated skeleton hybrid aerogel was constructed from <i>para</i>-aramid nanofibers (<i>p</i>-ANFs), MXene (Ti₃C₂T_x) flakes, and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) chains via a freeze-drying route. The robust chains of <i>p</i>-ANFs established a skeleton with a unique porous structure and reversible compressibility. The twin-coated cloth was composed of 28 wt% PEDOT:PSS and 20 wt% MXene, which endowed the PEDOT:PSS/MXene/<i>p</i>-ANFs hybrid aerogel with efficient EMI shielding properties. The shielding effectiveness (SE) and specific shielding effectiveness (SEE/t) in the X band (8.2–12.4 GHz) reached 41.27 dB and 3063.7 dB·cm²·g⁻¹, respectively. Interestingly, the EMI shielding capacity was controlled by the PEDOT:PSS and MXene contents and the PEDOT:PSS/MXene ratio. Moreover, the twin-coated hybrid aerogel exhibited outstanding compressive resilience, with a maximum compressive stress of 61.72 kPa under strain of 60% after 500 cycles. In addition, the relationship between the structure deformation and power coefficient of aerogels was constructed. Thus, this study provides a feasible route for fabricating aerogels with compressibility and efficient EMI shielding performance.</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":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01290-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553713","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":"In-situ deposition of β-FeOOH nanoparticles on commercially available filter paper for fast and efficient removal of antibiotic","authors":"Tingting Xi,&nbsp;Chaojian Li,&nbsp;Yaqian Yu,&nbsp;Weiqi Wei,&nbsp;Sha Wang,&nbsp;Tingting Xu,&nbsp;Huining Xiao,&nbsp;Hongqi Dai,&nbsp;Xuelian Zhou,&nbsp;Huiyang Bian","doi":"10.1007/s42114-025-01212-5","DOIUrl":"10.1007/s42114-025-01212-5","url":null,"abstract":"<div><p>Enhancing the dispersibility and recoverability of powdered catalysts is essential for developing efficient and cost-effective photocatalytic systems. Herein, <i>β</i>-FeOOH nanoparticles were in-situ deposited on commercially available filter paper (FP) to construct paper-based composite material (<i>β</i>-FeOOH@FP). Results showed that the rod-like <i>β</i>-FeOOH nanoparticles were uniformly distributed in the FP matrix without destroying the crystalline structure of cellulose. The resulting <i>β</i>-FeOOH synthesized at 3 h presented the highest photoelectrochemical response and exhibited better suppression of electron–hole recombination, allowing more photogenerated electrons to participate in the reaction. The <i>β</i>-FeOOH@FP catalyst achieved a 94.1% photocatalytic degradation rate of tetracycline (TC) within 120 min compared to the pure <i>β</i>-FeOOH (42.2%) and FP (20.1%) under simulated visible light irradiation. Photocatalytic degradation kinetics also demonstrated that the rate constant of <i>β</i>-FeOOH@FP was 9.6 × 10⁻³ min⁻¹, much higher than that of others. In addition, the resulting <i>β</i>-FeOOH@FP composite material exhibited excellent stability and reusability with a photocatalytic efficiency of over 90% after five cycles. These findings provide a simple and cost-effective strategy to improve the degradation performance of powdered semiconductor catalysts and pave a new way to develop cellulose-based nanocomposites with high photocatalytic efficiency.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01212-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553649","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":"Structural design and simulation of ultra-broadband TiCxN1-x fibers/Si3N4 high-temperature microwave absorbing composites","authors":"Guandong Liang,&nbsp;Jianqiang Bi,&nbsp;Shuyong Liang,&nbsp;Chengjiao Che,&nbsp;Lintao Liu,&nbsp;Shouliang Bie,&nbsp;Yao Yang","doi":"10.1007/s42114-025-01280-7","DOIUrl":"10.1007/s42114-025-01280-7","url":null,"abstract":"<div><p>Currently, high-temperature ceramic-based microwave-absorbing composites face limitations such as a limited range of material systems and narrow effective absorption bandwidth, which hinder their further application in electromagnetic wave absorption field under high-temperature environments. Herein, guided by electromagnetic simulation, a lightweight (1.61 g/cm³), ultra-broadband (32.45 GHz) high-temperature (800 °C) meta-structure TiC_xN_1-x fibers/Si₃N₄ microwave-absorbing composite was prepared by combining material composition and structural design with the quick gel casting process (20 min). Density functional theory calculations confirmed the presence of strong interfacial bonding (− 1.77 J/m²) between TiC_xN_1-x fibers and the matrix. After introducing only 4 wt% TiC_xN_1-x fibers, the flexural strength and fracture toughness of the composite sample increased by 56.24% and 111.48%, respectively. Moreover, the sample exhibited superior electromagnetic wave absorption performance in the Ku-band at 800 °C compared to room temperature. Based on the electromagnetic parameters of the sample introducing 4 wt% TiC_xN_1-x fibers and the results of electromagnetic simulation calculations, a sample with a trapezoidal pyramidal meta-structure of 180 mm × 180 mm was designed and fabricated. An ultra-wideband (8.25 ~ 40 GHz, X, Ku, K, and Ka) effective absorption for electromagnetic wave in the 2 ~ 40 GHz frequency range was achieved, which is in good agreement with the electromagnetic simulation results. This study offers a fresh approach to designing lightweight, ultra-wideband, structural–functional integrated ceramic-based microwave absorbing composites for high-temperature environments.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01280-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553887","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":"Nanocomposites of sequential dual curing of thiol-epoxy systems with Fe3O4 nanoparticles for remote/in situ applications: thermomechanical, shape memory, and induction heating properties","authors":"I. Collado,&nbsp;A. Vázquez-López,&nbsp;M. Fernández,&nbsp;J. de la Vega,&nbsp;A. Jiménez-Suárez,&nbsp;S. G. Prolongo","doi":"10.1007/s42114-025-01264-7","DOIUrl":"10.1007/s42114-025-01264-7","url":null,"abstract":"<div><p>Sequential dual-curing epoxy composites, such as the thiol-epoxy system, can potentially open new capabilities for end-products in the composite industry. This system remains stable after the initial curing and can undergo further reactions when exposed to a second stimulus, such as the use of magnetic induction: a remote and energy-efficient alternative. This study reports the first dual-curing thiol-epoxy resin reinforced with magnetic nanoparticles Fe₃O₄. The addition of Fe₃O₄ nanoparticles endows the polymer matrix with dual-stimuli shape memory, triggered by both conventional heating and the use of a magnetic field, broadening potential applications. The study examined various manufacturing conditions and loadings of Fe₃O_4, which improved the mechanical properties of the composites. The dual-response shape memory was evaluated by heating the polymer with both a conventional heat source and magnetic fields, resulting in a ~ 100% shape fixation and recovery ratio for either stimulus source, with superior performance under the magnetic field. Furthermore, under moderate magnetic fields, the system was able to reach temperatures as high as 160 °C, and the influence of various parameters on the efficiency of magnetic induction heating was studied by statistical analysis of design of experiments. Additionally, two proofs of concept were presented. In the first, the second curing step was performed under the in situ heating generated by the magnetic field, successfully fixing the temporary shape into the permanent form of the sample. In the second concept, the system was utilized as a smart switch or a threshold temperature sensor.</p><h3>Graphical Abstract</h3><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":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01264-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553650","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":"Cu–Zn@HA bimetallic nanozymes: a novel approach for ROS clearance and macrophage polarization in colitis therapy","authors":"Lin Cheng,&nbsp;Yun-kai Dai,&nbsp;Ningyi Zhang,&nbsp;Xiaotong Ye,&nbsp;Yuan Liao,&nbsp;Chun-hua Fan,&nbsp;Wen-ying Zhu,&nbsp;Shu-ling Xu,&nbsp;Liang Guo,&nbsp;Toujun Zou,&nbsp;Dongling Dai,&nbsp;Yu-jin Wu,&nbsp;Dan Liu","doi":"10.1007/s42114-025-01285-2","DOIUrl":"10.1007/s42114-025-01285-2","url":null,"abstract":"<div><p>Inflammatory bowel disease (IBD) presents significant clinical challenges due to its multifaceted pathogenesis and the limited efficacy of existing therapies. This study investigates the therapeutic potential of Cu–Zn@HA bimetallic nanozymes for the treatment of colitis. Through in vivo experiments, we demonstrated that these nanozymes exhibit sustained retention in the colon, facilitating effective modulation of gut microbiota composition and diversity. Notably, Cu–Zn@HA nanozymes significantly enhanced α-diversity and induced distinct alterations in microbial community structure across treatment groups. While no marked differences were observed in the Firmicutes/Bacteroidetes ratio, our biomarker analyses indicated critical shifts in bacterial populations associated with gut health and inflammatory responses. Additionally, Cu–Zn@HA nanozymes effectively scavenged reactive oxygen species (ROS) and promoted macrophage polarization, contributing to an anti-inflammatory microenvironment. Importantly, our studies confirmed the excellent safety profile of these nanozymes. Collectively, these findings underscore the promising role of Cu–Zn@HA bimetallic nanozymes as a novel therapeutic strategy for IBD, paving the way for future investigations into their clinical efficacy and safety.</p></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 2","pages":""},"PeriodicalIF":23.2,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01285-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553660","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}