Rare Metals最新文献

{"title":"Self-supported Mo and Zn co-doped CoP nanosheet array electrode for large-current-density hydrogen evolution","authors":"Wei Zhang,&nbsp;Xiu-Yuan Xie,&nbsp;Chang-Sheng Cao,&nbsp;Ya-Qiang Li,&nbsp;Muhammad Imran Khan,&nbsp;Qi-Long Zhu","doi":"10.1007/s12598-025-03427-3","DOIUrl":"10.1007/s12598-025-03427-3","url":null,"abstract":"<div><p>Transition metal phosphides (TMPs) have emerged as promising alternatives to commercial noble-metal-based electrocatalysts for the hydrogen evolution reaction (HER). However, their electrocatalytic performance is still far from practical application. Herein, a novel self-supported CoP-based electrode (MoZn-CoP/CC) was prepared, in which Mo and Zn co-doped CoP nanosheet arrays are tightly anchored on a carbon cloth (CC) matrix. Remarkably, the as-prepared MoZn-CoP/CC electrode exhibits outstanding HER performance with exceptional pH universality. More importantly, it only requires modest overpotentials to deliver the current densities exceeding 1.0 A cm⁻² in both alkaline and acidic media, outperforming the commercial Pt catalyst. Experimental results combined with theoretical analysis reveal that co-doping of Mo and Zn can modulate the electronic structure of CoP, thereby optimizing the adsorption energy of hydrogen and ultimately improving the HER performance. This work provides an effective strategy to tune the electronic properties of TMPs via heteroatom doping for enhancing their electrocatalytic performance.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 9","pages":"6258 - 6267"},"PeriodicalIF":11.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced glutamine inhibition and photothermal therapy for breast cancer using Janus mesoporous organosilica-coated platinum nanomotors","authors":"Xiao-Feng Chen,&nbsp;Zhi-Hui Chen,&nbsp;Nan Zhong,&nbsp;Yang Liu,&nbsp;Xuan Sha,&nbsp;Yang Li,&nbsp;Zi-Qing Xu,&nbsp;Jie Zhang,&nbsp;Shou-Ju Wang,&nbsp;Cui-Ying Li,&nbsp;Yu-Xia Tang","doi":"10.1007/s12598-025-03421-9","DOIUrl":"10.1007/s12598-025-03421-9","url":null,"abstract":"<div><p>In the treatment of breast cancer, the combination of glutamine metabolism inhibition and photothermal therapy (PTT) is gaining increasing attention. This study developed a Janus nanomotor to enhance permeability in tumor tissues for nanomedicine applications by using mesoporous organic silica (PMO) anisotropically grown on the surface of the platinum (Pt) nanoparticles (PMO@Pt). The prepared PMO@Pt had unique Janus structure with an average size of approximately 236 nm. The loading capacity of V9302 was evaluated to be 44.37% when the mass ratio of V9302 to PMO@Pt was maintained at 2.0 and in vitro release studies demonstrated that acidic environments significantly enhanced the drug release. Then this nanomotor was loaded with perfluorohexane (PFH), a phase-change material, and the glutamine inhibitor V9302 (denoted as Janus PMO@Pt@PFH@V9302, JPV). Janus PMO@Pt@PFH (JPP) nanomotors demonstrated enhanced fluorescence intensity and distribution within 3D tumor spheroids compared to Janus PMO@Pt nanomotors, attributed to the photothermal-induced phase change of PFH. The nanomotors exhibited high biocompatibility, with cell viability exceeding 98% at high concentrations. However, the incorporation of V9302 into the nanomotors (JPV) significantly reduced 4T1 cell viability under laser irradiation, indicating a cytotoxic effect resulting from the synergy between photothermal therapy and glutamine metabolism inhibition. In vivo, JPV nanomotors effectively inhibited tumor growth and induced apoptosis without causing significant systemic toxicity, showcasing their potential as a therapeutic agent for breast cancer. This integrated nanomotor offers a promising approach for enhanced ultrasound imaging and photothermal therapy in cancer treatment.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7576 - 7586"},"PeriodicalIF":11.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sulfur-modulated charge-asymmetry Cu–Zn bimetallic nanoclusters for efficient CO2 electroreduction","authors":"Zheng Liu,&nbsp;Yin-Qi Li,&nbsp;Yu-Fan Tan,&nbsp;Jing-Qiao Zhang,&nbsp;Yao Zhu,&nbsp;Ting Cao,&nbsp;Hai-Yang Lv,&nbsp;Hui-Long Geng,&nbsp;Ju-Zhe Liu,&nbsp;Hua-Zhang Zhai,&nbsp;Han Wang,&nbsp;Wen-Xing Chen","doi":"10.1007/s12598-025-03425-5","DOIUrl":"10.1007/s12598-025-03425-5","url":null,"abstract":"<div><p>CO₂ electroreduction (CO₂RR) represents a promising negative-carbon technology, which is in urgent need for efficient and high-selectivity catalysts. Here, a support control strategy is employed for precise surface engineering of charge-asymmetry nanocluster catalyst (CuZnSCN), in which zinc and copper atoms together form a metal cluster loaded on sulfur and nitrogen co-etched carbon matrix. The synergistic promotion mechanism of CO₂RR by Cu–Zn atom interactions and sulfur–nitrogen atom doping was investigated. A CO partial current density of 74.1 mA cm⁻² was achieved in an alkaline electrolyte, as well as a considerable CO Faraday efficiency of 97.7%. In situ XAS (X-ray absorption spectroscopy) showed that the stabilization of Cu⁺ and Zn²⁺ species in the nanoclusters and doped sulfur atoms during the CO₂RR process contributes to the sustained adsorption of protons and the generation and conversion of the CO. This work verifies the possibility of metal-support and intermetallic interactions to synergistically enhance electrochemical catalytic performance and provides ideas for further bimetallic cluster catalyst development.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 9","pages":"6211 - 6222"},"PeriodicalIF":11.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanism of heterogeneous phase formation induced by Ti addition in NdFeB magnets and multifactor synergistic strengthening of mechanical properties","authors":"Jiajin Zhong,&nbsp;Liuyimei Yang,&nbsp;Munan Yang,&nbsp;Sangen Luo,&nbsp;Sajjad Ur Rehman,&nbsp;Ihor I. Bulyk,&nbsp;Qijun Zheng,&nbsp;Bin Yang","doi":"10.1007/s12598-025-03398-5","DOIUrl":"10.1007/s12598-025-03398-5","url":null,"abstract":"<div><p>This study demonstrates simultaneous enhancement of magnetic and mechanical properties in NdFeB magnets through Ti addition. The coercivity increases by 1.1 kOe without compromising remanence, while bending strength improves by 159.05%. Analytical results reveal that Ti predominantly combines with free B atoms to form TiB₂ phases, which reduce the brittleness of grain boundary (GB) phase and impede dislocation motion. The superposition of stress fields around dislocations generates reactive forces that counteract external loads, thereby enhancing GB strength. Concurrently, B depletion in GB phases induces amorphous transformation, further enhancing boundary strength. A minor fraction of Ti incorporates into the main phase, enhancing covalent bond strength and forming a reinforced main phase. Additionally, Ti addition promotes grain refinement and increases GB density, significantly improving bending strength. The synergistic effects of heterogeneous phase formation, amorphous transformation, main phase reinforcement, and grain refinement collectively enable coordinated strengthening between the main phase and GBs. This multi-mechanism approach provides novel insights for mechanical property optimization in NdFeB magnets.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 9","pages":"6562 - 6574"},"PeriodicalIF":11.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Infectious microenvironment responsive bimetallic sulfide combined with NIR irradiation to enhance photodynamic gas synergistic therapy of maxillofacial trauma","authors":"Yin-Han Liao,&nbsp;Hai-Qing Liao,&nbsp;Xing-Mou Wu,&nbsp;Xu-Zhi Liang,&nbsp;Shi-Yu Zhang,&nbsp;Yan Liu,&nbsp;Wei-Jiu Mo,&nbsp;Sui-Hua Li,&nbsp;Ming-Yang Jiang,&nbsp;Zhi-Wei Gao,&nbsp;Jia-Xi Wang,&nbsp;Ming Gao,&nbsp;Hao Li,&nbsp;Cui-Ping Li","doi":"10.1007/s12598-025-03409-5","DOIUrl":"10.1007/s12598-025-03409-5","url":null,"abstract":"<div><p>Maxillofacial trauma is an infection and oxidative stress-induced damage to maxillofacial area related cells. Increasing evidences have suggested that therapeutic strategies with controllable anti-infective and anti-inflammatory capabilities hold great potentials in the clinical treatment of maxillofacial trauma. Herein, we reported an infectious microenvironment responsive bimetallic sulfide (FeCuS_<i>x</i>, FCS) combining with near infrared (NIR) irradiation for maxillofacial trauma therapy. In cellular levels, FCS exhibited the most efficient antioxidant and anti-inflammatory, cell migration, and angiogenesis behaviors through down-regulating the inflammatory factor (iNOS) expression level, up-regulating anti-inflammatory factors (Arg-1 and TGF-β) expression level, inducing macrophages M2 polarization (CD86 down-regulation and CD206 up-regulation), and promoting tissue repair factors (CD31) expression level. Besides, it presented the excellent antibacterial ability of <i>Escherichia coli</i> (99.74%) and MRSA (99.78%) for FCS + NIR. Significantly, it also confirmed that FCS + NIR presented the excellent functions of inhibiting wound infections, decreasing wound inflammation, as well as promoting trauma tissue repairing. Altogether, it had developed the strategy of FCS + NIR for the synergistic enhancement of infectious maxillofacial trauma healing, could also serve as a promising therapeutic strategy for the treatment of infectious diseases.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7587 - 7602"},"PeriodicalIF":11.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electroreduction-assisted adsorption energy modulation of copper-nickel alloy for nitrate electroreduction to ammonia applied to energy conversion and zinc-nitrate batteries","authors":"Ya-Ling Zhao,&nbsp;Yu-Ting Zhai,&nbsp;Wen-Ping Zhu,&nbsp;Zeng-Chen Liu,&nbsp;Shu-Yan Gao","doi":"10.1007/s12598-025-03374-z","DOIUrl":"10.1007/s12598-025-03374-z","url":null,"abstract":"<div><p>The steps of NO₃⁻ adsorption, deoxygenation, nitrogen species hydrogenation and ammonia desorption are vital for electrocatalytic nitrate reduction (NO₃⁻RR) to ammonia, and lowering their Gibbs free energy change (Δ<i>G</i>) is the essential approach for improving NO₃⁻RR. The copper-based alloys are considered as the outstanding catalysts thanks to the tunable d-band center, reconstruction and synergistic effect of multiple metal atoms in the past decades. Here, we synthesized a single-phase copper-nickel alloy by electrodeposition and optimized its Δ<i>G</i> during NO₃⁻RR through tuning the electrodeposition potential to regulate the metal component ratio. The atomic ratio of Ni/Cu in CuNi alloys is gradually increased as the negative shift of deposition potential from −1.0 to −1.2 V versus SCE, thus achieving the fast modulation of intermediate adsorption energy for NO₃⁻RR. According to density functional theory, profited by a strong NO₃⁻ adsorption and a weak NH₃ desorption energy barrier, the optimized CuNi alloy (Cu₃Ni₁/CF) exhibits an ideal ammonia yield of 364.1 μmol cm⁻² h⁻¹ and Faradaic efficiency of 92.25% at −0.23 V versus RHE. Further applying Cu₃Ni₁/CF as the cathode material, a novel Zn-nitrate battery exhibits a maximum power density of 5.85 mW cm⁻² with a NH₃ yield of 92.50 μmol cm⁻² h⁻¹ and Faradaic efficiency of 99.15% at 20 mA cm^–2 for NH₃ production. This work not only offers a rational design concept with clear guidance for efficient modulation of intermediate adsorption free energy on alloy catalysts prepared by electrodeposition, but also provides the further understanding for efficient developments of NO₃⁻RR and Zn-based batteries.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7449 - 7463"},"PeriodicalIF":11.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the catalytic potential of two-dimensional conjugated metal–organic frameworks based on hexaazanaphthalene: machine learning-driven insights into the origin of oxygen evolution-reduction activity","authors":"Qiang Zhang,&nbsp;Xihang Zhang,&nbsp;Huizhen Jin,&nbsp;Qingjun Zhou,&nbsp;Fuchun Zhang,&nbsp;Xinghui Liu","doi":"10.1007/s12598-025-03385-w","DOIUrl":"10.1007/s12598-025-03385-w","url":null,"abstract":"<div><p>Inspired by hexaazanaphthalene-based conjugated copper metal–organic framework (HATNA-Cu-MOF), we designed 161 HATNA-TM-MOF-based SACs (TM@N_<i>x</i>O_4−<i>x</i>-HATNA) with varying TM or ligands creating distinct coordination environments (<i>x</i> = 0–4) with superior thermodynamic and electrochemical stabilities. Volcano plots can be constructed using (Δ<i>G</i>_OOH* − Δ<i>G</i>_O*)/Δ<i>G</i>_O* as descriptors for oxygen evolution/reduction reaction (OER/ORR) activity, also serving as target parameters for machine learning (ML) models to identify high-performance OER/ORR catalysts. The efficient monofunctional and bifunctional electrocatalysts were successfully predicted, where the ML prediction results well matched the DFT calculation results. We employed Shapley additive explanations (SHAP) for feature analysis and utilized sure independence screening and sparsification operator (SISSO) for generalization. ML analyses reveal that TM-based OER/ORR activities predominantly correlate with three key descriptors: metallic atomic radius, d-orbital electron population, and the heat of formation of the oxide, demonstrating the pivotal role of TM’s inherent electronic configuration and physicochemical characteristics in governing electrocatalytic efficacy. The constant-potential approach emphasizes the key role of electric double-layer capacitance in adjusting the kinetic barrier, where changes in the Fermi level influence the occupation of d-orbitals. Variations in electrochemical potential significantly alter the electronic structure of representative Rh@N₁O₃-HATNA, affecting both the Fermi level and adsorption properties, with the unique 4d⁸5s¹ configuration leading to inverted O₂ adsorption energies as the potential decreases. This study contributes insights into the origin of oxygen evolution-reduction activity for the HATNA-TM-MOF-based SACs and reveals the fundamentals of structure–activity relationships for future applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7430 - 7448"},"PeriodicalIF":11.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Progress in porous transport layer for hydrogen production via proton exchange membrane water electrolysis","authors":"Yu Liu,&nbsp;Su-Neng Liu,&nbsp;Qing-He Yu,&nbsp;Zi-Qiang Dong,&nbsp;Lei Hao,&nbsp;Jing Mi","doi":"10.1007/s12598-025-03379-8","DOIUrl":"10.1007/s12598-025-03379-8","url":null,"abstract":"<div><p>Hydrogen energy, as one of the cleanest energy sources, has emerged as a leading candidate for replacing nonrenewable energy. However, hydrogen is not directly available from nature. Challenges such as high production costs and the need for efficient large-scale production technologies remain significant obstacles. Among the various hydrogen production methods, water electrolysis stands out due to its environmentally friendly nature and the high purity of hydrogen produced. Proton exchange membrane (PEM) electrolyzers are promising devices for hydrogen production. They exhibit the superiorities in high operational current densities exceeding 2 A cm⁻², greater resistance to fluctuations, and improved electrolysis efficiency. A critical component of PEM water electrolyzers is the porous transport layer (PTL), which serves as an electron conductor between the membrane electrode assembly and the bipolar plate, ensuring efficient mass transport between gas and liquid phases. This review provides a comprehensive examination of PTL materials, structural configurations, surface treatments, and the resulting performance of electrolytic cells. These insights aim to guide researchers in selecting appropriate PTL materials and treatments tailored to specific practical applications. Additionally, this paper analyzes operational conditions—such as compaction pressure, temperature, water flow rate, and oxygen saturation within the electrolyzer—that influence PTL performance. These factors are crucial for researchers to holistically design and optimize PEM electrolyzer systems.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 9","pages":"5933 - 5956"},"PeriodicalIF":11.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oxygen vacancy in lead-free perovskite Cs2AgBiBr6/WO3-X for enhanced photocatalytic C(sp3)-H bond oxidation","authors":"Taoran Chen,&nbsp;Tian Qin,&nbsp;Hongli Sun,&nbsp;Chenliang Su","doi":"10.1007/s12598-025-03400-0","DOIUrl":"10.1007/s12598-025-03400-0","url":null,"abstract":"<div><p>Photocatalytic oxidation of toluene to valuable benzaldehyde offers a promising pathway for sustainable production of fine chemicals and pharmaceuticals. In this process, photogenerated holes play a crucial role in C(sp³)-H bond dissociation. However, the photocatalytic performance of current photocatalysts is often hindered by the low separation and transfer efficiency of photogenerated charges. In this work, we presented a perovskite-based heterostructure via in situ growth of defective WO_3-<i>x</i> nanosheets on Cs₂AgBiBr₆ nanoparticles for photocatalytic toluene transformation. In situ Fourier transform infrared spectroscopy tests proved the introduction of oxygen-deficient WO_3-<i>x</i> component enhanced the chemisorption of molecular oxygen. The in situ electron paramagnetic resonance and 4-chloro-7-nitro-1,2,3-benzoxadiazole fluorescence measurements further confirmed the presence of oxygen vacancies, and the formation of heterostructure synergistically accelerated the formation of the superoxide radicals and the transfer of photogenerated charge carriers. Under visible light irradiation, Cs₂AgBiBr₆/WO_3-<i>x</i> photocatalyst could effectively oxidize toluene toward benzaldehyde with a conversion rate of 9020 μmol g⁻¹ h⁻¹, which was a 3.5-fold increase over that of the unmodified Cs₂AgBiBr₆. </p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 9","pages":"6354 - 6365"},"PeriodicalIF":11.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of cotton derived carbon fiber@FeNi nanoparticle/porous carbon sponge for boosting electromagnetic wave absorption","authors":"Ying Li,&nbsp;Yu-Hao Lu,&nbsp;Zhen-Xin Liu,&nbsp;Dong-Yi Lei,&nbsp;Ming-Long Yang,&nbsp;Dong-Lei Yang,&nbsp;Yi-Han Jin,&nbsp;Jia-Xin Liu,&nbsp;Di Lan","doi":"10.1007/s12598-025-03429-1","DOIUrl":"10.1007/s12598-025-03429-1","url":null,"abstract":"<div><p>Carbon-based sponge materials have attracted massive attention as electromagnetic wave (EMW) absorber candidates due to their lightweight and excellent electromagnetic (EM) attenuation capability. However, the high cost, complex fabrication process and limited EMW absorption bandwidth restrict their application. Herein, a hierarchical three-dimensional (3D) cotton derived carbon fibers coated with core–shell structure FeNi nanoparticle@porous carbon (CCF/FeNi@PC) from MOF precursor were successfully constructed by coprecipitation and one-step pyrolysis methods. By regulating carbonization temperature, optimizing the electromagnetic parameters, outstanding electromagnetic absorption (EMA) performance was achieved. The CCF@FeNi/PC synthesized at 900 °C demonstrates a −64.5 dB minimum reflection loss (RL_min) at 15.39 GHz, and the effective absorption bandwidth (EAB) is 5.08 GHz when the thickness is only 1.9 mm. Notably, the maximum EAB (EAB_max) was extended 8.18 GHz at 2.96 mm for FeNi-800. The excellent microwave absorption performance is attributed to the synergistic effect of enhanced dielectric loss and magnetic loss, good impedance matching as well as hierarchical multiple scattering and reflection of EMWs. The obtained CCF@FeNi/PC composites provide a novel and promising strategy for constructing lightweight low-cost efficient microwave absorption materials.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 9","pages":"6531 - 6546"},"PeriodicalIF":11.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}