Diamond and Related Materials最新文献

{"title":"Dual regulation of nanostructures and S-vacancy enabling ultra-high sodium storage performance for MoS2/carbon nanocage composites","authors":"Lifeng Zhang ,&nbsp;Yaoxin He ,&nbsp;Yi Ji ,&nbsp;Yuanting Wu ,&nbsp;Shouwu Guo","doi":"10.1016/j.diamond.2025.112847","DOIUrl":"10.1016/j.diamond.2025.112847","url":null,"abstract":"<div><div>The combination of carbon nanocages and MoS₂ can effectively enhance the rate performance of anode materials. However, optimizing the design of composite structures to achieve a balance between high capacity and cycling stability still remains highly challenging. This work demonstrates the successful construction of vertical MoS₂ nanosheet arrays on carbon nanocages (MoS_2-x/CNC) with strategic S-vacancy engineering. The optimized anode (MoS_2-x/CNC3–1) delivers exceptional sodium storage capabilities for half-cell (225 mAh g⁻¹ over 3000 cycles at 10 A g⁻¹) and full-cell (capacity retention of 87 % after 100 cycles). The superior performance originates from a synergistic nanoarchitecture integrating three critical features of enhanced active sites, optimized ion diffusion channels and efficient charge carrier mobility.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112847"},"PeriodicalIF":5.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109274","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":"Phase-field simulation of heteroepitaxial growth of diamond films","authors":"P.E. L'vov ,&nbsp;S.V. Bulyarskiy ,&nbsp;A.A. Pavlov ,&nbsp;Yu.V. Anufriev ,&nbsp;V.V. Sen'","doi":"10.1016/j.diamond.2025.112846","DOIUrl":"10.1016/j.diamond.2025.112846","url":null,"abstract":"<div><div>In this study, we develop the phenomenological phase-field model of formation of solid crystalline films during heteroepitaxial growth. The model accounts for the anisotropy of the surface energy of the crystalline phase and enables simulation of heterogeneous nucleation and growth dynamics of the nanocrystals with an arbitrary faceting within the defined crystal system. We simulate the heteroepitaxial growth of crystalline films using the example of diamond for different types of surface energy anisotropy corresponding to the cubic system. The dynamics of the nanosized film morphology are analyzed during the process of continuous deposition up to solid film formation. Typical mechanisms of crystalline film growth are observed in the simulation, including heterogeneous nucleation and growth of faceted nanocrystals, coalescence, some types of twinning, formation and motion of steps and terraces on the crystalline film surface, etc. The probable mechanisms of one-step and two-step nucleation of the crystalline phase are also discussed within the model.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112846"},"PeriodicalIF":5.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109278","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":"Fluorine-free strategy for green synthesis of 2D layered Co-boride (CoB) nanosheets with ultra-high energy density in supercapacitors and exceptional stability","authors":"Om Priya Nanda ,&nbsp;Sushmee Badhulika","doi":"10.1016/j.diamond.2025.112849","DOIUrl":"10.1016/j.diamond.2025.112849","url":null,"abstract":"<div><div>Two-dimensional (2D) metal boride (MBene) exhibit energy storage capabilities owing to their high specific surface area, tunable interlayer spacing, and electrical conductivity. Traditionally, the interlayer spacing in 2D metal borides is achieved by selectively etching the aluminum (Al) layers from layered transition metal borides (3D MAB phases) using hydrothermal chemical etching. Here, we report the first-ever synthesis of 2D Cobalt boride (CoB) utilizing a fluoride-free etching method with sodium hydroxide (NaOH) as the etchant. The successful synthesis is achieved through annealing followed by pro-longed ultrasonication and hydrothermal technique, which results in 2D cabbage-like layered porous nanosheet morphology as confirmed by scanning electron microscopy (SEM). Structural and compositional analyses using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) validate the removal of aluminum layers and formation of 2D CoB. Electrochemical measurements reveal that the 2D CoB has an areal capacitance of 692 mF·cm⁻² at a current density of 1 mA·cm⁻² within an optimized potential window of −0.3 to 0.45 <em>V</em> in 1 M H₂SO₄ supporting electrolyte. Further, an asymmetric device (CoB//Gr) operates within a wide voltage window of 1.5 <em>V</em> demonstrating an energy density of 84 μWh·cm⁻² at 1405 μW·cm⁻². Moreover, it demonstrates cycle life, retaining nearly 93.3 % of its initial capacity after 20,000 long cycles. These findings establish layered CoB as a promising material for high-performance energy storage, addressing the demand for efficient and sustainable energy solutions.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112849"},"PeriodicalIF":5.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154450","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":"Sulfidation-induced ZIF-67 melting and remodeling to enhance its interfacial bonding with hollow carbon microtubes for improving capacitive performance","authors":"Weijun Ma ,&nbsp;Xuxin Qiu ,&nbsp;Weihong Guo ,&nbsp;Xin Lu ,&nbsp;Jiarui Zhu ,&nbsp;Zhuoqi Wang ,&nbsp;Yi Zhang ,&nbsp;Qiuju Zheng ,&nbsp;Dan Liu ,&nbsp;Changlong Sun ,&nbsp;Dongdong Zhang","doi":"10.1016/j.diamond.2025.112841","DOIUrl":"10.1016/j.diamond.2025.112841","url":null,"abstract":"<div><div>A robust interfacial bonding between CoS₂ and porous carbon with hierarchical ion fast channels is crucial for fabricating capacitive materials with high stability and rate performance. Herein, a method for high-temperature sulfidation-induced ZIF-67 melting and remodeling at the surface of cotton-derived hollow tubular carbon fiber is employed to achieve the interfacial welding of porous carbon/CoS₂ with carbon fiber, thereby constructing a vascular-like scar-shaped CoS₂-C_C-C_KF. Through the in-situ reconfiguration of ZIF-67-derived carbon framework mediated by Co²⁺/2-MIM molar ratio, CoS₂-C_C-C_KF achieves the multiscale collaboration among the conductive network (cotton fiber-derived carbon, C_KF), the interface bridging layer (ZIF-67-derived carbon, C_C), and the active pseudocapacitive CoS₂ nanoparticles, forming an integrated ionic-electronic conductor hierarchical architecture. CoS₂-C_C-C_KF exhibits a low electron transfer impedance of 0.15 and a high ionic diffusion coefficient of 4.7 × 10⁻⁵ cm² s⁻¹ after calculation. CoS₂-C_C-C_KF exhibits a specific capacitance of 997.4 F g⁻¹ at a current density of 1 A g⁻¹, and it still maintains 81 % of its specific capacitance at 10 A g⁻¹, which is higher than that of CoS₂-C_A-C_KF (375.0 F g⁻¹, 69 %) and CoS₂-C_B-C_KF (638.0 F g⁻¹, 75 %). The assembled asymmetric supercapacitor achieves a high energy density of 47.4 Wh kg⁻¹ at 375.0 W kg⁻¹ and exhibits excellent cycle stability (maintaining 81 % capacity after 10,000 cycles). These results demonstrate that the melting reconstruction strategy of ZIF-67 on carbon substrate can enhance the interfacial bonding strength of porous carbon/ CoS₂, thereby improving their cycling stability in supercapacitors.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112841"},"PeriodicalIF":5.1,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145117838","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":"MOF-introduced Cu2Se/CoSe2 and carbon nanofibers: Complementary regulation of dielectric loss for enhanced electromagnetic wave absorption","authors":"Yue Sun ,&nbsp;Yanxiang Wang ,&nbsp;Yingfan Li ,&nbsp;Shichao Dai ,&nbsp;Bohan Ding ,&nbsp;Jinghe Guo ,&nbsp;Yanru Yuan ,&nbsp;Dong Zhang ,&nbsp;Dongming Liu","doi":"10.1016/j.diamond.2025.112842","DOIUrl":"10.1016/j.diamond.2025.112842","url":null,"abstract":"<div><div>Carbon nanofibers (CNFs) are widely used as electromagnetic wave (EMW) absorbing materials because of their excellent electrical conductivity, but their excessively high conductivity hinders EMWs from penetrating the interior of the material and being dissipated. In this work, bimetallic precursors were introduced into CNFs via MOF-on-MOF methods, and Cu₂Se/CoSe₂@CNFs composites were obtained through selenization treatment. MOFs and CNFs complement each other by balancing polarization loss and conductive loss to achieve optimal impedance matching. The electromagnetic parameters were tuned by varying the MOF loading amount. Cu₂Se/CoSe₂@CNF-2 achieved a minimum reflection loss of −40.74 dB at a thickness of 1.49 mm. In the RCS simulation, Cu₂Se/CoSe₂@CNF-2 demonstrated the best stealth performance. This study offers a new strategy for enhancing the performance of EMW absorbing materials through the complementary loss functions between MOF derivatives and CNFs.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112842"},"PeriodicalIF":5.1,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095847","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":"Circular hole Si based on graphene/InAs for nonreciprocal thermal radiation at angle of 13° for mid-infrared region","authors":"Ruijun Liu ,&nbsp;Bo Wang ,&nbsp;Jing Ye ,&nbsp;Xiaohu Wu ,&nbsp;Fangteng Zhang ,&nbsp;Qu Wang ,&nbsp;Zhengfa Hu","doi":"10.1016/j.diamond.2025.112839","DOIUrl":"10.1016/j.diamond.2025.112839","url":null,"abstract":"<div><div>As research into nonreciprocal thermal radiation progresses, there is a concurrent enhancement in energy conversion efficiency. However, the exploration of dual-polarized nonreciprocal thermal radiation remains insufficient. This study introduces a new method for dual-polarized nonreciprocal thermal emission using integrated graphene and magneto-optical materials. The structure is composed of reflective layer (Al), cylindrical nanopores (Si), graphene, substrate (SiO₂) and InAs. Results indicate that significant nonreciprocal thermal emission can be achieved when the angle is 13° and the magnetic field intensity is 5 T for mid-infrared region. The basic physical properties of the structure are clarified, and then the influence of magnetic field intensity and incident angle on it is analyzed. Finally, the magnetic field distribution is used to further explain nonreciprocal mechanism. The bidirectional polarized nonreciprocal emission can be achieved, which has a certain value for the research of controlling and improving the nonreciprocal thermal radiation efficiency.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112839"},"PeriodicalIF":5.1,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095851","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":"Novel hollow boron-nitride nanostructures","authors":"Osvaldo Yañez ,&nbsp;Ricardo Pino Rios","doi":"10.1016/j.diamond.2025.112837","DOIUrl":"10.1016/j.diamond.2025.112837","url":null,"abstract":"<div><div>This work introduces a new family of hollow boron nitride (BN) nanostructures, designed as isoelectronic analogs to the carbon-based Gaudiene architectures reported by Sundholm and co-workers. The B₃₆N₃₆, B₁₀₈N₁₀₈, B₂₁₆N₂₁₆ and B₃₂₄N₃₂₄ cages were constructed by replacing C<img>C bonds in their carbon counterparts with B<img>N pairs. GFN2-xTB calculations, validated by DFT for B₃₆N₃₆, confirm all structures as stable minima with large HOMO–LUMO gaps. Chemical bonding analysis reveals electron localization around nitrogen atoms and a non-aromatic character. Tight-binding molecular dynamics simulations demonstrate exceptional thermal stability up to 1000 K, with all systems retaining their hollow topology; the B₂₁₆N₂₁₆ cage exhibits superior resilience. At high temperatures, larger systems undergo a size-dependent transformation toward stable hexagonal BN motifs, accompanied by significant energy stabilization. These results establish a novel class of BN nanostructures with promising properties for nanotechnology applications.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112837"},"PeriodicalIF":5.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095961","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":"High frequency signal performance of PDMS based pressure conductive rubber with core-shell onion-like carbon-Ni fillers","authors":"Shih Chun Tseng ,&nbsp;Cheng-I Chang ,&nbsp;Chun-Yu Kuo ,&nbsp;Hung-Yin Tsai","doi":"10.1016/j.diamond.2025.112836","DOIUrl":"10.1016/j.diamond.2025.112836","url":null,"abstract":"<div><div>The development of pressure conductive rubber (PCR) with enhanced high-frequency performance is crucial for semiconductor testing interfaces. In this study, core shell onion-like carbon‑nickel (CNi) particles were synthesized via a hydrothermal process, systematically optimizing six key parameters to improve bonding interactions with metallic nickel. Functionalization of onion-like carbon (OLC) was confirmed by Fourier Transform Infrared (FTIR) analysis, demonstrating successful carboxyl (-COOH) surface modification, which facilitated thiol exchange reactions. Experimental results showed that insufficient acid treatment times led to incomplete core-shell structures, while excessive reaction temperatures induced sulfur crystallization, hindering coating uniformity. By refining synthesis conditions—including a 6-hour acid treatment, a reaction temperature of 130 °C, and a 72-hour reaction time—uniform CNi coatings with an average thickness of 450 nm were achieved, as validated by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) analyses. The influence of magnetic field strengths (0.7 T, 1.0 T, and 1.3 T) and magnetization durations (3 and 6 h) on particle alignment within a Polydimethylsiloxane (PDMS) matrix was investigated. The highest surface area packing factor (22.8 %) was observed under a 1.0 T field for 6 h, while saturation effects limited further improvement at 1.3 T. Insertion loss measurements revealed that the CNi:Ni ratio strongly influenced electromagnetic performance. The 1:1 ratio exhibited the widest bandwidth (−3 dB at 471.84 MHz) and the highest material density, suggesting an optimal balance between conductivity and dielectric properties. These findings demonstrate the potential of CNi-Ni composites for tunable microwave devices and high-speed semiconductor testing applications.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112836"},"PeriodicalIF":5.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095959","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":"Tribochemical stability and friction mechanisms of graphene nanoplatelets in engine oil at elevated temperatures","authors":"Sukanta Bhowmick ,&nbsp;Zaixiu Yang ,&nbsp;Ahmet T. Alpas","doi":"10.1016/j.diamond.2025.112838","DOIUrl":"10.1016/j.diamond.2025.112838","url":null,"abstract":"<div><div>The tribochemical behaviour and thermal stability of graphene nanoplatelets (GNPs) as boundary-lubricating additives in engine oil were investigated through steel-on-steel sliding tests from 25 °C to 120 °C. At 25 °C, GNPs had negligible effect on coefficient of friction, COF: 0.083 in oil-only vs. 0.081 in oil + GNPs). At 50 °C and 80 °C, the COF decreased significantly with GNP addition—from 0.106 to 0.077 (∼27 %) and from 0.114 to 0.088 (∼22 %), respectively. At 120 °C, only a modest reduction was observed (0.139 to 0.123), indicating a decline in additive effectiveness at elevated temperature. Raman and X-ray photoelectron spectroscopy (XPS) - analysis showed that the tribolayer remained chemically stable up to ∼80 °C, with predominant C–C/C–H bonding and limited structural disorder. At and above 80 °C, oxidation became evident, with a shift to O–C=O species and increased D and D′ band intensities. HR-TEM revealed bending and fragmentation of graphene layers embedded within an Fe₂O₃-rich tribofilm, with interlayer spacings increasing to 0.34–0.36 nm. These results indicate that GNPs reduce friction and wear by forming a carbon-rich tribolayer, but oxidation and structural degradation beginning near 80 °C limit their stability at higher temperatures. The findings provide insight into the temperature-dependent structural evolution of - GNPs under boundary-lubricated conditions and suggest the need for stabilization strategies to extend GNPs high-temperature tribological performance.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112838"},"PeriodicalIF":5.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145154452","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":"High surface area activated carbon for sustainable tetracycline adsorption: Mechanism, regeneration and efficacy in realistic water matrices","authors":"Hari Om Singh ,&nbsp;Gokulakrishnan Murugesan ,&nbsp;Thivaharan Varadavenkatesan ,&nbsp;Raja Selvaraj ,&nbsp;Ramesh Vinayagam","doi":"10.1016/j.diamond.2025.112835","DOIUrl":"10.1016/j.diamond.2025.112835","url":null,"abstract":"<div><div>This study systematically examines the synthesis, structural properties, and adsorption performance of activated carbon prepared using Kachnar pods (KP–AC) to remove tetracycline (TC) from aqueous media. KP–AC was synthesized via H₃PO₄ activation, yielding a highly porous, heterogeneous, and functionalized adsorbent with a high BET surface area (1528.14 m²/g) and mesoporosity. Various characterization analyses revealed a rough, flake-like structure with oxygenated and phosphorus-containing functional groups that facilitate strong interactions with TC through electrostatic interactions, π–π stacking, and hydrogen bond formation. Batch adsorption experiments demonstrated pH-dependent uptake, with maximum removal at pH 4, driven by minimized electrostatic repulsion and enhanced non-covalent interactions. Adsorption kinetics followed a pseudo-second-order model, while equilibrium data fitted best to the Freundlich isotherm. The high monolayer capacity from the Langmuir model (201.3 mg/g) underscored KP–AC's strong adsorption potential. Thermodynamic parameters revealed the spontaneity and endothermic nature of adsorption. KP–AC also exhibited good regeneration performance, retaining 52.9 % of its initial removal efficiency after four adsorption–desorption cycles, and maintained robust performance across diverse real water matrices despite moderate reductions. These findings establish KP–AC as an efficient, sustainable, and regenerable adsorbent for TC remediation from water.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112835"},"PeriodicalIF":5.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095960","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}