APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Jianxiang Lin,Shaoping Chen,Zhenyang Qi,Wenhao Fan,Qiang Zhang,Tao Zhang,Zhiyi Zhang,Qingsen Meng
Significant physicochemical differences between metals and thermoplastics pose challenges for achieving strong interfacial bonding under conventional forming processes. This work presents a novel approach using an external electric field (EEF) to activate functional groups at metal-polymer interfaces, forming complex chemical bonds and strong heterogeneous connections. Silane-modified PA66 composites filled with high-content aluminum spheres were fabricated. Experimental results show that the chemical bonding between Al and PA66 under EEF is due to extensive functional group reactions and secondary bonding within Al-PA66 interface, achieving a remarkable ultimate tensile strength of 65 MPa for the composite with 50 wt% Al filling. Moreover, dissimilar joints of composites and 6061T6, made by friction stir welding, exhibit high strength due to the formation of a “Novel Net-Metallurgy Bonding Structure” during frictional heat transfer. This work provides new insights and theoretical guidance for interfacial bonding in metal-polymer heterogeneous interfaces.
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PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
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2025
·Vol. 222
·期 22
·2500553
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IF 1.9
Yaqi He,Xinhua Li,Lihua Zhang,Jiawei Xu,Songhua Chen,Zongqing Ma
In this article, a batch of high-performance Sn-doped Nb 3 Al superconductors is prepared through mechanical alloying and subsequent low-temperature sintering. This article comparatively analyzes the superconducting properties, phase structure, and microstructure of Sn-doped Nb 3 Al under different sintering temperatures and sintering times to determine the most suitable sintering process for Sn-doped Nb 3 Al. The results show that the optimum sintering temperature of Sn-doped Nb 3 Al bulks is 800 °C, with an optimal sintering time of 5 h. The T c value of Sn-doped Nb 3 Al bulk obtained under this sintering condition is 14.8 k, and the value of J c is as high as 6.2 × 10 4 A cm −2 (4.2 K, 5 T). The elevated sintering temperature (900 and 1000 °C) results in significant growth of both Nb 3 Al grain size and Nb 2 Al nanoparticles. This reduces the number of effective pinning centers in the superconducting phase of Sn-doped Nb 3 Al, which severely weakens the flux pinning effect. As a result, the J c performance deteriorates gradually as the sintering temperature increases from 800 to 1000 °C. The extended duration of sintering time results in the formation of sintering holes, which significantly disrupt the continuity of the Nb 3 Al superconducting phase matrix and degrade its superconducting properties.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Wei Huang,Yao-feng Mao,Jie Chen,Jian Wang,Wei Cao,Xing-quan Zhang,Jun Wang
Aluminum/Polytetrafluoroethylene (Al/PTFE) composites have attracted a great deal of attention due to their remarkable energy density and wide range of applications. Unfortunately, the inert oxide layer (Al 2 O 3 ) on the surface of Al and the interfacial contact area between PTFE and Al seriously impact the combustion reaction kinetics and energy output efficiency. Here, an approach is utilized to significantly enhance the interfacial contact area between Al and PTFE through F 2601 serving as the bridging agent. The ignition, combustion reaction, and energetic performance (pressure and combustion heat) can be adjusted by varying the particle size of Al and PTFE content. The energy release efficiency of bridging Al/PTFE has been improved significantly as PTFE content increases and the particle size of Al decreases. The bridging Al/PTFE with 10 μm Al and nano Al exhibit a bright and wide flame, and a fierce flame propagation process, as well as much high pressure output (167.73 kPa and 199.92 kPa) and heat release (11879 J/g and 12322 J/g). Furthermore, the critical mass ratio (approximately 88/12) of bridging Al/PTFE for self-sustained combustion has been obtained for the first time. The improvement of energy output performance is attributed to the interfacial contact between PTFE and Al and the reaction of fluorine and Al 2 O 3 resulted from bridging Al/PTFE through F 2601 . The prepared bridging Al/PTFE with high energy output characteristics holds great potential in solid propellants, reactive materials, and other high-energy fuels.
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Inorganic Chemistry Frontiers
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2025
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IF 6.4
Mengqi Man,Yong Guo,Tianran Hu,Ying Sun,Aikai Yang,Xiqing Chen,Xingchao Wang
The preparation of SiOx materials that exhibit enduring stable cycling performance and high initial coulombic efficiency (ICE) through cost-effective methods remains a substantial hurdle. Herein, a hybrid carbon-coated SiO-20/G@TMA composite was synthesized using an integrated strategy that combines high-energy ball milling and high-temperature carbonization, employing graphene (G) and trimeric acid (TMA) as carbon sources. The three-dimensional crosslinked conductive network, formed by the mechanically flexible graphene and the carbon-rigid TMA, induces the generation of a LiF-rich SEI film. This film reduces interfacial side reactions and improves the ICE to 74.2%. Furthermore, the SiO-20/G@TMA electrode, characterized by a rigid–flexible hybrid structure, demonstrates excellent capacity retention and impressive rate performance over extended cycling periods. The discharge capacity of the SiO-20/G@TMA anode reaches 848.3 mA h g−1 at a current density of 0.5 A g−1, with a reversible capacity of 77% (about 649.1 mA h g−1) maintained after 600 cycles. When paired with a LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode, the SiO-20/G@TMA anode achieves a reversible capacity of 140.0 mA h g−1 at the current density of 0.2 A g−1. After 100 cycles, the capacity retention rate is 85% and the energy density is 474.7 Wh kg−1.
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RSC Advances
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2025
·Vol. 15
·期 7
·5042-5059
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IF 4.6
Irfan Ijaz,Aysha Bukhari,Ammara Nazir,Ezaz Gilani,Hina Zain,Attia Shaheen,Mohammed Rafi Shaik,Mujeeb Khan,Jilani P. Shaik
The simultaneous removal of antibiotics and heavy metal ions is of utmost importance because of their hazardous effects on the environment and humans. For the adsorption of sulfamethoxazole (SMX) and neodymium (Nd3+) in mono- and binary contaminant systems (SMX–Nd3+ and Nd3+–SMX), a novel composite was designed using sulfated fucan (FuS), MXenes, and α-aminophosphonates (AMPs) in this study. As far as we know, the concurrent adsorption of SMX and Nd3+ employing materials made of MXenes, FuS, and AMPs with this specific structure has not yet been reported. At 318 K, the FuS@MXene@AMP adsorbent demonstrated excellent adsorption capacities of 448.91 and 255.78 mg g−1 for SMX and Nd3+, respectively. The pseudo-first-order (PSO) kinetic model was the most appropriate for depicting the adsorption of SMX and Nd3+ among all the tested kinetic models. The adsorption of SMX and Nd3+ is better described by the Langmuir isotherm model with a higher value of adsorption capacity and R2. The simultaneous presence of Nd3+ and SMX promoted mutual sorption between the antibiotic and metal ions in the binary systems. The results of FTIR and XPS studies indicated that the removal mechanisms were primarily due to hydrogen bonding, complexation, electrostatic interaction, and π–π interaction.
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INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
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2025
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IF 2.5
Yuge Liu,Zhiguo Li,Yongmei Jia
The fast detection of environmental contaminants catechol (CC) and hydroquinone (HQ) is of great importance to public health. In this research, a composite was firstly synthesised by a pre-exfoliation method, the components of which were Ni-Al-LDH and reduced graphene (rGO). This material was then utilised in the development of a highly sensitive biosensor for determining CC and HQ. The construction procedure involved modification of glassy carbon electrode (GCE) by the composite and laccase (LAC). Tests conducted by electrochemical methods showed the addition of laccase can greatly improve the response signal of electrochemical measurements on the composite modified GCE to CC and HQ. The electrochemical tests were performed by utilising 0.1 mol/L phosphate-buffer. When separately detected, the detecting linear range for CC by the biosensor was 0.009–0.58 and 0.95–4.4 mmol/L. When it comes to HQ, the range was 0.009–0.57 and 0.95–4.4 mmol/L on the composite/enzyme modified electrode. When the biosensor was used for detecting CC and HQ together, the linear ranges were both 0.019–0.56 and 1.0–4.4 mmol/L. The detection limits calculated for simultaneous detection were 0.75 and 0.47 μmol/L, respectively. The sensor also possessed excellent sensitivity, selectivity and long stability. For applicability of the biosensor, it was used in analysing the two substrates in real water samples, and the recoveries were acceptable.
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Defence Technology
·
2025
·
IF 5.9
Xiandie Zhang,Zhijie Fan,Heng Xu,Jinbin Zou,Chongqing Deng,Xiang Zhou,Xiaode Guo
Al/NH 4 CoF 3 - Φ ( Φ = 0.5, 1.0, 1.5, 2.0 and 3.0) binary composites and Al-NH 4 CoF 3 @P(VDF-HFP) ternary composites are fabricated via ultrasonication-assisted blending and electrostatic spraying. The effect of equivalence ratio ( Φ ) on the reaction properties is systematically investigated in the binary Al/NH 4 CoF 3 system. For ternary systems, electrostatic spraying allows both components to be efficiently encapsulated by P(VDF-HFP) and to achieve structural stabilization and enhanced reactivity through synergistic interfacial interactions. Morphological analysis using SEM/TEM revealed that P(VDF-HFP) formed a protective layer on Al and NH 4 CoF 3 particles, improving dispersion, hydrophobicity (water contact angle increased by 80.5% compared to physically mixed composites) and corrosion resistance. Thermal decomposition of NH 4 CoF 3 occurred at 265 °C, releasing NH 3 and HF, which triggered exothermic reactions with Al. The ternary composites exhibited a narrowed main reaction temperature range and concentrated heat release, attributed to improved interfacial contact and polymer decomposition. Combustion tests demonstrated that Al-NH 4 CoF 3 @P(VDF-HFP) achieved self-sustaining combustion. In addition, a simple validation was done by replacing the Al component in the aluminium-containing propellant, demonstrating its potential application in the propellant field. This work establishes a novel strategy for designing stable, high-energy composites with potential applications in advanced propulsion systems.
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Defence Technology
·
2025
·
IF 5.9
Wei Huang,Yaofeng Mao,Sijia Yu,Longjie Huang,Jie Chen,Cui Nie,Xingquan Zhang,Fude Nie,Jun Wang
The energy release of energetic composites is severely limited by the inert alumina (Al 2 O 3 ) layer on the surface of aluminum (Al). Polytetrafluoroethylene (PTFE) could eliminate Al 2 O 3 layer due to its highly electronegativity and oxidability of fluorine. However, adding PTFE particles would weaken interfacial interactions resulted in poor mechanical properties and interfacial exothermic reaction. Herein, a bridging Al-PTFE as fuel and interfacial reinforcing agent was added and used to prepare LLM-105/Al-PTFE microspheres, achieving both high energy output and excellent mechanical properties. The energy release and combustion reaction performance of LLM-105/Al-PTFE microspheres are significantly improved due to high reaction heat and increased interfacial reaction area of Al-PTFE. The maximum pressure and pressurization rate of LLM-105/Al-PTFE microspheres are 164.06 kPa and 29.88 kPa/s, respectively, which are 40.11% and 16.67% higher than those of physical mixed samples. Furthermore, the tensile strength and compressive strength of LLM-105/Al-PTFE microspheres are 100.40% and 26.47% higher than those of LLM-105/Al. This work provides a new approach to improve the energy release and mechanical properties for energetic composite.
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ACS Applied Electronic Materials
·
2025
·
IF 4.7
Zhixian Wu,Xueyong Zheng,Chunli Jiang,Junhan Xie,Weimin Liu,Bo Li,Hechun Lin,Hui Peng,Chunhua Luo
Tin (Sn)-based perovskite light-emitting diodes (PeLEDs) have garnered significant attention owing to their superior optoelectronic properties, affordable solution processing, and environmental friendliness. However, the properties of Sn-PeLEDs trail those of their lead (Pb) counterparts. The main obstacle is the easy oxidation of Sn2+ to Sn4+ as well as fast crystallization, leading to poor film quality with many defects. Herein, a convenient and effective interface engineering strategy is reported to fabricate (2-thiopheneethylamine)2SnI4 (TEA2SnI4) PeLEDs by introducing different peptides into the PEDOT:PSS hole-transport layer (HTL). Benefiting from the interaction between the peptide molecules and the Sn-perovskite nuclei, the crystallization dynamics are effectively adjusted, leading to an improved film morphology. At the same time, the multiple functional groups of peptides can suppress Sn2+ oxidation and passivate interface defects. Therefore, perovskite films with improved luminescence efficiency are obtained. The perovskite films are further used for the fabrication of pure red PeLEDs with enhanced performance. In particular, the optimized devices based on Leu-Gly-Gly (LGG) achieve a peak external quantum efficiency of 0.5% and a brightness of 136 cd m–2, which are about 2 and 3 times larger, respectively, than those of the reference device. This research offers a general strategy to improve the performance of Sn-PeLEDs via peptide interface engineering.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xuechao Liu,Mao Chen,Chunyan Shi,Guoqi Liu,Hongxia Li,Hailong Wang,Bingbing Fan,Yongqiang Chen
In this work, polycrystalline cubic boron nitride (PcBN) carbide insert was prepared by a six-anvil high-pressure apparatus at 1500 °C and 5.5 GPa, integrated sintering with different alloy substrates of the Co content. This work studied the effects of different Co content in alloy substrates on phase composition, microstructure, and mechanical properties of the PcBN carbide insert. The result shows that the binder reacted with cBN particles to produce AlN, AlCo, TiB 2 , W 2 B, and Co 2 B. At the same time, transgranular fracture is wide spread in the sintered body. The flexural strength and hardness of the PcBN carbide insert first increase and then fall. When the alloy substrate is WC-11.5 wt% Co, the PcBN carbide insert shows excellent comprehensive performance, with the flexural strength and hardness reaching 1675.67 MPa and 4100.51 Hv, respectively. Through integrated sintering, Co in the alloy substrate diffused and reacted with the binder in the cBN network at the bonding interface, forming a transition area that significantly improves the bonding strength.
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CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Mian Yang,Kaihua Chen,Shenghui Guo,Ming Hou,Jiyun Gao,Junwen Zhou,Shuhao Shi,Li Yang
In this paper, the self-propagating reaction of the Ti–SiC–C system for synthesising Ti 3 SiC 2 -based diamond composites is ignited by the combustion of Ni–Al alloy powders in a microwave field. The heating curves of Ni–Al-assisted microwave sintering show that the self-propagating reaction could be successfully ignited after heating samples to 685.2 °C in a microwave field for 456 s. This finding indicates that ignition could occur at temperatures below the diamond graphitisation temperature (727 °C). X-ray diffraction analysis indicates that the sintered samples primarily comprise Ti 3 SiC 2 , TiC, Ti 5 Si 3 and C. Scanning electron microscopy coupled with energy dispersive spectroscopy observations demonstrates that the diamond grains are tightly bonded with the surrounding matrix and are intact. The best wear ratio of 302.26 was obtained for the Ti 3 SiC 2 -bonded diamond composite when the diamond grain size was 140/170 mesh and the molar ratio of Ti, SiC and C was 3:1.1:0.9.
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MATERIALS CHARACTERIZATION
·
2025
·
IF 5.5
Yaju Zhou,Jingyi Zhou,Weiwei Zhang,Jianglei Fan,Shen Wu,Xiuqing Li,Shizhong Wei
Oxide dispersion strengthened (ODS) Cu alloy is a kind of structural material with high thermal conductivity and high stability. It is promising to maintain mechanical integrity under thermal conductivity and high temperature conditions. These excellent properties are directly or indirectly attributed to the ultra-high number density of nano oxide particles, which act as a strong barrier for grain growth, dislocation slip and grain boundaries (GBs) slip. In this study, Cu-Cr-Y-Al-Ti-Si and ODS Cu-Cr-Y-Al-Ti-Si alloys were prepared by combining mechanical alloying with spark plasma sintering (SPS) technology. The influence of Cu 2 O on the microstructure, mechanical properties, and thermal stability of the Cu-Cr-Y-Al-Ti-Si alloy were investigated. Both alloys exhibited a heterogeneous mixture of coarse and fine grain structures. However, the addition of Cu 2 O led to grain refinement and the precipitation of a high density of uniformly distributed, nano-sized oxide particles throughout the copper matrix. Compared to the Cu-Cr-Y-Al-Ti-Si alloy, the ultimate tensile strength of the ODS Cu-Cr-Y-Al-Ti-Si alloy escalated from 409 MPa to 482 MPa, while the elongation slightly decreased from 17.2 % to 15.2 %. The ODS CuCrYAlTiSi alloy also demonstrates a room temperature thermal conductivity equivalent to 62.8 % of pure copper, and exhibits ultra-high microstructural stability after annealing at 600 °C for 100 h. The outstanding strength, ductility and high-temperature stability are primarily owing to the coherent nano-sized Y-X-O (X = Al, Ti, Si) particles dispersed in the ultra-fine grain copper matrix. These findings indicate that by integrating component design and process optimization, it is possible to effectively and efficiently produce ODS CuCrYAlTiSi alloy, which holds promising application prospects in structural materials for nuclear fusion reactors.
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