COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2026
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IF 8.2
Baoyue Zhang,Ruixue Wang,Fan Wan,Xiaoyun Liu,Hongyao Xu,Shanyi Guang
Developing lightweight and multifunctional electromagnetic absorption (EMA) materials remains important for advanced electromagnetic protection applications. Herein, we report a multifunctional composite aerogel constructed through a host–guest engineering strategy. The polyimide (PI) framework serves as the host matrix, while magnetic hollow Fe 3 O 4 @CoNi@PDA microspheres and conductive carbon nanotubes (CNT) act as functional guests. Molecular dynamics simulations indicate hydrogen-bond-assisted interactions between acidified CNT and PAA chains during precursor assembly. These interactions help support the formation of a stable porous framework. The optimized PCH-3 aerogel achieves a minimum reflection loss (RL min ) of − 33.1 dB at 2.8 mm and a wide effective absorption bandwidth (EAB) of 7.9 GHz at 3.6 mm. Beyond EMA performance, PCH-3 shows low density, thermal insulation capability, and mechanical resilience. Its density and thermal conductivity are 24.0 mg cm⁻ 3 and 0.043W m −1 K −1 , respectively. It also retains 97% of its stress after 50 compression cycles. Furthermore, radar cross-section (RCS) simulations indicate a maximum reduction of 30.2 dB 2 under the given simulated conditions. This study provides a feasible strategy for designing lightweight multifunctional aerogels for electromagnetic protection and thermal management.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Shifan Zhang,Dongmei Lv,Aling Zhou,Di Wang,Dandan Cai
Developing efficient and inexpensive electrocatalysts for oxygen evolution reaction (OER) is currently a research hotspot in the field of water splitting for hydrogen production. In this work, a series of oriented CoNi x -metal organic frameworks nanosheets (CoNi x -MOFs, x = 0.23, 0.48, 0.96) were successfully prepared on carbon fiber paper (CFP) to form the CoNi x -MOFs/CFP arrays by a facile construction. Electrochemical test results indicated that the optimized CoNi 0.48 -MOF/CFP exhibits the ultralow overpotential of 206 mV at a current density of 10 mA cm −2 and low Tafel slope of 37 mV dec −1 . Moreover, an in-depth exploration of the active site shows that the actual active species is CoNi-MOF/CoNiOOH composite for OER. The excellent OER performance could be mainly attributed to the formation of low-crystalline CoNiOOH, electronic coupling between Ni and Co metals and the cross-linked nanostructure . This study will be helpful for expanding the sheet structural design of MOF catalysts and provide an example for the exploration of MOF active species.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Fei Wu,Zihao Liu,Jiqi Wang,Tariq Shah,Pei Liu,Qiuyu Zhang,Baoliang Zhang
Transition metal carbide (MXene) has attracted much attention due to its special structure and surface chemical properties. However, like other two-dimensional (2D) materials, its application is severely affected by stacking and agglomeration. Herein, we construct intertwined one-dimensional (1D) heterostructure via the assembly of MXene and metal–organic frameworks (MOFs) without any assistance of template and rigid framework. The results have shown that by manipulating the loading of MOFs on 1D MXene fibers, the growth of CNTs can be effectively controlled, thereby realizing the regulation of electromagnetic parameters. The 3D cross-linked network constructed by intertwined 1D heterogeneous components (MXene fibers/CoNi/C and CNTs/CoNi) features extensive heterogeneous interfaces, hierarchical pore structure and desirable conductivity, exhibiting superior microwave absorbing properties. Notably, under a matching thickness of 1.6 mm, the minimum reflection loss (RL min ) of the absorber (MMC) exceeds −51.6 dB, and the effective absorption bandwidth (EAB, RL < −10 dB) covers 4.5 GHz (13.2–17.7 GHz). The results might shed light on the preparation of efficient microwave absorbers.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2022
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IF 10.319
Qiqin Liang,Lei Wang,Xiaosi Qi,Qiong Peng,Xiu Gong,Yanli Chen,Ren Xie,Wei Zhong
Impedance matching characteristics and loss capabilities including magnetic loss, polarization loss and conduction loss are critical factors to improve microwave absorption performances (MAPs). To elevate these aspects, herein, yolk-shell structured CoNi@Air@C/SiO 2 @Polypyrrole (PPy) magnetic multicomponent nanocubes (MCNCs) were designed and successfully fabricated in high efficiency through a continuous co-precipitation route, classical Stöber method, thermal treatment and polymerization reaction. The obtained results indicated that the formation of SiO 2 effectively stabilized the cubic geometrical morphology and yolk-shell structure during the high-temperature pyrolysis process. The introduction of PPy greatly boosted their polarization loss and conductive loss capabilities. Therefore, the as-prepared yolk-shell structured CoNi@Air@C/SiO 2 @PPy MCNCs presented superior MAPs compared to CoNi@Air@C/SiO 2 MCNCs. Furthermore, by regulating the content of PPy, the obtained CoNi@Air@C/SiO 2 @PPy MCNCs displayed tunable and excellent comprehensive MAPs in terms of strong absorption capabilities, broad frequency bandwidths and thin matching thicknesses, which could be ascribed to the unique structure and excellent magnetic-dielectric synergistic effect. Therefore, our findings provided an alternative pathway to effectively utilize the magnetic-dielectric synergy and loss capabilities for the developing yolk-shell structured magnetic MCNCs as the strong wideband microwave absorbers.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Yunpeng Liu,Zhongxin Chen,Yunyi Yang,Ren Zou,Binglu Deng,Linxin Zhong,Kian Ping Loh,Xinwen Peng
The major bottleneck in self-powered water splitting devices by renewable energy lies in the kinetically sluggish oxygen evolution reaction (OER), which only produces low-value oxygen. Herein, we explore sucrose electrooxidation as an alternative anodic reaction for production of valuable chemicals at a reduced electricity consumption. By developing a reversible redox cycle of Ni 2+ /Ni 3+ and Co 2+ /Co 3+ in the CoNi layered double hydroxide (LDH), the required voltage of sucrose oxidation for 100 mA cm −2 is reduced by 240 mV compared to oxygen evolution. The sucrose electrooxidation by CoNi LDH is a two-step reaction including the electrooxidation of Ni 2+ /Co 2+ to Ni 3+ /Co 3+ and the spontaneous reaction between Ni 3+ /Co 3+ and sucrose. By feeding with natural sugarcane juice, a solar-driven electrolyser is assembled for the co-production of value-added formic acid and hydrogen. Our work demonstrates a sustainable route for integrating hydrogen production and biomass electrooxidation for energy applications.
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高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
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IF 4.6
Zijun Niu,Yingkun Shi,Sijia Liu,Yu Lv,Songlei Wang
In this study, a new electrochemical sensing platform for sulfamethazine (SDM) was prepared using MIP/CNT/MoS 2 -CoNi/GCE as an electrode modifier on a glassy carbon electrode (GCE). Firstly, theoretical simulations and quantum calculations based on density-functional theory (DFT) accelerate the prediction of the template molecule-to-functional monomer ratio. Nanocatalytic materials (CNT/MoS 2 -CoNi) loaded with metal ions Co and Ni were synthesised by a simple solvothermal method and then drop-coated onto GCE. The molecularly imprinted polymer (MIP) film with specific recognition sites can be generated on the modified electrode by electropolymerization. The successful formation of nanocatalytic materials was assessed by various characterisations such as scanning electron microscopy and X-ray diffraction. Under optimal conditions, the constructed sensor showed excellent detection efficiency for the oxidation of SDM in phosphate buffer solution (PBS, pH = 8.0) with a linear range of 0.1 μM to 800 μM and a detection limit of 0.033 μM. The sensor exhibits exceptional stability, reproducibility, and anti-interference capabilities, rendering it suitable for the detection of SDM residues in meat.
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高影响因子
Analytical Methods
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2025
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IF 2.6
Shuxian Ren,Jihong Fu,Guoqi Liu,Haipeng Zhang,Boshen Wang,Junli Yu
The unreasonable use of organic dye leads to excessive residues in environmental water, which seriously threatens human health and the natural environment. In this paper, a spherical flower-like magnetic Fe3O4@CoNi layered double hydroxide@silver nanoparticle (Fe3O4@CoNi LDH@Ag NPs) SERS substrate was successfully fabricated via electrostatic self-assembly and applied for the sensitive detection of methylene blue (MB) in environmental water. The rapid concentration and separation of the SERS substrate from the water sample could be achieved using an external magnet. The Fe3O4@CoNi LDH@Ag NPs could not only rapidly enrich the trace analytes because of their outstanding absorptive capacity but also effectively enrich the cationic dye molecules to the “hot spots” through electrostatic interactions, resulting in higher SERS selectivity. Excellent SERS performance was observed, which exhibited a high enhancement factor (EF) of 5.81 × 108 and a low detection limit (LOD) of 1 × 10−11 mol L−1 with R6G as the probe molecule, and also possessed exceptional reproducibility and stability for at least 28 days. The Fe3O4@CoNi LDH@Ag NPs were used to detect MB, which displayed wide linearity (1 × 10−10 to 1 × 10−4 mol L−1) and high recoveries (89.68–103.72%). This Fe3O4@CoNi LDH@Ag NP substrate offers easy separation and selective detection of cationic dyes, providing potential application for the detection of environmental contaminants.
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xuemei Meng,Huan Long,Xiaohui Zhou,Wu Xia,Xiangsi Wu,Xianwen Wu,Yunlong Liu,Xianming Wu
Non-precious metal catalysts with efficient bifunctional catalytic performance are urgently needed in rechargeable Zn-air battery. Herein, a 3D N-doped double-walled hollow carbon spheres/nanotube CoNi alloy hybrid (CoNi-NC/DLHCs) was rationally constructed by the optimized Stöber method combined with the epitaxial attachment MOF strategy. Take advantage of effectively utilized the active site of 3D open architecture, accelerated intermediate transport, and the large specific surface area ( S BET ), CoNi alloys exerted maximum oxygen reduction reaction (ORR) activity and oxygen evolution reaction (OER) activity. The as-prepared CoNi-NC/DLHCs catalyst manifests a higher half-wave potential of 0.85 V and Tafel slop of 88 mV dec -1 for ORR, as well as satisfied OER activity with Tafel slope of 92 mV dec -1 and overpotential at 10 mA cm -2 of 275 mV. A liquid zinc-air battery equips with CoNi-NC/DLHCs achieved a satisfying open circuit potential (OCP) of 1.51 V, a maximum peak power density of 183.4 mW cm -2 , and a cycle endurance stability of more than 700 h. This research highlights good prospects in designing oxygen electrocatalysts catalysts in the metal-air battery field.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yizhi Ma,Yunxiang Yuan,Hongchao Zhang,Luning Sun,Sainan Wei
The development of electromagnetic wave-absorbing materials has attracted much attention in recent years, as the broad application of electronic devices in communication and military radar operations has brought about serious problems such as electromagnetic pollution and interference. In this study, a bimetallic MOF/MXene based electromagnetic nanocomposite CoNi@Ti 3 C 2 T x /CNT/TiO 2 (CNTCT) is developed. The composite system with multiple heterogeneous interfaces is successfully constructed by constructing a porous few-layer MXene substrate through the H 2 O 2 etching technique, combined with electrostatic self-assembly of CoNi-MOF-74 and a high-temperature annealing process. The porous MXene provides high surface area and defect sites, the CNT/TiO 2 hetero-interface generated by pyrolytic reduction effectively promotes the multi-polarization mechanism, and the magnetic CoNi component significantly enhances the magnetic loss performance through the natural/exchange resonance and eddy current loss to realize the high-performance broadband electromagnetic wave absorption. CNTCT-3 composites obtained −73.82 dB RL min at 9.74 GHz (matched thickness of 2.53 mm) and 3.79 GHz EAB; when the thickness was reduced to 1.93 mm, the EAB was expanded to 5.65 GHz. This work provides insights into potential applications of novel MXene-derived composites in electromagnetic wave absorption through dielectric-magnetic synergistic effects and structural modulation applications.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Zehao Tan,Guiru Zhang,Jun Li,Enping Wang,Liuxuan Luo,Shuiyun Shen,Junliang Zhang
Single-atom catalysts (SACs) have received extensive attention due to their theoretically 100 % atomic utilization, low cost and unique catalytic performance. In this work, CoNi@CoNCs were prepared via impregnation-reduction method. CoNi@CoNCs possess coexisting Co–N–C SAC and CoNC-coated CoNi dilute alloy nanoparticles (NPs), in which Co NPs are doped with trace Ni amount. After optimizing the Co/Ni atomic ratio and heat treatment temperature, the CoNi@CoNCs exhibit exceptional acidic oxygen reduction reaction (ORR) activity with a half-wave potential of 0.754 V and a double-layer capacitance of 48.42 mF cm −2 in 0.1 M HClO 4 solutions. After 10,000 cycles of degradation test, the half-wave potential of the Co 8 Ni 1 @CoNC-600(Co 8 Ni 1 Co/Ni atomic ratio 8:1 in the precursor; 600 = heat treatment temperature 600 °C) only decreased by 35 mV. According to advanced and comprehensive experimental and theoretical analyses, the reasons for the improvement toward acidic ORR activity and stability of the CoNi@CoNC can be attributed to the following several reasons.(1) the Co 2+ and Co–N electron structures influenced by the trace Ni amount.(2) The unique CoNC-coated structure. (3) The synergistic effect between CoNi NPs and Co single atoms. This work helps to expound the specific role of NPs in SACs, providing theoretical guidance for the further development of non-noble metal NPs and single-atom co-component catalysts.
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高影响因子
COMPOSITES PART B-ENGINEERING
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2026
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IF 14
Cao Yang,Yan Wang,Chenxing Liu,Zhehong Lu,Suwei Wang,Wei Jiang
Co/Ni regulation tunes radial morphology and catalytic graphitization。. • Radial spines favor local-field concentration and multiple scattering. • At 1.76 mm and 15 wt%, RL = −57.86 dB with 6.39 GHz EAB, covering full Ku band. • DFT reveals composition-dependent charge redistribution at CoNi/C interfaces. • Far-field simulations predict an RCS reduction of 34.96 dB m 2 at 14.25 GHz. Reconciling low absorber loading with thin and broadband electromagnetic wave absorption remains challenging for dielectric-magnetic composites. Here, metal-organic-framework-derived sea-urchin-like CoNi@C composites were developed by coupling composition-controlled morphology evolution with in situ catalytic graphitization. Varying the Co/Ni ratio produced composition-dependent radial architectures and electromagnetic responses, with the optimized CoNi@C featuring high-aspect-ratio one-dimensional spines containing CoNi nanoparticles encapsulated by graphitic carbon. The radial spines favor geometry-induced local electric-field concentration, while the abundant CoNi/carbon interfaces promote interfacial polarization. At 15 wt% filler loading in a paraffin matrix, the optimized CoNi@C composite simultaneously achieved a reflection loss of −57.86 dB and an effective absorption bandwidth of 6.39 GHz (11.61-18.00 GHz) at a single matching thickness of 1.76 mm, covering the entire Ku band. Its strong microwave attenuation arises from the coordinated contributions of interfacial and defect polarization, charge transport, and magnetic dissipation, together with favorable impedance matching. Comparative DFT calculations further revealed composition-dependent interfacial electronic structure and charge redistribution, supporting the formation of a built-in electric field and enhanced interfacial polarization in CoNi/C. Far-field simulations demonstrated a radar cross-section reduction of 34.96 dB m 2 at 14.25 GHz. These results provide a multiscale composite-engineering strategy for low-loading, thin and broadband microwave absorbers. Download: Download high-res image (336KB) Download: Download full-size image
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Zichuan Lu,Shuai Li,Tao Zhong,Ren Zhou,Fuying Wu,Daifen Chen,Wei Kong,Arkadii Proskurin,Liuting Zhang
s The development of heterostructure catalysts with high activity and reusability is of great significance for the green hydrogen production from NaBH 4 . In this paper, a novel CoNi-CoO x nanoparticle with Schottky heterostructure (UCC-30) was synthesized using a high-temperature annealing method. The successful preparation of catalysts with varying contents of CoO was achieved through the precise control of ultrasonication conditions. The experimental results demonstrated that the CoNi-CoO x catalysts exhibited remarkable catalytic performance and were capable of significantly reducing the activation energy for NaBH 4 hydrolysis, with an activation energy of 24.61 ± 0.51 kJ/mol. The hydrogen production rate (HGR) of NaBH 4 + UCC-30 reached 1245 mL min −1 g cat − 1 at 298 K, which was conspicuously higher than that of similar non-precious metal catalysts. Microstructural studies have demonstrated that CoNi-CoO x has a considerable catalytically active area in addition to Schottky moieties, which collectively contribute to the creation of multiple active sites, thereby improving the catalytic efficiency. Moreover, the catalytic capacity of NaBH 4 +UCC-30 remained at 81.9 % after five cycles at 298 K, indicating potential application in practical hydrogen production cases. It is noteworthy that the introduction of the Schottky structure can adjust the catalytic effect of CoNi alloy materials, thereby providing guidance for the future design and fabrication of efficient catalysts for hydrogen production and other energy related research areas.
研究领域:
材料科学
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催化化学
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能源化学
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纳米材料
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可再生能源
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电化学
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表面科学
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高影响因子
危险品化学品经营许可证（带存储）