JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Liangqi Zhang,Rui Bao,Jianhong Yi,Shengda Guo,Jingmei Tao,Caiju Li,Dong Fang,Yichun Liu,Fengxian Li
As a hybrid reinforcement, interconnected architecture of carbon nanotubes (CNT)/Tungsten (W) composite powder was designed and fabricated by spraying pyrolysis (SP) method. Subsequently, CNT-W/copper (Cu) composites were fabricated successfully by low energy ball milling (LEBM) and spark plasma sintering (SPS). The electronic conductivity , mechanical properties, micro-morphology and interface microstructure of CNT-W/Cu composites were evaluated and characterized. The results revealed that CNT with attached W were dispersed uniformly in the Cu matrix and W particles played a “pinning” role of the CNT. The 0.6 wt%CNT-W sample exhibited ultimate tensile strength 226 MPa and the elongation 33%, which were 14% and 83% higher than that of pure Cu, respectively. Besides, the 0.8 wt% CNT-W sample exhibited electrical conductivity 92.3%IACS, which is very close to that of Cu matrix (92.6%IACS). Finally, the strengthening and electric conductivity mechanisms of CNT-W in Cu matrix were considered. This study inspires a new way of synergistically reinforced metal matrix composites .
研究领域:
材料科学
·
纳米技术
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DOI
高影响因子
Frontiers in Chemistry
·
2020
·
IF 3.693
Yuan Xiuhua,Sun Xia,Zhou Huawei,Zeng Suyuan,Liu Bingxin,Li Xia,Liu Dong
While bismuth vanadate (BiVO4) has emerged as a promising photoanode in solar water splitting, it still suffers from poor electron-hole separation and electron transport properties. Therefore, the development of BiVO4 nanomaterials that enable performing high charge transfer rate at the interface and lowering charge recombination is urgent needed. Herein, cobalt borate (Co-B) nanoparticle arrays anchored on electrospun W-doped BiVO4 porous nanotubes (BiV0.97W0.03O4) was prepared for photoelectrochemical (PEC) water oxidation. One-dimensional, free-standing and porousBiV0.97W0.03O4/Co-B nanotubes was synthesized through electrospun and electrodeposition process. BiV0.97W0.03O4/Co-B arrays exhibit a unique self-supporting core-shell structure with rough porous surface, providing abundant conductive cofactor (W) and electrochemically active sites (Co) exposed to the electrolyte. When applied to PEC water oxidation. BiV0.97W0.03O4/Co-B modified FTO electrode displays high incident photon-to-current conversion efficiency (IPCE) of 33% at 405 nm (at 1.23 V vs. RHE) and its photocurrent density is about 4 times to the pristine nanotube. The higher PEC water oxidation properties of BiV0.97W0.03O4/Co-B porous nanotubes may be attributed to the effectively suppress the electron-hole recombination at electrolyte interface due to its self-supporting core-shell structure, the high electrocatalytic activity of Co and the good electrical conductivity of BiV0.97W0.03O4 arrays. This work offers a simple preparation strategy for the integrated Co-B nanoparticle with BiV0.97W0.03O4 nanotube, demonstrating the synergistic effect of co-catalysts for PEC water oxidation.
研究领域:
材料科学
·
能源科学
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DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Yanli Deng,Lutong Li,Long Wang,Na Wu,Huihui Jin,Feng Gao,Zhihui Zeng
W-type ferrites possessing low cost and high chemical stability, show high potential in electromagnetic wave (EMW) absorption field. However, due to the low dielectric loss, developing high EMW absorption performance of W-type ferrites remains desired. Here, rare earth (RE) cerium (Ce)-doped W-type barium ferrites (Ba 1-y Ce y Ni 2 Fe 15.4 O 27 , y=0.1, 0.2, 0.3, 0.4, 0.5, 0.6) are prepared by a sol-gel approach. The influences of Ce doping are detailed analyzed. Ce ions with unpaired 4f electrons and strong spin-orbit coupling of angular momentum enhance the dielectric and magnetic properties of ferrites. Ba 0.7 Ce 0.3 Ni 2 Fe 15.4 O 27 achieves the minimum reflection loss (RL min ) value of -52 dB while Ba 0.6 Ce 0.4 Ni 2 Fe 15.4 O 27 showcases the widest effective absorption bandwidth (EAB) of 1.36 GHz associated with the RL min reaching -38 dB, significantly outperforming the undoped ferrites. This work thus demonstrates a high-efficiency utilization of Ce for enhancing the EMW absorption performance of widely employed W-type barium ferrites, efficiently advancing the application field of RE elements.
研究领域:
材料科学
·
电磁学
·
化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Liying Huang,Di Zhang,Nitong Bu,Yuanbo Zhong,Pingping Tan,Huanglong Lin,Jie Pang,Ruojun Mu
In this work, pullulan (PUL) nanofibrous films incorporated with water-in-oil emulsions (PE) were prepared by microfluidic blowing spinning (MBS). The microstructures of nanofibers were characterized by scanning electron microscopy (SEM), fourier transform infrared (FT-IR), and X-ray diffraction (XRD). With the addition of W/O emulsions, the thermal stability, mechanical, and water barrier properties of PUL nanofibers were improved. Increases in emulsion content significantly affected the antioxidant and antimicrobial properties of nanofibrous films. ABTS and DPPH free radical scavenging rates increased from 10.26 % and 8.57 % to 60.66 % and 57.54 %, respectively. The inhibition zone of PE nanofibers against E. coli and S. aureus increased from 11.00 to 20.00 and from 15.67 to 21.17 mm, respectively. In addition, we investigated the freshness effectiveness of PE nanofibrous films on fresh-cut apples. PE nanofibrous films significantly maintained the firmness, and reduced the weight loss and browning index of the fresh-cut apple, throughout the 4 days of storage. Thus, the PE nanofibrous films exhibited good potential to prolong the shelf life of fresh-cut fruit and promote the development of active food packaging.
研究领域:
食品科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Russian Journal of Physical Chemistry A
·
2026
·Vol. 100
·期 2
·262-268
·
IF 0.7
Ying Lin,Gao Teng,Huang Guobin,Liu Mengli,Cao Qinyu,Zhuang Naifeng,Chen Wenjie
A series of Sm 3+ -doped CaGdAlO 4 (CGA) phosphors were successfully synthesized via a high-temperature solid-state method. The crystal structure and luminescent properties of the samples were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and fluorescence spectrometry, with Rietveld refinement confirming a tetragonal crystal structure (consistent with observed XRD patterns).The CGA:0.02Sm 3+ phosphor can be efficiently excited by blue-violet light (408 nm), emitting intense orange-red luminescence. The optimal Sm 3+ doping concentration is 2 mol % (maximum luminous intensity), and the concentration quenching mechanism is attributed to dipole-dipole interactions. The optimal sample exhibits excellent thermal stability in the range of 298–523 K, with an activation energy of 0.11 eV. When used as a red component in white LED (w-LED) devices, CGA:0.02Sm 3+ delivers outstanding performance: a high color rendering index (Ra = 91.2) and CIE chromaticity coordinates of (0.3148, 0.3488), indicating its potential as an orange-red phosphor for lighting and display applications. Additionally, first-principles calculations based on density-functional theory (DFT) were performed to investigate the electronic structures and density of states of pure CGA and Sm 3+ -doped CGA.
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 47
·期 3
·118901
·
IF 6.3
Zipeng Huang,Lili Gan,Lihua Qiao,Yanru Wu,Chenru Hao,Li Cheng,Ziqiang Chi
Microwave dielectric ceramics for next-generation communication systems require a high relative permittivity (
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Rui Zhang,Xu Liu,Huimin Mao,Zhenyu Xiao,Jingqi Chi,Xiaobin Liu,Lei Wang
Electrochemical upcycling of waste PET into value-added formate • Soybean root-inspired design of symbiotic active sites • Oxygen-bridge-induced 3d-5d orbital hybridization The efficient transformation of waste poly(ethylene terephthalate) (PET) into high-value chemicals represents a pivotal strategy toward a circular plastics economy. Drawing inspiration from the cooperative nitrogen-fixation relationship between rhizobia and leguminous plants, we report a tungsten-modified nickel phosphide (W-Ni 2 P) catalyst for the selective electrooxidation of PET-derived ethylene glycol (EG) into formic acid (FA). Upon electrochemical activation, robust asymmetric W-O-Ni oxygen-bridged configurations are formed in situ, establishing cooperative catalytic centers in which W operates as an electronic modulator while Ni serves as the dominant active site. The tungsten centers display strong adsorption toward *EG and *OH intermediates, functioning as dynamic buffering sites that regulate the interfacial microenvironment and concurrently facilitate the reconstruction of Ni into highly active oxyhydroxide species. This synergistic interplay, governed by W-O-Ni-mediated 3d-5d orbital interactions, effectively reduces the kinetic barriers associated with C-H dehydrogenation and C-C bond cleavage. Consequently, the optimized W-Ni 2 P catalyst achieves a current density of 500 mA cm -2 at 1.45 V versus RHE, delivering a Faradaic efficiency of 98.9% for FA production. Moreover, an anion-exchange-membrane electrolyzer sustains stable operation for over 200 hours in authentic PET hydrolysate, highlighting the system’s practical durability, scalability, and economic potential for plastic waste upcycling. Download: Download high-res image (212KB) Download: Download full-size image Inspired by rhizobium-legume symbiosis, W was incorporated into Ni 2 P to form cooperative W-O-Ni active sites, which facilitate Ni reconstruction, optimize intermediate adsorption, lower EGOR energy barriers, and promote highly efficient formic acid production from PET waste.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
·
2026
·
IF 4.7
Chenhao Zhao,Shihuai Yang,Sen Su,Lili Xiao,Yonggang Guo,Yi Sun,Kejia Kang
Tungsten (W), as a typical refractory metal, had been widely applied in the aerospace, nuclear industry and other extreme working conditions. Particle-reinforced W-based composites, such as W-SiC composites, exhibit higher hardness and superior wear resistance. Additionally, surface texturing can alter the contact state of friction interfaces, thereby reducing friction and wear. This study investigated the texturing of W-SiC composites via through-mask electrochemical machining (TMECM) and evaluated their tribological behavior. TMECM enables the fabrication of large-scale micro-dimple arrays with spacings ranging from 1.5 to 3 mm. These micro-dimples have an average diameter of 763–796 μm and an average depth of 31–88 μm. Increasing the spacing leads to larger dimensions due to a more intensive electrical field. Some micro-dimples feature an uneven bottom due to the Si enrichment in local regions. Compared to the raw sample, the textured W-SiC samples exhibit a lower average friction coefficient (AFC). Under both dry sliding friction and oil lubrication conditions, denser texture arrays with a 1.5 mm spacing reduce the AFC and wear volume. Under dry sliding friction, the texture arrays could trap the abrasive particles and mitigate the interface wear caused by particle rolling. Under oil lubrication, the textures act as reservoirs to release the lubricant and enhance the hydrodynamic effect to support the friction pair with a greater hydrodynamic force. Thus, surface texturing endows W-SiC composites with improved wear resistance and friction reduction.
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DOI
高影响因子
RENEWABLE ENERGY
·
2026
·
IF 9.1
Jiamin Yan,Penglei Li,Yang Liu,Runze Shi,Xuan Jin,Zhen Lu,Haifeng Wu,Gongxun Bai,Peng Xue,Jinxin Guo
Thermochromic smart windows based on vanadium dioxide (VO 2 ) offer a promising passive approach for reducing building solar heat gain by selectively modulating near-infrared radiation. However, their large-scale application is limited by complex fabrication processes and nanoparticle agglomeration. Herein, a scalable room-temperature ultraviolet (UV) photocuring strategy is developed to fabricate W–VO 2 thermochromic films. By introducing an A-DCP monomer, rapid UV-induced polymerization forms a dense three-dimensional crosslinked network within seconds, enabling effective in-situ confinement and suppressing nanoparticle migration and aggregation. Structural and spectral analyses confirm the preserved VO 2 (M) phase and improved microstructural uniformity. At the optimal W–VO 2 content of 1.0 wt%, this film achieved a high ΔT sol of 15.04% while maintaining a T lum of approximately 35%, and exhibited excellent color stability during the thermochromic conversion process. Furthermore, an application-oriented multi-scale evaluation framework is established to correlate microstructure, optical modulation, visual perception, and building-scale energy performance. Scaled building-model experiments under 680 W m −2 irradiation show a steady-state indoor temperature reduction of 7.03 °C compared with clear glass. EnergyPlus simulations across nine climate zones demonstrate significant annual energy-saving potential, reaching 24.13% in Vancouver and 23.59% in Riyadh.
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DOI
高影响因子
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
·
2025
·
IF 3.4
Wei Wang,Ming Yin,Qichao Wu
Nickel-based coatings are known for their exceptional properties and high microhardness, making them widely used to enhance the surface performance of metal components. In order to investigate the effect of pulse current densities ( I D ) on the performance and structure of the coatings, the Ni/W–TiN coatings were prefabricated on a 45 steel substrate by using a pulse electrodeposition (PED) approach. The study examines how varying pulse current densities ( I D ) impact the coatings' microstructure, microhardness, phase composition, and wear/corrosion resistance. Among the coatings tested, the one deposited at an I D value equal to 0.5 A/dm 2 revealed the best structure, with average sizes of 66.4 nm for Ni–W grains and 39.3 nm for TiN nanoparticles. XRD patterns revealed characteristic peaks at 43.8°, 50.5°, and 74.2°, corresponding to the (1 1 1), (2 0 0), and (2 2 0) planar directions of Ni–W. The value of pulse I D significantly influenced the microhardness value of the coatings. The sample deposited at 0.1 A/dm 2 showed a microhardness of approximately 675.4 HV, while the coating formed at 0.5 A/dm 2 showed the highest microhardness at around 834.9 HV. Moreover, Ni/W–TiN coating deposited at 0.5 A/dm 2 showed the lowest corrosion value equal to 0.71 A/cm 2 .
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产品关联
DOI
高影响因子
Defence Technology
·
2020
·Vol. 17
·期 2
·467-477
·
IF 2.637
Lu-yao Wang,Jian-wei Jiang,Mei Li,Jian-bing Men,Shu-you Wang
Projectiles made of reactive structure materials (RSM) can damage the target with not only kinetic but also chemical energy, but the enhanced damage potential of RSM may become compromised if extreme loading condition disintegrates the projectile before the target is reached. In this work, a ductile coating of Ni was introduced to a tungsten-zirconium (W-Zr) alloy, a typical brittle RSM, to preserve the damage potential of the projectile. Detonation driving tests were carried out with X-ray photography and gunpowder deflagration driving tests were carried out with high-speed photography for the coated and uncoated RSM samples, respectively. The craters on the witness target were analyzed by scanning electron microscopy and X-ray diffraction. The Ni coating was found to effectively preserve the damage potential of the W-Zr alloy under extreme loading conditions, whereas the uncoated sample fractured and ignited before impacting the target in both detonation and deflagration driving. The crack propagation between the reactively brittle core and the ductile coating was analyzed based on the crack arrest theory to mechanistically demonstrate how the coating improves the structural integrity and preserves the damage potential of the projectile. Specifically, the Ni coating envelops the W-Zr core until the coated sphere penetrates the target, and the coating is then eroded and worn to release the reactive core for the projectile to damage the target more intensively.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
·
2019
·
IF 2.794
Jian Zhang,Ye Tian,Jiawen Zhu,Yi Sun,Guoqiang Luo,Qiang Shen,Lianmeng Zhang
In this study, the W-HfC-Zr composites with various Zr content were fabricated via plasma activated sintering. The relative density, microstructure, microhardness , as well as mechanical properties of these composites were investigated. The W-HfC-Zr composite with 1.0 wt% Zr content had high relative density of 97.56%, exhibited the higher microhardness of 614 Hv, compressive yield strength of 1.85 GPa and bending strength of 880 MPa, which attributing to Zr captured impurity oxygen and generated solid-solution oxide (Hf, Zr)O. The enhancement mechanisms of trace Zr addition on microstructure and mechanical properties were proposed.
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DOI
高影响因子
危险品化学品经营许可证（带存储）