FOOD CHEMISTRY
·
2024
·
IF 8.5
Xia Niu,Wen-Yuan Pei,Jian-Fang Ma
Herein, a novel FeCoNi(b)-800 ternary metal nanoalloy was uniformly mixed with reduced graphene oxide (RGO) to synthesize the FeCoNi(b)-800@RGO(2:1) composite. The addition of RGO not only stopped the accumulation of FeCoNi(b)-800 alloy, but also heightened the electrocatalytic activity of composite. Particularly, the FeCoNi(b)-800@RGO(2:1) composite displayed the significantly strong electrocatalytic capacity for the reduction of roxarsone (ROX). Furthermore, the FeCoNi(b)-800@RGO(2:1) composite possessed enough porosity and metal catalytic sites, facilitating the transport and electrochemical reduction of the ROX. Thus, the FeCoNi(b)-800@RGO(2:1) composite modified glassy carbon electrode (FeCoNi(b)-800@RGO(2:1)/GCE) showed the superb electrochemical detection effect for ROX with relatively wide working range (0.1–1500 μM) and low detection limit (0.013 μM). Importantly, the FeCoNi(b)-800@RGO(2:1)/GCE sensor could accurately determine the contents of ROX in actual pork, chicken, duck and egg samples, indicating that it had good suitability in food safety monitoring.
研究领域:
材料科学
·
分析化学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
WEAR
·
2025
·
IF 6.1
Zhengquan Jiang,Jiahao Wu,Chuanwei Qiao,Laigui Yu,Jinglei Bi,Yadong Wang,Zhongzheng Yang,Shengmao Zhang,Yujuan Zhang,Weihua Li
Synthetic ester oils are crucial for high-precision equipment lubrication. Strongly polar ester oils competitively adsorb with conventional additives, hindering their effectiveness. This paper proposes the use of FeCoNi nanoparticles as the additive for diisooctyl sebacate (DIOS), a polar synthetic ester oil, attempting to overcome the issue of competitive adsorption faced by traditional additives in polar base oils. Specifically, oleylamine-modified FeCoNi (OA-FeCoNi) nanoparticles were prepared as the additive for DIOS base oil by in situ surface modification technique combined with polyol method, a one-pot liquid-phase chemical method. Friction and wear tests as well as adsorption experiments confirmed the strong adsorption capability of OA-FeCoNi nanoparticles on steel surfaces, demonstrating their effectiveness in enhancing lubrication performance. The present approach, hopefully, would shed light on the facile and well available design and fabrication of efficient anti-wear and friction-reducing agents for polar synthetic ester oils.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Yingying Zhou,Chenyu Zhu,Haonan Du,Jinlei Wu,Chaoqun Yang,Shanshan Xiao,Wen Zheng,Rui Xin,Yikun Yang,Enyuan Zhen,Zhaowen Ren,Hui Xie
Magneto-carbon composites are promising materials for mitigating electromagnetic pollution due to combined dielectric and magnetic loss mechanisms. However, such absorbers often have unsatisfactory wave-absorbing properties due to the difficulty in matching the magnetic permeability with the dielectric properties. The multilayered hollow carbon cubes anchored to a ternary FeCoNi alloy were fabricated using a self-tempered engineering strategy. The multilayer structures are formed in two steps and have an iron cobalt-nickel alloy core encapsulated in a hollow cubic carbon shell. Initially, a phenolic resin (PR)-coated FeCoNi-Prussian blue analogue (PBA) was prepared, followed by high-temperature vacuum pyrolysis. The inner carbon layer, derived from PBA, exhibits high crystallinity, while the outer PR-derived carbon layer is amorphous, preventing agglomeration of the carbonized FeCoNi alloy particles. The amorphous outer layer enables electromagnetic waves to be better absorbed and consumed within the absorber due to its ability to effectively modulate conductivity and impedance matching. By leveraging heterogeneous interface polarization and modulating electrical conductivity through control of graphite crystallinity, a minimum reflection loss (RL min ) of −74.2 dB and an effective absorption bandwidth (EAB) of 5.8 GHz across the 2–18 GHz range were achieved. The study provides an effective approach to broaden the application prospects of advanced magneto-carbon composite absorbers by using a multilayer structure to achieve a balance between magnetic loss and dielectric properties.
研究领域:
材料科学
·
电磁学
·
纳米技术
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2024
·
IF 9.5
Su Jihao,Yang Ling,Yu Dengbin,Dong Shaojun
A significant challenge in developing high-performance hybrid supercapacitors (HSCs) is the need to reasonably construct advanced architectures that consist of various components and exhibit superior electrochemical capacitance performance. The FeCoNi-layered double hydroxide (FeCoNi-LDH) porous material has a specific capacitance of 1960 F·g −1 when used as the anode material at 1 A·g −1 . The FeCoNi-LDH material exhibits nanoplates with a distinct spindle morphology on their surface. Due to the combined action of the three metals and abundant oxygen vacancies, they exhibit unique rate performance and cycle stability. The electronic structure of LDH and the regulation of oxygen vacancy were confirmed by density functional theory (DFT) calculations. This suggests that the strength of hydroxide can reduce the energy required for oxygen vacancy formation in FeCoNi-LDH nanosheets and enhance ion and charge transfer, as well as electrolyte adsorption on the electrode surface. The FeCoNi-LDH//activated carbon (AC) HSC has an energy density of 53.2 Wh·kg −1 at a power density of 800 W·kg −1 , surpassing other devices composed of comparable materials during the same timeframe. This study made significant advances in the design and synthesis of a ternary LDH porous structure with distinct oxygen vacancies, as well as its potential application in electrochemical energy storage.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Guibin Zhang,Lijun Wei,Yueyue Liang,Furu Zhang,Xineng Zhu,Yingge Xu,Fulong Yang,Shenmao Dong,Rui Zhang,Yongqian Shen
With the increase of power density in electronic devices, the electromagnetic (EM) compatibility and heat dissipation problems of electronic devices are becoming increasingly serious. Herein, MOF-derived FeCoNi@carbon (MOF-FeCoNi@C) composites were obtained by a simple one-step carbon thermal reduction of FeCoNi-MOF/polyacrylonitrile (PAN), and then combined with Al 2 O 3 to construct the thermally conductive and microwave absorbing silicone rubber sheets with dual functional characteristics (MOF-FeCoNi@C/Al 2 O 3 /SR). The MOF-confined strategy could achieve controllable growth and uniform distribution of FeCoNi alloy nanoparticles, optimize impedance matching, enhance the EM synergy and EMWs attenuation. Therefore, when the amount of MOF-FeCoNi@C added was 15 wt%, the minimum reflection loss ( RL min ) was -35.4 dB at 13.6 GHz with a thickness of 1.5 mm and an effective bandwidth (EBW) reached 4.1 GHz. Furthermore, the sample exhibits excellent thermal conductivity under the combined action of MOF-FeCoNi@C and Al 2 O 3 . As a consequence, this work utilizes a simple preparation process to develop a new type of absorber and promote its application in rubber sheets, provides a new idea for the research of microwave absorbing materials and has important practical significance.
研究领域:
材料科学
·
电磁学
·
热传导
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Zhe Wang,Jiaming Ang,Bowei Zhang,Youfang Zhang,Xiu Yun Daphne Ma,Tao Yan,Jian Liu,Boyang Che,Yizhong Huang,Xuehong Lu
The rational design and exploration of highly efficient, low-cost, and robust electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is critical for development of rechargeable metal-air batteries. Herein, we report a novel approach for the synthesis of bifunctional electrocatalysts, where Fe 0.5 Co 0.5 and Fe 0.5 Co 0.4 Ni 0.1 alloys are encapsulated in the nitrogen-doped carbon nanotubes-grafted porous polyhedron-derived hybrid fibers (FeCo/FeCoNi@NCNTs-HF). Benefiting from its hierarchically porous structure and strong synergetic coupling among FeCo, FeCoNi alloys, and N-doped carbon species. The obtained electrocatalyst exhibits a positive half-wave potential of 0.850 V for ORR and a low potential of 1.608 V to achieve a current density of 10 mA cm −2 for OER, as well as superior stability in alkaline media. As a demonstration, FeCo/FeCoNi@NCNTs-HF is employed as the electrocatalysts in the air cathode of a Zn-air battery, which shows superior discharge and charge performance, large power density, high specific capacity, and outstanding cycling stability of 240 h (360 cycles). More impressively, excellent cyclabilitiy with a lifetime of 670 h (1005 cycles) is also achieved by the Zn-air battery with FeCo/FeCoNi@NCNTs-HF as the self-supported air electrode. This work will open a novel avenue to develop advanced bifunctional electrocatalysts for the next generation of metal-air batteries.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Muhammad Rizwan Tariq,Jingfan Jiang,Shipeng Wang,Mudasir Ahmad,Idrees Khan,Baoliang Zhang
A sustainable, template-free self-assembly synthesis was used to fabricate biomass-based, highly efficient HPCFs@FeCoNi@NC (HPCFs refer to helical/chiral porous carbon fibers at 700 and 800 °C carbonization temperatures, and NC is accredited to N-doped porous carbon structures) as electromagnetic wave absorbers (EMAs). The synthesis of HPCFs@FeCoNi@NC as an EMA circumvents prerequisite tiresome treatments, laborious work, high energy-intensive chemical fabrication, and precursors (e.g., MOF-74) and other organic binders (PVA, PVB, H4DOT, etc.). The fabricated EMA exhibits top-notch electromagnetic wave (EMW) absorption capabilities with improved reflection loss (RL) across a broad spectrum, achieving efficient absorption bandwidth (EAB, RL ≤ −10 dB), covering 0.90–7.00 GHz over 3.00–18.00 GHz at a 1.00–6.00 mm matching thickness. Noticeably, HPCFs700@FeCoNi@NC2b as an EMA has gained an RL of −86.16 dB over 11.60 GHz, with the EAB covering 9.60–13.80 GHz (4.20 GHz) at a matching thickness of 2.60 mm. Furthermore, HPCFs800@FeCoNi@NC2b achieved an RL of −86.28 dB with an EAB of 2.20 GHz (covering 8.70–10.90 GHz) at a 2.44 mm matching thickness and 9.60 GHz. The EMA’s improved RL over a broad-spectrum EAB is accredited to its unique structural morphology, better dissipation/attenuation mechanisms of EMW, additional loss mechanisms, and so on. Likewise, the EMA’s ability to dissipate/attenuate EMW across low and high frequencies (3.00–18.00 GHz) makes it a novel contender for futuristic applications.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Wenju Xie,Eryong Wang,Qinghua Sun,Zhiyong Ouyang,Tingfang Tian,Jie Zhao,Yanhe Xiao,Shuijin Lei,Baochang Cheng
N -regulated three-dimensional (3D) turf-like carbon material loaded with FeCoNi nanoalloys (F-CNS-CNT), composed of carbon nanotubes (CNT) grown in situ on carbon nanosheets(CNS), was synthesized using a low-temperature solution combustion method and organic compounds rich in pyridinic-N. This distinct structure significantly expands the effective electrochemical surface area, revealing an abundance of active sites and enhancing the mass transfer capability for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Both experimental observations and theoretical calculations corroborate that the synergy between the FeCoNi nanoalloy and the highly pyridinic N -doped carbon substrate optimizes the adsorption and desorption-free energy of oxygen intermediates, resulting in a remarkable improvement of intrinsic ORR/OER activity. Therefore, the derived F-CNS-CNT electrocatalyst can present a favorable half-wave potential of 0.85 V (ORR) and a lower overpotential of 260 mV (corresponding to a current density of 10 mA cm −2 , OER) in alkaline media. Moreover, when employed in the air cathode of a flowable zinc-air battery, the electrocatalyst exhibits exceptional discharge and charge performance, including a high power density of 144.6 mW cm −2 , a high specific capacity of 801 mAh g −1 , and an impressive cycling stability of 600 cycles at a current density of 10 mA cm −2 . Notably, these results markedly surpass those of the commercial catalyst Pt/C + IrO 2 .
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 46
·17447-17459
·
IF 8.307
Wenhao Tang,Jialin He,Kewei Teng,Lei Gao,Ruiyu Qi,Yirui Deng,Ruiping Liu,Ang Li,Huadong Fu,Chang-an Wang
3d Transition-metal nitrogen–carbon nanocomposites (T–N–C, T = Fe, Co, Ni, etc.) with highly active M–Nx sites have received much attention in the field of rechargeable zinc–air battery research. However, how to rationally dope metallic elements to decorate T–N–C catalysts and enhance their electrocatalytic performances remains unclear. Herein, we demonstrated that cobalt-doped Fe-rich catalysts are effective in improving ORR performances by density functional theory (DFT) calculations. On this basis, we reported a kind of novel bifunctional electrocatalyst of hollow nitrogen-doped carbon tubes with coexisting M–N–C single atoms and alloy nanoparticles (denoted FexCoyNiz@hNCTs). Benefiting from the synergistic effect between different components, the as-prepared Fe4Co1Ni2@hNCT catalyst exhibited a small overpotential difference of 0.75 V between an OER potential at 10 mA cm−2 and an ORR half-wave potential, as well as an excellent zinc–air battery performance, when serving as the air cathode. This work provided a scalable design concept for multi-metal doping toward high-performance T–N–C electrocatalysts.
研究领域:
电化学
·
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
CARBON
·
2025
·
IF 11.6
Haotian Jiang,Yanxiang Wang,Chengjuan Wang,Yingfan Li,Shichao Dai,Bohan Ding,Jinghe Guo,Yanru Yuan,Dongming Liu,Hui Li
To develop multi-functional microwave-absorbing materials, the FeCoNi/MoS 2 @carbon nanotubes (CNTs)/carbon nanofibers (CNFs) aerogels were synthesized by anchoring FeCoNi and MoS 2 onto an aerogel skeleton via directional freeze-drying and catalytic chemical vapor deposition (CCVD). Through CCVD, a diverse array of heterointerfaces was successfully constructed and defect-containing CNTs were introduced, thereby improving the impedance mismatch of carbon-based aerogels while achieving outstanding microwave absorption performance. The composite aerogel results in a minimum reflection loss of −84.18 dB at the thickness of 1.85 mm and an effective absorption bandwidth of 5.40 GHz at the thickness of 1.75 mm with a 13 % filler ratio. The excellent electromagnetic wave absorbing ability is mainly ascribed to the formation of three-dimensional conduction network, abundant heterogeneous interfaces, and the introduction of magnetic loss. Density functional theory calculations further elucidate that the enhanced dielectric properties arise from asymmetric charge distribution at heterogeneous interfaces (FeCoNi–C and MoS 2 –C), which amplifies interfacial polarization, while the increased density of states optimizes conduction loss. Additionally, the composite aerogels exhibit exceptional thermal insulation and infrared stealth performance. This work pioneers a novel pathway method for multifunctional aerogels using CCVD.
研究领域:
材料科学
·
纳米复合材料
·
功能材料
·
电磁学
·
热物理学
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2020
·Vol. 12
·期 17
·4339-4345
·
IF 4.853
Yuanxin Du,Xin Ding,Meng Han,Manzhou Zhu
Graphical Transition-metal phosphides : A series of ternary FeCoNi-PBAs (from truncated octahedrons to cubic octahedrons and truncated cubes) were obtained by temperature control surfactant desorption ability. The derived FeCoNi−Ps showed better OER activity than RuO 2 , especially FCN-40-P exhibited optimal performance because its appropriate composition promotes OH − adsorption, as confirmed by XPS analyses. Prussian blue analogues (PBAs) are mostly binary metallic compounds with a cubic structure, which greatly limits the structure and component of derived transition-metal phosphides (TMPs) and affects their catalytic activities. This work focuses on regulating the morphology and composition of the PBA at the front-end to optimize the OER performance of the derived TMP. By temperature control surfactant desorption ability, we obtain a series of ternary FeCoNi (FCN-PBAs). With the increase of temperature, their morphologies change from truncated octahedrons to cubic octahedrons and truncated cubes, in which the Fe content basically remains unchanged and the Co/Ni ratio gradually decreased. Due to the synergistic effect among ternary TMPs, all phosphidation products (FCN-P) exhibit better OER activities than RuO 2 , among which FCN-40-P shows the best performance. As confirmed by XPS analyses, the appropriate chemical composition enhances the oxidizabilityof TM species, promotes the chemical adsorption of OH − , and accelerates OER kinetics.
研究领域:
催化
·
材料科学
·
电化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Xuan Liu,Zi-yu Zheng,Xuan Wang,Hao-rui Gao,Jia-qian Niu,Shi-qi Li,Yue-qin Duan,Xue-wei Wang
Improvement of catalyst dispersion is an effective strategy for performance enhancement of electrocatalytic oxygen evolution reaction (OER), while the heterogeneous structure can also regulate the electronic structure of the catalyst interface. In this paper, Cu 2 S nanorods were synthesized in situ on copper foam (CF) by alkaline etching and sulfidation, Subsequently, FeCoNi LDH nanosheets were electrodeposited on Cu 2 S nanorods to construct FeCoNi LDH/Cu 2 S heterojunctions. The electrochemical results demonstrate that FeCoNi LDH/Cu 2 S/CF exhibits high efficiency as an alkaline OER electrocatalyst with an overpotential of 211 mV at a current density of 100 mA cm −2 . Furthermore, FeCoNi LDH/Cu 2 S/CF can operate for 30 h and shows good cycling stability. The XPS results indicate that the electrons are transferred from FeCoNi LDH to Cu 2 S. The formation of the FeCoNi LDH/Cu 2 S heterojunction optimizes the interface at the heterojunction, thereby accelerating the electron transfer and optimizing the electronic structure at the interface. The uniform dispersion of FeCoNi LDH provides a high density of active sites and improves the mass transfer ability, thus enhancing the catalytic performance. This experimental strategy presents a generalized approach to improve the efficient electrochemical reaction of layered double hydroxides.
研究领域:
电催化
·
材料科学
·
能量存储与转换
·
纳米材料
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）