Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Yuan Bao,Weijia Pu,Yiwei Zhang,Yahui Xiao,Yong Liu
Ni-Co nano-alloys confined by in-situ formed N-doped porous carbon overlayer have been prepared through chelation of metal cations with citric acid and urea followed by carbonization for hydrodeoxygenation of 5-hydroxymethylfurfural (HMF) into 2, 5-dimethylfuran (DMF). The results indicated that the Ni-Co nano-alloys were formed and homogeneously distributed within the N-doped porous carbon overlayer. The electronic effect of the Ni-Co nano-alloys significantly boosted hydrodeoxygenation activity of the Co 2 Ni 1 @NC catalyst and simultaneously inhibited further hydrogenation and opening of furan ring. The N-doped porous carbon overlayer around Ni-Co nano-alloys not only facilitated to disperse and stable Ni-Co nano-alloys through strong metal-support interaction, but also protected the Ni-Co nano-alloys from aggregation. Therefore, the Co 2 Ni 1 @NC catalyst offered superior catalytic performance with the HMF conversion of 100 % and DMF selectivity of 93.0 %. Moreover, the Co 2 Ni 1 @NC catalyst displayed excellent stability without significant activity loss after five recycles due to the spatial confinement of N-doped carbon overlayer.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Wenqian Zhang,Shengming Zhang,Minghao He,Weixian Hu,Wenhao Han,Kangkang Zha,Qian Feng,Guohui Liu,Yanli Zhao,Bobin Mi
Postmenopausal bone loss due to estrogen deficiency necessitates effective therapeutic strategies. Our study explores targeting macrophage Aurora A kinase to mitigate bone loss. Aurora A kinase phosphorylation is observed being increased in bone marrow-derived macrophages (BMDMs) from ovariectomy (OVX) mice, along with a reduction in programmed death-ligand 1 (PD-L1) expression. Detailed analysis reveals that PD-L1 plays an immunomodulatory role by lowering the ratio of T helper 17 cells and regulatory T cells. The metabolic shift toward glycolysis through transcriptome sequencing, induced by Aurora A kinase inhibition, is essential for PD-L1 expression in BMDMs. The interaction between Aurora A kinase and cytochrome C oxidase subunit 5B is found to enhance PD-L1 expression. To apply these findings therapeutically, a multifunctional system is developed using a Nickel-metal organic framework combined with bisphosphonate and MLN8237 (BP@Ni-MOF/MLN8237). This system targets bone tissues through bisphosphonate and effectively delivers MLN8237 to macrophages, promoting PD-L1 expression for a favorable immune environment. Moreover, this system exhibits an obvious angiogenic effect. The present study highlights the crucial roles of macrophage Aurora A kinase and PD-L1 in maintaining bone homeostasis as well as the angiogenesis effect by Ni-MOF engineered system, presenting a promising therapeutic approach to prevent postmenopausal bone loss.
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高影响因子
FUEL
·
2025
·
IF 7.5
Jie Wang,Quanxing Zheng,Hongliang Lu,Jianqiang Fan,Xiaohua Deng,Wenjing Song,Pengfei Ma,Weikun Lai
Selective aqueous hydrogenolysis of cellulose to valuable ketones and alcohols is attractive for biomass utilization. This work developed a TiO 2 layer coated MoO 3 nanorod supported Ni catalyst for the hydrogenolysis of cellulose to ketones and alcohols, which achieved a maximum hexacarbon keto-alcohols yield of 71.2 % with a complete cellulose conversion at 220 °C and 3 MPa H 2 . The interaction of Ni and TiO 2 -MoO 3 oxides provided effective channels for hydrogen transfer, thereby boosting the reduction of MoO 3 to form MoO 2 species. More Lewis acid sites were created which facilitated the isomerization of glucose and retro -aldol condensation of fructose. The cleavage of C O bonds in hydroxyl-containing intermediates thus promoted their selective hydrogenolysis to form ketones and alcohols. Particularly, Ni TiO 2 /MoO 3 catalyst demonstrated excellent reusability due to the protective coating of TiO 2 layer and could be widely used in selective hydrogenolysis of various oxygen containing compounds.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xinci Zhang,Mingming Wang,Li Chang,Chunjie Yu,Xiaoxuan Fan,Maosheng Cao,Lin Li
To ensure the effective operation of equipment in dynamic electromagnetic environments, the development of intelligent electromagnetic protection materials is crucial. However, inherent contradictions often exist between electromagnetic response technologies across different frequency bands and electronic sensing technologies, making the compatibility of multiple technologies a persistent challenge. Inspired by the structure and function of kelp, this study successfully develops a two-dimensional nanocarbon ribbon superstructure embedded with nickel nanoparticles (2D Ni@NCRS) through the one-step pyrolysis of bulk Ni-MOFs, effectively addresses the aforementioned contradictions. This biomimetic kelp-like structure features interconnected nanocages and a porous architecture, significantly enhances the electromagnetic wave (EMW) attenuation capability and impedance matching characteristics of the materials, thereby achieves exceptional EMW absorption performance. Furthermore, the functional film based on 2D Ni@NCRS fully leverages the conductive network, thermal insulation properties, and ultraviolet absorption characteristics of the materials, simultaneously enables multifunctional capabilities such as gigahertz-infrared-compatible stealth, ultraviolet protection, and flexible strain sensing. This innovative design integrates electromagnetic stealth protection, environmental camouflage, and sensing into a unified system, enables multifunctional synergies and enhances the potential for integrated material applications in complex environments.
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高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Rong Shang,Hao Zhang,Yulong Li,Bang Gu,Qinghu Tang,Feng Qiu,Qiu-E Cao,Wenhao Fang
The synthesis of primary amines from renewable biobased carbonyl compounds via reductive amination has received much attention. Modifying the surface structure of a heterogeneous catalyst may offer prospects to address selectivity maneuvering in this complex amination process. In this work, a metal–organic framework (MOF)-derived carbon-coated strategy was adopted to prepare the Ni@C catalysts with different thicknesses of carbon shells. This type of Ni catalyst achieved 98% yield of (5-(aminomethyl)furan-2-yl)methanol (AMF) at 100 °C under 2 bar of H2 from reductive amination of 5-hydroxymethylfurfural (HMF, an important cellulose-derived platform molecule) with NH3·H2O. In comparison, a Ni-NiO catalyst obtained by reducing NiO with H2 would mainly overhydrogenate AMF to (5-(aminomethyl)tetrahydrofuran-2-yl)methanol (THAMF, 52% in yield) as a byproduct. The modification of the electronic structure of Ni0 active sites with a carbon shell was elucidated, demonstrating electron-rich Ni0 sites for H2 activation. Moreover, different HMF adsorption modes on Ni-NiO and Ni@C surfaces were illustrated, significantly affecting the product distribution. Subsequently, distinctive NH3·H2O activation processes were proposed for both Ni catalysts to understand selective conversion of the Schiff base (i.e., the critical reaction intermediate). The developed Ni@C catalyst with suitable carbon thickness, abundant Ni0 centers, and defective carbon species showed high AMF yield under mild reaction conditions, facile separation–regeneration, and satisfying reusability. In addition, this Ni catalyst can also provide a relatively good substrate scope toward bioamine synthesis via reductive amination.
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高影响因子
JOM
·
2024
·
IF 2.1
Yu Yu,Li Ying,Zhong Yiwei,Wang Mingyong,Guo Zhancheng
Fe-Ni-Co alloy films demonstrate outstanding soft magnetic properties and are widely used as magnetic materials. The ultrasonic-assisted electrodeposition method is highly regarded for its merits in improving alloy film performance. In this study, Fe-Ni-Co alloy film with a uniform composition was fabricated through ultrasonic-assisted electrodeposition. The effects of the electrodeposition parameters on the composition and microstructure of the Fe-Ni-Co alloy films were studied. The results revealed that lower initial electrolyte pH, temperature ( T ), and ultrasonic power ( P ) were conducive to the increase of the iron content of the alloy films. As the ultrasonic power increased, the crystal structure of the Fe-Co-Ni films changed from bcc (FeCo) to fcc (NiFe), and the mean grain size decreased. When the electrodeposited condition was pH = 2, T = 50°C, and P = 45 W, the Fe 58.36 Ni 36.01 Co 5.63 alloy film showed a better corrosion resistance than 304 stainless steels. When the electrodeposited condition was pH = 2, T = 50°C, and P = 90 W, the Fe 53.84 Ni 41.66 Co 4.48 alloy film exhibited good magnetic properties, and the saturation magnetic induction and coercivity were 1.75 T and 85 A/m, respectively, which was much better than Fe-Co-Ni alloy films (Ni: about 40 wt.%) prepared by traditional electrodeposition.
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高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
·Vol. 38
·期 3
·e7354
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IF 3.7
Maiyong Zhu,Qiao Luo,Congcong Lu,Lingran Liu
Hierarchical core–shell structure is benefit for the fast diffusion and bulk storage of electron/ion while metal nitrides (MN) exhibit metal-like behavior with excellent conductivity. Herein, nickel cobalt glycerate solid spheres (NiCo-G) and nickel cobalt glycerate yolk–shell structure (NiCo-GYS) were successfully synthesized via solvothermal reactions, accompanied by annealing using urea as a cheap and convenient nitrogen source to obtain metal nitride/bimetallic oxide core–shell heterostructure (NiCoNO). Excellent specific capacitance of 1878 F g −1 at 1 A g −1 is displayed by the prepared NiCoNO. Amazingly, the distinct core–shell construction guarantees high stability during the charge/discharge operation. NiCoNO maintains an 83.9% specific capacitance after 5000 cycles at 10 A g −1 . Furthermore, the all-solid-state hybrid supercapacitor was assembled using NiCoNO cathode and active carbon (AC) anode components. The device has an excellent capacitive retention rate of 81.1% after 5000 cycles at 10 A g −1 and a good energy density of 64.2 Wh kg −1 at a power density of 900 Wh kg −1 . A light-emitting diode (LED) bulb can be lighted for 3 min, indicating the promising practical application prospect of the supercapacitor.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Yuanyuan Liu,Yong Yan,Xiujie Wang,Zhi Yang,Xinhua Li
To enhance the performances of energy storage and conversion devices, understanding their charge-storage mechanisms is essential. Research on energy-storage mechanisms for addressing the problem of low energy density in supercapacitors is lacking, which hinders their widespread adoption. This study introduces a novel high-density two-dimensional layered coordination polymer (CP) electrode material (i.e., [Ni(II) 6 Ni(II) 2 Li 3 (mba 2− ) 6 (S 2− ) 2 (OH − ) 3 ] n (Ni-mba-Li; H 2 mba = 2-mercaptobenzoic acid)) for use in aqueous hybrid capacitors. This electrode exhibits battery-type electrode behavior with a high volumetric capacity. Moreover, the asymmetric device achieves a high volumetric energy density and demonstrates outstanding capacitance retention and Coulombic efficiency over 13,000 charge/discharge cycles. A range of analytical techniques is used to explore the energy-storage mechanism of the CP at the molecular level. Electrochemical studies reveal that in KOH solution, Ni-mba-Li decomposes into Ni(OH) 2 and the corresponding ligands. However, under an electric field, these decomposition reactions are converted into reversible redox reactions, enabling rapid charge storage. Moreover, the electric field triggers new irreversible reactions, and effectively controlling these processes is key to enhancing the performance and lifespan of the electrode material. This study highlights the potential of rational molecular design to develop advanced electrode materials for energy-storage applications.
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Materials
·
2025
·Vol. 18
·期 7
·1460
·
IF 3.2
Jiajia Cui,Yueyue Sun,Chaofan Yin,Hao Wang,Zhengrong Liu,Zilin Zhou,Kai Wu,Jun Zhou
The development of symmetrical solid oxide fuel cells with identical cathode and anode is beneficial for thermal matching and reducing the cost. Herein, proton-conducting electrolyte and novel high catalytic activity electrode material for symmetrical solid oxide fuel cells are proposed. Ni-doping at the B-site of (Sr0.8Ce0.2)0.95FeO3−δ(SCF) indicates reduced cell edge lengths, cell volume, and a more porous honeycomb structure. The B-site elements in oxide tend to have a high oxidation state via Ni-doping. Simple doping modification in SCF causes better thermal matching between the electrode and electrolyte and form more oxygen vacancies at the operating temperature. At the anode side, Ni-doping improves the stability of the symmetric electrode in reducing the atmosphere. The polarization resistance of symmetrical cells for new electrode material is half of the original both in oxidation and reduction atmosphere, which indicates boosted electrochemical performance for the cathode and anode. At the same time, Ni-doping reduces the impedance activation energy of the anode reaction in symmetric cells. The output performance of the cell is 210.4 mW·cm−2at 750 °C and the thickness of the electrolyte is 400 μm, achieving a highly efficient symmetrical electrode in proton ceramic fuel cells. The new finding of materials provides a novel high efficiency symmetrical electrode and proposes guidance for the improvement of solid oxide fuel cells at a reduced temperature.
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PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Jiayu Lin,Yongbo Hou,Lailong Ding,Yifan Wang,Jinhu Hu,Peisong Dong,Qin Wang,Mingliang Ma
Polyurea (PUA) is widely used as a coating in construction, tunnels, bridges, and other fields because of its excellent performance. However, its combustion emits toxic gases and smoke, hindering escape and posing potential fatality risks. Enhancing the flame retardancy of PUA is crucial for safety and expanding its applications. The synthesis of two-dimensional FePP nanosheets was reported in this paper, employing the solvothermal method, followed by the sequential growth of MoS 2 and Ni-MOF to establish a multilayer composite structure. The elemental composition and morphology of the synthesized FePP@MoS 2 @Ni-MOF flame retardants were characterized and analyzed. The flame retardant properties of polyurea composites with varying amounts of FePP@MoS 2 @Ni-MOF were investigated using Cone calorimeter tests. The results showed that the prepared flame retardant had good thermal stability and significantly improved fire safety properties. The PUA/FePP@MoS 2 @Ni-MOF 3.0 composite exhibited notable improvements compared to pure PUA. Specifically, the peak heat release rate, total heat release rate and peak smoke production rate were reduced by 39.76%, 29.33% and 17.86%, respectively, while total smoke production and total CO production (COP) were reduced by 21.30% and 54.47%. This study provides new insights and experimental basis for the technological development of novel flame retardant coating materials.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Zhenfei Wang,Congli Li,Lei Tang,Jiahui Yang,Qi Shi,Jinxiang Dong
Ni-MOF-74 is among the most promising candidates for CO adsorption due to its highest CO adsorption capacity. However, the feasibility of using Ni-MOF-74 in actual CO/N2 pressure swing adsorption (PSA) processing cannot be reliably inferred based solely on its adsorption capacity at normal temperature and pressure. Hence, we systematically studied its CO working capacity and regenerability at different test temperatures and pressure ranges by single-component static and binary-component dynamic (CO/N2, 50%/50% and 30%/70%, v/v) experiments. The static experiments preliminarily indicated an appropriate operating temperature of 100 °C with adsorption–desorption pressures in the range of 3.0–0.1 bar for the PSA process. The working capacity and regenerability of CO were evaluated as 3.41 mmol·g–1 and 66.21% (adsorption–desorption pressure: 3.0–0.1 bar, 100 °C). A higher temperature reduces the binding force between CO and Ni-MOF-74, so that more CO is desorbed, which leads to an increase in the working capacity and regenerability of CO. Furthermore, through CO/N2 binary-component dynamic breakthrough experiments, the optimal operating temperature and CO adsorption partial pressure for the PSA process were determined as 100 °C and 1.5 bar at a total desorption pressure of 0.2 bar. Typically, for a CO/N2 composition of 50%/50%, the CO working capacity and regenerability were 2.66 mmol·g–1 and 85.25% at 100 °C and a CO partial pressure of 1.5 bar (total CO adsorption pressure of 3.0 bar) at a total desorption pressure of 0.2 bar. These results may guide PSA process design and optimization for adsorbents with strong CO binding ability.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Chengcheng Qi,Yaqi Kong,Xinyi Qi,Ziyin Yang
Metal single-atom materials are attracting tremendous attention in the field of electrochemical sensing. How to regulate the electrocatalytic activity of metal single-atom materials remains a significant challenge. Here, it was the first time that a dual hetero-atom catalyst comprising adjacent Ni N 4 and Se C 3 sites (Ni 1 Se 1 /NC) was designed for boosting electrochemical glucose sensing. Ni 1 Se 1 /NC material was synthesized through via high-temperature pyrolysis. Experimental and theoretical results demonstrate that Ni single atoms function as the primary active sites for glucose activation. Adjacent Se single atoms, while catalytically inactive, modulate the electronic structure of Ni through electron donation from Ni N 4 to Se C 3 sites. This accelerates electron transfer and enhances glucose molecule adsorption. The synergistic effect of the Ni Se atomic pair significantly boosts electrocatalytic glucose oxidation activity, resulting in a nearly 6-fold increase in glucose detection sensitivity. Unlike dual-atom site systems where both atoms serve as catalytic centers, this study reveals the unique function of the Se site as a non-catalytic modulator. Via electronic effects, Se enhances the catalytic activity of Ni sites without directly participating in the reaction, representing a departure from conventional dual-atom site mechanisms.
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