NEW JOURNAL OF CHEMISTRY
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2025
·
IF 2.5
Ziyu Tang,Chuanlin Mou,Yadong Li,Shihao Chen,Xianmin Yang,Xu Ding,Hongbo Deng,Linyuan Wang
Here, we report a controllable strategy for fabricating monodispersed microspheres composed of poly(butyl methacrylate) (BMA) and silane-modified Cu/Ni-embedded metal-organic framework (MOF)-TiO₂ composites (denoted as BMA@Cu/Ni@MOF-TiO₂ microsphere) for efficient photocatalytic degradation. Monodispersed oil-in-water (O/W) emulsion templates are prepared by a microfluidic device, which contain silane-modified Cu/Ni@MOF-TiO2 in oil phase. Utilizing benzildimethyl ketal (BDK) as a photoinitiator, porous microspheres can be obtained through a straightforward photopolymerization process initiated by ultraviolet light. When the concentration of the surfactant polyglycerol polyricinoleate (PGPR 90) is 14% (w/v) and the crosslinker trimethylolpropane trimethacrylate (TMPTMA) is 12% (w/v), the BMA@Cu/Ni@MOF-TiO2 microspheres have good monodispersity, and the average diameter is 180.7 μm and coefficient of variation (CV) is 3.64%. When silane-modified Cu/Ni@MOF-TiO2 loading is 0.4% (w/v), the removal rate to methylene blue (MB) is up to 96.2% in 20 min, which is higher than that of powdered (86.6%). Under the optimal conditions, the removal rate of methylene blue reached 99.3% within 50 minutes. Moreover, after 5 cycles of testing, the degradation efficiency remained above 97.94%,, which strongly demonstrated the reusability of BMA@Cu/Ni@MOF-TiO2 microspheres. The photocatalytic mechanism involves the generation of electron-hole pairs in Cu/Ni@MOF-TiO2 under light irradiation, which react with O2 to produce reactive oxygen species (ROS) to degrad MB. The characterization results of XPS, and FTIR show that the silane-modified Cu/Ni@MOF-TiO2 is successfully loaded into the microspheres. BMA@Cu/Ni@MOF-TiO2 microspheres have a specific surface area of 5.962 m2/g and a specific volume of 2.491 cm3/g, providing sufficient diffusion channels and active sites for MB dyes. Therefore, BMA@Cu/Ni@MOF-TiO2 microspheres have excellent recyclability, high stability and attractive photocatalytic degradation efficiency, and show potential application prospects in the future treatment of dye wastewater.
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高影响因子
Small
·
2025
·
IF 12.1
Su Tang,Tao Zhong,Zhangnan Yao,Wei Qu,Ting Li,Huinan Zhao,Shuanghong Tian,Chun He
Frustrated Lewis pairs (FLPs) present new opportunities for the development of highly active spinel materials for the activation of stable molecules. Herein, a Ni and Co-based spinel with abundant FLPs sites (NiCo 2 O 4 -F) is synthesized through morphologic defect engineering and used for efficient catalytic ozonation CH 3 SH elimination. Characterization results reveal that the NiCo 2 O 4 -F with nanoflower structure exposes more surface oxygen vacancies (Ov), inducing local charge redistribution and forming active regions. Ov acts as Lewis basic sites, while the unsaturated coordinated Ni atoms (Ni uc ) act as Lewis acidic sites, and spatially ≈4.08 Å. The Ov···Ni uc FLPs function as “electron shuttles” in the reaction, facilitating specific adsorption of reactants via the dual acidic–basic reaction sites, thereby activating O 3 to generate ·O 2 − and 1 O 2 species to achieve deep oxidation of CH 3 SH. The resulting NiCo 2 O 4 -F catalyst exhibits an outstanding CH 3 SH removal efficiency of 94.4%, achieving a high mass activity (5.6 ppm mg −1 ), which is 70 times greater than that of commercial MnO 2 (0.08 ppm mg −1 ). This work presents a promising approach to developing sophisticated ozone catalysts by controllable construction of acid–base sites on spinel surface, enhancing the understanding of the role of FLPs structure in molecular activation.
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PubMed
高影响因子
Catalysts
·
2025
·Vol. 15
·期 8
·703
·
IF 4
Yitong Zhao,Meng Liu,Yao Ning,Ying Zhang,Zhijie Wu
In our previous work, we fabricated Ni single-atoms within Beta zeolite (Ni1@Beta-NO3−) using NiNO3·6H2O as a metal precursor without any chelating agents, which exhibited exceptional performance in the selective hydrogenation of furfural. Owing to the confinement effect, the as-encapsulated nickel species appears in the form of Ni0and Niδ+, which implies its feasibility in metal catalysis and coordination catalysis. In the study reported herein, we further explored the hydrogen production and olefin oligomerization performance of Ni1@Beta-NO3−. It was found that Ni1@Beta-NO3−demonstrated a high H2generation turnover frequency (TOF) and low activation energy (Ea) in a sodium borohydride (NaBH4) hydrolysis reaction, with values of 331 min−1and 30.1 kJ/mol, respectively. In ethylene dimerization, it exhibited a high butylene selectivity of 99.4% and a TOF as high as 5804 h−1. In propylene oligomerization, Ni1@Beta-NO3−demonstrated high selectivity (75.21%) of long-chain olefins (≥C6+), overcoming the problem of cracking reactions that occur during oligomerization using H-Beta. Additionally, as a comparison, the influence of the metal precursor (NiCl2) on the performance of the encapsulated Ni catalyst was also examined. This research expands the application scenarios of non-noble metal single-atom catalysts and provides significant assistance and potential for the production of H2from hydrogen storage materials and the production of valuable chemicals.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Jinyu Wu,Zhongyan Wang,Kelan Zhang,Ze Wu,Lingyi Meng,Heng Chen,Xiaoxia Hu,Xiaohui Ma,Anran Guo
For continuing to explore new high-entropy materials, the first high-entropy ilmenite-phase titanate, (Mg,Co,Ni,Zn)TiO 3 , is synthesized in this work, further introducing a new crystal structure type for high-entropy ceramics. The uniform chemical composition and typical ilmenite-phase structure of high-entropy (Mg,Co,Ni,Zn)TiO 3 are verified by XRD, SEM, TEM, EDS, and XPS. Homogeneous element distribution and magnetically-coupled atomic arrangement are further performed using Rietveld refinement, Raman spectral fitting, and high-resolution STEM. On this basis, complementary density functional theory simulation with Hubbard correction (DFT + U) is conducted to reveal the band structure and a 2.529 eV bandgap of high-entropy (Mg,Co,Ni,Zn)TiO 3 , thereby enhancing the potential for high emissivity and electronic applications. Excellent thermal stability at 1000–1200 °C, a low thermal conductivity of 2.365 W·m⁻¹·K⁻¹ at room temperature, a high hemispherical emissivity of 0.93 within the 3–14 μm wavelength range, and a low dielectric constant of 22.23 are also demonstrated.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zijun Huang,Xiaohua Cao,Hao Wang,Dingkai Chen,Xianming Chen,Dedong He,Shuquan Huang,Yongming Luo
Propane dehydrogenation (PDH) is a potential secure technique for manufacturing propylene. Transition-metal-based catalysts for propane dehydrogenation reaction, particularly Co 2+ , have been developed rapidly over the past few years. However, determining the interaction between Co 2+ species and zeolites has proven to be a formidable challenge in achieving the controllable construction of Co species as active sites for dehydrogenation. In this study, we synthesized a nickel–cobalt catalyst supported on self-pillared pentasil zeolite (CoNi@SPP) with a moderate metal oxide-support interaction for the PDH reaction. Specifically, the interaction is achieved by the electron transfer between nickel and cobalt, which subsequently reduces the strength of the Co 2+ interaction with the silicon support. Further insights provided by pyridine IR spectra and NH 3 -TPD emphasize that such moderate interaction results in an increased number of Lewis acid sites, ultimately intensifying the PDH produce propylene and H 2 . The detailed study of catalyst’s properties provides new inspirations into utilizing additive to optimize metal oxide-support interactions, thus facilitating the development of highly active cobalt-based catalysts for propane dehydrogenation.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yaru Xue,Zehui Ma,Nan Yang,Yu Gao,Xiaoxuan Yin,Furang Li,Yifeng Chen,Jiangcheng Li,Yuchao Lyu,Xinmei Liu
The deoxygenation of natural oils is the most mature technology for bio-aviation fuel production. The Ni-ZrO 2 catalyst has been widely researched for the deoxygenation reaction whose catalytic behavior is largely determined by Ni dispersion and oxygen vacancy (Ov) concentration. However, few studies succeed in controlling these two critical factors simultaneously, which hinders further improvement in performance. Herein, an in-situ grinding synthesis method was developed for simultaneous doping of Ni 2+ into ZrO 2 lattice to generate more Ov (O V -Ni-ZrO 2 ) and fabrication of dispersed Ni nanoparticles over the Ni-ZrO 2 catalyst. It involved grinding of nickel source and ZrO 2 precursors followed by crystallization, thus avoiding extra solvents. DFT calculations indicate that doping of Ni 2+ promotes formation of O V -Ni-ZrO 2 which exhibits stronger adsorption capacity toward fatty acid ester and oxygen-containing intermediates than those on pure ZrO 2 (O V -ZrO 2 ). Besides, more Ov-Ni-ZrO 2 interface species and basic (acid) sites are generated over the Ni-ZrO 2 catalyst. The deoxygenation of methyl laurate (ML) proceeds through hydrogenolysis of ML into CH 4 and lauric acid followed by decarbonylation to alkanes. The synergetic effect between dispersed Ni and abundant O V endows the Ni-ZrO 2 catalyst with complete conversion and C 9 -C 12 alkanes yield of 93.2 % in deoxygenation of ML, outperforming the impregnated counterpart significantly.
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高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 24
·
IF 4.3
Luan Liu,Hongru Liu,Zikang Chen,Genghua Cao,Xiaoyu Wu,Baorui Jia,Xuanhui Qu,Mingli Qin
A rapid solvent-free microwave-assisted strategy was developed to fabricate Pt- and Ni-modified Co(OH)2catalysts for alkaline hydrogen evolution. Among them, Ni-Pt@Co(OH)2, prepared via sequential Ni-first then Pt loading, exhibited the best performance. Structural analyses confirmed uniform Pt dispersion with dominant Pt(111) facets, while ICP-MS showed reduced Pt usage compared to Pt@Co(OH)2. Electrochemical measurements in 1.0 M KOH revealed an overpotential of 71 mV at 10 mA·cm−2, comparable to Pt/C, and a mass activity 4–6.5 times higher across 25–75 mV. EIS demonstrated lower charge-transfer resistance, and stability tests showed negligible degradation after 3000 CV cycles and 11 h continuous operation. The outstanding performance arises from enhanced Pt utilization, abundant conductive sites, and strong Ni-Pt interfacial synergy, highlighting Ni-Pt@Co(OH)2as a promising catalyst for efficient alkaline HER with reduced Pt consumption.
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PubMed
高影响因子
RARE METALS
·
2025
·
IF 11
Haoran Li,Xin Li,Qilin Gu,Shiyou Zheng
en Transition metal-based amorphous/crystalline (a/c) heterostructured catalysts have garnered significant attention due to their exceptional activity, stability, and cost-effectiveness. However, the precise synergistic regulation of interfacial composition and phase states remains challenging. Herein, we propose an innovative strategy for the controllable synthesis of a/c heterostructures using MIL-100(Mn) template. By leveraging the intrinsic coordination disparity between Ni 2+ and Fe 3+ to drive phase separation, combined with F − mediated ion exchange-phosphidation synergy, we successfully constructed an amorphous FeP x /crystalline Ni 2 P heterostructure (a-(F, Fe)P x /Ni 2 P) with precise compositional control. Systematic investigations reveal that F − not only enhances metal ion exchange through complex stabilization but also induces amorphous/crystalline phase separation via electronic modulation. Meanwhile, a deep reconstruction process occurs under high voltage, transforming the catalyst into active F-Fe/NiOOH species, which further enhances the catalytic activity and durability. Benefiting from the synergistic effects of heterointerface electronic coupling and deep reconstruction, the as-prepared a-(F, Fe)P x /Ni 2 P catalyst exhibits exceptional oxygen evolution reaction (OER) performance in 1 M KOH, delivering an ultralow overpotential of 278 mV at 30 mA cm −2 and maintaining excellent stability over 100 h with negligible degradation. This work establishes a novel “coordination difference-driven, fluorine-mediated” interface engineering strategy, offering valuable insights for the rational design of high-performance heterostructured electrocatalysts. 摘要 zh 基于过渡金属的非晶/晶体异质结构催化剂因其卓越的活性、稳定性和成本效益而备受关注。然而,对其界面组成与相态的精确协同调控仍面临挑战。在此,我们提出了一种利用MIL-100(Mn)模板可控合成非晶/晶体异质结构的新颖策略。通过利用Ni 2+ 与Fe 3+ 之间的本征配位差异驱动相分离,并结合F − 介导的离子交换-磷化协同作用,我们成功构建了具有精确组分调控的非晶FeP x /晶体Ni 2 P异质结构(标记为a-(F, Fe) P x /Ni 2 P)。系统研究表明,F − 不仅通过络合稳定作用增强了金属离子交换效率,还通过电子调控诱导了非晶/晶体相分离。同时,催化剂在高电位下发生深度重构过程,转变为活性的F-Fe/NiOOH物种,从而进一步增强了催化活性与耐久性。受益于异质界面电子耦合与深度重构的协同效应,所制备的a-(F, Fe)P x /Ni 2 P催化剂在1 M KOH电解液中表现出优异的析氧反应性能,在30 mA cm −2 电流密度下仅需278 mV的极低过电位,并能稳定运行超过100 h而无明显衰减。本研究确立了一种全新的“配位差异驱动、氟离子介导”的界面工程策略,为合理设计高性能异质结构电催化剂提供了有价值的见解。
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高影响因子
Metals
·
2025
·Vol. 15
·期 12
·1320
·
IF 2.5
Xinyi Yuan,Rongcheng Sheng,Yizhe Du,Dengfu Chen,Mujun Long,Huamei Duan
To address the demands of modern high-speed and high-quality continuous casting production, depositing high-performance coatings on the surface of mold copper plates is critically important for extending the service life of continuous casting molds. To this end, a Ni-Co-Cr/SiC nanocomposite coating was developed, and cryogenic treatment was applied to further improve its hardness and wear resistance. This work systematically investigates the microstructural evolution and performance enhancement of the Ni-Co-Cr/SiC nanocomposite coating under different cryogenic treatment parameters, with special emphasis on the effects of treatment temperature on the coating’s microstructure, hardness, wear resistance, and adhesion to the substrate. The results demonstrate that decreasing the cryogenic treatment temperature and extending the holding time effectively refine the grains of the coating while simultaneously promoting the accumulation of microstrain and dislocation density. These changes lead to significant improvements in hardness, wear resistance, and interfacial bonding performance. Specifically, after direct immersion at −196 °C for 16 h, the coating reached a hardness value of 946.5 HV, and the wear rate was reduced to 0.032 mm3·(N·m)−1, representing only 54.6% of that of the untreated coating. The dominant wear mechanism transitioned to a mixed mode of abrasive wear and oxidative wear. Moreover, the cryogenic treatment enhanced the stability of the coating-substrate adhesion.
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高影响因子
FUEL
·
2025
·
IF 7.5
Yutong Zhu,Guohua Miao,Yucheng Hu,Ning Yan,Tingting You,Haq Nawaz,Zhen Wu,Feng Xu
Ni-based catalysts show promise in valorization of bio-based aldehydes. Designing an efficient and stable Ni-based catalysts for bio-conversion still remains a significant challenge. In this work, a sustainable, simple, and solvent-free method was developed to synthesize Ni x Zn@CNT catalyst with unique active phase Ni 3 ZnC 0.7 encapsulated in carbon nanotubes (CNT). The amount of active phase was regulated by varying Ni/Zn doping content. The as-obtained Ni 4 Zn@CNT (Ni/Zn ratio is 4:1) demonstrated excellent catalytic activity for furfural hydrogenation, yielding 99% conversion and 86.75% selectivity to furfuryl alcohol (FAOL). Density functional theory (DFT) calculations, XRD, and Py-FTIR analyses demonstrated that the activation of FAOL and H 2 was synergistically enhanced by the formed Ni 3 ZnC 0.7 phase and Ni 0 . Benefiting from the encapsulation of the active phase uniformly in CNT, Ni 4 /Zn@CNT catalyst displayed outstanding reusability with more than 98% of the furfural conversion even after reuse for six times, thereby outperforming most reported Ni-based catalysts. The method developed in this study provides a sustainable approach for preparing highly durable and efficient Ni-based catalysts for hydrogenation reaction.
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高影响因子
FUEL
·
2025
·
IF 7.5
Jie Gao,Hangjia Zhang,Jingyu Ran,Chuan Ma,Xin Huang,Yunlin Shao,Huayu Qiu,Zhiliang Ou,Lei Tang
Dry reforming of methane (DRM) is an efficient way to convert the two main greenhouse gases (CH 4 and CO 2 ) into syngas. This study reported an efficient CaCr 2 O 4 -supported Ni-Co bimetallic catalyst for its DRM activity and anti-coking performance through experiments, characterization, and DFT calculations, with an emphasis on elucidating the role of Ni-Co bimetals in CaCr 2 O 4 catalysts. The results demonstrated that the optimal 13Ni2Co/CaCr 2 O 4 catalyst achieved 94.8 % CH 4 and 96.8 % CO 2 conversions, under conditions of 800 °C and 27,000 mL·h −1 ·g −1 . Characterization results indicated that the alloying effect induced by introducing 2 wt% Co promoted the uniform dispersion of active metals, improved the reducibility and surface basicity of the catalyst, which collectively contributed to its superior catalytic performance. The catalyst also exhibited high thermal stability and excellent coke resistance at 800 °C, with a surface carbon deposition amount of only 0.93 % after 10 h continuous operation. This was attributed to the weak adsorption of surface carbon by Co, thereby reducing the carbon deposition degree. Moreover, the abundant strong basic sites on the surface significantly enhance CO 2 adsorption, while the surface-active adsorbed oxygen further facilitates the elimination of carbon deposits. This research provides valuable insights for the design and development of alloy catalysts in catalytic reaction.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Binkai Yuan,Guibin Tan,Gengzhe Shen,Liuyan Zhang,Xinyu Tian,Yang Yang,Suye Li,Yidong Huang,Xingyu Zhu,Zeyi Guan,Fujian Guo,Yanmei Zhang
To overcome waterborne epoxy coating’s limitations (poor long-term corrosion resistance, insufficient self-healing, microdefect-induced penetration), this study developed a high-performance smart anti-corrosion coating modified with MXene-Ni@C-ODD composite filler and regulated by magnetic field. The filler was facilely prepared via pyrolysis of MXene-Ni-MOFs (Ti 3 C 2 T x −Ni 3 HHTP 2 ) and subsequent loading of ODD(1-(2-Aminoethyl)-2-heptadecenyl-2-imidazoline, diethylsulfate salt). Electrochemical tests in 3.5 wt% NaCl showed the magnetically regulated (MMO) coating exhibited optimal performance, outperforming Blank, ODD, and MO coatings: after 60-day immersion, its achieved a charge transfer resistance ( R ct ) of 1.02 × 10 10 Ω·cm 2 (7.2 times that of the Blank coating; corrosion current density ( i corr ) of 1.78 × 10 −13 A·cm −2 (1/2.6 of that of the Blank coating) and corrosion potential ( E corr ) of −0.1791 V. MXene-Ni@C’s mesoporous structure (specific surface area: 147.812 m 2 /g) mitigates ODD-induced epoxy curing interference and enables responsive ODD release, while its ferromagnetism (saturation magnetization: 10.59 emu/g) allows magnetic field-driven parallel filler alignment. Scratch tests confirmed self-healing ability via ODD release triggered by exposed metal substrate’s electronegativity. This “magnetically enhanced physical barrier + ODD self-healing” synergy support for high-performance smart anti-corrosion coatings.
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高影响因子
危险品化学品经营许可证（带存储）