INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Runyu Zhang,Yudong Sui,Lina Han,Yehua Jiang
In this work, graphene oxide (GO) was integrated into the established synthesis route of Ni-TMA MOF. The results demonstrate that the resulting Ni-TMA MOF/GO shows pronounced catalytic activity toward the hydrogen sorption behavior of MgH 2 . Morphological characterization indicates that the as-prepared Ni-TMA MOF/GO possesses a dandelion-like microspherical architecture, featuring an overall spherical profile and a hierarchically porous interior with abundant voids. This structural configuration provides enlarged specific surface area and a high density of accessible active sites. Among all investigated composites, MgH 2 -3 wt.% Ni-TMA MOF/GO delivers the best overall hydrogen-storage performance. At 573 K under 2.6 MPa H 2 , it reaches a maximum hydrogen uptake of 6.3 wt%. The composite also exhibits rapid absorption kinetics, taking up 6.0 wt% H 2 within 1 min. In addition, it maintains good cycling durability: after 100 hydrogenation/dehydrogenation cycles, the reversible capacity remains 5.8 wt%.
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INORGANIC CHEMISTRY
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2026
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IF 4.6
Ran Wei,Xu Zhao,Liping Li,Guangshe Li
A series of Ni and Co codoped manganese dioxide catalysts with varying Ni/Co ratios were prepared via a two-step hydrothermal-assisted calcination process, in which Birnessite-type δ-MnO2 precursors were first synthesized hydrothermally and then calcined at different temperatures. The optimally performing Ca-NCMO11–500 (Ni/Co = 1:1, calcined at 500 °C) was identified. Systematic investigations revealed that bimetallic doping modulates the local structure and electronic states of the manganese oxide framework. The Ca-NCMO11–500 catalyst exploits Ni–Co synergistic effects to activate lattice oxygen and promote O–O coupling, resulting in superior oxygen evolution reaction activity. Electrochemical measurements demonstrate that Ca-NCMO11–500 achieves 50 mA cm–2 at an overpotential of 237 mV and maintains excellent durability with negligible activity loss over 300 h at 400 mA cm–2. This study elucidates the microscopic mechanism by which Ni and Co codoping strengthens metal–oxygen bonds and enhances lattice oxygen reactivity, providing a rational basis for the design of high-performance manganese-based electrocatalysts.
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APPLIED CATALYSIS A-GENERAL
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2026
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IF 4.8
Zhiliang Guo,Huiyu Liu,Bo Jin,Rufang Peng,Qingchun Zhang
A practical strategy was proposed to prepare interlayer Ni-Co DACs. • The Ni-Co DACs achieve a high FE CO of 97% at −0.7 V. • The interlayer Ni-Co DACs possess superior catalytic activity, selectivity, and durability. Developing highly efficient, selective, and stable electrocatalysts for the electrochemical CO 2 reduction reaction (CO 2 RR) is crucial for mitigating energy and environmental challenges. This work presents a practical strategy for synthesizing spatially discrete yet strongly synergistic interlayer dual-metal atom catalysts (DACs) with a Ni-Co configuration through pyrolysis of core-shell zeolite imidazolate frameworks (ZIFs). The resulting CoNC@NiNC catalyst features a core-shell structure where CoNC is encapsulated within NiNC. The strong interaction between the layers of NiNC and CoNC increases the density of active sites, ensures the stability of the structure, facilitates mass or charge transfer, and may produce synergistic interaction between the active sites in core and shell, which can effectively catalyze the conversion of CO 2 to CO. Benefiting from the unique interlayer Ni-Co configuration, the CoNC@NiNC electrocatalyst achieved minimal onset overpotential, high CO Faraday efficiency (FE CO = 97%), and robust operational stability at −0.7 V vs. reversible hydrogen electrode ( vs. RHE). This study demonstrates the promising potential of interlayer DACs for efficient CO 2 RR, more importantly, establishes a viable method for developing interlayer DACs, utilizes the strong interlayer interactions to drive this complex reaction, and inspires further exploration of interlayer DACs in energy conversion and beyond. Download: Download high-res image (152KB) Download: Download full-size image The interlayer dual-metal atom catalysts (DACs) with controlled local coordination environments and three-dimensional spatial structures can efficiently convert CO 2 into high-value chemicals or fuels. Herein, a practical strategy was proposed to prepare interlayer Ni-Co DACs, which have core-shell structure consisted of CoNC encapsulated within NiNC (denoted as CoNC@NiNC), by self-assembly and high-temperature pyrolysis core-shell zeolite imidazolate frameworks (ZIFs) precursor. The practice reveal that the interlayer Ni-Co DACs possess superior catalytic activity, selectivity, and durability, which demonstrates the great potential as highly efficient catalysts for CO 2 RR.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123407
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IF 7.5
Inam Ullah,Syed Musab Ahmed,Hao Lou,Zeeshan Abbasi,Zubair Ahmad,Muhammad Usman,Wenlong Wu,Zhandong Wang
The practical application of CO 2 methanation is often hindered by water-induced limitations. Conventional sorbent-assisted catalyst systems employ adsorbents merely as passive water scavengers, neglecting their potential role in reaction kinetics. Herein, we report a layer-by-layer catalyst-zeolite architecture that overcomes these limitations by synergistically promoting low-temperature CO 2 activation while enabling effective in-situ water management. This ordered configuration maximizes interfacial contact, allowing the hydrophilic NaA zeolite to actively capture and activate CO 2 at reduced temperatures while continuously removing the water by-product from the Ni/ZrO 2 surface. Consequently, the system achieves 81% CO 2 conversion with 100% CH 4 selectivity at 200 ℃. This work demonstrates that integrating Ni/ZrO 2 catalyst with a functional NaA zeolite provides an energy-efficient and robust strategy for sustained low-temperature CO 2 methanation.
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ACS Nano
·
2026
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IF 17.3
Deqin Zeng,Jinze Wang,Long Chen,Menghui Wang,Sen Jiang,Feng Shi,Shuoqing Zhang,Sheng Gao,Lili Zhang,Menghua Li,Liping Wang,Hailin Zhu,Ruhong Li,Yuhai Guo,Yuan Yu
Elevating the charging cutoff voltage is critical for practical lithium metal batteries (LMBs); however, this strategy is severely hampered by solvent parasitic reactions. Despite advances in electrode/electrolyte interface engineering, solvent molecules near the interface remain attracted by cathodic parasitic-reaction sites, resulting in solvent decomposition. Here, we propose a separator-adsorbed solvent strategy, establishing a separator–electrolyte interface enriched with adsorption sites that prevents solvent molecules from being captured by cathodic parasitic-reaction sites. The selected polytetrafluoroethylene (PTFE) separator serves to interact with positively charged regions of carbonate solvents. This combination facilitates robust separator–solvent interactions, including C–H···F weak hydrogen bonds and n → π* interactions. Significantly, these interactions generate numerous solvent adsorption sites at the separator–electrolyte interface, which compete with the active cathode surface for solvent molecules. This enables the solvent molecules to escape the attraction of cathodic parasitic-reaction sites and preferentially accumulate on the separator surface, thereby significantly suppressing solvent decomposition and stabilizing the cathode interface. The gel polymer electrolyte with a polytetrafluoroethylene separator (GPE–PTFE) enables a 4.4 V Li||LiNi0.8Co0.1Mn0.1O2 cell to achieve a high-capacity retention rate, maintaining 80% capacity over 671 cycles, nearly double the 368 cycles achieved using a polyethylene (PE) separator. Under an ultrahigh cutoff voltage of 4.7 V, the capacity retention reaches 90% after 100 cycles. This work proposes a paradigm for realizing ultrahigh-voltage LMBs through the separator–electrolyte interface.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Xiaomeng Sun,Yanfei Zhu,Weipei Chen,Jinghua Xu,Zhenyu Shi,Dianqing Li,Yanan Liu
Metal and acid sites are regarded as the most vital catalytically active components in heterogeneous catalysis. In this paper, we simply constructed the abundant unsaturated penta-coordinated species as Brønsted acid sites (AB), which could collaborate with Fe atoms-diluted and electron-modified Ni species (diluted Niδ−) to generate the bifunctional sites. The presence and integration of these two catalytically active sites significantly improved the reaction efficiency and altered the product distribution for the selective dehydrochlorination of 1,1,1,3-tetrachloropropane toward the target 1,1,3-trichloropropene. Specifically, the obtained catalysts with the synergistic sites demonstrated the synergistic catalytic functions: AB sites served as the adsorption center for 1,1,1,3-tetrachloropropane, while Fe-diluted and electron-enriched Ni species were responsible for activating hydrogen species, which further overflowed to the surface AB sites to react with the adsorbed C–Cl bonds. This work underscores the importance of assembling metal and acid sites to develop state-of-the-art catalysts with tailored dehydrochlorination performance, offering the potential for more efficient and selective industrial processes.
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JOURNAL OF CATALYSIS
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2026
·
IF 6
Qiongyu Wang,Ziheng Zhang,Xilun Zhang,Hua Xie,Ling Jiang,Fei Chang
Catalytic alkyne semi-hydrogenation is a pivotal industrial transformation currently constrained by the limitations of existing heterogeneous catalysts: precious metals (e.g., Pd) face high costs, while non-precious alternatives (e.g., Ni, Cu, Fe) generally require harsh reaction conditions (100–200 °C, 10–40 bar H 2 ). To address these persistent challenges, we propose a novel strategy integrating alkali metal hydrides, serving simultaneously as hydrogen donors and anionic “ligands” into transition metal systems. Herein, we report a NiFe-LiH composite catalyst that enables efficient and highly selective liquid-phase semi-hydrogenation of alkynes—including aliphatic, aromatic, and heteroatom-substituted substrates under very mild conditions (25 °C, ≤3 bar H 2 ). Mechanistic investigations reveal that reactive hydride species (H − ) are integral to the hydrogenation catalysis. Critically, the formation of unique Li-Ni-Fe-H interfacial species facilitate synergistic interactions wherein anionic hydrides coordinate with transition metals, modulating their electronic states to simultaneously enhance catalytic activity and selectivity. This work demonstrates room-temperature activation and transformation of alkynes enabled by a catalytic Li-Ni-Fe-H system, offering a promising new pathway for developing efficient non-noble metal catalysts for selective hydrogenation reactions.
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Yingjie Li,Na Zhao,Yilin Chen,Jun Zhang,Xianghong Liu
For metal oxide semiconductor (MOS) gas sensors, achieving rapid and highly sensitive responses at room temperature (RT) remains a significant challenge. In this study, Ni-doped SnO 2 nanoparticles (NPs) were synthesized via a sol-gel method. The incorporation of nickel ions substantially enhanced the RT NO 2 sensing performance of SnO 2 . At an optimal doping concentration (5 at%), the SnO 2 NPs exhibited high sensitivity, excellent selectivity, and good stability, with a nearly 120-fold enhancement in sensor response. The excellent sensor performance can be attributed to the fact that when Ni 2 + enters the SnO 2 lattice and replaces Sn 4+ , it disrupts the defect balance in the SnO 2 lattice. The presence of Ni 2+ in the SnO 2 crystal captures free electrons in the sensitive material, forming oxygen ions and oxygen vacancies, which alters the defect balance of the gas-sensitive element and promotes the adsorption of NO 2 on the SnO 2 surface. This doping strategy effectively lowered the operating temperature of SnO 2 , enabling reliable NO 2 detection under RT conditions. Additionally, the experimental detection limit of the sensor reached as low as 100 ppb, far below the threshold of 200 ppb recommended by the American Conference of Governmental Industrial Hygienists (ACGIH). This work provides an effective sensitization strategy for developing RT gas sensors.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Qiankun Xu,Rui Wang
MOF-derived NiCo/NPC electrocatalyst was constructed with tailored M-N 4 coordination environments. • Ni incorporation regulated Co electronic structures for accelerated oxygen evolution reaction. • DFT calculations elucidated the electronic modulation mechanism and optimized OER energetics. The development of efficient, low-cost, and scalable oxygen evolution reaction (OER) catalysts is crucial for practical water electrolysis. Herein, a MOF-derived NiCo/NPC electrocatalyst containing predominantly atomically dispersed Co–N 4 /Ni–N 4 sites is prepared by controlled Ni incorporation into ZIF-67-derived porous carbon. The optimized 50% NiCo/NPC exhibits an overpotential of 207 mV at 10 m⋅A cm⁻ 2 , a Tafel slope of 51.6 mV⋅dec⁻ 1 , and stable operation for over 100 h, outperforming Co/NPC and commercial RuO 2 . Aberration-corrected HAADF-STEM directly visualizes atomically dispersed Co and Ni species, while synchrotron X-ray absorption spectroscopy confirms the Co–N 4 coordination environment and reveals that Ni incorporation modifies the electronic environment of the Co sites. Density functional theory calculations further show that Ni incorporation shifts the Co d -band center toward the Fermi level and lowers the energy barrier of the rate-determining step, accounting for the enhanced OER activity. In an anion exchange membrane water electrolyzer, the catalyst delivers current densities of 1000 and 4000 mA ⋅cm⁻ 2 at 2.02 and 2.46 V, respectively. This work provides an effective strategy for improving the OER performance of MOF-derived electrocatalysts through regulating the electronic structure of Co active sites. Download: Download high-res image (186KB) Download: Download full-size image Ni-doped ZIF-67 is converted via pyrolysis into morphology-retained Co–N 4 and Ni–N 4 single-atom active sites embedded in N-doped porous carbon (NiCo/NPC). Benefiting from the Ni-induced electronic modulation of Co active sites, together with the enhanced conductivity of the carbon framework, the catalyst achieves efficient and durable OER performance with a low overpotential.
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ACS Catalysis
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2026
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IF 13.6
Kaixuan Huo,Qi Li,Yang Wang,Hu Jiang,Zhinian Cheng,Yu Sun,Ying Zhang,Luyuan Zhou,Tao Xing,Yiwu Lu,Jiancai Sui,Qiang Liu,Jinqiang Zhang,Han Hu,Noritatsu Tsubaki,Mingbo Wu
The evolution behavior of reaction intermediates plays a pivotal role in directing the performance of dry reforming of methane (DRM), yet precise control strategies remain limited. Herein, we present a laser-etching technique for the controllable synthesis of defective carbon-supported Ni (Ni/C) catalysts. Comprehensive characterization and density functional theory (DFT) simulations collectively reveal that tuning the laser etching power enables the precise regulation of defect density in the carbon support. A moderate defect density not only optimizes the electronic states and particle size of Ni sites but also maintains the size stability of Ni nanoparticles. Such synergistic effects achieve an optimal balance between deep dehydrogenation and oxidation of CHx* intermediates, delivering CH4 and CO2 conversion of 73 and 75%, respectively. This work provides a novel and effective approach for enhancing the DRM performance of carbon-supported Ni-based catalysts.
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Nature Communications
·
2026
·
IF 18.1
Ma Huijing,Wang Haifei,Cai Chengcheng,Song Hongyu,Guo Qianqing,Long Xia,Qian Xufang,Zhao Yixin
Low-platinum-loading electrocatalysts, offering both high activity and durability under practical conditions, are essential for sustainable hydrogen production. Here we report a scalable synthesis of a platinum single-site catalyst supported on Ni-N-doped carbon nanotubes, achieved via a facile Ni-driven one-step reduction-displacement of Pt 4+ . The catalyst NCNT-Ni/Pt features a N 2 -Pt-Cl 2 initial coordination, where the dynamic evolution of Pt-Cl bonds regulates the hydrogen evolution reaction performance. Excitingly, the catalyst demonstrates an overpotential of 7.78 ± 0.86 mV at 10 mA cm –2 . With a Pt loading of 6 μg cm –2 , it enables industrially relevant proton exchange membrane water electrolysis at 1.63 V@1 A cm –2 , with a degradation rate of 3.3 μV h –1 , sustained over 4500 h. Coupled with a 21%-efficient photovoltaic module, it delivers a 16.06% solar-to-hydrogen efficiency at industrial-level current density. This study presents a practical strategy for minimizing precious-metal use in the synthesis of industrial-grade hydrogen evolution electrocatalysts.
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CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·
IF 3.7
Zhiqiang Zheng,Tian Qiu,Zhanghua Fu,Chuang Chen,Huancai Li,Cheng Hu
Graphical The heteroepitaxial Li deposition occurs on single-crystalline Ni(110) substrates, exhibiting the same {110}<001> texture with the substrate and a planar morphology. Using the {110}-textured epitaxial layer as the Li anode, the Li||LiPeO 4 full cell presents improved cycle life, compared with the {111}-textured Li anode and untextured Li anode. Lithium (Li) metal is recognized as a highly promising anode material for next-generation high-energy-density batteries. Nonetheless, dendrite growth and low coulombic efficiency (CE) significantly impede the practical application of Li metal anodes. The deposition morphology and chemical stability of Li are intricately linked to its crystallographic orientation. This study presents a substrate engineering approach that employs single-crystalline nickel (Ni) to facilitate epitaxial Li deposition due to their excellent lattice matching. The findings reveal that the Ni(110) substrate exhibits a more pronounced heteroepitaxial effect than Ni(111). A robust {110}-textured Li deposition was prepared on Ni(110) with a uniform planar morphology due to the lower Li self-diffusion barrier on the Li(110) plane. The {110}-textured Li epitaxial deposition improves the cycling stability in Ni-Li cells and full cells. Notably, the Li||LiFePO 4 full cell utilizing the {110}-textured Li anode exhibits a high capacity retention of 109.6 mAh cm −2 over 350 cycles at 1 C under a low negative-to-positive capacity ratio of 1.26. This investigation highlights the crucial role of substrate-induced heteroepitaxy in improving Li plating/stripping dynamics and provides insights for the development of stable Li metal anodes by crystallographic orientation modification.
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