JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Pengcheng Wang,Jiaxin Li,Xuanpan Xu,Zhanhong Peng,Yihui Song,Yuan Yao,Ting Zhu,Weibin Zhang,Qianjin Wang,Hong-En Wang,Chen Qing
Developing efficient electrocatalysts for the alkaline hydrogen evolution reaction (HER) remains challenging due to sluggish water dissociation and suboptimal hydrogen adsorption. Herein, we report an in-situ precursor-leaching-induced strategy for fabricating Co x Ni 1-x (OH) 2 solid solution nanorod arrays via complete Mo leaching from hydrothermally grown Co x Ni 1-x MoO 4 ·H 2 O on Ni-Co foam. This transformation preserves the one-dimensional architecture, yielding a Mo-free, binder-free electrode with exceptional HER activity, characterized by overpotentials of 38 mV and 208 mV at 10 and 50 mA cm -2 , respectively, and stability over 300 h at 100 mA cm -2 . Experimental and theoretical analyses reveal that adjacent Ni and Co sites synergistically optimize the adsorption thermodynamics of hydrogen intermediates and promote interfacial charge transfer, while Mo is fully removed as a sacrificial component that triggers the in-situ reconstruction into a Co–Ni hydroxide solid solution. This work provides a practical route to high-performance alkaline HER catalysts enabled by atomic-level Ni–Co electronic synergy.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Lei Zhang,Tian Ai,Nan Zhang,Bo Peng,Ya Gao,Quanying Ma
To efficiently and economically remove phosphates from wastewater, this study employed a microwave–assisted hydrothermal method to successfully synthesise a bimetallic Ni/Ce organic framework composite supported on biochar. Compared to other adsorbents, this composite exhibits smaller particle size, more uniform morphology and greater defect density. Its unique structure facilitates electron transfer between the metals and the support while increasing the number of oxygen vacancies, thereby significantly enhancing adsorption performance. Adsorption experiments demonstrate that NiCe–BC–MOFs achieves adsorption equilibrium within 80 min, with a maximum adsorption capacity of 266.67 mg P/g – far exceeding most reported values in the literature. The material exhibits excellent adaptability and stability across a broad pH range (2 – 10), in the presence of multiple coexisting anions, and within diverse aquatic matrices. Its high efficiency was further validated in real phosphorus–containing wastewater. Its adsorption mechanism involves the synergistic action of hydrogen bonding, ligand exchange, ion exchange, and electrostatic attraction. Furthermore, the incorporation of biochar effectively reduces material costs, and after five cycles, the adsorption capacity remains above 82%, demonstrating good regenerability. Consequently, NiCe–BC–MOFs represent a phosphate adsorption material that combines high efficiency, low cost, and environmental friendliness, offering broad application prospects.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Gaotao Cao,Tao Zhang,Jingxing Gui,Yingtao Li,Yuting Xue,Sha Long,Baojiang Liu,Chunyan Hu,Dan Yu,Wei Wang
In modern battlefield scenarios, electromagnetic interference (EMI) from dense electronic systems and radar detection, together with infrared (IR) thermal imaging surveillance, impose dual threats to the survivability of military assets. Accordingly, advanced materials capable of simultaneously delivering high-efficiency EMI shielding and effective IR stealth are in urgent demand. Herein, we propose an asymmetric impedance-matched Ni@CoFe 2 O 4 @CNTs aerogel composite, in which one side consists of a porous CoFe 2 O 4 @CNTs aerogel (absorption layer) with an optimized mass ratio of 2:1, achieving favorable impedance matching ( Z ≈ 1) and a high absorption coefficient (A = 0.77). And the other side is coated with a dense nickel layer via selective electroless plating, acting as a reflective layer with low infrared emissivity (0.487) to re-reflect transmitted electromagnetic waves. This asymmetric architecture establishes an “absorption–reflection–reabsorption” attenuation pathway, yielding an EMI shielding effectiveness (SE T ) of 43.95 dB across the X-band and an A/R ratio of 3.55, which verifies an absorption-dominated shielding mechanism. Meanwhile, the nickel coating reduces surface IR emissivity, while the porous aerogel serves as a thermal insulator, lowering the equilibrium surface temperature to 44.7 °C when placed on an 80 °C heat source. This work demonstrates that a well-engineered asymmetric structural design enables the integration of absorption-dominated EMI shielding and superior IR stealth performance within a single lightweight aerogel.
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ACS Nano
·
2026
·
IF 17.3
Yiman Feng,Zhixing Wang,Xin Xia,Gui Luo,Duo Deng,Wenjie Peng,Wenchao Zhang,Hui Duan,Feixiang Wu,Xing Ou,Junchao Zheng,Jiexi Wang
All-solid-state lithium batteries (ASSLBs) employing Ni-rich layered oxide cathodes (NRLOs) and sulfide solid-state electrolytes (SSEs) hold great promise for high energy density and enhanced safety, yet they suffer from severe interfacial instability. This study precisely constructs a composite gradient coating on the surface of NRLOs by using atomic layer deposition. The oxygen-rich inner layer, which is induced by the reaction between TiCl4 and predeposited Li2O/LiOH, functions as an electrochemically inert barrier that enhances structural integrity and suppresses transition-metal dissolution, whereas the chlorine-rich outer layer acts as a compliant interfacial region with favorable compatibility toward sulfide SSE, which accommodates volume changes during cycling and mitigates mechanical stress at the cathode/sulfide SSE interface. Additionally, the well-structured LiCl nanocrystals formed within the coating layer improve both the cycling stability and Li+ transport kinetics. The optimized NCM95 cathode demonstrates exceptional cycling stability (96.9% capacity retention after 200 cycles) and rate capability (103 mAh g–1 at 2 C) at room temperature. This work underscores the importance of designing multifunctional coatings and provides a scalable approach to stabilizing the cathode/electrolyte interface for high-energy ASSLBs.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Chenliang Ye,Wei Zheng,Zhiguo Wang,Hao Chen,Yu Zhang,Zhiye Cheng,Haonan Ye,Shaoxuan An,Miaolun Jiao
The oxygen evolution reaction (OER) is a crucial half-reaction in water electrolysis. Currently, the sluggish kinetics of the OER limit the efficiency of water electrolysis, making the development of advanced OER catalysts imperative. Herein, utilizing carbonized wood (CW) as a self-supporting conductive substrate, we synthesized ultrafine Ni3Fe@Ni core–shell nanoparticles featuring a surface Ni3Fe alloy on unalloyed Ni nanoparticles. Ni3Fe@Ni/CW exhibits a low overpotential of 290 mV at 100 mA cm–2 with excellent stability, outperforming Ni3Fe/CW, Ni/CW, and RuO2/CW. In an overall water splitting electrolyzer, Ni3Fe@Ni/CW delivers a low cell voltage of only 1.74 V at 100 mA cm–2 with outstanding long-term stability. This unique surface-interior heterostructure, where the unalloyed Ni nanoparticles modulate both the geometric configuration and d-band center of the surface Ni3Fe alloy, optimizes the adsorption energetics of oxygen intermediates. Accordingly, for both Ni3Fe/CW and Ni/CW, the rate-determining step (RDS) is the conversion of O* to OOH*. In contrast, the RDS for Ni3Fe@Ni/CW is the OOH* to O2 step with a significantly lower energy barrier, accounting for its excellent OER performance. This work highlights the immense potential of surface-interior engineering for the rational design of high-performance OER catalysts.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Shuo Gao,Mengchen Li,Shunlong Xu,Junsu Jin,Jianguo Mi,Hong Meng
Heterometallic Ni/In-gallate was constructed by In 3+ incorporation. • CO 2 gate-opening pressure shifted from 0.10 to 0.07 bar at 298 K. • CO 2 /N 2 selectivity of Ni/In-gallate increased by about 8.5 times. • CO 2 uptake of Ni/In-gallate increased by 91.8% at 0.15 bar. • Ni/In-gallate retained 96.7% (82.15%) CO 2 breakthrough time at 40% (80%) RH. Flexible metal–organic frameworks (MOFs) exhibiting gate-opening transitions are promising for gas separations, yet their performance at low partial pressures is fundamentally constrained by the intrinsic energy barrier governing the structural transition. In this work, In 3+ was incorporated into the Ni-gallate framework to construct heterometallic Ni-O···In motifs. This modification induced localized charge redistribution and enhanced the electrostatic potential gradient within the pore environment. As a result, the gate-opening pressure for CO 2 is shifted from 0.10 to 0.07 bar, accompanied with a significant uptake at 0.15 bar (from 1.83 to 3.51 mmol g −1 ) and IAST selectivity (13287). In situ DRIFTS and kinetic analyses further show a faster establishment of CO 2 adsorption features and a stronger interaction between EPM-Ni/In-gallate and CO 2 . Changes in the electrostatic potential in localized regions within the EPM-Ni/In-gallate were investigated using XAS and PALS measurements. Furthermore, DFT calculations show a substantial reduction in the free-energy barrier for CO 2 migration between adjacent cavities. These results are consistent with a contribution from modified pore-wall polarization and gating energetics. This work identifies electrostatic control as a promising approach for tuning gate-opening transitions in flexible porous materials, providing new design principles for low-pressure gas capture.
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JOURNAL OF POWER SOURCES
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2026
·
IF 8.4
Yuqian Gao,Haotian Tan,Wenxue Chen,Jinlin Wang,Fan Luo,Hongfu Gao,Maierwaiti Jimosi,Xiaoyuan Zeng
The development of highly efficient and low-cost bifunctional catalysts is pivotal for the large-scale commercialization of water electrolysis technology. A solvothermal method was used to fabricate the bifunctional Ir 0.1 Ni/Ni(OH) 2 electrocatalyst, utilizing Ni(OH) 2 which served as both the support and the nickel (Ni) source for the in-situ formation of IrNi alloy nanoparticles via co-reduction. The significant electronegativity difference between iridium (Ir) and Ni induced electron transfer from Ni to Ir at the alloy interface, resulting in substantial interfacial electronic reconstruction. This electronic synergy optimally regulated the bifunctional activity: the electron-rich Ir sites facilitated the adsorption of hydrogen intermediates, enhancing the hydrogen evolution reaction; whereas the electron-deficient Ni sites strengthened the adsorption of hydroxyl and oxygen intermediates (OH, OOH*), significantly lowering the energy barrier for the oxygen evolution reaction. Therefore, this catalyst exhibits excellent activity and stability in both the OER and the HER. In a 1.0 M KOH solution at a current density of 10 mA cm −2 , the HER requires an extremely low overpotential of only 31 mV, while the OER requires 270 mV. Moreover, Ir 0.1 Ni/Ni(OH) 2 serves as an electrocatalyst for overall water splitting in alkaline media. This research provides a simple and effective strategy for designing advanced alloy catalysts for sustainable energy conversion.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124720
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IF 7.5
Liyuan Zhang,Daoyin Liu,Zuyang Zhang,Jiliang Ma,Zelin Xu,Hao Van Bui
CO 2 methanation via Ni/SiO 2 catalysts is an attractive method of converting CO 2 and storing renewable energy, where the Ni particle size and dispersion are decisive factors governing activity, selectivity, and durability. Here, fluidized bed atomic layer deposition (FB-ALD) was used to construct size-controlled and well-dispersed Ni nanoparticles on SiO 2 sub-microparticles for CO 2 methanation. The growth characteristics and properties of Ni nanoparticles with different ALD cycles and the methanation behaviors of Ni/SiO 2 catalysts were investigated. The results showed that adjusting the number of ALD cycles enabled precise control of both the Ni loading (2.1–6.6 wt%) and the particle size (1.2–3.0 nm) in the FB-ALD process, while ensuring uniform dispersion on the SiO 2 support. The 60ALD-Ni/SiO 2 catalyst, containing 6.6 wt% Ni, delivered 81.4% CO 2 conversion and 98.4% CH 4 selectivity at 360 °C and 0.1 MPa. The catalyst also retained stable performance during a 100-hour continuous test, with negligible coke formation and limited Ni sintering. Hence, FB-ALD is a scalable and precise platform for designing active, durable, and low-metal-loading Ni/SiO 2 methanation catalysts.
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2026
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IF 3.5
Hong-Da Zhang,Shu-Ting Bao,Shi-Chao Su,Ming-Fei Dai,Zhi-Ping Zhao,Le Sang
The coating stability of dopamine-polymer-modified Ni foam is important for its application in micropacked bed reactors. In this study, hydrophilically modified polydopamine (PDA)/Ni foam and polylevodopa (PLD)/Ni foam, and hydrophobically modified F 9 -PDA/Ni foam and F 9 -PLD/Ni foam were prepared. The hydrophobically modified Ni foam packings had a gas-liquid mass transfer enhancement performance in micropacked bed reactors. Based on the gas-liquid flushing experiment results, the stability of PDA/Ni foam and F 9 -PDA/Ni foam was better than that of PLD/Ni foam and F 9 -PLD/Ni foam. PFHS can interact with PDA and PLD to produce hydrogen bonds and chemical reactions. The adsorption of PFHS on PLD was more stable, and the chemical reaction was more spontaneous. The experiment and DFT calculation confirmed the binding strength of PDA/PLD and Ni foam acts as a key controlling factor for the overall stability of F 9 -PDA/PLD-Ni foam. As a result, the adhesion of PDA on the Ni foam was significantly better than that of PLD.
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ACTA PHYSICO-CHIMICA SINICA
·
2026
·
IF 13.5
Fulin Yang,Runze He,Sneha Mittal,Shuli Wang,Anantharaj Sengeni,Ligang Feng
The advancement of Fe-based oxygen evolution reaction (OER) catalysts lags behind their Ni-based counterparts, albeit their good theoretically predicted performance and low cost. Deeply understanding the catalytic mechanism would be necessary to advance the Fe-based catalysts. Currently, Fe-based non-metallic compounds, such as sulfides, phosphides, and selenides, have been widely explored as highly active OER precatalysts because of their tunable electronic structures and relatively high electrical conductivity. Nevertheless, these precatalysts usually undergo surface reconstruction into oxyhydroxides under OER conditions, making the real active phase different from the pristine compound and complicating the structure-performance relationship. Herein, taking the Ni-doped FeS 2 nanosphere catalyst as a platform, we discover a nuanced bidirectional electronic effect within the surface-reconstructed active phase, showcasing the vital roles of both residual FeS 2 and Ni dopants in optimizing catalytic performance. Structural characterizations confirm the successful incorporation of Ni dopants into the pyrite FeS 2 lattice. An amorphous carbon layer is coated on the sulphide nanospheres, which contributes to improving charge transfer efficiency and maintaining structural integrity during electrocatalysis. As a result, the obtained catalyst, typically denoted as Ni 0.2 -FeS 2 @C, achieves markedly enhanced OER activity in the alkaline electrolyte, requiring an overpotential of only 270 mV to reach 10 mA cm −2 , much lower than those of the undoped and uncoated counterparts (FeS 2 @C and FeS 2 ). Moreover, Ni 0.2 -FeS 2 @C exhibits negligible activity decay after 5000 cyclic voltammetry cycles and remains stable during 100 h of constant-potential operation, with Faradaic efficiency for oxygen production close to 100%, demonstrating good catalytic durability and selectivity. Spectroscopic analyses and density functional theory calculations reveal that surface reconstruction during OER leads to the formation of oxyhydroxide as reported elsewhere, but unique electronic interactions, which have not been observed earlier. On the one hand, the residual FeS 2 substrate upshifts the d -band center of the surface oxyhydroxide, strengthening the adsorption behavior of the crucial oxygenated intermediate. On the other hand, Ni dopants induce a downshift of the d -band center, which weakens over-binding inversely. The resulting bidirectional modulation optimizes the electronic structure of active sites and effectively balances the adsorption strength of OER intermediates, thereby reducing the OER energy barrier. Consequently, this work not only provides a viable strategy for the rational design of Fe-based OER catalysts but also deepens the mechanistic understanding of the real active phase of balanced electronic modulation in enhancing electrocatalytic activity. Surface reconstruction generates an oxyhydroxide active layer on Ni-doped FeS 2 for OER, where the FeS 2 substrate and Ni dopants oppositely regulate the d -band center to optimize oxygen-intermediate binding. Download: Download high-res image (295KB) Download: Download full-size image
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Yuwan Du,Yangxuepan Wang,Jinliang Ning,Sifan Cao,Dongmei Yang,Zhenchao Zhang,Yuan Liu,Xincun Dou
Qualitative and semi-quantitative detection and identification of multiple targets is of great importance in complex sample analysis, while surface-enhanced Raman scattering (SERS) could be an efficient strategy. Here, to efficiently promote the enhancement effect, Ni doping and Au nanoparticles (AuNPs) surface modification were adopted to develop a MoS 2 SERS substrate composed of intercrossed nanoflowers, named AuNPs@Ni-MoS 2 , which exhibits high SERS enhancement towards the Raman reporter (4-mercaptobenzoic acid, 4-MBA) with an enhancement factor (EF) of 10 8 . In complex matrices of different mushrooms, this substrate can also sensitively detect α -amanitin and β -amanitin with a limit of detection (LOD) of 10 −8 M for both, which laid a solid foundation for the accurate discrimination via the following machine learning-based approach. Meanwhile, based on the AuNPs@Ni-MoS 2 substrate, sensitive and specific detection of Hg 2+ was attributed to the formation of an Au-Hg alloy, which could greatly lower the catalytic potential required for the oxidation of the colorless chromogenic agent (3,3’,5,5’-tetramethylbenzidine, TMB) to a yellow oxidized TMB (TMB 2+ ). This study not only provides a reference model for improving charge transfer efficiency in SERS system but also offers technical support for rapid screening multiple analytes in complex samples.
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Catalysts
·
2025
·Vol. 15
·期 6
·559
·
IF 4
Zhizhi Tao,Dong Shen,Yanni Liu,Xiaodi Zhang,Guojie Zhang
The dry reforming of methane (DRM) converts two greenhouse gases, CH4and CO2, into H2and CO, offering a crucial technological pathway for reducing greenhouse gas emissions and producing clean energy. However, the reaction faces two main challenges: high activation energy barriers require high temperatures to drive the reaction, while sintering and carbon deactivation at high temperatures are common with conventional nickel-based catalysts, which severely limit the further development of the methane dry reforming reaction. In this study, a nitrogen-doped carbon nanotube-loaded nickel catalytic system (Ni/NCNT) was developed to overcome the challenges caused by limited active sites while maintaining the stable structure of the Ni/CNT system. Ni/NCNT catalysts were prepared using different nitrogen precursors, and the impact of the mixing method on catalytic performance was examined. Characterization using H2-TPR, XPS, and TEM revealed that nitrogen doping enhanced the metal–support interaction (MSI). Additionally, pyridine nitrogen species synergistically interact with nickel particles, modulating the electronic environment on the carbon nanotube surface and increasing catalyst active site density. The Ni/NCNT-IU catalyst, prepared with impregnated urea, exhibited excellent stability, with methane conversion decreasing from 85.0% to 82.9% over 24 h of continuous reaction. This study supports the use of non-precious-metal carbon-based catalysts in high-temperature catalytic systems, which is strategically important for the industrialization of DRM and the development of decarbonized energy conversion.
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