LANGMUIR
·
2026
·Vol. 42
·期 31
·22950-22957
·
IF 4.4
Chen Nannan,Yuan Qingle,Liu Qin,Zhang Chao,Wu Zhengcui,Bi Wentuan
Single-atom catalysts (SACs) hold great promise for the
electrochemical
reduction of CO 2 to CO; however, the high selectivity is
typically restricted within a narrow potential window, limiting their
practical implementation. In this study, Ni–N–C catalysts
were supported on ordered and disordered carbon nanofiber membranes
(denoted as o-NiNC and d-NiNC, respectively) via electrospinning to
elucidate the effect of nanofiber alignment on CO 2 reduction
activity. The results demonstrate that o-NiNC catalysts allow for
spatially uniform H + /CO 2 delivery and consumption,
thereby mitigating the selectivity variations arising from uneven
spatial distribution of reactants. As a result, the o-NiNC catalysts
achieve a CO Faradaic efficiency (FE) of 98.5% at −1.0 V and
maintain an FE above 90% across a broad potential range (−0.6
to −1.6 V). This work provides new insights into the rational
design of high-performance CO 2 reduction electrocatalysts
through geometric engineering.
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PubMed
高影响因子
ENERGY & FUELS
·
2026
·Vol. 40
·期 31
·16999-17010
·
IF 6
Qi Youwei,Li Xuanyi,Zhao Mingxing,Mao Yuxiang,Cheng Jun
To address the challenges of low utilization of active
sites and
poor thermal stability of catalysts in the conversion of microalgal
biodiesel into biojet fuel under CO 2 atmosphere, a nickel-rich
carbon sheet catalyst was synthesized through partial pyrolysis of
a nickel-based aminoterephthalic acid framework (Ni-NH 2 –BDC) to enhance conversion rate and product selectivity.
Because the specific surface area of Ni-NC-500 derived from pyrolyzed
Ni-NH 2 –BDC at 500 ° C increased from 20.866
to 304.337 m 2 /g, more generated Ni 0 active sites
(33.69%) strengthened the deoxidation of methyl palmitate (a typical
composition of microalgal biodiesel). Compared with Ni-NH 2 –BDC, the total acid of Ni-NC-500 has significantly increased,
reaching 58.485 mmol/g, which will promote C–C bond breaking.
The large amounts of pyridine nitrogen (N-6, 39.98%) and pyrrole nitrogen
(N-5, 60.13%) present in Ni-NC-500 can significantly enhance the catalytic
performance. Therefore, the conversion rate of methyl palmitate and
the selectivity for jet-fuel range (C8–C16) products increased
to 96.28 and 84.69%, respectively.
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高影响因子
POLYMER COMPOSITES
·
2026
·
IF 4.9
Guoqin Jiang,Zhixiong Huang,Yuzhan Lu,Haoyu Wang,Zongyi Deng
Reusable hypersonic vehicles require large area thermal protection materials with high resistance to oxidation corrosion. Conventional carbon fiber/phenolic resin composites suffer from poor oxidation corrosion resistance and are limited to single use. Here we develop a novel ceramizable composite consisting of Ti 3 AlC 2 -MoSi 2 -SiB 6 modified Ni coated carbon fiber reinforced boron phenolic resin. After 1 to 15 thermal cycles at 1200°C for 15 min each, the composite shows excellent dimensional stability. The changes in mass, thickness, and density after 15 cycles are all within 7% of the initial heat-treated sample. Flexural strength reaches 28.0 MPa after 10 cycles and remains 19.4 MPa after 15 cycles. The superior oxidation corrosion resistance arises from the synergistic effects of oxygen consumption, oxygen barrier, and self-healing functions provided by the ceramizable fillers and Ni coating. In situ formed ceramic phases preserve the fiber skeleton integrity. Ni catalyzes pyrolytic carbon (PyC) graphitization and together with ceramization products forms a dense multiphase ceramic layer that protects against oxidative attack. These synergistic effects endow the composite with outstanding reusable performance for hypersonic vehicle applications. Highlights A novel reusable ceramizable composite is fabricated by a dual-modification synergistic reinforced strategy involving ceramizable fillers and fiber coatings. It exhibits satisfactory oxidation resistance, dimensional stability, and reusability. The flexural strength after 10 thermal cycles reaches 28.0 MPa.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yunxu Yang,Xiaoxi Huang,Yong Shen Chua,Hooi Ling Lee
Fe–SnO 2 @NiO–NF removed 96.85% CIP within 150 min under solar light. • S-scheme heterojunction promotes charge separation and photocatalytic activity. • 3D NiO–NF support enables easy recovery and abundant active sites. • Over 94% degradation activity was retained after four cycles. • DFT and HPLC–MS reveal charge transfer and CIP degradation pathways. Photocatalysis is effective for antibiotic degradation but limited by poor charge separation and difficult recovery of powder catalysts. In this work, a macroscopic p–n heterojunction photocatalyst (Fe–SnO 2 @NiO–NF) was prepared on pre-oxidized nickel foam through in situ growth and microwave-assisted synthesis. XRD confirmed the coexistence of SnO 2 and NiO phases, while HRTEM and XPS analyses verified the successful construction of the Fe–SnO 2 /NiO heterojunction with intimate interfacial contact and interfacial electronic interaction. UV–vis DRS, PL, TRPL, EIS, and photoelectrochemical measurements demonstrated markedly improved light absorption, charge separation and transfer behavior, with a narrowed band gap of 2.92 eV and a prolonged average carrier lifetime of 1.2226 ns. Owing to the enhanced charge separation and the conductive 3D NiO–NF framework, Fe–SnO 2 @NiO–NF exhibited significantly improved photocatalytic activity for ciprofloxacin degradation under solar irradiation, reaching 96.85% removal within 150 min, while the immobilized catalyst could be readily separated from the aqueous solution. ESR and scavenging test identified •O 2 – and h + as the main reactive species, with •O 2 – playing the dominant role, while HPLC–MS revealed the degradation intermediates and pathways. Band structure analysis and DFT calculations demonstrated that the p–n heterojunction follows an S-scheme charge transfer mechanism, promoting efficient charge separation while preserving strong redox capability. The composite retained over 94% of its initial activity after four cycles, showing excellent stability and recyclability. This study provides a practical way to develop efficient and reusable photocatalysts for antibiotic wastewater treatment. Download: Download high-res image (182KB) Download: Download full-size image
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124205
·
IF 7.5
Kaige Chen,Jie Li,Yongxiang Wang,Yong Dai,Yongming Luo,Xiaohua Cao,Xiaoping Xing
Photothermal conversion of CO 2 to methane offers a promising pathway for simultaneous carbon recycling and renewable energy storage. To date, Ni-based catalysts dominate CO 2 methanation. However, their low-temperature activity under photothermal conditions still requires improvement. MTiO 2 derived from Ti 3 C 2 MXene retains its two-dimensional (2D) layered structure and excellent photothermal conversion properties. Herein, we synthesized Ru-Ni@MTiO 2 catalysts through hydrothermal treatment of Ni-impregnated MTiO 2 with controlled Ru loading ( x = 1, 3 and 5 wt%). The optimal 3Ru-Ni@MTiO 2 catalyst achieved a CH 4 production rate of 86.25 mmol·g −1 ·h −1 at 300 °C, which is 1.3-fold higher than that of the Ru-free Ni@MTiO 2 counterpart. The superior catalytic performance stems from the synergistic electronic effect between Ni and Ru and their dual-site cooperation. Electron transfer from both Ru and MTiO 2 to Ni sites elevates the electron density of metallic Ni, which weakens the H-H bond and accelerates the dissociative adsorption of H 2 . Furthermore, Ru loading not only broadens the light absorption range and promotes photogenerated charge separation, but also increases the density of moderate basic sites, thus boosting CO 2 adsorption and activation. This work provides new insights into the design of bimetallic photothermal catalysts for CO 2 methanation.
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高影响因子
Molecular Catalysis
·
2026
·
IF 4.3
Ijaz Hussain,Saheed A. Ganiyu,Ivan Kozhevnikov,Khalid R. Alhooshani
We synthesized a highly efficient Ni/CeO 2 -B catalyst with a unique Haystack-like morphology for DRM. • The haystack-like morphology of CeO 2 is responsible for enhanced oxygen mobility, Ni dispersion, and strong metal-support interactions. • The Ni/CeO 2 -B catalyst demonstrated remarkable CH 4 and CO 2 conversion rates. • The prepared catalyst maintained stable performance over 40 h of continuous operation. In this study, a unique Ni-based CeO 2 catalyst (Ni/CeO 2 -B) of haystack-like morphology was prepared for dry reforming of methane (DRM). The physicochemical properties of the synthesised catalysts were examined by FTIR, SEM, TEM, XRD, Raman spectra, XPS, BET, CO 2 -TPD, O 2 -TPO, ESR, TGA/DSC, and in situ DRIFT spectroscopy. The Ni/CeO₂-B catalyst exhibited a unique haystack-like morphology, resulting in high surface area, enhanced surface basicity, abundant oxygen vacancies, and improved Ni dispersion. The Ni/CeO₂-B catalyst exhibited excellent CO₂ and CH₄ conversions of 78% and 95%, respectively, at 800 °C, as well as excellent thermal stability for 40 h of operation. The Ni/CeO₂-B catalyst exhibited a high concentration of oxygen vacancies and enhanced basicity, which provide additional active sites for the adsorption and activation of CO₂ and CH₄ during the DRM. In situ DRIFTS spectra in combination with XPS, ESR, and catalytic results suggest that the redox-active Ni/CeO₂-B catalyst promotes CO₂ activation and improves anti-coking during DRM activity. In order to facilitate the scale-up of DRM technology, this study offers insightful information for the synthesis of advanced catalytic materials to improve syngas formation. Download: Download high-res image (420KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Huiwen Zhang,Xia Zhang,Yue Ma,Yingnan Zhao,Rui-Qi Yao,Xinying Sun,Tonghui Wang,Beibei Xiao,Gao-Feng Han,Xing-You Lang,Qing Jiang
Cyanide-free electrosynthesis converts amino acids to nitriles with >90% FE. • Low-coordinated Ni sites promote NiOOH formation for decarboxylation–dehydrogenation. • Carbon radicals induce nitrogen lone-pair delocalization, facilitating N H cleavage. • Broad amino acid scope includes challenging aromatic substrates. Leveraging biomass for organic nitrogen synthesis can reduce dependency on fossil ammonia, streamline synthetic pathways, and decrease carbon footprint and contamination. However, the conversion is chemically disfavored owing to the competition with deamination, overoxidation, and crosslink. Herein, we report a novel electrochemical synthesis route for biomass-derived amino acid oxidation, using L-alanine as the representative example to produce acetonitrile with high selectivity in the electrolyte. Upon dynamic reconstruction, defect-rich NiO anchored on O-doped carbon interacts with carboxylate groups, thereby facilitating decarboxylation. The resulting carbon radical induces partial delocalization of the nitrogen lone pair electrons, which weakens the N H bond, ultimately promoting nitrile production. The optimized electrocatalyst delivers a Faradaic efficiency of up to 92.2% together with a high acetonitrile production rate of 580.1 mmol g cat −1 h −1 and excellent stability. Moreover, our strategy has proven to be applicable to multiple α-amino acids. This work reveals the fundamental mechanism of amino acid electrooxidation to nitriles and paves the way for green and sustainable nitrogen utilization. An electrochemical strategy to convert biomass-derived amino acids into value-added nitriles using low-coordinated Ni catalysts. The process initiates decarboxylation to generate carbon-centered radical, which reorganize the local C N bonding environment and lower the barrier for C N bond formation, providing a sustainable and cyanide-free route for nitrogen valorization from renewable feedstocks. Download: Download high-res image (72KB) Download: Download full-size image
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Lingli Lv,Lingxi Xia,Haoming Wang,Xue Xia,Xia Huang
A Cu foam supported Ni Cu nanowire electrode (Ni-CuNW) was fabricated and optimized. • Ni species modulated electronic structure of Cu and redistributed surface electron. • High-efficient NO 3 − to NH 3 conversion was achieved in neutral-media conditions. • Ni-CuNW enabled ~100% NO 3 − removal with 99.5% NH 4 + -N selectivity and 95.5% NH 3 FE. • FE for NH 3 production maintained above 90% across various NO 3 − concentrations. Electrocatalytic nitrate-to-ammonia conversion has emerged as a pivotal green technology that simultaneously enables waste valorization and sustainable ammonia production, offering a promising alternative to the energy-intensive Haber-Bosch process. Herein, we reported a highly efficient Ni-decorated Cu nanowire electrode (Ni-CuNW) that exhibited remarkable electrocatalytic activity under challenging neutral media, which typically suffers from insufficient H* supply and severe competition from the hydrogen evolution reaction (HER). The optimized electrode achieved near complete nitrate removal with 99.5% NH 4 + -N selectivity and 95.5% Faradaic efficiency (FE) for NH 3 production during treatment of nitrate-laden wastewater (50 mg L −1 NO 3 − -N), and maintained an NH 3 FE of 90% even in high-concentration wastewater containing 2000 mg L −1 NO 3 − -N. An integrated reactor incorporating an in-situ ammonia recovery unit was constructed, and over 95% nitrate removal and 85% NH 3 recovery were achieved under various nitrate concentrations, demonstrating its robust practical applicability. Mechanism studies revealed that the superior performance originated from the incorporation of Ni(OH) 2 species, which modulated the electronic structure of Cu and induced surface electron redistribution. This electronic structure modulation accelerated interfacial electron transfer and strengthened the adsorption of NO 3 − and nitrogen-containing intermediates. Concurrently, Ni species incorporation selectively suppressed the competing HER at active sites, thereby endowing the Ni-CuNW electrode with exceptional FE for NH 3 production. This work presented an efficient and scalable strategy for synthesizing advanced electrocatalysts suitable for both wastewater remediation and sustainable ammonia production. Download: Download high-res image (140KB) Download: Download full-size image
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高影响因子
TRIBOLOGY INTERNATIONAL
·
2026
·
IF 7.6
Runze Wei,Junhong Jia,Rui Deng,Mengrong Tian,Xuan Ren,Zongyu Zhang,Yun Shi,Nairu He,Jie Yang
To investigate the influence of different powder addition strategies on the properties of Ag-containing lubricating coatings, NiCrAlY-Mo-Ag-Cu coatings incorporating different (Ag, Cu) powders (direct doping, core-shell structure, and powder alloyed) were fabricated via atmospheric plasma spraying. Combining characterization techniques and density functional theory calculations, the friction behavior, tribological properties, and underlying mechanisms of the three coatings were explored through constant-temperature friction tests and thermal cycling friction tests over a wide temperature range. The results indicate that the core-shell structure process helps reduce coating porosity (from 2.61% to 1.68%), but the average hardness of the coating decreased by 12.5% (230.6 HV → 201.8 HV). The alloying strategy circumvented hardness degradation, striking a balance between coating densification and mechanical robustness. At 800 ℃, a composite tribofilm comprising simple metal oxides (e.g., NiO, Cr 2 O 3 , and Al 2 O 3 ) and high-temperature lubricating phases (NiMoO 4 , Ag 2 MoO 4 , CuMoO 4 ) developed on the surface, effectively suppressing silver agglomeration and depletion. Owing to the synergy of these effects, the AgCu-alloyed coating achieved a low coefficient of friction (COF) of 0.25 at 400 ℃ and demonstrated a ∼30.9% reduction in wear rate during the 800 ℃ thermal cycling test compared to the direct-doping coating.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Jiwang Cha,Jun Guo,Yiwen Chen,Buming Chen,Zhongcheng Guo
Ni/NiFeMo-LDH Schottky heterostructure was constructed by an electro-deposition method. • Accelerated charge transfer and reconstruction boost OER/HER kinetics. • Delivers 280 mV for OER and 250 mV for HER at 100 mA·cm −2 with long-term stability. Layered double hydroxides (LDHs) are promising OER catalysts but suffer from poor conductivity, slow interfacial charge transfer, and limited stability at high current densities. Here, we couple crystalline Ni-rich domains with an amorphous/poorly crystalline Ni-Fe-Mo hydroxide/oxyhydroxide-rich layered phase to form a conductive Mott-Schottky-type heterointerfacial architecture. The shift in XPS binding energy is consistent with interfacial electron coupling and possible charge redistribution. Electrochemical impedance measurements revealed a decrease in charge transfer resistance, and in situ Raman spectroscopy independently identified potential-induced reconstruction toward Ni(Fe)OOH-related active species. The resulting electrode achieves low overpotentials of 280 mV for OER and 250 mV for HER at 100 mA·cm −2 . Under near-industrial conditions (80 °C, 30% KOH), an AEM electrolyzer operates stably for 40 h with negligible decay, demonstrating its strong practical potential and providing guidance for the design of in situ catalytic electrodes via Schottky heterojunctions. Download: Download high-res image (186KB) Download: Download full-size image
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Aleeza Javeed,Zohaib Ur Rehman,Zhengguo Chen,Jiang Youqi,Siqi Fu,Peng Ranran,Yunan Jiang,Xuexin Jiang,Changrong Xia
Zn-containing borosilicate glass-ceramic sealant is developed for LT-SOFCs. • ZnO enables a low softening temperature (~600 °C) and controlled crystallization. • Small additions of Ni-Co spinel oxide effectively strengthens the seal. • Ultra-low leakage rate of 0.0023 sccm cm −1 is maintained for 1350 h at 700 °C. • Strong interfacial bonding and minimal elemental interdiffusion ensure durability. SOFCs are attractive energy conversion devices due to high efficiency and fuel flexibility, but commercialization is limited by sealing reliability. Glass sealants must provide gas tightness, thermal expansion compatibility, mechanical robustness, and chemical stability at reduced operating temperatures. This study develops a Zn-containing borosilicate glass-ceramic modified with Ni-Co spinel for reduced-temperature planar SOFCs. ZnO lowers the softening temperature (~600 °C) and controls crystallization while maintaining CTE compatibility. The optimized seal shows hermeticity with leakage of ~0.005 sccm cm −1 over ten thermal cycles. Incorporation of 1 wt% Ni-Co improves stability, reducing leakage to 0.0023 sccm cm −1 over 1350 h at 700 °C. Thermal analysis shows Ni-Co affects intrinsic thermal properties but moderates glass fluidity, suppressing excessive flow. Microstructural and interfacial analyses confirm adhesion to YSZ and NiCo 2 O 4 -coated stainless-steel, with limited interdiffusion and no harmful reaction layers. Overall, the Zn-containing Ni-Co-modified glass-ceramic is a durable sealing solution for reduced-temperature SOFC applications. Download: Download high-res image (257KB) Download: Download full-size image
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Xiaofang Ma,Yuxin Han,Xiaxia Liu,Yan Sun,LuXia Guo,Yang Gao,Yuanyuan Tian,He Xiao
RuNi nanoclusters confined in hollow mesoporous carbon are synthesized by a template-impregnation method. • RuNi/MCS-3 delivers superior alkaline HER performance comparable to commercial Pt/C. • Formed Ru−O−Ni bridge accelerates water dissociation and optimizes H* adsorption. • Pore confinement and electronic synergy offer a strategy for advanced HER electrocatalysts. Developing efficient and stable bimetallic electrocatalysts for the hydrogen evolution reaction (HER) in alkaline media is crucial for sustainable water splitting. However, this field still faces substantial challenges. Herein, a series of hollow mesoporous carbon-confined RuNi bimetallic nanocluster catalysts (RuNi/MCS-x) were synthesized via a facile combination of the template method and impregnation strategy. Their electrocatalytic HER performance was systematically evaluated in 1 M KOH solution. Notably, the MCS-3 material, prepared at a TPOS/TEOS volume ratio of 1:1, exhibits an optimal porous structure with a large pore size of 5.64 nm and a high specific surface area of 631.34 m 2 g −1 . The interconnected porous structure, linking the internal hollow cavities to the outer surface, provides sufficient transport channels for electrolyte penetration and hydrogen release. Benefiting from these structural advantages, the RuNi/MCS-3 catalyst delivers excellent alkaline HER performance. It requires only an overpotential of 15.6 mV to achieve a current density of 10 mA cm −2 in 1 M KOH electrolyte and displays a high mass activity of 651.4 mA mg Ru −1 at an overpotential of −50 mV. In addition, RuNi/MCS-3 achieves a Faradaic efficiency (FE) close to 100%, and its turnover frequency (TOF) is comparable to that of commercial Pt/C catalysts. The superior catalytic activity originates from three synergistic factors. First, the unique Ru−O−Ni bridging structure creates abundant electron-rich oxygen sites to promote water dissociation, optimize H* adsorption, and accelerate hydrogen desorption kinetics. Second, the pore confinement of hollow mesoporous carbon facilitates uniform dispersion of RuNi nanoclusters and full exposure of active sites. Third, the Ru−O−Ni bridge facilitates electron transfer and lowers the kinetic barrier of the alkaline HER, thereby substantially boosting the overall water-splitting efficiency. This work presents a feasible innovative strategy to rationally design and fabricate high-efficiency bimetallic carbon electrocatalysts toward high-performance HER. Download: Download high-res image (142KB) Download: Download full-size image The mesoporous carbon-confined RuNi bimetallic nanoclusters (RuNi/MCS-3) construct interfacial Ru–O–Ni bridges, which induce electron redistribution and trigger hydrogen spillover to optimize hydrogen adsorption/desorption kinetics. Benefiting from the interfacial synergistic effect, RuNi/MCS-3 exhibits substantially enhanced electrocatalytic hydrogen evolution activity compared with monometallic Ru/MCS-3.
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