JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Xianyong Hong,Jinghua Li,Yubo Pan,Mingxing Shi,Mingzhu Xia,Fengyun Wang
The redox asymmetry conversion mechanism of adsorbed phosphate during thermal reconstruction remains elusive, limiting the exploitation of spent adsorbents' untapped potential. Here, we report a counterintuitive phenomenon: upon annealing phosphate-saturated CoFe layered double hydroxide (CoFe-LDH) in a reducing atmosphere, the phosphate does not decompose completely but selectively co-generates conductive cobalt phosphide (CoP) and active P O species, forming a self-supported CoP/FeCo 2 O 4 heterostructured electrode. Specifically, the metallic CoP facilitates rapid electron transport, while the P O species synergistically enhance redox kinetics and interfacial compatibility. The pivotal finding is that this in-situ phosphorus speciation challenges the homogeneity assumption inherent to conventional doping paradigms. X-ray photoelectron spectroscopy (P 2p bimodal coexistence) and transmission electron microscopy reveal that the “partial reduction–partial retention” behavior of phosphate arises from synergistic regulation by interlayer confinement effects and metal-phosphate coordination structures within the LDH precursor. Benefiting from this unique configuration, the electrode achieves an exceptional areal capacitance of 3.71 F/cm 2 at 1 mA/cm 2 in 3 M KOH, with 69.74% capacitance retention after 5000 cycles. Density functional theory calculations demonstrate that the built-in electric field at the CoP/FeCo 2 O 4 interface facilitates charge redistribution, reducing the interfacial charge-transfer resistance to 0.48 Ω·cm 2 . This study establishes “phosphorus speciation” as a new principle for concurrently optimizing electronic conductivity and redox activity, offering a paradigm for the function-oriented repurposing of phosphate-laden remediation materials into high-performance energy storage electrodes.
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ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Yichi Zhang,Fen Tao,Ruoyang Gao,Ling Zhang,Jun Wang,Guohao Du,Tiqiao Xiao,Biao Deng
Achieving nondestructive, high-precision quantitative elemental analysis at the nanoscale has long been a challenge in materials characterization. The proposed Grayscale Bayesian Elemental Quantification Analysis (GBEQA) method effectively circumvents issues such as insufficient detection depth, destructiveness, and matrix effects encountered by conventional techniques by integrating grayscale information from synchrotron radiation nano-CT with a Bayesian inversion framework. By constructing a grayscale probability model and generating probability mass functions through convolution with standard materials, GBEQA achieves unsupervised element quantification without requiring prior knowledge for the first time. The validation on FeNi alloys and Ni0.9Co0.05Mn0.05(OH)2 (NCM90 precursor) demonstrates high agreement with inductively coupled plasma atomic emission spectrometry (ICP-AES) while successfully characterizing nanoscale element distribution heterogeneities inaccessible to conventional techniques. This study establishes a novel paradigm for elemental analysis that combines nondestructive, 3D resolution, and universality, holding significant implications for advancing research on complex systems such as alloys and energy materials.
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高影响因子
ACS Applied Optical Materials
·
2026
·Vol. 4
·期 7
·2056-2066
·
IF 3.4
Xiang Cheng,Guo Junliang,Jiang Guobao,Yang Minghui,Chen Jieyi,Zhu Xuancheng,Huang Zuoqiang,Zhou Yue,Gan Yuan,Zhang Quanlong,Yu Qiang,Chen Ying
The development of high-performance
saturable absorbers
(SAs) combining
strong nonlinear optical response, robust environmental stability,
and ease of fiber integration remains critical for advancing compact
ultrafast fiber laser systems. Here, a fiber integrated SA was demonstrated
based on the high quality ternary crystal Ta 2 Ni 3 Te 5 , synthesized by chemical vapor transport and transferred
onto fiber facets via a precision dry-transfer technique. Benefiting
from its van der Waals layered structure and unique electronic topology,
Ta 2 Ni 3 Te 5 based SA exhibits a modulation
depth of 19.98% and a saturation intensity of 0.74 GW/cm 2 at 1.55 μm excitation. When incorporated into an erbium-doped
fiber laser cavity, the Ta 2 Ni 3 Te 5 –SA enables both stable dual-wavelength Q-switching and robust
mode-locking. In the mode-locked regime, the laser delivers picosecond
pulses (2.07 ps), with a repetition rate of 10.66 MHz. It is worth
noting that the output power of the pulsed laser is up to 24.6 mW,
and the signal-to-noise ratio is as high as 76.8 dB. Moreover, the
SA exhibits strong optical damage resistance and maintains stable
performance after prolonged storage, underscoring its environmental
robustness. This work establishes Ta 2 Ni 3 Te 5 as a promising nonlinear optical material for ultrafast photonics
and provides a practical pathway toward high-performance, fiber pulsed
laser sources.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 30
·40660-40671
·
IF 7.8
Jin Zhao,Yao Shunyu,Sun Chang,Zhang Chunqi,Liang Licheng,Liu Yipeng,Yang Qingqing,Liang Fei
The practical deployment of magnesium-based alloys, despite their attractive hydrogen-storage capacity and economical advantage, faces critical barriers in the form of high dehydrogenation temperatures and inadequate sorption kinetics. To overcome these barriers, a two-dimensional layered La x @Ti 3 C 2 -derived catalyst was therefore developed, which exhibits high catalytic activity toward the Mg-4Ni-2Y alloy. The Mg-4Ni-2Y + 10 wt % La 0.2 @Ti 3 C 2 composite not only lowered the onset absorption/desorption temperatures to 23.3 ° C and 265.5 ° C but also enabled the composite to achieve superior sorption kinetics, absorbing 4.80 wt % H 2 in 1 min at 150 ° C and releasing 5.16 wt % H 2 in 4 min at 350 ° C. Furthermore, the apparent activation energy (E a ) was substantially reduced to 85.22 ± 2.38 kJ/mol for the composite, thereby decreasing the dehydrogenation temperature and accelerating the kinetics. Systematic analysis suggests that the catalytic enhancement is primarily associated with highly dispersed Ti 0 species, which are proposed to act as the primary active sites for hydrogen dissociation and recombination. La decoration is suggested to serve as an electronic promoter, modulating the electronic structure of Ti sites and stabilizing the interfacial environment. This synergistic Ti-La interaction facilitates hydrogen activation and interfacial transfer without altering the intrinsic Mg/MgH 2 thermodynamics, thereby significantly accelerating hydrogen sorption kinetics.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiaxing Lu,Guangfu Qian,Yihao Xu,Guorong Wang,Yuan Yao,Ruyu Zhang,Jinli Chen,Panagiotis Tsiakaras
Lignin-derived carbon-encapsulated heterojunction promotes in-situ NiOOH formation. • Self-Supported nanoarchitecture enables mass transfer and mechanical robustness. • Lignin-derived carbon-encapsulated improves corrosion resistance. • LC@FeNi 3 /Ni 2 V 2 O 7 stable operates for 1100 h at 1500 mA cm −2 . Although Ni-based catalysts hold promise for replacing the oxygen evolution reaction with the urea oxidation reaction (UOR) in water electrolysis to energy-saving hydrogen production, their activity and long-term stability require further improvement. Herein, we developed a self-supported catalyst composed of lignin-derived carbon (LC) encapsulating a FeNi 3 /Ni 2 V 2 O 7 heterojunction (LC@FeNi 3 /Ni 2 V 2 O 7 ) to tackle these challenges. LC@FeNi 3 /Ni 2 V 2 O 7 requires low potentials of 1.22 V and 1.39 V at 10 and 1000 mA cm −2 . According to operando analysis, the UOR follows an indirect mechanism on the LC@FeNi 3 /Ni 2 V 2 O 7 surface. This reaction pathway is facilitated by the synergy between the lignin-derived carbon and the heterointerfaces, which promotes the generation of active NiOOH species and enables a lower potential than catalysts without these components. In addition, the self-supporting structure ensures efficient gas-liquid release, while the carbon layer enhances corrosion resistance, allowing it to achieve a current density of 1.5 A cm −2 at only 1.84 V under non- membrane electrode assembly conditions, with a potential decay of only 100 mV over 1100 h, demonstrating its potential for commercial applications. This work presents not only an efficient UOR catalyst but also a novel strategy for engineering lignin-derived carbon materials to achieve industrial-scale urea-assisted water electrolysis. Download: Download high-res image (192KB) Download: Download full-size image
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ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Yongjie Jiang,Yankun Wang,Honggang Zhang,Yilu Wu,Changsheng Su,Bingqian Guo,Yicheng Liu,Mingyuan Sun,Chunling Li,Di Cai
In this study, corn stover residue (CSR), rich in lignin, was collected from the outlet waste stream of a lignocellulosic ethanol demonstration plant and was valorized into highly depolymerized bio-oil by hydrogen-transfer reductive catalytic depolymerization (RCD), in which Raney Ni served as a catalyst and 2-PrOH served as a hydrogen donor. The primary reactions involved in the hydrogen-transfer RCD of the CSR were investigated. It showed hydrogenolysis, hydrogenation, hydrodeoxygenation, demethoxylation, decarboxylation, and dealkylation were involved in the RCD of CSR. Results indicated a highest monomeric lignin yield of 8.31 wt % was obtained on conditions of 220 °C, 500 rpm, and 3 h. This work provides a feasible example for exploiting all the chemical compositions in lignocelluloses, by the combination of the traditional but mature “carbohydrate-first” strategy and the emerging but not yet commercialized “lignin-first” strategy.
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CATALYSIS LETTERS
·
2025
·Vol. 155
·期 11
·1-15
·
IF 2.4
Yang Dawei,Hu Yanan,Qi Zhiwei,Li Qiaoling,Yu Chengcheng
The world is currently facing the dual challenges of energy scarcity and environmental degradation. As a highly promising carrier of clean and renewable energy, hydrogen has attracted significant attention, with high-efficiency water electrolysis recognized as a key pathway for the large-scale production of green hydrogen. Among various electrocatalysts, transition metal Co-V-based materials demonstrate remarkable potential. In this study, we successfully synthesized a highly stable amorphous Co-V-B catalyst on a nickel foam (NF) substrate by constructing a Co-V bimetallic system followed by boron doping to enhance its performance. Electrochemical evaluations indicated that the catalyst delivers superior Hydrogen evolution reaction (HER) performance, requiring only 47 mV overpotential to attain a current density of − 10 mA cm −2 , along with a low charge transfer resistance of 1.14 Ω. Additionally, the catalyst demonstrated remarkable durability, sustaining stable HER activity during 16 h of continuous chronopotentiometric (CP) operation. This study systematically explores the preparation of Co-V/NF catalysts and highlights the significant impact of boron incorporation on improving catalytic performance, providing meaningful guidance for developing advanced electrocatalysts for water splitting applications. Graphical
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shaoshuang Zhu,Kaiyu Liu,Lu Pan,Huimin Jiang,Jianjian Lin
Tin (Sn), owing to its unique electronic structure and inherent suppression of the hydrogen evolution reaction (HER), has garnered significant attention as an electrocatalyst for nitrogen reduction reactions (NRR). Synthesizing high-performance Sn-based heterostructure catalysts, however, remains a substantial challenge. In this study, we employ a combination of interface engineering and doping strategies to introduce iron (Fe) into the SnS 2 /SnO 2 heterostructure for the first time and develop a novel Fe-SnS 2 /SnO 2 @NF catalyst, which represents the first application of such a catalyst in NRR. Furthermore, density functional theory (DFT) calculations reveal that the introduced Fe promotes charge redistribution at the SnS 2 /SnO 2 interface, thereby enhancing the interfacial electric field. This amplified electric field plays a key role in activating orbital interactions and regulating electron distribution, thereby greatly facilitating the conversion of N 2 to NH 3 via a distal binding mechanism. This effect has been rarely reported in previous studies. Notably, the Fe-SnS 2 /SnO 2 @NF catalyst achieves an ammonia yield of 39.05 ± 2.27 μg h −1 cm −2 and a Faradaic efficiency (FE) of 29.52 ± 0.71% at room temperature, surpassing the NRR activity of other Sn-based materials. This work represents a significant advancement in understanding the role of doping strategies in enhancing the interfacial electric field of heterostructures and provides valuable insights into their effectiveness for nitrogen fixation.
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FUEL
·
2025
·
IF 7.5
Zhuxian Gao,Caihu Li,Jianli Zhang,Xiude Hu,Jingjing Ma,Qingjie Guo
The capture and catalytic performance in integrated CO 2 and utilization (ICCU) potentially contributes to reduce CO 2 emissions with low cost and high efficiency. Breaking through the limitations of conventional dual-functional materials (DFMs). Herein, Fe-CaO/NF self-assembled with nickel foam (NF) as template is designed and prepared via hydrothermal method. CaO is anchored on the Ni-foam skeleton, and Fe-Ni bimetallic sites within the CaO matrix establishes dual-active centers synergizing CO 2 chemisorption and activation. The stability and activity stability of CO 2 capture and in-situ conversion were improved, CO 2 capture capacity is 12.8 mmol/g, CO yield is 9.33 mmol/g, ∼80 % CO 2 conversion is achieved, and 100 % CO selectivity is obtained. It shows good cycle stability and high activity in 12 cycles. The synergistic effect of Fe and Ni on CO 2 adsorption and conversion was confirm by DRIFTS. The interaction between CaO and Fe is weakened by Ni, while the interaction with Fe promotes the conversion of CO 2 . In comparison, the stability and activity of the without O 2 -containing cycle are higher than those of the O 2 -containing. O 2 has a negative effect, leading to competitive adsorption between CO 2 and H 2 O in the CO 2 capture process. The H 2 O molecular layer is formed on the surface of the rod-like structure, and the reduction of the active phase is interference, resulting the regeneration of CaO was decline.
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ACTA MATERIALIA
·
2026
·
IF 10.7
Hongxiang Chen,Shiyu Li,Xiaochun Wen,Jing Zhang,Bing Xiao,Yunfeng Su,Hengzhong Fan,Yongsheng Zhang
Intercalation effectively enhances the thermoelectric performance of layered semiconductors. However, conventional strategies employing a single metal element at low concentrations yield limited improvements, typically failing to achieve a zT value greater than 0.5 in intrinsic transition metal dichalcogenides (TMDCs). Here, we propose a high-entropy trace intercalation strategy by incorporating multi-component metal atoms into TiS 2 . Remarkably, a high thermoelectric figure of merit ( zT ≈ 0.7 at 723 K) is realized, attributed to the simultaneous optimization of thermal and electronic properties: reduced total thermal conductivity κ and high power factor ( PF ) with enhanced weighted mobility. Key characteristics at the optimized intercalation content ( x = 0.02) include minimized lattice thermal conductivity ( κ L ), sound velocity, and elastic moduli. The outstanding performance stems from entropy-engineering, where optimized intercalation (∼2%) induces a substantial entropy enhancement by 33%, generating pronounced lattice disorder and anharmonicity. Critically, this strategy avoids the increase in κ L typically associated with higher intercalant concentrations while maintaining low effective charge doping, thereby minimizing κ . Meanwhile, favorable charge transfer from the intercalation layer to the conduction layers, along with entropy-driven band renormalization, enhances the electrical transport properties. This work establishes high-entropy trace intercalation as a universal paradigm for decoupling electronic and thermal transport in layered thermoelectrics.
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Journal of Energy Storage
·
2026
·
IF 9.8
Fazal Badshah,Faiz mahmood,Dong-Yan Lu,Muhammad Afzaal,Muhammad Imran,Sabirov Sardor,Ruziyev Islambay Samandarovich
The cyclic life, rate performance, specific energy, and electrochemical sensing of electrode materials can be enhanced by tuning their nanostructures and compositions. Herein, the chemical vapor deposition technique was used to make direct deposition of MoS 2 nanosheets and Ni 3 S 2 /MoS 2 nanospheres on hierarchical nickel foam. The evaporated Ni 3 S 2 and MoS 2 achieved different energies, resulting in their different growth of diffraction planes with different peak intensities. The nanosheets and nanospheres were deposited successfully, which could render good surface area ∼50 m 2 g −1 , 128 m 2 g −1 , and pore ∼6.25 nm and 25 nm, respectively. The deposited MoS 2 and Ni 3 S 2 /MoS 2 electrodes provided a commendable capacitance of 1045 Fg −1 and 1828 Fg −1 at 1 Ag −1 , good cyclic life retaining 73% and 89% of their initial capacitance after 10,000 cycles with columbic efficiency of 85% and 98%. Besides, the asymmetric supercapacitor disclosed outstanding capacitance of 943 Fg −1 , specific energy of 297 Whkg −1 , with specific power of 2100 Wkg −1 at 3.5 Ag −1 and cyclic stability retaining 89.14% after 10,000 cycles at 35 Ag −1 . In electrolytic glucose oxidation, the Ni 3 S 2 /MoS 2 electrode also exhibited diffusion process contributions of ∼98–95% to the overall response at 5–30 mVs −1 , with surface process contributions of ∼2–5%.
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CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Wenhao Li,Zhigao Ma,Liping Pan,Jianfei Xu,Cuiliu Han,Shifeng Luo,Jiuxing Zhang,Jingwen Zhang,Yan Wang
The effect of Ni addition on the spark plasma sintering (SPS) densification and properties of LaB 6 is investigated in this study. The results show that the Ni addition not only facilitates the SPS densification of LaB 6 but also enhances its mechanical and thermionic emission properties. Under the conditions of 1800 °C sintering temperature, 50 MPa applied pressure, and 5 min holding time, the LaB 6 -2wt%Ni sample achieves a relative density of 97.5 %, while the pure LaB 6 bulk only reaches 83.4 %. Microstructural analysis reveals that the LaB 6 -2wt%Ni sample has a two-phase microstructure, with the NiB secondary phase mainly distributed along the grain boundaries of the LaB 6 matrix, and the average grain size of LaB 6 grains is 10.11 ± 6.30 μm. The effects of crack deflection and bridge induced by Ni addition enable the LaB 6 -2wt%Ni sample to exhibit an indentation fracture toughness of 1.14 ± 0.04 MPa m 1/2 , nearly twice that of 0.59 ± 0.05 MPa m 1/2 for the SPSed LaB 6 bulk with the same density. At the operating temperature of 1600 °C, the LaB 6 -2wt%Ni sample exhibits a slightly higher thermionic emission current density and lower effective work function compared to the dense LaB 6 bulk. This study provides a novel strategy for the fabrication of dense LaB 6 , and the LaB 6 -Ni composite shows great potential as a thermionic cathode material.
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