FUEL
·
2025
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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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高影响因子
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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高影响因子
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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高影响因子
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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高影响因子
ACTA MATERIALIA
·
2026
·
IF 9.3
Ka Wang,Qirui Wei,Ruilin Guan,Zhigang Zhang,Jiawei Zhang,Hengdong Ren,Wenqing Wei,Yuxiang Yan,Haizeng Song,Jingyi Han,Peng Zhan,Xianghong Niu,Shancheng Yan,Xinglong Wu
High-efficiency and low-cost oxygen evolution reaction (OER) catalysts are essential for advancing water electrolysis technologies. Transition metal thiophosphates (TMPSs) have garnered considerable interest in the OER field due to their ability to modulate the electronic states of active atoms through surface defect engineering. In this study, monolayer theoretical calculations reveal that the interaction between adjacent single-double sulfur vacancies (S-DSVs) significantly alters the electronic structure of phosphorus atoms, thereby tuning the binding strength with reaction intermediates and effectively lowering the energy barrier of the rate-determining step. As a result, S-DSVs outperform isolated single sulfur vacancies (SSVs) and double sulfur vacancies (DSVs). Single-layer FeNiP 2 S 6-x (SL-FeNiP 2 S 6-x ) catalysts with uniformly distributed S-DSVs were successfully synthesized via a mild and selective etching process using B(OH) 3 . Electrochemical measurements demonstrate that SL-FeNiP 2 S 6-x with an optimized S-DSV concentration delivers excellent OER performance, achieving a low overpotential of 171 mV at 10 mA cm -2 and a Tafel slope of 38 mV dec ‑1 in 1 M KOH—surpassing most reported iron/nickel-based OER catalysts. This work introduces a novel strategy for enhancing electrocatalytic activity by precisely controlling the position and distribution of sulfur vacancies through controllable etching.
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高影响因子
ENERGY
·
2026
·
IF 9.4
Hui Wan,Chen-Xiang Zhang,Chen-Le Peng,Jian-Hang Nie,Ming-Hua Xian,Zi-Xuan Yang,Lei Li,Yang Liu,Zhen Peng,Shi-Yan Ning,Guang-Dong Liu,Han Chen,Gui-Fang Huang,Wei-Qing Huang
Crystalline-amorphous heterointerfaces, enriched with unsaturated coordination sites and tunable electronic structures, hold great potential for accelerating the hydrogen evolution reaction (HER). However, conventional synthesis strategies provide little control over their density and spatial distribution. Here, by tailoring the Fe composition in NiFe x P, we achieve dynamic phase evolution that drives extensive dissolution-redeposition of Fe 2 P domains, producing dense defect-rich, sub-nanometer amorphous NiFeOOH on NiFe x P (NiFeOOH@NiFe x P). This process enables precise regulation of interface density and establishes intimate crystalline-amorphous junctions. Density functional theory calculations reveal that such interfaces synergistically activate a dual-pathway mechanism: amorphous NiFeOOH reduces the water dissociation barrier to 0.834 eV, while crystalline NiFe x P weakens H* binding via d-band modulation, jointly overcoming the kinetic bottleneck. As a result, the activated NiFeOOH@NiFe 0.2 P catalyst exhibits an ultralow overpotential (only 20 mV at 10 mA cm -2 ), a low Tafel slope of 35.86 mV dec -1 , and remarkable durability (20 mA cm -2 for over 60 h). This work highlights interface-density engineering as a powerful route to break the kinetic bottleneck of alkaline HER.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Feng Xu,Hongjian Zhang,Edison Huixiang Ang,Yisha Wang,Tianyang Cui,Yufei Lu,Zhentao Nie,Haoyang Wang,Wei Yang,Jixin Zhu
Porous silica-based ceramics (PSCs) are widely utilized in diverse fields such as 5G smart devices, biomedicine, insulation, catalysis, and energy storage. Traditional methods for producing PSCs, such as sol-gel processes, sacrificial templates, chemical foaming, and solution spinning, are hampered by high temperatures, lengthy procedures, and complex steps, leading to significant energy consumption and environmental pollution. A novel Joule carbothermal chemistry technique has been developed for the rapid synthesis of porous ceramics materials, creating high-quality PSCs within 20 s. The intrinsic mechanisms of in-situ structural evolution and porosity formation were thoroughly studied. The resulting PSCs demonstrate exceptional thermal insulation properties, forming an effective thermal barrier that maintained a backside temperature as low as 63 °C when the front side was exposed to a 1300 °C flame. Additionally, various application scenarios for these PSCs are highlighted, notably improving the fire resistance and thermal insulation of lithium-ion batteries, thus paving the way for expanded ceramic production and broader applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Shujing Zhao,Guoshun Gao,Wenjia Long,Jiyan Wang,Xinyan Luo,Lihua Chen
Solar energy, as a renewable and clean energy source, is utilized to obtain freshwater and power generation, serving as a sustainable solution to address water scarcity and power shortages. This study proposes a strategy for power generation based on salinity gradients and designs an inclined composite evaporator. The evaporator features a nickel foam substrate functionalized through cross-linking of sodium alginate (SA) and tannic acid (TA) with trivalent iron ions (Fe 3+ ), enabling efficient electricity generation and freshwater production, named as SA/TA-Fe@Ni. (“Fe” indicates trivalent iron ions (Fe 3+ ) crosslinking) The TA-Fe 3+ coordination complex formed in situ on the evaporator surface appears black and exhibits excellent broad-spectrum light absorption capability. The evaporator is designed with an inclined configuration, which can significantly enhance the water transport performance. The enhanced evaporation flux establishes a stable salinity gradient at the interface, which constitutes the core driving mechanism for salinity gradient power generation. The inclined SA/TA-Fe@Ni evaporator achieves an evaporation rate of 2.14 kg•m −2 •h −1 under standard sun irradiation (one sun). It simultaneously demonstrates excellent seawater desalination and wastewater purification, while generating an open-circuit voltage of 83.7 mV. The system demonstrates outstanding salt tolerance, stability, durability, and environmental adaptability, fully demonstrating the potential of practical applications.
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高影响因子
JOURNAL OF CATALYSIS
·
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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JOURNAL OF CHEMICAL RESEARCH
·
2023
·
IF 1.4
Mengyuan Tian,Lixiang Zhang,Lijing Gao,Guomin Xiao
[2.2]-Paracyclophane derivatives have been promising platforms for applications in biology and materials science. To access pure derivatives thereof, a safe and non-toxic synthetic method for 4-n-propyl-[2.2]-paracyclophane is developed via a microwave-assisted and NH2NH2/KOH reduction route. We introduce microwave-assisted acylation for a synthesis that successfully improves the yield and reduces the reaction time. Notably, an exploration of the length and number of the alkyl chains on the [2.2]-paracyclophane ring did not significantly affect the outcome of this reaction. We synthesized 4-n-butyl-[2.2]-paracyclophane and 4,12-dipropyl-[2.2]-paracyclophane via our protocol with high yields. The regioselectivity of the second electrophilic substitution on 4-n-propyl-[2.2]-paracyclophane occurs at the para position of the less substituted phenyl ring.
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高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 6
·994
·
IF 5.3
Wei Dong,Qin Zhou,Wangqiang Shen,Le Yang,Peng Jin,Xing Lu,Yongfu Lian
Soot-containing terbium (Tb)-embedded fullerenes were prepared by evaporation of Tb4O7-doped graphite rods in an electric arc discharge chamber. After 1,2,4-trichlorobenzene extraction of the soot and rotary evaporation of the extract, a solid product was obtained and then dissolved into toluene by ultrasonication. Through a three-stage high-pressure liquid chromatographic (HPLC) process, Tb@C82(I, II) isomers were isolated from the toluene solution of fullerenes and metallofullerenes. With the success of the growth of cocrystals of Tb@C82(I, II) with Ni(OEP), the molecular structures of Tb@C82(I) and Tb@C82(II) were confirmed to be Tb@C2v(9)-C82and Tb@Cs(6)-C82, respectively, based on crystallographic data from X-ray single-crystal diffraction. Moreover, it was found that Tb@C82(I, II) isomers demonstrated different packing behaviors in their cocrystals with Ni(OEP). Tb@C2v(9)-C82forms a 1:1 cocrystal with Ni(OEP), in which Tb@C2v(9)-C82is aligned diagonally between the Ni(OEP) bilayers to form zigzag chains. In sharp contrast, Tb@Cs(6)-C82forms a 2:2 cocrystal with Ni(OEP), in which Tb@Cs(6)-C82forms a centrosymmetric dimer that is aligned linearly with Ni(OEP) pairs to form one-dimensional structures in the a–c lattice plane. In addition, the distance of a Ni atom in Ni(OEP) to the Cs(6)-C82cage is much shorter than that to the C2v(9)-C82one, indicative of a stronger π-π interaction between Ni(OEP) and the C82carbon cage in the cocrystal of Tb@CS(6)-C82and Ni(OEP). Density functional theory calculations reveal that the regionally selective dimerization of Tb@CS(6)-C82is the result of a dominant unpaired spin existing on a particular C atom of the CS(6)-C82cage.Keywords:metallofullerene;terbium;cocrystals;centrosymmetric dimer;unpaired spin
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PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Handong Jiao,Mengjun Liu,Zhe Wang,Manpeng Lin,Zhaoliang Qu,Jianxun Song,Shuqiang Jiao
Molten salt electrorefining is expected to be a powerful technology for upcycling titanium scrap because of its robust ability of removing impurities. However, realizing the stable operation of electrorefining, for example, the current efficiency of the anode and the cathode is still a key challenge from the viewpoint of industrial applications. Here, we study titanium’s anodic dissolution and cathodic deposition processes via a direct three-dimensional visualization method based on a computed tomography technology under high-temperature operational conditions. Real-time quantitative results show that the current efficiency is obviously affected by the concentration of titanium ions in the melt. Visual analysis of the local dissolution rate and the curvature of the titanium anode at different electrolysis stages reveals the kinetic origin of the concentration-induced current efficiency changes, which arise from the priority of the side reactions being dependent on the concentration of titanium ions. Finally, we show that employing the high concentration and single existence forms of titanium ions is an effective strategy to prevent the side reactions and improve the current efficiency. This work provides a fresh and fundamental understanding of the side reactions occurring at the interface of electrodes and is significant for facilitating the stability of electrorefining engineering of titanium.
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