Energy Materials
·
2026
·Vol. 6
·期 8
·N
·
IF 11.9
Jingjing Qie\u003Csup\u003E1,\u003C\u002Fsup\u003E,Huiyue Sun\u003Csup\u003E1,\u003C\u002Fsup\u003E,Shuang Geng\u003Csup\u003E1,\u003C\u002Fsup\u003E,Yongqi Shang\u003Csup\u003E1\u003C\u002Fsup\u003E,Qunzhi Huang\u003Csup\u003E1\u003C\u002Fsup\u003E,Jishi Wei\u003Csup\u003E1,2,\u003C\u002Fsup\u003E,Ke Chen\u003Csup\u003E1\u003C\u002Fsup\u003E,Taifeng Liu\u003Csup\u003E3\u003C\u002Fsup\u003E,Shuxi Dai\u003Csup\u003E1,\u003C\u002Fsup\u003E,Wuxing Hua\u003Csup\u003E1,4,\u003C\u002Fsup\u003E,Zhen Zhou\u003Csup\u003E4\u003C\u002Fsup\u003E
Developing an effective electrocatalyst to regulate the kinetics of the sulfur redox reaction is essential for inhibiting polysulfide shuttling in Li-S batteries. Here, the electronic structure of CoTe, modulated by cation doping, is systematically investigated to elucidate how orbital hybridization optimizes sulfur redox electrocatalysis. Among the cation-doped CoTe compounds, the introduction of Ni dopants results in the most significant shift of the p-band center of CoTe (Ni-CoTe) towards the Fermi energy level, which facilitates the formation of numerous Te vacancies on the CoTe surface. This structural configuration endows CoTe with a multitude of active sites that bind polysulfide intermediates, lowering the activation energy (Ea) of the sulfur reduction reaction, specifically reducing the Ea for the conversion of lithium polysulfides to Li2S from 0.73 eV to 0.65 eV. As a result, the Li-S battery with Ni-CoTe catalyst delivers exceptional cyclability, with a low-capacity decay of 0.049% per cycle over 1,000 cycles at 2.0 C. Moreover, an initial areal capacity of 13.5 mAh cm-2 at 0.02 C is achieved with a high sulfur loading (10.0 mg cm-2) and a low electrolyte-to-sulfur ratio (5.0 µL mg-1). These findings will provide fundamental insights into orbital-level catalyst design principles for advanced sulfur electrochemistry.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Mingzhe Li,Yunlong Wang,Xin Zhang,Lei Zhou,Fengchun Zheng,Kepi Chen,Nian Ran,Yuzhen Lv,Wei Zhou
Developing iron-free transition-metal based catalysts to overcome ion-leaching degradation is still a critical challenge due to their inherent low activity and poor electron transfer characteristics for oxygen evolution reaction (OER). Herein, an iron-free catalytic material integrating amorphous Ce-doped NiOOH with Ni nanocrystals was synthesized via a one-step electrodeposition method, achieving scalable fabrication of a uniform anode over 600 cm 2 . It shows remarkably low overpotentials of 190 mV and 332 mV to achieve 10 and 1000 mA cm −2 in 1 M KOH, respectively. Moreover, it maintains 98.7 % activity retention after 1000 h of continuous operation at 1000 mA cm −2 . XPS, XANES, in-situ Raman spectroscopy and density functional theory (DFT) calculations demonstrate that Ni nanocrystals significantly enhance the interfacial and bulk charge transport in NiOOH, while Ce doping substantially promotes both the pre-oxidation process and OER kinetics. This work provides insights for designing iron-free catalytic materials with high alkaline OER performance.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Kailin Fu,Weijian Chen,Jianmin Liu,Jian Liang
Perovskite oxides are increasingly recognized as cost-effective catalytic materials for facilitating both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) at the air-electrode electrode of Zn-air batteries (ZABs) and fuel cells. In this study, we have employed a non-hydrolytic sol-gel (NHSG) technique to synthesize La 0.8 Sr 0.2 Co 0.8 X 0.2 O 3-δ (X = Fe, Mn, and Ni) perovskite nanoparticles at a low temperature of 600 °C. Among these perovskite oxides, La 0.8 Sr 0.2 Co 0.8 Fe 0.2 O 3-δ (LSCFO) exhibited the highest specific surface area of 12.68 m 2 g −1 and possessed the greatest number of oxygen vacancies. Specifically, it achieved a higher half-wave potential of 0.657 V for ORR. Meanwhile, it exhibited a lower OER overpotential of 418 mV at a current density of 10 mA cm −2 , along with the smallest ΔE value of 0.991 V. When utilized as an air electrode catalyst for ZABs, LSCFO exhibits a high peak power density of 152.2 mW cm −2 and remarkable long-term cycling stability (100 h at 2 mA cm −2 ), which are close to the performance metrics of commercial Pt/C + RuO 2 catalysts. This study demonstrates the potential to enhance the bifunctional catalytic activity of LaCoO 3 -based perovskite air electrodes for ZABs through a straightforward doping approach within a NHSG process.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Zengkun You,Kai Ou,Tian Tang,Yajing Cui,Wenting Zhang,Yuxiang Ni,Yudong Xia,Hongyan Wang
Under the background of sustainable energy development, the development of efficient, stable and low-cost electrocatalysts to improve electrochemical performance has become a research hotspot in the field of energy conversion. In this work, upright, one-fold and oblique Ni nanorods were designed and grown on Ti 3 C 2 T x MXene nanosheets via glancing angle deposition technique of physical vapor deposition. For the hydrogen evolution reaction, the composite Ti 3 C 2 T x @upright exhibited a low overpotential of only 131 mV@10 mA/cm 2 , along with excellent 24 h stability in 1 M KOH. Its excellent performance is mainly attributed to the high porosity of the upright nanorods, the fast electron transport channels provided by Ti 3 C 2 T x MXene, and the stable interface structure. This research provides new ideas for constructing high-performance electrocatalytic catalysts and achieving efficient electrocatalytic conversion in sustainable energy systems.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yadi Wang,Jingang Zhao,Taoyang Zou,Yuekun Jing,Yixuan Song,Guanchao Wang,Fang Liu,Guofei Jiang
In order to address the issue of air pollution caused by the volatilization of VOCs in oilfield mud storage tanks and further reduce the energy consumption associated with traditional thermal oxidation technology, this study employs a photothermal synergistic catalytic oxidation method for the treatment of oilfield VOCs. A series of Ni/α-MnO 2 catalysts doped with varying nickel contents were synthesized via the hydrothermal method using transition metals, with propane selected as the representative pollutant. The incorporation of nickel enhances the adsorption capacity of O 2 to a certain extent. Simultaneously, it increases the competitive adsorption intensity of O 2 in the presence of coexisting H 2 O and O 2 , thereby exhibiting superior catalytic oxidation performance for propane. Compared to the single-component α-MnO 2 material (T 90 = 228 °C), the 40 %Ni/α-MnO 2 composite catalytic material showed excellent degradation ability for propane (T 90 = 206 °C) and good long-term stability. Furthermore, based on density functional theory (DFT) calculations, a plausible mechanism for propane removal was proposed. Consequently, this study offers novel insights into the design and synthesis of efficient catalysts and the degradation of VOCs.
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CATALYSIS LETTERS
·
2026
·Vol. 156
·期 3
·75
·
IF 2.5
Huang Haiyun,Chen Lungang,Zhang Xinghua,Zhang Qi,Zhuang Xiuzheng,Ma Longlong
Effective utilization of lignocellulosic biomass as value-added fuels and chemicals is of great significance for achieving the dual goals of sustainable biorefinery and carbon neutrality. Here, Ni-WOx@C catalysts were synthesized for efficiently catalytic conversion of cellulose into ethylene glycol (EG). The catalyst was prepared through a one-step pyrolysis method by using citric acid and SiO 2 as the carbon source and structural template, respectively. A series of controlled experiments demonstrated that the pyrolysis temperature and the particle size of the SiO 2 template significantly affected the physicochemical properties of the catalyst, including the surface morphology, active sites provided by the loaded metals, and the distribution of Lewis acid sites. The optimized catalysts of Ni-WOx@C 600−2 , which was prepared by the pyrolysis at 600 °C with a 2 μm SiO 2 template, delivered the best performance characterized by its high specific surface area (124.86 m 2 /g), well-defined pores, as well as the cooperation between metallic species and Lewis acid sites. Under the optimized reaction conditions (220 °C, 4 MPa H 2 , 3 h), this as-prepared catalyst achieved nearly complete cellulose conversion (> 99%) and EG yield of 60.1%. Generally speaking, the design of Ni-WOx-based catalyst provides new insight for effective catalysis and has considerable application potential in cellulose conversion. Graphical
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Mingnv Guo,Yulin Chen,Jiahao Liu,Jiaqi Qiu,Wenjing Wang,Zhongqing Yang
This study employs a Cu–Ni co–doping strategy to construct a Bi 2 MoO 6 photothermal synergistic catalyst, achieving highly efficient conversion of CO 2 reduction. Under ultraviolet–visible (UV–Vis) xenon lamp irradiation and 200 °C external heating conditions, the optimal sample (3Cu-6Ni-Bi 2 MoO 6 ) exhibited CO and CH 4 yields of 293.16 μmol·g −1 and 98.43 μmol·g −1 respectively, within 4 h, representing 6.8-fold and 5.3-fold increases compared to the undoped sample. The significant enhancement in CO 2 conversion activity can be attributed to the following factors: (1) Co-doping with Cu 2+ and Ni 2+ induces lattice distortion and oxygen vacancy formation, generating defect energy levels near the valence band edge. This reduces the bandgap to 2.1 eV, thereby broadening the visible light absorption range; (2) Oxygen vacancy defects provide highly efficient CO 2 adsorption and activation sites; (3) Doping with Cu and Ni enhances the separation and transport efficiency of photogenerated carriers.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Yingying Qian,Jianhai Wang,Yuesong Shen
Heterojunction engineering has garnered significant attention in photocatalysis as an effective strategy to address the rapid carrier recombination dynamics in semiconductor photocatalysts. The core challenge in constructing high-performance heterojunction systems lies in establishing optimized interfacial connections to achieve directional charge carrier migration. This study proposed a temperature-regulated band engineering strategy, through precise control of Ni-MOFs growth temperature and integration with WO 3-x possessing exceptional photothermal conversion capacity, to successfully construct an efficient Z-scheme heterojunction system. When the synthesis temperature of the Ni-MOF reached 140 °C, its conduction band negatively shifted to −1.2 eV (vs. NHE), resulting in a well-matched Z-scheme heterojunction with WO 3-x . The optimized 140-Ni-MOF/WO 3-x heterojunction demonstrated remarkable enhancement in charge separation efficiency while preserving strong redox capabilities through the Z-scheme charge transfer pathway. Under mild gas-solid reaction conditions (H 2 O as electron donor), the optimized catalyst exhibited excellent CO 2 reduction performance, achieving a CO production rate of 111.17 μmol·g −1 with 96.92 % selectivity. The temperature-depended modulation strategy for MOF electronic band structure proposed in this study paved the way for constructing efficient MOF-based photocatalysts.
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Materials Today Energy
·
2026
·
IF 8.6
Yakai Hao,Mingqiu Bao,Huijin Chen,Yuchuan Zhu,Ruoxi Yang,Ruirui Yue,Jinbing Shu,Jingkun Xu
Catalysts with high-efficient performance, high durability and low cost are still urgently needed to promote the wide application of direct alcohol fuel cells (DAFCs). This work prepared a PdNi/PPy composite by dispersing Ni-doped Pd nanoparticles on coarse polypyrrole (PPy) granules via facile interfacial redox and polymerization. The optimized PdNi/PPy composite possesses a porous morphology and uniform dispersion, which are key for achieving performance synergistic optimization in alcohol oxidation reactions (AORs). Specifically, for ethylene glycol oxidation (EGOR), the PdNi/PPy achieves mass activity (MA, 5577.2 mA mg Pd −1 ), specific activity (SA, 32.3 mA cm −2 ), and intrinsic activity (TOF, 6.8 s −1 ), which are 7.9, 3.0 and 2.7 times those of commercial Pd/C, respectively. It also exhibits higher activity for ethanol and methanol oxidation compared to other catalysts. Characterizations demonstrate that the synergy between Ni-doped Pd and conductive PPy significantly enhances catalytic properties. The electronic structure of Pd is optimized via Ni-doping induced d-band center modulation and efficient interfacial charge transfer through heterojunction formation. Additionally, the PPy support facilitates uniform dispersion and maximizes active site exposure. This work can offer meaningful insights for the development of advanced anode catalysts by effective doping of active metals and further strengthening of the carrier effects for DAFCs.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Ruibin Xiong,Xiaohua Cao,Xingfu Li,Miao Lin,Dedong He,Yubing Li,Jichang Lu,Yongming Luo
Low-temperature CO 2 methanation efficiently enables efficient conversion of CO 2 into methane under mild conditions, presenting substantial potential for enhanced energy efficiency and economic feasibility. However, achieving highly efficient low-temperature CO 2 activation remains a critical challenge due to inherent kinetic constraints. In this study, the inverse-supported Ce/Ni catalyst (11 mol% Ce/Ni) was synthesized, which achieved 82% CO 2 conversion and nearly 100% CH 4 selectivity under photothermal synergy at 220 °C (300 W xenon lamp, 300–2500 nm, 1.5 W·cm −2 ), outperforming most conventional nickel-based catalysts. Moreover, the catalyst exhibited outstanding long-term stability, with only an 8% activity loss after 100 h of continuous operation. This superior performance was attributed to its CeO 2 -Ni interfacial configurations and abundant oxygen vacancies. In situ diffuse reflectance infrared Fourier transform spectroscopy analysis revealed that the CO₂ methanation over this catalyst proceeds via a dual-intermediate pathway involving CO* and HCOO*, with photothermal synergy significantly accelerating the intermediate conversion without altering the intrinsic reaction pathway. This study establishes an innovative strategy for designing low-temperature and high-performance CO 2 methanation catalysts via the integration of an inverse Ce/Ni configuration with photothermal synergy.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Yinze Yang,Pengxiao Wei,Yan Du,Shiyu Huang,Dongyang Li,Haiyang Cheng,Fengyu Zhao
The sustainable synthesis of primary amines from renewable biomass is a key goal of green chemistry. Reductive amination of furfural (FAL), a representative biomass platform molecule, provides a direct route to furfurylamine (FAM), yet noble-metal catalysts remain dominant in this field, limiting large-scale application due to high cost and scarcity. Herein, we report non-noble Ni/HZSM-5 catalysts with tunable SiO 2 /Al 2 O 3 ratios that achieve up to 99% yield of FAM with a high generation rate (10.8 mmol FAM mmol Ni −1 h −1 ) under mild conditions (90 °C, 1 MPa H 2 , 0.8 MPa NH 3 ). Mechanistic studies reveal that the synergistic interface between metallic Ni and Brønsted acid sites facilitates hydrogen activation and spillover, enhances imine adsorption, and stabilizes gem- diamine and is beneficial for its ammonolysis. The catalyst also demonstrates excellent recyclability and broad substrate scope, affording >90% yields of primary amines for the reductive amination of the various aldehydes and ketones. This work provides mechanistic insights into Brønsted acid–metal synergy and establishes a sustainable, cost-effective strategy for the green synthesis of primary amines.
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MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
·
2024
·Vol. 76
·期 2
·214-225
·
IF 1.6
Xuyan Guo,Zhuangzhuang Xiong,Guixiang Wang,Fuqiu Ma,Mingbo Ji,Ruizhi Wu
This study developed a green and efficient surface protection method for Cu–Ni alloys. A zinc dibenzyl dithiocarbamate film was prepared on the surface of electrodeposited Cu–Ni alloys using the self-assembly method to improve the material's corrosion resistance in seawater. The influence of zinc dibenzyl dithiocarbamate concentration and self-assembly time on the corrosion resistance of the self-assembled films was investigated through electrochemical testing. The findings revealed that at a zinc dibenzyl dithiocarbamate concentration of 10 mmol/L and a self-assembly time of 20 min, the self-assembled film exhibited the most robust corrosion resistance, achieving a maximum corrosion inhibition efficiency of 97.70%. The self-assembly and adsorption mechanism of zinc dibenzyl dithiocarbamate were explored using molecular dynamics simulations and adsorption isotherms. The protective effect of self-assembled films was visually observed through salt spray testing. Zinc dibenzyl dithiocarbamate self-assembled film technology has high application prospects in the field of marine anti-corrosion.
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