JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Zhuoao Li,Pengbo Ding,Lixiu Guan,Dan Xing,Qitao Lian,Yingxuan Cao,Zixuan Zhang,Shuo Zhang,Junguang Tao
Amid the pressing need for sustainable hydrogen production, developing high-performance electrocatalysts for alkaline electrolysis using nickel-based materials has become increasingly important, which are widely used in industry due to their robustness and cost-effectiveness. In this study, we report the electrochemical deposition-fabricated P-Co(OH) 2 /NM and P-NiFe catalysts, which shows excellent performance in the hydrogen evolution reaction and oxygen evolution reaction, respectively. Specifically, P-Co(OH) 2 /NM achieved overpotentials of 41 mV at 10 mA cm −2 and 240 mV at 1000 mA cm −2 , while P-NiFe compound exhibited overpotentials of 278 mV and 403 mV at these currents, respectively. These improvements are attributed to the synergistic effects of crystalline and amorphous phases and the unique porous structure formed via the dynamic hydrogen bubble template method. The assembled electrolyzer demonstrated superior overall water splitting (OWS) performance, requiring only 1.57 V at 10 mA cm −2 and 1.81 V at 1000 mA cm −2 , with remarkable stability exceeding 1000 h. When the OWS temperature is increased to 60 °C, the performance was further enhanced, achieving 1000 mA cm −2 at just 1.72 V. With their simple synthesis and unique structure, these catalysts hold great promise for industrial applications.
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MICROCHEMICAL JOURNAL
·
2025
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IF 5.1
Yingying Wang,Jianyun Zhang,Xinglong Zhang,Yingxuan Liu,Xiaoshan Huang,Zhaolei Ba,Naiqiang Yin,Jing Yu,Chundong Liu
The detection of trace thiram is critically important due to its environmental persistence and biotoxicity. Conventional pesticide residue analysis faces fundamental limitations in sensitivity and accuracy due to low analyte recovery efficiency during sampling, making surface-enhanced Raman spectroscopy an ideal solution for trace thiram monitoring. In this study, we developed a high-performance SERS substrate based on in-situ synthesized silver nanoparticle-decorated indium tin oxide (AgNPs/ITO) glass, fabricated via cyclic voltammetry electrochemical deposition. The substrate demonstrated exceptional sensitivity for standard probe molecules such as R6G, achieving an enhancement factor (EF) of up to 8.62 × 10 6 with excellent signal uniformity and universality. For pesticide detection, the substrate exhibited a remarkably low LOD of 0.55 μg/L for thiram and enabled effective in-situ identification of thiram residues on vegetable leaf surfaces, demonstrating robust capability for practical pesticide residue analysis.
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2026
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IF 3.5
Yanjie Yu,Jiayu Zhao,Yaman Cui,Qing Sun,Ping He,Xiangjun Zheng
Robust integration of free-standing electrodes with efficient mass transport structuring represents a cornerstone for flexible devices. Herein, this work employs facile dual-step electrodeposition-sulfurization on cotton-derived carbon substrate to develop a self-supporting electrode. The resulting open-pore CoS 2 nanosheets on S-doped cotton-derived carbon fiber (CoS 2 -S-CCF) achieve Co−S−C interfacial bonding via in-situ sulfur-induced self-assembly/doping, synergistically enhancing mass/charge transfer. The CoS 2 -S-CCF thus delivers exceptional oxygen evolution reaction performance (overpotential: 332 mV@10 mA·cm -2 ; Tafel slope: 65.1 mV·dec -1 ) and enhanced oxygen reduction reaction activity (half-wave potential: +0.18 V). When deployed in flexible zinc-air batteries, this self-supporting electrode delivers a peak power density of 33.3 mW·cm -2 and stable cycling exceeding 500 cycles, markedly outperforming slurry-based Pt/C+RuO 2 counterparts failing within 400 cycles. Pivotal advantages include the CoS 2 -substrate open-pore network enabling enhanced mass transport beyond dopant effects, binder-free design eliminating interfacial loss, and Co−S−C bonding assuring conductivity retention under deformation. This work provides novel design principles for highly durable free-standing flexible electrodes with optimized mass transfer.
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ACS Nano
·
2026
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IF 16
Peifang Guo,Da Liu,Haiwei Yang,Peng Chen,Mingchang Zhang,Xingyu Ding,Chao Zheng,Hongge Pan,Renbing Wu
Oxygen electrocatalysis, mainly including the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), is a cornerstone in rechargeable metal–air batteries. However, these reactions are sluggish due to the four-electron transfer process and the linear scaling relationship of the intermediate binding strength. Herein, we have rationally developed a hybrid composite consisting of high-entropy alloy nanoparticles (NPs) encapsulated in carbon nanotubes (CNTs) to significantly improve the electrocatalytic performance. In situ spectroscopy investigations and theoretical calculations disclose that high-entropy alloys undergo dynamic reconstruction to form MOOH and M–OH (M represents metallic elements) as the authentic active species in the ORR and OER processes, respectively. Specifically, Fe, Co, Mn, and Cu regulate the charge transfer between the Ni–O bonds in MOOH for the OER, while the high-entropy effect and surface-absorbed OH groups coregulate the d-band center of surface Co for the efficient ORR. Accordingly, the as-developed FeCoNiMnCu@CNTs exhibits activity for both ORR and OER, with an ultralow voltage gap of 0.626 V between the half-wave potential of ORR and the OER potential at 10 mA cm–2. Moreover, Zn–air batteries with FeCoNiMnCu@CNTs exhibit a power density of 131.3 mW cm–2 and robust stability.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 21.1
Bohan Yao,Yueying Yan,Yang Yang,Shihao Yu,Yuting Chen,Qing Liu,Ziwen Zhu,Dongxu Jiao,Zhicai Xing,Dewen Wang,Xiurong Yang
Large-scale green hydrogen production is hindered by the lack of efficient and stable electrocatalysts across wide pH ranges and in seawater. Herein, we report a rationally designed Ru-anchored oxygen-deficient MoO 2 electrocatalyst (Ru-MoO x ) featuring Lewis acid-base pairs (LABPs), where oxygen vacancies (O V ) serve as Lewis acid (LA) sites for water dissociation, while electron-rich Ru nanoparticles act as Lewis base (LB) sites for *H adsorption/desorption. This synergy enables exceptional hydrogen evolution reaction (HER) performance, with overpotentials of 8.5 mV (alkaline), 22.9 mV (acidic), 38.3 mV (neutral), and 7.3 mV (alkaline seawater) at 10 mA cm −2 , which outperforms commercial Pt/C and most reported electrocatalysts. The Ru-MoO x exhibits long-term stability for over 100 hours across all tested media. When integrated into an anion exchange membrane electrolyzer, it achieves 1 A cm -2 at 1.78 V and runs stably for 500 hours, demonstrating promising practical applicability. In situ Raman spectroscopy confirms that the interfacial water microenvironment is modulated and water dissociation is accelerated within the Ru-MoO x . Density functional theory calculations corroborate that LABPs can optimize *H adsorption and reduce Volmer reaction barriers, thereby significantly boosting the kinetics of the HER. This work provides a strategy for the development of high-performance, stable, and pH-universal HER electrocatalysts, thus facilitating sustainable hydrogen production from freshwater and seawater.
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Catalysts
·
2026
·Vol. 16
·期 1
·83
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IF 4
Mengze Sun,Xing Zhang,Jiamin Yan,Hui Zhang,Zhipeng Li,Li Huang,Song Jin,Wei Wang,Ning Li
High-density aviation fuels and diesel-range cycloalkanes are in high demand for the transportation sector, but the development of sustainable and high-efficiency synthesis routes from biomass-derived platform chemicals remains a key challenge. High-density aviation fuel and diesel-grade cycloalkanes were successfully synthesized from biomass-derived isophorone and furfural through a continuous process of selective hydrogenation, aldol condensation, and hydrodeoxygenation reaction. (E) 2-(Furan-2-methylene)-3,5,5-trimethylcyclohex-1-one (1A) was obtained by selective hydrogenation of isophorone to obtain 3,3,5-trimethylcyclohexanone (TMCH), which was then subjected to aldol condensation with furfural. The system studied key reaction parameters such as solvent type, temperature, catalyst type, catalyst loading, and reaction time that affect the aldol condensation of TMCH and furfural. The yield of 1A reached 98.69%, under optimized conditions using NaOH as the catalyst at a molar ratio of 3,3,5-trimethylcyclohexanone:furfural = 1:1, NaOH 0.15 g, anhydrous ethanol as the solvent, and a reaction temperature of 313 K for 1 h. A series of nickel-based catalysts supported on porous materials, including SiO2, CeO2, Al2O3, Hβ, and HZSM-5, were prepared and characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). These catalysts were evaluated for the hydrodeoxygenation of 1A. Among them, the 10% Ni-SiO2catalyst exhibited the highest catalytic activity, affording a C9–C14cycloalkane yield of 88.32% and a total carbon yield of 99.6%. This work demonstrates a promising and sustainable strategy for producing branched cycloalkanes in the diesel and jet fuel range from lignocellulosic biomass-derived platform chemicals.
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Nature Catalysis
·
2026
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IF 44.6
Wang Luqi,Hao Yixin,Pan Jinliang,Bi Suwan,Hung Sung-Fu,Peng Kang-Shun,Wang Ai-Yin,Chen Tsung-Yi,Li Shaoxiong,Ling Chongyi,Zhang Ying,Li Linlin,Hu Feng,Zhou Xiong,Chen Han-Yi,Wu Kai,Wang Jinlan,Wu Yuping,Peng Shengjie
Developing Earth-abundant anode electrocatalysts for proton-exchange-membrane water electrolysis (PEMWE) to replace iridium is crucial for reducing hydrogen production costs but their poor acid stability remains a major challenge. Here we prepare a lanthanum and calcium co-doped Co 3 O 4 catalyst, which can tune water–surface interactions to suppress cobalt dissolution, thereby enhancing stability. Lanthanum with weak water affinity is introduced onto the Co 3 O 4 surface to construct atomic sites with specific water–molecule interactions (CoLa-SWMI). The CoLa-SWMI reconstructs the interfacial water environment and moderately alleviates the polarization of the metal–oxygen bond induced by hydrogen bonding with water molecules, thereby extending catalyst lifetime. Moreover, the leaching of surface calcium species creates highly active coordinatively unsaturated cobalt sites, which enhance catalytic activity (CoLaCa-SWMI). PEMWE using a CoLaCa-SWMI anode operates stably for 830 h at 1.0 A cm −2 . This study provides an approach to designing non-noble-metal electrocatalysts, potentially reducing reliance on rare metals in PEMWE.
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Science China-Chemistry
·
2026
·
IF 9.7
Lv Enmin,Diao Jiefeng,Wang Yilong,Yu Hongtao,Henkelman Graeme,Zhang Hao,Zhang Xuefeng,Dong Xinglong
Developing efficient non-precious oxygen reduction reaction (ORR) catalysts remains a critical challenge. Herein, a direct current (DC) arc plasma strategy was demonstrated to construct nitrogen-doped carbon-coated Ni-ZrC heterostructured nanoparticles ((Ni/ZrC)@NC NPs) with precisely tuned interfacial built-in electric fields (BIEFs). Theoretical studies reveal that the significant work function difference (Δ Φ ) drives an asymmetric charge redistribution at the Ni-ZrC heterointerface, shifting d-band centers to optimize the adsorption energy of oxygen intermediates and to reduce reaction energy barriers. In situ optical emission spectroscopy (OES) captures the dynamic plasma evolution (electron temperature ( T e ) at local thermal equilibrium (LTE): 10,330.9 K), elucidating real-time atomic/ionic flux variations and formation mechanism of the core-shell structure and heterostructure. The synergistic Ni-ZrC core and N-doped carbon shell cooperatively enhance charge transfer kinetics and expose abundant active sites. The resulting catalyst achieves exceptional ORR activity with a half-wave potential ( E 1/2 ) of 0.82 V, surpassing Pt/C (0.80 V), alongside superior methanol tolerance and 4e − selectivity. When deployed in both liquid and all-solid-state flexible zinc-air batteries (FZABs), the catalyst delivers superior metrics: peak power densities of 251.63 mW cm −2 (liquid) and 184.22 mW cm −2 (flexible), and stable operation for a long time. This work establishes a paradigm for manipulating interfacial electronic structures via BIEFs engineering, providing a versatile platform for high-performance energy conversion technologies.
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RESEARCH ON CHEMICAL INTERMEDIATES
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2026
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IF 3.5
Xian Liang,Liu Shuxin,Tian Xiaoxia,Li Wei
This study constructed an electrocatalyst of ultrafine platinum nanoparticles (UPt NPs) loaded onto nitrogen-rich porous hollow carbon spheres (NC). Using ZnO as a sacrificial template, NC carriers with a high specific surface area (516.4 m 2 /g) and hierarchical pore structure were prepared via ZIF-8 coating and carbonization. Pyridine/pyrrole nitrogen doping significantly enhanced the strong mutual interaction (SMSI) between Pt and the carrier. Combined with a mild photo-induced approach, the hydrolysis pathway of the Pt precursor was controlled by adjusting the light wavelength (UV/blue-violet/green light), enabling in situ reduction of Pt on the NC surface and within its pore network at room temperature while effectively suppressing agglomeration. Electrochemical testing revealed that the NC/Pt-UV2 catalyst, synthesized using 2 mM Pt precursor combined with UV light, exhibited a mass-specific activity (1179.5 mA·mg Pt −1 ) and electrochemically active area (135.8 m 2 g −1 ) 4.96 and 5.17 times higher than commercial Pt/C, respectively, with superior activity retention compared to Pt/C after 3600 s of constant-potential testing. This work proposes a method for preparing nitrogen-rich hollow carbon spheres with high specific surface area and a novel strategy for the green, efficient synthesis of ultrafine Pt nanoparticles, offering new insights for the design of supported electrocatalysts.
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Advanced Composites and Hybrid Materials
·
2026
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IF 15.5
Li Fan,Tan Pengyu,Li Degui,Zhuge Xiangqun,Luo Kun,Ren Yurong,Chen Yimin,Luo Yujia,Yang Kaiwen,Lu Jianwei,Liu Dan,Lei Weiwei,Ma Aijing
The extraction of chitin/chitosan from biowaste shrimp shells involves the heavy use of strong acids and alkaline solutions, resulting in a series of decomposed amino acids in the extraction waste. Herein, we demonstrate a new strategy to grow FeNi nanoalloys encapsulated in nitrogen-doped carbon nanotubes (3FeNi-NCNTs) at a high percentage by sintering the extracted amino acids, FeCl 3 , NiCl 2 and melamine at 900 ℃ in N 2 . The FeNi-NCNT exhibits a competitive limiting current density in oxygen reduction reaction (ORR) to the commercial 20% Pt/C, with the onset potential and half-wave potential at 0.98 V and 0.84 V versus RHE. The oxygen evolution reaction (OER) performance also rivals the RuO 2 catalyst, and the overpotential (E j =10 mAcm -2 - E 1/2 ) of as low as 0.76 V, highlighting a green pathway to yield superior bifunctional catalysts at low cost. When used in zinc-air batteries (ZABs), the aqueous ZAB showed excellent cyclic and rate performance, together with the peak power density and specific capacity of 173.6 mW cm -2 and 809.9 mAh g -1 (corresponding to an energy density of XXX Wh kg -1 based on the mass of consumed zinc); and the flexible ZAB with a polyacryl-amide hydrogel electrolyte also exhibited a high peak power density of 133 mWcm -2 and a long cycle life of 140 h, superior to the reference Pt/RuO 2 -based ZABs, highlighting a sustainable biowaste upcycling of shrimp shell valorization on energy storage. Graphical
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Electronic Materials Letters
·
2026
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IF 3.1
He Fangzhen,Bai Ying,Zhang Aiju,Zhang Xiaolin,Wang Fang,Wang Qingyun,Zhong Ming,Su Bitao,Dong Na
Amidst escalating global energy crises and environmental degradation, biomass resources offer a critical pathway for energy transition through their inherent renewability, carbon neutrality, and abundance. However, efficient conversion of waste biomass remains impeded by compositional complexity and suboptimal process energetics, constraining scalable industrial implementation. Building on this, we innovatively utilize waste grapefruit peel as a multifunctional precursor to construct Ni-Mo₂C heterojunction nanocomposites (Ni-Mo₂C/NGC) on a biomass-derived N-doped graphene-like carbon matrix (NGC) via an in situ one-step pyrolysis strategy. Electrocatalytic evaluation reveals that the nanocomposite exhibits outstanding bifunctional activity for both oxygen and hydrogen evolution reactions (OER/HER) in alkaline electrolyte, achieving low overpotentials ( η ) of 260 mV for OER and 120 mV for HER at a current density of 10 mA cm⁻², with corresponding Tafel slopes of 48 and 52 mV dec⁻¹, respectively. Density functional theory (DFT) calculations elucidate that synergistic interfacial electron coupling between Ni and Mo₂C at the heterojunction significantly elevates the density of exposed catalytic active sites, optimizes the adsorption free energy of key reaction intermediates, and accelerates interfacial charge transfer kinetics, thereby cooperatively enhancing the intrinsic bifunctional electrocatalytic activity. This study establishes a novel strategy for the high-value-oriented preparation of high-performance electrocatalysts from waste biomass, providing insights into the construction of non-precious metal bifunctional heterojunction catalysts. Graphical
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Nature Communications
·
2026
·
IF 18.1
Zeng Ziyue,Wang Chenyang,Sun Mingjun,Liu Dong,Zhang Donghong,He Shiyi,Liang Zijia,Ma Yushen,Zhang Yile,Li Ling,Tian Xin,Zeng Mengqi,Ding Mingyue,Ding Feng,Fu Lei
Single-atom catalysts (SACs) enable greener and more economically sustainable chemical production by significantly improving thermocatalysis efficiency and selectivity through maximized atom utilization and highly homogeneous metal coordination environments. Unfortunately, SACs are fundamentally constrained by the stability owing to the severe aggregation of single atoms, especially under the high-temperature thermocatalysis operations, which compromises the overall catalytic performance. Here, we report a synthetic strategy to realize the highly thermal-stable SACs resistance to sintering at harsh conditions through harnessing the inherent metal affinity and fluidity of liquid metal. A stable liquid metal-active metal interaction is formed, profiting from the superior metal affinity of liquid metal. Combined with the fluidity of liquid metal, active metal atoms can move but remain confined to the liquid metal as the metallic single-atom state at high temperatures. This catalyst exhibits outstanding thermal durability for ethane dehydrogenation, sustaining stable operation for over 100 h at 650 °C with an impressive ethylene selectivity of 98%. The strategy of constructing stable metal-metal interactions by utilizing the inherent metal affinity and dynamic fluidity of liquid metal will pave a practical way for the design of highly thermal-stable SACs.
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危险品化学品经营许可证（带存储）