Journal of Energy Storage
·
2026
·
IF 10.7
Yangyang Xu,Pengyu Zhan,Yipeng Ye,Mengjiao Dong,Shuyun Cui,Chaolong Liu
The development of low-cost bifunctional electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial for advancing Zn-air batteries (ZABs). Herein, Fe/N-doped porous carbon nanofibers (Fe/N@PCNF-2) were synthesized via a one-step strategy featuring the in-situ growth of non-granular metal-organic frameworks (MOFs) directly on electrospun nanofibers, followed by pyrolysis. The optimized Fe/N@PCNF-2 combines a conductive hierarchical porous network with abundant Fe-N x -related sites, delivering an ORR half-wave potential of 0.87 V and an OER potential of 1.55 V at 10 mA cm −2 . Density functional theory (DFT) calculations further attribute the superior bifunctional activity of Fe/N@PCNF-2 to the more balanced adsorption, conversion, and desorption of oxygen-containing intermediates on the representative Fe-N 4 /C configuration. When employed as the air-cathode catalyst, the resulting liquid ZAB displayed a high-power density of 245 mW cm −2 , a minimal charging/discharging voltage gap of 0.75 V, and outstanding cycling stability over 1500 h (4500 cycles). Impressively, a flexible ZAB incorporating the Fe/N@PCNF-2 also achieved a high-power density of 215 mW cm −2 , excellent durability over 75 h (225 cycles) and remarkable flexibility under the multi-angle bending conditions. This work provides a novel and straightforward approach for designing efficient bifunctional electrocatalysts, highlighting their promising potential for practical application.
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INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 34
·20052-20063
·
IF 4.6
Niu Biye,Fu Taiping,Yan Xinrong,Gao Feixiang,Liu Yufeng,Guo Yakun,Shuai Maobing
In closed systems, hydrogen accumulation
poses significant safety
risks, necessitating the development of highly efficient hydrogen
uptake materials. The PtRu/CNFs-catalyzed hydrogenation of 1,4-bis(phenylethynyl)benzene
(DEB) shows promise; however, it is susceptible to deactivation by
trace carbon monoxide (CO) poisoning. This study successfully synthesized
a PtRuRhMnCo multicomponent alloy catalyst supported on carbon nanofibers
(PtRuRhMnCo/CNFs) via a solvothermal method, yielding an average particle
size of 1.87 nm and uniform distribution of the constituent metal
elements. The incorporation of multicomponent alloys lowers the Pt
d-band center, thereby weakening CO adsorption strength. After 10
h of reaction under 500 ppm of CO/H 2 , the alkynyl group
conversion reached 87.3%, whereas the phenyl group conversion was
18.6%. Catalytic activity remained stable over four consecutive cycles,
and hydrogen uptake capacity reached 600 mL·g –1 after a 100 h long-term evaluation. Theoretical calculations indicated
that multicomponent alloying shifted the Pt d-band center downward
from −2.39 eV to −2.43 eV, significantly reducing the
CO adsorption energy. This study demonstrates that the multicomponent
alloying strategy markedly enhances the catalyst’s CO tolerance
by modulating its electronic structure, providing a novel approach
to designing high-performance hydrogen uptake materials.
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高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Yunpeng Xu,Dongbo Zhang,Shuping Mei,Jing Yu,Qiu Liu,Jicheng Yu
Photodeposited Pt/TiO₂ rings degraded 94.98% of LEV within 40 min. • Pt modification enhanced UV activity with low Pt leaching. • Dark controls and scavenger tests supported ROS-driven degradation. • LC–MS detected 18 products and supported five tentative pathways. • QSAR predicted reduced bioaccumulation for most products. A recoverable Pt/TiO 2 porous ceramic composite was prepared by photodeposition for ultraviolet (UV)-driven degradation of levofloxacin (LEV). The catalyst was characterized by structural, microscopic, surface, optical and elemental analyses, and its activity, stability, reactive species, transformation products and predicted toxicity were evaluated. Pt deposition preserved the anatase/rutile structure of P25 TiO 2 , introduced dispersed metallic Pt, enhanced long-wavelength absorption and improved LEV removal. Under optimized conditions (1.0 wt% Pt, 2.0 g/L catalyst, pH 9.0), 94.98 ± 0.56% of LEV was degraded within 40 min, outperforming TiO 2 . The composite retained high activity over six cycles with low Pt leaching. Scavenger tests indicated that •OH was the dominant reactive species, with h + and •O 2 − also contributing. LC–MS detected 18 transformation products and supported five tentative degradation pathways. Quantitative structure–activity relationship (QSAR) predictions predictions suggested reduced bioaccumulation and lower mutagenicity/developmental-toxicity concerns for several terminal products, although experimental toxicity validation remains necessary.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Wang Jun,Ding Yunshan,Liao Xinyi,Hu Yu,Zhang Jian,Zhou Yulin,Li Zengrui,Huang Jinhan,Chen Liangzhe,Ke Heng
Developing cost-effective and high-performance non-precious electrocatalysts toward the hydrogen evolution reaction (HER) as alternatives to substitute platinum (Pt)-based remains a formidable bottleneck for large-scale industrial water electrolysis. Herein, a molten salt synthetic route to fabricate a series of composite materials composed of nickel (Ni) nanoparticles incorporated on carbon materials (denoted Ni/C-m) for efficient alkaline HER electrocatalyst. The ratio between Ni and C of the composite materials Ni/C-m can be modulated by tuning the mass of carbon material precursor. Benefiting from optimized component proportions, the optimal Ni/C-1.0 sample exhibits an overpotential of −106 mV at the current density of −10 mA cm −2 and long-term durability under alkaline solution. The outstanding HER electrocatalytic performance originates from the well conductive of carbon materials and the synergistic interaction between Ni nanoparticles and C. This study offers a straightforward, scalable synthetic method to construct affordable and high-efficiency non-precious HER electrocatalyst for electrocatalytic hydrogen production. Graphical Herein, Ni nanoparticles incorporated on carbon materials (Ni/C) were synthesized via molten salt strategy. Through regulate the mass of carbon materials precursor, the molar ratio between Ni and carbon materials of Ni/C can be adjusted. The synergistic interaction between Ni and carbon material can enhances the Ni/C electrocatalyst HER performance. As-prepared Ni/C electrocatalyst possess the optimal ratio of Ni and carbon materials which exhibits an excellent HER performance with an low overpotential of −106 mV at the current density of −10 mA cm −2 and long-term stability. This work open a new insight for fabricating and designing transition metal electrocatalysts for industrial hydrogen production.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Hui Liu,Rong Lin,Yi Wu,Zhihao Huang,Yuchang Shen,Xuanxuan Lin,Nan Li,Shaoda Huang,Qipeng Li,Jinjie Qian
The rational design and facile synthesis of non‑platinum carbon catalysts with high energy conversion efficiency remain a core challenge in electrocatalysis. To address this, we successfully constructed a unique shell-in-shell catalyst through a phytic acid (PA) etching and secondary pyrolysis strategy, designated as CZIF-PA-Fe 2 P/NC. In this process, PA not only drives the selective etching of cubic ZIF-8 nanocrystals but also serves as an in situ phosphorus source to induce the uniform nucleation of highly active Fe 2 P nanoparticles embedded in ZIF-derived N,P-codoped carbon nanoboxes. Consequently, the obtained CZIF-PA-Fe 2 P/NC catalyst achieves an excellent oxygen reduction reaction (ORR) half-wave potential of 0.914 V, and maintains a 96.73% current retention over a 30-h stability test. When assembled into zinc-air batteries, the device delivers a peak power density of 157.58 mW cm −2 , a specific capacity of 795.76 mAh g −1 , and long-term cycling stability surpassing that of 20 wt% Pt/C. Finally, density functional theory calculations reveal that the synergistic electronic modulation between the N,P-codoped carbon substrate and Fe 2 P promotes an upward shift of the Fe d -band center, thereby optimizing the adsorption of key *OOH intermediates and significantly reducing the energy barrier of the rate-determining step. This work establishes a precise morphology design and interface engineering paradigm for developing cost-effective, high-performance metal-organic framework-derived non-noble-metal carbon electrocatalysts for energy conversion and storage applications. The selective etching of phytic acid not only endows the material with abundant pore diameters to enhance mass transfer but also serves as an in-situ phosphorus source to promote the uniform nucleation of highly active Fe 2 P nanoparticles. By employing PA-induced etching, shell-in-shell carbon catalysts were successfully fabricated to exhibit satisfactory oxygen reduction. Download: Download high-res image (196KB) Download: Download full-size image
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Kuan Shen,Yuqi Chen,Ming Li,Xingmei Guo,Siying Fan,Yafei Zhao,Zhao Xu,Yuanyuan Wang,Qinghong Kong,Junhao Zhang
Non-metallic carbonaceous catalysts for oxygen reduction reaction (ORR) hold great promise for applications in zinc-air batteries (ZABs). Their performance is substantially dictated by the type and quantity of heteroatoms doped within the carbon lattice. Herein, a novel polymerization-pyrolysis strategy is proposed to prepare N, P, S triply doped carbon nanosheets (NPS-C) and regulate the amount of doped atoms. The optimized sample showcases excellent ORR catalytic performance, featuring a half-wave potential of 0.81 V vs. RHE and high long-term stability. When employed as the cathode catalyst in primary ZABs, the resulting battery delivers a high peak power density of 157.9 mW cm −2 , along with high specific capacity and good rate capability. This work provides a simple and effective strategy for developing non-precious carbon-based electrocatalysts, offering new possibilities for enhancing the performance of energy storage and conversion devices.
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Molecular Catalysis
·
2025
·
IF 4.9
Min Yang,Shuang Sheng,Ziyi Wan,Yaoyao Xu,Rui Qi,Xiaofeng Luo,Weiyu Pan,Kunshan Yang,Ziqing Zhang,Guowei Deng
Hydrogen evolution reaction (HER) is a key step in the production of hydrogen (H 2 ) by overall water splitting, which is of great significance for the storage and conversion of renewable energy. Nevertheless, the elevated excess potential and insufficient stability of catalysts constrain their industrial applicability. Due to the poor catalytic activity of NiWO 4 in alkaline solution, this study investigated the effect of IB metal (IB=Au, Ag, Cu) ion doping and its interaction with different concentrations of IB x /NiWO 4 ( X = 1,2,3,4 mmol) on catalytic activity to achieve stable H 2 in alkaline media. In 1.0 M KOH solution, the current density is 10 mA cm −2 , the Au 3 /NiWO 4 exhibits a low overpotential is 86.11 mV, the slope of Tafel is 115.16 mV dec −1 , and the overpotential of Ag 3 /NiWO 4 is 168.41 mV, with a Tafel slope of 64.32 mV dec −1 , the catalyst also showed long term stability for 150 h, the Au 3 /NiWO 4 NF‖Au 3 /NiWO 4 NF catalysts achieved a low voltage of 1.45 V at 10 mA cm −2 current density for 100 h. The synergistic interactions of bimetals present a novel approach for enhancing catalyst design and optimizing performance.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Longyu Wang,Yiming Zhang,Chengyu Zhang,Fabrice Ndayisenga,Xiangyang Wang,Renyuan Zhao,Zhisheng Yu
The alkaline hydrogen evolution reaction (HER) plays a crucial role in advancing sustainable hydrogen production technologies. However, the limited abundance and reactivity of interfacial water molecules significantly hinder the reaction kinetics. This research develops a WC x -supported PtNi alloy (PtNi/WC x ) catalyst to reorganize the hydrogen-bond arrangement of interfacial water by adjusting electron density at metal sites. In situ Raman coupled with ab initio molecular dynamics (AIMD) is employed to investigate how the interfacial hydrogen-bond network influences catalytic activity. These results demonstrate that the electron-rich Pt sites in PtNi/WC x disrupt the hydrogen-bond network by altering the alignment of water molecules. This disruption enhances the mobility and reactivity of H 2 O* and OH* intermediates at the solid-liquid interface. The optimized PtNi/WC x catalyst achieves exceptional HER activity, requiring only 16 mV at 10 mA cm −2 and 78 mV at 100 mA cm −2 . These findings offer a microscopic perspective and theoretical guidelines for optimizing HER catalysts via interfacial water structure manipulation.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Tie Ye,Zhenyu Gao,Yong Qin,Zheng Ren,Yi Wang
The development of efficient bifunctional electrocatalysts capable of driving both hydrogen and oxygen evolution reactions (HER/OER) remains a critical task for renewable as well as sustainable water decomposition systems. Herein, we presented an electrocatalyst comprising cobalt sulfide (Co₃S₄) circular nanosheets decorated with trace platinum (Pt) nanoparticles, directly grown on nickel foam (Co-S-Pt@NF). Through synergistic integration of uniformly dispersed Pt and sulfur-rich coordination environments, the catalyst achieved exceptional dual-functional activity in alkaline medium (1 M KOH). The overpotentials of Co-S-Pt@NF at 100 mA cm - ² current density were 68 mV (HER) as well as 353 mV (OER), respectively, exceeding those of Pt-C@NF as well as Ru-O@NF. The density functional theory (DFT) calculations were conducted to investigate mechanism. When Co-S-Pt@NF was adopted as two electrodes in an electrolyze for overall water decomposition, the system could provide 100 mA cm - ² at a low cell voltage of 1.59 V and maintained stable efficiency operation in the 1 M KOH solution for 100 h. This work provided a potential example for the design of cost-effective and high activity “trace precious metal + transition metal supports” bifunctional catalysts.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Haonan Wu,Shengyao Su,Ningning Zhan,Jidong Cong,Yangshang Zhu,Pengfei Tian,Shiwei Song,Jingquan Liu
It remains challenging for constructing the electrocatalysts that can prevent agglomeration, clogging and resist corrosion to improve the hydrogen evolution reaction (HER) performance of alkaline seawater. This study proposes a defect-assisted impregnation strategy to developed the Pt-NiMoOH/NMF with Pt sub-nanocluster distribution induced by a NiMoOH nanoarray on NiMo foam, resulting in an admired HER catalytic activity in alkaline seawater. The rich-defect NiMoOH nanosheet array strengthen the interaction with the Pt nanoclusters, not only effectively inhibiting the agglomeration of Pt, but also inducing the electron enrichment on the Pt surface by regulating electron local electronic environment. It is conducive to accelerating the water dissociation efficiency, enhancing the adsorption of protons and preventing the Ca/Mg clogging for active sites, and lead to remarkable improvements for HER performance. As a result, the Pt-NiMoOH/NMF electrocatalyst possessed a superior acid-like kinetics in 1 M KOH with a low Tafel slopes (38.6 mV dec −1 ) and overpotentials (66 mV at 500 mA cm −2 ). Significantly, it required an overpotential of 74 mV at 500 mA cm −2 and operated for 300 h continuously and stably in alkaline seawater condition. This work presents a novel strategy for enhancing catalytic performance in seawater by adjusting the interfacial interaction between metals and support.
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Doan Thi Luu Luyen,Dinh Chuong Nguyen,Dat Ngoc Trinh,Son Vu Truong Le,Soon-Gil Yoon,Nguyen V. Hieu
Rationally designed electrocatalysts with excellent catalytic activity and robust stability are essential for enhancing the performance of water splitting toward a near-future hydrogen economy. In this work, we report a highly efficient triphase hetero-interface heterostructured electrocatalyst consisting of ultrafine Rh nanoparticles anchored on Cu3P/MnP nanosheets supported on Ni foam (labelled Rh/Cu3P/MnP) to boost the performance of overall water splitting. Experiments clarify the impressive role of the triphase hetero-interface of Rh, Cu3P, and MnP in interfacial electronic redistribution, which is significant for optimizing the catalyst's ability to adsorb and desorb reaction intermediates, thereby accelerating electrochemical reaction kinetics. Additionally, the rationally controlled multi-dimensional structure-comprising 0D Rh nanoparticles, 2D Cu3P/MnP nanosheets, and a 3D Ni substrate-endows the catalyst with a large electrochemically active surface area, excellent charge transfer ability, and abundant accessible active species. Therefore, the Rh/Cu3P/MnP catalyst demonstrates promising catalytic performance for the two key reactions in water splitting: the hydrogen evolution reaction and the oxygen evolution reaction. Moreover, a water electrolyzer utilizing Rh/Cu3P/MnP catalytic electrodes exhibits remarkable efficiency and remains stable over 50 h of continuous operation.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Hanfang Zhang,Junhao Dai,Banglong Shen,Donghui Zhang,Yanfang Wang,Bingbing Qiu,Huaqiang Chu
Mo-based catalysts have received widespread attention for their promising hydrogen evolution reaction (HER) efficiency. However, single Mo-based catalysts still have some shortcomings in terms of catalytic activity. Designing heterostructure is an effective strategy to optimize electron configuration, accelerate HER dynamics and modulate microstructure. Herein, a novel cross-linked sheet-like r-FeMo/NF (Fe 2 N/Mo 2 N/MoO 2 ) electrocatalyst with multiple heterostructures was prepared by a facile two-step method involving hydrothermal growth followed by nitridation, which directly formed the active material on nickel foam (NF). The formation of multiple heterostructures results in the redistribution of electrons between Fe and Mo species, promoting charge transfer and improving HER activity. As a result, the as-prepared r-FeMo/NF catalyst demands a low overpotential of 46.1 mV to drive the current density of 10 mA cm −2 for the HER in 1 M KOH. Moreover, it demonstrates outstanding long-term stability, maintaining excellent performance for 100 h at both 10 and 100 mA cm −2 . This work can provide valuable insights into designing highly efficient electrocatalysts with multiple heterostructures.
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