Advanced Composites and Hybrid Materials
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2026
·
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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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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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Neng Li,Naigen Zhou,Ke Xiao,Xuxu Wang,Zhen Liu
Ru-vacancy-rich NiRu v -LDH is constructed on biomass-derived porous wood scaffolds. • Vacancy engineering enables electronic modulation and enhanced mass transport • The PEM electrolyzer operates at 1.75 V and 1 A cm −2 for over 2000 h • Ni-doped RuO 2 reconstruction and DFT reveal the activity-stability origin. Proton exchange membrane (PEM) water electrolysis is vital for green hydrogen production, but its acidic oxygen evolution reaction (OER) is hindered by sluggish kinetics and catalyst delamination. To address this, a self-supported electrode was fabricated by anchoring Ru-deficient layered double hydroxides on a natural camphorwood substrate (NiRu v -LDH). Camphorwood's 3D hierarchical porous architecture provides structural integrity and hydrophilic microchannels that accelerate mass transport and gas release, eliminating polymeric binders. A chemical etching strategy successfully introduced atomic-scale Ru vacancies, reconfiguring the local electronic structure, and lowering the OER overpotential to 215 mV at 10 mA cm −2 . In a PEM electrolyzer, the catalyst required only 1.75 V at 1.0 A cm −2 and demonstrated over 2000 h of industrial-grade stability. Crucially, during the PEM water splitting process, the NiRu v -LDH catalyst undergoes in-situ anodic oxidation to transform into Ni-RuO 2 , which exhibits exceptional stability in the acidic operating environment. Techno-economic analysis confirms its exceptional commercial viability, achieving a hydrogen production cost of ~US$ 1.1 per kg.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Nan Ma,Xingzhe Guo,Wei Liu,Weiwei Xu,Zihao Xing,Jinfa Chang
A phthalocyanine heterojunction oxygen-reduction catalyst formed by axial coordination of oxygen atoms from terminal groups was constructed via a solid-state coupling strategy. • FePPc-PTA exhibits excellent alkaline ORR activity with a half-wave potential of 0.907 V and Zn-air batteries performance with a specific capacity of 817.28 mAh g −1 and stable cycling for over 500 h. • Axial coordination breaks the original planar Fe N 4 symmetry and modulates the local electronic environment of the Fe sites thereby accelerating ORR kinetics. Iron polyphthalocyanine (FePPc) is a structurally well-defined Fe N 4 molecular catalyst for the oxygen reduction reaction (ORR). However, its planar and relatively symmetric Fe N 4 configuration restricts axial O 2 interaction and limits interfacial electron transfer. Herein, a phosphotungstic acid (PTA, H 3 PW 12 O 40 )-coupled iron polyphthalocyanine catalyst, denoted FePPc-PTA, is constructed via a solid-state grinding-assisted coupling strategy. The Keggin-type PTA is incorporated into the conjugated FePPc framework, forming axial Fe O coordination between PTA-derived oxygen species and Fe centers. X-ray photoelectron spectroscopy (XPS) and Fe K-edge X-ray absorption spectroscopy (XAS) reveal a Fe O axial coordination environment and a decreased electron density around the Fe center after PTA incorporation. This axial coordination breaks the original planar Fe N 4 symmetry, regulates the local electronic environment of the Fe sites and promotes interfacial charge redistribution, thereby strengthening the axial interaction between Fe centers and oxygen species and accelerating ORR kinetics. Consequently, FePPc-PTA exhibits excellent alkaline ORR activity, with a half-wave potential of 0.907 ± 0.002 V versus the reversible hydrogen electrode (RHE), a kinetic current density of 22.37 ± 0.10 mA cm −2 , a Tafel slope of 41.92 mV dec −1 and a turnover frequency of 4.40 s −1 at 0.8 V. When employed in rechargeable Zn-air batteries, the FePPc-PTA + ruthenium dioxide (RuO 2 ) air cathode delivers a peak power density of 170 mW cm −2 , a specific capacity of 817.28 mAh g −1 and stable cycling for over 500 h. this work demonstrates that polyoxometalate coupling is an effective strategy for regulating Fe N 4 active sites in metal polyphthalocyanines toward high-performance non-precious ORR catalysis Download: Download high-res image (121KB) Download: Download full-size image
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ADVANCED MATERIALS
·
2026
·
IF 29.1
Wenfeng Lang,Wenlei Zhang,Tianyang Li,Jichuang Wu,Young Dok Kim,Qiaoyun Liu,Meng Zhang,Zhikun Peng,Rui Wang,Zhongyi Liu,Shuang-Quan Zang
The dynamic nature of single-atom catalysts, manifested as transient coordination fluctuations during individual molecular turnovers, has provided crucial mechanistic insights. However, the practical exploitation of such molecular-level dynamics remains fundamentally challenging due to their experimental elusiveness and poor controllability. Here, we report a paradigm shift from these stochastic fluctuations to programmable coordination switching, enabled by the operando-reversible reconstruction of single-atom Cu sites in a Pt/bpy-UiO-CuX 2 model catalyst. Triggered by a reductive environment during hydrogenation, a metastable N 2 -Cu-H configuration is generated under reducing conditions and remains the dominant Cu state during catalysis, before reversibly converting to an oxidized Cu-(OH) 2 form after depletion of reducing species and air exposure. Meanwhile, the coordination anions can be reprogrammed through external acid/anion environments, enabling interconversion among Cl − , OH − , and sulfate-containing Cu coordination states. Multimodal operando spectroscopy combined with theoretical calculations demonstrates that the N 2 -Cu-H intermediate modulates the electronic state of the active Pt center, thereby boosting phenylacetylene-to-styrene selectivity by simultaneously lowering styrene desorption energy by 0.68 eV while raising the barrier for styrene hydrogenation by 0.66 eV. This work elevates dynamic single-atom sites from stochastic structural fluctuations to programmable coordination switching, establishing a new paradigm for enzyme-mimetic catalysts with adaptive responsiveness to redox and acid–base environments.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Lixin Wang,Renjie Ji,Chunge Wang,Fanbo Meng,Zhongwu Luo,Mengran Wang,Hui Jin,Shijie Yang,Shi’an Zhao,Dahao Han,Yongjie Cheng,Tianyu Liu,Jianmin Ma,Yonghong Liu
To address the limited activity and durability of oxygen evolution reaction (OER) electrocatalysts, we present an integrated in situ strategy for constructing a three-dimensional Ni-Co dendritic electrode matrix coupled with a surface amorphous Ni-Co-Fe layered double hydroxide (LDH) catalytic layer. A Ni-Co dendritic matrix (NCDEM) with enhanced electrolyte accessibility and mass transport properties is first fabricated via jet electrodeposition, followed by the in situ hydrothermal growth of Ni-Co-Fe LDH nanosheets to construct a Ni-Co-Fe dendritic electrode (NCFDE). The introduction of NaBO₂ during the hydrothermal process regulates surface etching kinetics and the Fe³ ⁺ coordination environment, promoting uniform nanosheet growth and triggering the crystalline-to-amorphous transition of the LDH structure. The amorphous LDH layer increases the accessible active surface area, facilitates the formation of reconstructed NiOOH active species during OER, and enhances structural stability during prolonged electrochemical operation. The optimized B2-NCFDE exhibits outstanding OER performance in 1 M KOH, requiring an overpotential of only 215.34 mV to achieve 100 mA cm⁻², with a Tafel slope of 38.29 mV dec⁻¹ and stable operation at 500 mA cm⁻² for 2000 h. Furthermore, the B2-NCFDE||B2-NCFDE electrolyzer achieves 100 mA cm⁻² at a cell voltage of 1.822 V and demonstrates excellent durability for overall water splitting. This work provides a scalable strategy that integrates electrode architecture engineering with amorphous LDH regulation for efficient and durable hydrogen production.
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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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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 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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