Surfaces and Interfaces
·
2026
·
IF 6
Lihuan Feng,Yulin Wang,Hao He,Chunyu Li,Peng Chen,Qiang Liu,Xing’an Dong,Wenjie He,Jiazhen Liao,Wendong Zhang
Solar-driven photocatalytic CO 2 reduction provides a sustainable pathway for carbon-neutral fuel production, yet its efficiency is fundamentally limited by the chemical inertness of linear CO 2 and inefficient utilization of photogenerated charge carriers. Effective activation of CO 2 requires electron injection into its antibonding π* orbitals, a process that is poorly matched with conventional oxide photocatalysts. Herein, we construct chemically defined Ti-O-Fe interfacial bonds in TiO 2 /Fe 2 O 3 heterojunctions to establish a directional d→π* electron-transfer channel for CO 2 activation. The optimized TiO 2 /Fe 2 O 3 photocatalyst, synthesized via a one-step hydrothermal method, exhibits broadened visible-light absorption and delivers a CO formation rate of 17.56 μmol·g −1 ·h −1 , over three times higher than that of pristine TiO 2 . Spectroscopic analyses and density functional theory calculations reveal that interfacial electron transfer shifts Fe 3d states toward the Fermi level, enabling strong hybridization with the CO 2 π* orbitals and significantly lowering the free-energy barrier for *COOH formation. This bond-mediated electronic coupling not only suppresses charge recombination but also directs photogenerated electrons toward the CO 2 activation pathway. These results demonstrate that interfacial d-band engineering through chemically specific oxide–oxide bonds provide a powerful strategy to program elementary reaction steps in solar-driven CO 2 reduction beyond conventional band-alignment design.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Yinshuang Shao,Huipeng Zhao,Ji Wang,Xiaoshuang Zhang,Xiaoqiang Du
Electrocatalytic seawater splitting for generating H 2 has become one of the most promising methods. This study prepared M-NiSe/Ni 3 Se 2 (M = Co, Fe, Cd) electrocatalysts through a one-step hydrothermal selenification reaction. In alkaline seawater, the Co–NiSe/Ni 3 Se 2 electrode requires overpotentials of 273, 369, and 431 mV to drive current densities of 10, 50, and 100 mA cm −2 for oxygen evolution reaction (OER) process, respectively. Moreover, the Co–NiSe/Ni 3 Se 2 electrocatalyst needs only potential of 1.395 V to drive a current density of 10 mA cm −2 in the urea oxidation reaction (UOR) process. According to density functional theory result, the synergistic effect between the large H 2 O adsorption capacity of Co–NiSe and the superior electrical conductivity of Ni 3 Se 2 is a key factor for contributing to the superior performance of the Co–NiSe/Ni 3 Se 2 catalyst. This study conducted systematic doping comparison experiments on the NiSe/Ni 3 Se 2 system, providing authentic and reliable experimental support for the design of selenide electrocatalysts.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Sifan Sun,Jiawei Li,Qianzuo Liu,Binqi He,Haoran Yang,Xinyue Xiang,Ying Hao,Xuehua Yan,Ting Zhang,Tie Li
Hydrogen peroxide (H2O2) is an indispensable mediator in cellular signaling pathways, playing a multifaceted role in biological systems. The development of advanced catalysts derived from flexible sensors for the real-time monitoring of dynamic H2O2 in vivo remains an important research issue. Recently, dual single-atom catalyst-based nanozymes exhibit synergistically enhanced catalytic performance, displaying excellent potential for H2O2 detection. Nevertheless, rationally regulating the geometric structures and electron transfer between the two metals still pose significant challenges. Hence, in this study, an advanced Fe/Ce dual single-atom catalyst (Fe/Ce–C)-based nanozyme was constructed, which proposes a Ce single-atom doping strategy to alter the electronic structure of Fe single-atom sites, endowing it with a high adsorption energy for hydroxyl groups to reduce the energy barrier of H2O2 in the reaction. This Fe/Ce–C achieves a linear sensing behavior in the range of 0.5–10,000 μM with a response speed of 1.4 s, a detection limit of 0.223 μM, and a sensitivity of 213 μA/mM·cm2. Furthermore, the nanozyme-derived flexible electrochemical sensor was assembled for real-time monitoring of H2O2 concentration changes in the brains of living rats, exhibiting long-term detection capability and excellent in vivo biocompatibility. Such an Fe/Ce dual single-atom nanozyme-based electrochemical sensor can serve as a promising tool for monitoring diseases like Parkinson’s.
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高影响因子
ACS Catalysis
·
2026
·
IF 13.6
Ziguang Zhou,Yang Zhang,Jungang Wang,Bo Hou,Riguang Zhang,Lixia Ling,Debao Li,Baojun Wang
The use of anatase–rutile mixed-phase TiO2 (P25) as a support improves both CO conversion and selectivity toward low-carbon alcohols (C1–C5 mixed alcohols) during syngas conversion over Cu–Fe bimetallic catalysts. A 61.4% selectivity to low-carbon alcohols was obtained at a CO conversion of 35.0%. The low-carbon alcohol yield (21.5%) over CuFe/P25 is 31 and 3 times higher than the yields over Cu–Fe catalysts supported on pure anatase TiO2 and pure rutile TiO2, respectively. The anatase–rutile synergy in P25 contributes to the high dispersion of Cu–Fe species and facilitates electron transfer from the P25 support to both Cu0 and FeCx active sites via metal–support interaction. CuFe/P25 enhances both the capabilities of CO adsorption, dissociation, and non-dissociative insertion and the formation of CHx, CHO, and HCOO intermediates. These findings suggest that tuning the crystalline phase of the support constitutes a rational strategy for enhancing the catalytic activity of the metal sites.
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高影响因子
CHEMISTRY OF MATERIALS
·
2026
·
IF 7.1
Chaohui Guo,Ang Qiao,Xuan Ge,Xiaoming Ren,Zijuan Du,Haizheng Tao,Yuanzheng Yue
Modulating the degree of structural disorder in metal–organic frameworks (MOFs) offers a promising strategy for tuning their physical and chemical properties. Structural disorder in MOFs can be created by various means, e.g., mechanical treatment or melting. Here, we show that structural disorder can be induced in an iron-based zeolitic imidazolate framework (denoted as Fe-ZIF) upon dynamic heating. The onset temperature of such structural disorder in Fe-ZIF is lower than its melting point. Small- and wide-angle X-ray scattering, together with high-energy synchrotron X-ray diffraction, revealed that structural disorder primarily evolves at the medium- and long-range scales, while the short-range order remains largely preserved. The distortion of medium-range structural domains, particularly the [Fe4Im8] clusters, led to the loss of long-range atomic periodicity in Fe-ZIF. Moreover, magnetic measurements demonstrate that the sample with a higher degree of medium-range structural disorder exhibited a lower spin freezing temperature. Thus, our work established a viable strategy for tailoring structural disorder in MOFs, enabling precise modulation of their magnetic functions.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Kaixin Tian,Jinxiu Zhao,Weicheng Ye,Chunfan Cui,Jianlin Deng,Linrui Hou,Changzhou Yuan
Transition metal sulfides (TMS) have emerged as promising electrocatalysts for overall water splitting (OWS), owing to their cost-effectiveness, inherent abundant active sites and tunable electronic structures. However, several issues, e.g. , high overpotentials originating from the sluggish water dissociation, shielding of active sites and mass transfer resistance, as well as the modest long-duration electrocatalytic stability, are still enormous challenges. For this, the superwetting leafy Fe-doped nickel sulfide/cobalt sulfide nanoarrays on nickel foam (NF) (denoted as Fe-NiS/Co 2.67 S 4 /NF) are successfully designed and fabricated by the template-involved avenue. The interfacial electron re-arrangement of NiS/Co 2.67 S 4 induced by Fe doping optimizes the charge density distribution near the d-band center, promoting the adsorption-desorption of reaction intermediates. Additionally, the unique leafy architecture exhibits superhydrophilic sur−/interfaces, enabling efficient electrolyte penetration and accelerated bubble release during in-situ gas generation. Thereby, the advantages validated by comprehensive physical experiments and theoretical calculations endow Fe-NiS/Co 2.67 S 4 /NF with superior electrocatalytic performance in both hydrogen evolution reaction and oxygen evolution reaction, along with remarkable operational stability during high-current-density overall water electrolysis (1000 h at 500 mA cm −2 ). This work, besides the well-established reliable methodology for TMS nanoarrays, offers in-depth insights into catalytic optimization of electrocatalysts for high-efficiency OWS.
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2026
·
IF 6.9
Yuhao Wang,Zhenye Zhu,Guanglei Li,Shengmin Chen,Yapeng Yue,Gefeng Li,Zhenghong Yan,Liang Zhou,Rongshu Zhu,Jiaheng Zhang
Background Lithium-sulfur (Li-S) batteries are promising next-generation energy storage systems due to their high theoretical energy density. However, their practical deployment is hindered by the polysulfide shuttling effect and sluggish redox kinetics. Methods We demonstrate an ionic liquid (BMIM-BF4)-assisted strategy to synthesize hollow carbon nanospheres anchored with Fe-Co diatomic catalysts (NFB-FeCoNC/HSs). Significant findings Systematic characterization reveals that the dual-metal sites synergistically enhance bidirectional sulfur redox reactions, while the ionic liquid-derived heteroatoms (N, F, B) optimize catalyst porosity and metal loading density. Electrochemical evaluations show the sulfur cathode achieves remarkable cycling stability with 59.28% capacity retention after 200 cycles at 0.2 C. Notably, under high sulfur loading (8.89 mg cm⁻²) and lean electrolyte conditions (E/ S = 5.3 μL mg⁻¹), the battery delivers an exceptional areal capacity of 8.87 mAh cm⁻². Long-term cycling at 1 C exhibits a high initial discharge capacity of 1001.12 mAh g⁻¹ with 415.4 mAh g⁻¹ retained after 1000 cycles, corresponding to a minimal decay rate of 0.58% per cycle. This work establishes a paradigm for designing hierarchical diatomic catalysts to address critical challenges in Li-S systems.
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高影响因子
VACUUM
·
2026
·
IF 4.3
Zhipeng Jing,Aimin Liu,Xiaoqing Lu,Zihao Xu,Jinhui Wang,Fengguo Liu,Xianwei Hu,Zhenkun He,Zhongning Shi
Samarium-iron (Sm-Fe) permanent magnets represent a significant class of magnetic materials whose comprehensive magnetic properties are comparable to those of NdFeB magnets, and serve as one of the principal raw materials for producing the fourth-generation rare earth magnetic material SmFeN. In this study, Sm(CF 3 SO 3 ) 3 and FeCl 2 were dissolved in a solvated ionic liquid composed of 1,3-dimethyl-2-imidazolidinone (DMI) and LiNO 3 , and attempts were made to electrodeposit Sm-Fe alloy films at room temperature. The electrochemical behaviors of Sm(III) and Fe(II) in this ionic liquid were investigated using cyclic voltammetry. Furthermore, Sm-Fe films were electrodeposited from a DMI-LiPF 6 -Sm(CF 3 SO 3 ) 3 -FeCl 2 electrolyte, and the influence of deposition potential and metal salt molar ratio on the microscopic morphology of cathodic plating were investigated. The results indicate that the co-deposition of Sm with Fe can be achieved in this system, in which the reduction of Sm(III) proceeds via a two-step mechanism. The reduction of Sm(III) to Sm(II) is a diffusion-controlled irreversible process, with a diffusion coefficient of 5.34 × 10 −9 cm 2 /s at 333 K. The main phase identified in the cathode product was Sm 2 Fe 17 , in which the mass fractions of Sm and Fe were 32.57% and 19.80%, respectively. When the molar ratios of Sm(CF 3 SO 3 ) 3 to FeCl 2 were set at 20:1 and 60:1, Sm-Fe films with smooth and flat surfaces were successfully obtained by electrodeposition at potentials of −2.4 V and −2.6 V (vs. Ag).
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INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Yanmei Chen,Qirtas Malik,Bolun Wang,Yu Wang,Mian Li,Tao Bo,Jianming Xue,Jianxin Zou,Qing Huang
The development of earth-abundant, low-cost, highly active catalysts to accelerate hydrogen absorption/desorption kinetics in Mg-based materials is critical for hydrogen energy applications. Here, we synthesize three MAX phases with nonconventional A-site elements─Nb2FeC, Nb2NiC, and Nb2CuC─and directly incorporate them into MgH2 matrices without hazardous HF etching. All three MgH2-10 wt % Nb2AC (A = Fe, Ni, Cu) composites exhibit a reduction in onset dehydrogenation temperature from 320 °C to approximately 190 °C, and their dehydrogenation temperature and kinetic behavior are markedly superior to Nb2AlC, demonstrating that substituting the A-site element Al with late transition metals substantially enhances catalytic performance toward MgH2 dehydrogenation. Among them, the MgH2-10 wt % Nb2NiC composite shows optimal performance, releasing ∼6.30 wt % H2 at 300 °C within 10 min and absorbing ∼5.01 wt % H2 at 175 °C within 3 min, while maintaining good cyclic stability. Experimental and theoretical results jointly confirm that Nb2NiC functions as an efficient electron-mediated catalyst, weakening Mg–H bonds and promoting H2 dissociation via interfacial electron transfer, thus significantly improving hydrogen storage kinetics.
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高影响因子
Journal of Energy Chemistry
·
2026
·
IF 15.6
Xuejing Zhao,Ping Li,Chengbin Wang,Kaicai Fan,Bin Li,Zhenyu Xiao,Porun Liu,Zumin Wang,Lei Wang,Lingbo Zong
Addressing the bottlenecks of catalytic efficiency and cost in clean energy conversion and electrochemical synthesis is critical for low-carbon technology advancement. Herein, we design an iron single atom supported on an inverse opal-structured carbon support (Fe-N-C io ), featuring unique hierarchical pores (micropores, mesopores, macropores) and an interlayer-confined microenvironment that synergistically enhances mass transfer and modulates the electronic structure of Fe-N 4 active sites. We demonstrate that the confined microenvironment in bilayer graphene downshifts the Fe d -band center, weakening the binding strength of oxygen intermediates, favoring O–O bond cleavage and reducing the rate-determining step energy barrier (O* → OH*). Consequently, Fe-N-C io outperforms commercial Pt/C, achieving a half-wave potential ( E 1 / 2 ) of 0.91 V with only 7.87 mV decay after 100,000 cycles. In practical device applications, the aqueous zinc-air batteries (A-ZABs) assembled with Fe-N-C io achieve stable operation for over 1200 h, with a voltage gap change of only 20 mV. The quasi-solid-state zinc-air batteries (QSS-ZABs) exhibit an OCV of 1.48 V, a large peak power density of up to 207.73 mW cm −2 , and also cycling durability for 160 h. In chlor-alkali electrolysis systems, the Fe-N-C io ||RuO 2 chlor-alkali flow cell operates at 1.66 V (80 °C, 300 mA cm −2 ) with stable performance for over 110 h. This work validates the application potential of Fe-N-C io in energy conversion and industrial electrochemistry, while systematically elucidating the regulatory mechanism of the interlayer-constrained microenvironment on single-atom catalyst’s performance, which provides a paradigm for designing high-efficiency non-precious metal catalysts. Interlayer-confined Fe-N 4 sites optimize electronic modulation, and the hierarchical porous carbon accelerates mass transport, thus enhancing the oxygen reduction reaction. Download: Download high-res image (351KB) Download: Download full-size image
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ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Chunxia Ma,Limin Ma,Yaoyao Chen,Rui Han,Dongming Xu,Huanhuan Xing,Shasha Lu,Dewen Wang,Xiurong Yang
A major hurdle in nanozyme design is the difficulty of rationally tuning the coordination and electronic states of active sites, which are typically locked by the material’s rigid framework or surface composition. In this study, we address this limitation by developing a series of Fe-based quasi metal–organic framework nanozymes having a succulent appearance, denoted as Qx-MIL, through controlling the calcination of MIL. Partial decomposition of terephthalic acid ligands during heating increases the electron density of Fe active centers, reduces their coordination number, and generates asymmetric unsaturated Fe sites. These structural modifications enhance electron transfer, improve intermediate adsorption, promote the hydroxyl radical formation, and lower the energy barrier of the rate-determining step. As a result, Q400-MIL exhibits remarkable peroxidase-like activity and enhanced reaction kinetics. Leveraging this superior enzyme-mimicking performance, we constructed a galactose-oxidase-cascade colorimetric biosensor for the sensitive and selective detection of galactose. This work not only validates the high enzymatic activity and bioapplication potential of quasi MOF nanomaterials but also provides a simple and effective strategy for precisely engineering the active sites of nanozymes to broaden their functional scope.
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高影响因子
Coatings
·
2026
·Vol. 16
·期 6
·659
·
IF 3.4
Yi Zheng,Xin Luo,Sizhe Li,Zhengxian Shen,Hui Su
Faced with a global energy crisis and ecological degradation, overall water splitting (OWS) is a pivotal approach for renewable energy conversion and storage. However, its industrial application is hindered by the high energy barriers/sluggish kinetics of the anodic oxygen evolution reaction (OER), as well as the scarcity of precious metal catalysts limiting large-scale deployment. Herein, a cobalt-based layered double hydroxide (Co-LDH) was used as the precursor, and a multi-strategy synergistic modification (hydrothermal synthesis, Fe doping, sulfurization, and external magnetic field magnetization) was applied to fabricate the Fe-Co3S4-MS-20 min electrocatalyst. This strategy establishes Fe-Co bimetallic synergistic active centers, and magnetic treatment modulates the electron configuration of Fe 3dorbitals without changing the material’s lattice spacing or morphology. Structural characterizations and electrochemical measurements were used to investigate the effects of combined modifications on the catalyst’s phase structure, morphology, electronic structure, and trifunctional catalytic performance toward the hydrogen evolution reaction (HER), OER, and urea oxidation reaction (UOR). The Fe-Co3S4-MS-20 min catalyst exhibits a larger electrochemical active surface area, lower charge transfer resistance, and smaller Tafel slope in 1 M KOH, it achieves overpotentials of 165 mV for HER (10 mA·cm−2) and 310 mV for OER (100 mA·cm−2), along with superior UOR performance and long-term stability. In situ impedance and Raman spectroscopy confirm that magnetization accelerates charge transfer and promotes in situ reconstruction. Synergistic multi-strategy regulation optimizes the electronic structure of active centers, reducing electrocatalytic energy barriers. This work provides new insights into designing high-performance non-precious metal electrocatalysts and offers experimental support for external magnetic field regulation in electrocatalyst modification.
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