JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Linlin Wang,Yafei Guo,Wenhui Zhao,Pengfei Wang,Zonglin Liu,Ting-Feng Yi
A unique 3D hierarchical network consisting of 0D carbon dodecahedra and 1D carbon nanotubes is successfully constructed via in-situ growth. • Phosphorus doping serves as a versatile modulator to induce 1D morphology formation and optimize the electronic density of iron active centers. • The optimized N, P co-doped Fe-N-C catalyst exhibits an outstanding half-wave potential of 0.884 V in alkaline media. • The assembled zinc-air battery achieves a remarkable operational lifespan exceeding 1300 h with superior structural integrity. Developing highly efficient and durable non-precious metal electrocatalysts for oxygen reduction reaction (ORR) remains a critical challenge for the practical application of zinc-air batteries (ZABs). Herein, we successfully synthesized a robust N, P-codoped Fe-N-C catalyst featuring a unique 0D/1D intertwined architecture through a phosphorus-induced heteroatom-modulation strategy. By utilizing FePc-encapsulated ZIF-8 as a precursor, the in-situ growth of 1D carbon nanotubes from 0D carbon dodecahedrons was achieved, constructing a 3D hierarchical conductive network. Experimental and mechanistic analyses reveal that P-doping serves as the key morphology director. It not only induces the formation of structural-stable 1D nanotubes to enhance electron transfer but also modulates the electronic density of Fe centers to elevate electro-oxidation resistance. Consequently, the optimized catalyst exhibits a superior half-wave potential (E 1/2 ) of 0.884 V (vs. RHE) in alkaline media. Remarkably, the as-assembled ZAB achieves an exceptional stability of over 1300 h, demonstrating the superior structural integrity and durability of the 0D/1D network. This research offers a strategic design for engineering high-performance and stable Fe-N-C catalysts through synergistic 0D/1D architecture construction. Phosphorus-induced modulation facilitates the in-situ growth of 1D nanotubes from 0D dodecahedrons, constructing an integrated 0D/1D hierarchical Fe-N-C structure. This structural engineering optimizes the electronic environment of Fe sites for enhanced ORR kinetics (E 1/2 = 0.884 V) and endows practical zinc-air batteries with an outstanding stability exceeding 1300 h. Download: Download high-res image (283KB) Download: Download full-size image
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高影响因子
Journal of Energy Chemistry
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2026
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IF 15.6
Feng Chen,Zhuang Ye,Haojie Liang,Haixia Zhang,Junjie Guo
Axial coordination of heteroatoms to the metal sites in M-N-C catalysts exerts a direct modulation of the electronic distribution by forming a bond with the metal center, thereby optimizing its intrinsic oxygen reduction reaction (ORR). However, the steric hindrance introduced by axially coordinated heteroatoms limits reactant accessibility, potentially suppressing the overall catalytic activity. This study provides an HF wet etching strategy to synthesize a hollow porous ZIF-derived nitrogen-doped carbon-supported F-axially coordinated single-atom iron catalyst (F-Fe 1 @HNC), which simultaneously achieves F-axial coordination and high reactant accessibility. Consequently, the F-Fe 1 @HNC catalyst demonstrates outstanding ORR performance in both alkaline (0.919 V) and acidic (0.797 V) electrolytes. When employed as a cathode material in a zinc-air battery, F-Fe 1 @HNC achieves an open-circuit potential of 1.477 V and a power density of 256 mW cm −2 , significantly outperforming commercial Pt/C catalysts. Density functional theory confirmed that F-coordination altered the electronic distribution at Fe-N-C sites, optimizing the adsorption of oxygen-containing intermediates. This work highlights the importance of electron-withdrawing groups in creating the electron asymmetry at Fe-N-C sites, providing profound insights into designing highly efficient ORR catalysts. The F-axis coordinated Fe-N-C catalyst breaks the limitation imposed by spatial steric hindrance and significantly improves the oxygen reduction reaction (ORR) performance. Download: Download high-res image (252KB) Download: Download full-size image
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Crystals
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2026
·Vol. 16
·期 7
·471
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IF 2.9
Fufei Deng,Hui Yang,Changling Zhuang
Selective laser melting (SLM) can effectively suppress metallurgical defects inherent to conventional manufacturing; however, subsequent aging treatments essential for engineering applications introduce secondary precipitates that alter the electrochemical homogeneity of the matrix. The underlying mechanism by which such precipitation behavior governs corrosion resistance remains elusive. In this study, a Fe-30Mn-8Al-1.5C-2.5Ni steel was investigated to elucidate the corrosion morphology and electrochemical behavior of the as-built, 450 °C-aged, and 750 °C-aged specimens during immersion in a 3.5 wt.% NaCl solution. The results demonstrate that the inherent Mn microsegregation and high-density subgrain boundaries induced by SLM trigger preferential localized anodic dissolution on the surface of the as-built sample, culminating in the formation of a loose, porous manganese oxide product layer. Aging treatment at 450 °C induces extensive precipitation of κ-carbides within grain interiors and along grain boundaries, accompanied by localized depletion of Al and Mn at the phase interfaces. A pronounced micro-galvanic coupling established between the κ-carbides and the adjacent Al-depleted zones directly compromises the continuity of the passive film, thereby further deteriorating the corrosion resistance. In contrast, aging at 750 °C relieves the residual stress and eliminates the as-built elemental microsegregation. The resulting compositional homogenization of the matrix reduces the localized electrochemical driving force, which promotes a uniform reaction of Al at the surface to construct a continuous, compact Al-rich passive film, thereby sustaining the highest charge-transfer resistance during long-term immersion. This work elucidates the correlation among the intrinsic defects of SLM, aging-induced solute-depleted zones, κ-carbide precipitation, and localized micro-galvanic corrosion, providing a fundamental basis for tailoring the microstructure and corrosion resistance of additively manufactured lightweight steels.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Yuke Zheng,Yidan He,Zhiqi Zhang,Jinglin Zhang,Tong Wang,Bo Wang,Tianying Wang,Xiaojuan Zhang
To suppress the ever-increasing challenge of electromagnetic radiation pollution and exploit lightweight wave absorbers, enormous attention has been focused on aerogels. Herein, a sequence of Fe3C/Fe/NC aerogels with variable dielectric/magnetic ratios has been successfully synthesized by redox reaction, freeze-drying, and high-temperature calcination. Benefiting from the dielectric-magnetic coupling loss, optimized impedance matching, and structural advantages, the Fe3C/Fe/NC-2/PVDF composite displays optimal microwave absorption performance with a minimum reflection loss (RLmin) value of −59.03 dB at 2.53 mm under an ultralow filler loading of 3 wt %. Meanwhile, the maximum effective absorption bandwidth (EAB) of Fe3C/Fe/NC-3/PVDF composite nearly covers the entire X-band at 2.92 mm. Moreover, the radar cross-section (RCS) simulation results and infrared thermal images respectivelly verify their application potential in radar wave attenuation and the infrared stealth domain. The specific wave absorption mechanism is mainly ascribed to dielectric loss, including conduction loss and polarization loss, magnetic loss containing eddy current loss and exchange resonance, as well as multiple reflections and scattering caused by the porous structure. This study can effectively decouple the impedance matching and microwave dissipating ability by dielectric/magnetic ratio modulation and microstructure design, which is of great significance for the development of lightweight and advanced wave absorbers.
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高影响因子
CHEMICAL PAPERS
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2026
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IF 2.7
Chen Yifei,Sheng Shuqi,Liu Yuqi,Li Qiaoxia,Sun Jiazhe,Zhong Mingqiang,Qu Baiyou,Hu Caixia,Zhao Zhengping
Salen-type Schiff bases, formed by the condensation of salicylaldehyde with diamines, serve as versatile tetradentate N 2 O 2 chelating ligands owing to their tunable electronic and steric structures. Their corresponding metal complexes have been extensively applied as highly efficient and stable catalysts in diverse transformations, particularly in ring-opening polymerization (ROP) reactions. In this study, two structurally related propanediamine-derived bis-Schiff base ligands were synthesized from 3,5-di-tert-butylsalicylaldehyde and corresponding diamines, along with a series of Ce-, Fe-, and Co-Salen complexes. A thorough investigation was conducted on their catalytic performances and influencing factors in the ROP of rac-lactide. The results indicate that the catalytic performance of these Salen-metal complexes is dual-influenced by both the ligand structure and the nature of the metal center. Among the investigated catalysts, the Ce-Salen complex exhibited higher catalytic activity and comparatively favorable M n and dispersity values compared to its Fe- and Co-based counterparts under identical conditions. This comparative study provides valuable insights into the metal-center effects in Salen-type catalysts and offers rational guidance for designing efficient catalysts for PLA synthesis.
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高影响因子
ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Lili Liu,Yi Yuan,Haibo He,Junping Dong,Xitian Peng,Xiaoxia Yan,Liqiang Luo
Cu/Fe-N-C SAzymes with dual enzyme activities are rapidly synthesized via microwave. • A four-channel sensor array enables pesticide-specific fingerprint-like responses. • The array discriminates three types of pesticides (5–500 ng/mL) and their mixtures. • LDA and LOOCV confirm robust broad-spectrum screening capability toward pesticides. • High-throughput screening of multi-pesticide residues in fruits is validated. Background The widespread and excessive use of pesticides poses significant risks to both human health and ecological integrity. Inspired by the mammalian olfactory cross-response mechanisms, colorimetric sensor arrays provide a rapid, cost-effective and visual platform for multi-residue pesticide monitoring. Results Herein, we report a four-channel response array constructed from Cu-N-C and Fe-N-C single-atom nanozymes rapidly synthesized via microwave assistance. These nanozymes exhibit intrinsic laccase-like (LAC) and peroxidase-like (POD) dual enzymatic activities, which are differentially modulated by distinct pesticide classes to generate characteristic fingerprint-like responses. Integrating with linear discriminant analysis (LDA) for dimensionality reduction and visualization, this array successfully discriminates three major pesticide categories―sulfonylureas, organophosphates, and carbamates, comprising nine typical pesticides within the discrimination concentration range of 5–500 ng/mL, and further distinguishes pesticide mixtures of varying compositional ratios. Significance Leave-one-out cross-validation (LOOCV) confirms the robust broad-spectrum classification capability of the system. The practical utility of this array is demonstrated through high-throughput screening of multi-pesticide residues in fruit samples. The synergistic integration of microwave-accelerated nanozyme synthesis and multichannel colorimetric sensing establishes a versatile and reliable paradigm for universal pesticide detection in complex matrices. Two single-atom nanozymes, Cu-N-C and Fe-N-C, exhibiting both laccase-and peroxidase-like activities, are rapidly prepared by microwave-assisted synthesis. A four-channel colorimetric array is then established, in which the nanozyme activities are differentially modulated by distinct pesticide categories (sulfonylureas, organophosphates, and carbamates), producing characteristic fingerprint responses. Linear discriminant analysis (LDA) enables precise discrimination of nine pesticides and their mixtures over a concentration range of 5–500 ng/mL, with robust classification confirmed by leave-one-out cross-validation (LOOCV). This platform represents a reliable and efficient strategy for high-throughput screening of multi-pesticide residues in fruits. Download: Download high-res image (303KB) Download: Download full-size image
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MOLECULES
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2026
·Vol. 31
·期 19
·3412
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IF 5.1
Xinyao Su,Wen Guo,Qunming Zhou,Tingting Xie,Lingyan Wu,Shangyang Wang,You Fu,Shurong Li,Wei Peng,Peijun Meng
Cancer theranostics urgently demands multifunctional nanomaterials capable of simultaneously enabling high-sensitivity imaging and multimodal synergistic therapy. In this study, a three-layer core–shell nanocomposite, NaYF4:Yb,Tm@NaGdF4:Eu@NH2-MIL-53(Fe), was designed and synthesized. The NaYF4:Yb,Tm nanoparticle core provides upconversion luminescence upon near-infrared (NIR) excitation and can serve as an excitation source for photodynamic therapy. An epitaxially grown NaGdF4:Eu intermediate shell was introduced to enhance luminescence and provide T1-weighted magnetic resonance imaging (MRI) capability. The outermost NH2-MIL-53(Fe) metal–organic framework shell was subsequently coated to provide potential chemodynamic therapy (CDT) capability. The effects of the Eu3+doping concentration, reaction temperature, reaction time, and oleic acid (OA)/1-octadecene (ODE) ratio on the anisotropic growth into a dumbbell-like morphology were examined to determine the optimal conditions. Under the optimal conditions (10 mol% Eu3+, 300 °C, 60 min, OA/ODE = 4:16), core–shell nanocrystals with regular morphology, uniform size, and the strongest upconversion luminescence were obtained. Polyvinylpyrrolidone (PVP)-mediated surface functionalization successfully induced the in situ growth of the NH2-MIL-53(Fe) outer shell, thereby constructing a three-layer core–shell nanocomposite as a potential theranostic platform. Various characterizations confirmed that the resulting composite integrates upconversion luminescence, paramagnetism, and hydroxyl radical generation capability, suggesting potential for NIR-driven dual-modal imaging-guided synergistic therapy.
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Journal of Materials Research and Technology-JMR&T
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2026
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IF 7.3
Ming Zhang,Zhanbo Li,Zihao Li,Jingjing Xie,Weimin Wang,Zhengyi Fu
B 4 C–TiB 2 composites with enhanced mechanical properties were fabricated by a hydrolysis-based coating process, followed by ball milling with stainless-steel media, and consolidated by reactive hot pressing. Milling with 9Cr18 stainless-steel balls introduced Fe–Cr debris, which generated a liquid phase during sintering, promoting the formation of coarse, plate-like (Ti,Cr)B 2 solid-solution grains and a newly formed FeB phase. The optimal flexural strength of 745.7 ± 37 MPa is achieved, attributed to solid-solution strengthening and improved microstructural homogeneity. Meanwhile, the highest fracture toughness and Vickers hardness of 5.40 ± 0.28 MPa m 1/2 and 37.4 ± 1.3 GPa are achieved when the milling time is prolonged to 3 h, representing a 27% and 9.67% improvement, respectively, compared to the composites without ball-milling treatment. These results demonstrate that controlled introduction of Fe–Cr debris by stainless-steel ball milling enables simultaneous enhancement of flexural strength, fracture toughness, and hardness in B 4 C–TiB 2 composites through liquid-phase sintering.
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高影响因子
LANGMUIR
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2026
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IF 4.4
Jianguo Bai,Yanchen Zhu,Linli Qin,Hao Ren,Muhammad Wajid Ullah,Huamin Zhai
The pervasive toxicity of hexavalent chromium (Cr(VI)) to aquatic life and humans urgently demands integrated platforms capable of simultaneous detection and remediation. Herein, a bifunctional platform (CMC/PEI/MIL-53(Fe)/Nap/CP) capable of simultaneous fluorescence detection and photocatalytic removal of Cr(VI) was constructed by in situ growing MIL-53(Fe) on a carboxymethyl cellulose/polyethylenimine (CMC/PEI) matrix grafted with naphthalimide and combining it with cellulose paper (CP). In situ growth ensures the uniform dispersion of active sites, while the paper-based design enhances processability and recyclability. The protonated amino groups of PEI enrich Cr(VI) through electrostatic interactions, while MIL-53(Fe) provides photocatalytic active sites through the Fe3+/Fe2+ redox cycle. Due to the synergistic effect of adsorption and photocatalysis, the removal efficiency reached 99% within 5 h, with a reduction rate of 96%, following pseudo-first-order kinetics (k = 0.9119 h–1). Compared to other recent studies, it offers an excellent removal performance. At the same time, the enrichment effect of PEI enhanced the interaction between Cr(VI) and the naphthalimide fluorophore, achieving a detection limit of 0.34 μM and a KSV of 8.73 × 103 M–1. The good selectivity for Cr(VI) was theoretically verified through simulations by using Materials Studio software (MS). This platform provides a practical bifunctional platform for efficient fluorescence detection and removal of Cr(VI), with broad application prospects in the fields of environmental monitoring and water treatment.
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高影响因子
Journal of Materials Chemistry A
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2026
·
IF 9.2
Yan Liu,Haoqing Lin,Jingnan Zou,Tenghui Yuan,Zhuohao Wang,Hang Bao,Ali Abdelhafiz,Bote Zhao
Protonic ceramic electrochemical cells (PCECs) are promising for renewable energy conversion, yet their commercialization is hindered by the limited durability and thermal expansion mismatch of commonly used Co-based air electrodes. Although Fe-based alternatives offer better thermal compatibility, they suffer from inferior oxygen reduction kinetics. Herein, we report a surface decoration strategy to address these challenges by decorating a Ba-enriched Ba1.02FeO3−δ (B1.02F) scaffold with a Co-based catalyst coating. Electron microscopy and spectroscopic characterization confirm the formation of a composite surface coating comprising Co3O4 and in situ formed Ba–Co–O species. The resulting catalyst-coated B1.02F electrode (B1.02F-CC) effectively combines the thermomechanical robustness of the Fe-based backbone with the high catalytic activity of Co species. Electrochemical analyses reveal that the catalyst coating markedly accelerates both oxygen surface exchange and charge-transfer kinetics. Consequently, single cells based on the B1.02F-CC electrode deliver a maximum power density of 1.46 W cm−2 and sustain stable operation for 600 h at 650 °C. Additionally, the single cell maintains reliable performance for 17 thermal cycles (300–650 °C) with negligible degradation. This work validates a robust surface decoration strategy to reconcile the trade-off between electrocatalytic activity and thermomechanical stability, providing a viable pathway toward durable, high-performance air electrodes for PCECs.
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高影响因子
CATALYSIS LETTERS
·
2026
·Vol. 156
·期 6
·150
·
IF 2.5
An Bote,Song Xinran,Wang Shu,Yang Lu,Qu Peifan,Zhang Yubin,Liu Yan,Nan Yanli
Non-noble metal single-atom catalysts (SACs) have emerged as promising alternatives to Pt-based catalysts for the oxygen reduction reaction (ORR) due to their high atomic utilization and low cost. Nevertheless, the facile aggregation of metal atoms during synthesis severely reduces the density of active sites, thereby restricting their practical application in metal-air batteries. Herein, we fabricated a highly dispersed Fe single-atom catalyst (Fe-N-C) anchored on honeycomb-structured carbon (HCC). The synergistic effect of low iron content, physical confinement of honeycomb carbon, and chemical anchoring of nitrogen sites effectively inhibits metal atom aggregation and maximizes the atomic dispersion of Fe active sites. Benefiting from the ordered honeycomb porous structure and high atomic utilization, the as-synthesized Fe-N-C exhibits an outstanding half-wave potential of 0.875 V even at a low Fe loading. Notably, when applied as the air cathode in a flexible solid-state zinc-air battery, this catalyst delivers a peak power density of 160.7 mW cm − 2 , outperforming most reported non-noble metal ORR catalysts to date. This work provides a feasible strategy for the fabrication of highly dispersed single-atom catalysts for high-performance flexible energy conversion devices. Graphical The alternative text for this image may have been generated using AI.
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ChemCatChem
·
2026
·Vol. 18
·期 12
·e70865
·
IF 4.1
Yacong Yang,YaKun Qu,Zhixiong Yang,Yu Wu,Xiaoguang Zhao,Haibo Yin,Yuning Huo,Zongli Xie
Photocatalytic reduction of nitrate (NO 3 − ) to ammonia (NH 3 ) has garnered growing attention as a sustainable route for simultaneous nitrate pollution remediation and value-added ammonia synthesis under ambient conditions. However, its efficiency remains severely limited by the intrinsically high structural stability of nitrate anions and inefficient charge-carrier utilization. In this study, a Fe-doped Bi/Bi 2 WO 6 photocatalyst (H-Fe-B/BWO) is constructed via a facile hydrothermal method followed by calcination in a reducing atmosphere. The experimental results reveal that the optimized H-Fe-B/BWO exhibits significantly enhanced photocatalytic nitrate reduction performance, achieving an NH 3 production rate of 2.419 mmol g cat −1 h −1 with a high selectivity of 99.3% in the presence of ethylene glycol (EG), representing an approximately 4.5-fold improvement compared with pristine Bi 2 WO 6 . The remarkable enhancement originates from the synergistic effect between Lewis acidic sites generated by Fe dopants with unsaturated coordination environments and the surface plasmon resonance of metallic Bi, which collectively facilitates nitrate activation and improves charge-carrier separation and utilization. This work provides a rational strategy for designing efficient photocatalysts for selective NO 3 − -to-NH 3 conversion under environmentally benign conditions, contributing to sustainable nitrogen management and circular economy-driven resource recovery. Graphical The enhanced photocatalytic nitrate-to-ammonia conversion over H-Fe-B/BWO can be summarized as a cooperative process involving surface reaction chemistry and charge-carrier dynamics. Fe dopants introduced into the Bi 2 WO 6 lattice generate coordinatively unsaturated metal centers, which function as Lewis acidic sites capable of strongly interacting with nitrate anions through O-metal coordination. This interaction promotes nitrate adsorption and induces structural distortion of the NO 3 − species, thereby lowering the activation barrier for the initial N─O bond cleavage. Simultaneously, reductive calcination leads to the in situ formation of metallic Bi on the catalyst surface, which serves as a plasmonic component under visible light irradiation. The surface plasmon resonance of metallic Bi not only broadens the light-harvesting capability but also enhances local electromagnetic fields, facilitating the separation and migration of photogenerated charge carriers. As a result, photogenerated electrons are more efficiently delivered to nitrate species adsorbed at Lewis acidic sites, enabling a sustained multi-electron reduction pathway toward ammonia while suppressing competing reactions. The intimate coupling between nitrate activation at Fe-derived Lewis acidic sites and plasmon-induced charge utilization accounts for the high activity and selectivity observed over the H-Fe-B/BWO photocatalyst.
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