Foods
·
2026
·Vol. 15
·期 16
·2886
·
IF 6
Luyao Wang,Xuelian Wu,Yizi Mahai,Wenjing Ma,Lin Zhou,Jing Zhang,Xinhui Wang,Jing Li
Monitoring dopamine (DA) in pork can provide useful information for assessing meat freshness and quality deterioration. In this work, an Fe@N-S-O-C nanocomposite was fabricated as an electrode modifier for DA determination. The Fe@N-S-O-C nanocomposite was synthesized via precipitation followed by calcination using melamine and ferrous sulfate as precursors. The crystal structure, surface chemical composition, and morphology were characterized by XRD, XPS, SEM, and TEM. The Fe@N-S-O-C-modified glassy carbon electrode (Fe@N-S-O-C/GCE) was then evaluated for its electrocatalytic performance toward DA. Under the optimized conditions (pH 6.0), the sensor showed linear responses to DA over 1–65 and 65–220 μM. The sensitivities for these two ranges were 4.357 and 1.685 μA μM−1cm−2, respectively, with an LOD of 40 nM. In addition, the Fe@N-S-O-C/GCE showed excellent reproducibility, good repeatability, and strong anti-interference capability against common coexisting substances. After 30 days of storage, 82.74% of the initial current response was retained by the same electrode. Practical applicability of the sensor was verified in pork samples, with recoveries of 95.97–106.73%. These results demonstrate that the Fe@N-S-O-C/GCE sensor offers a reliable and effective platform for DA detection in complex food matrices.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Jiacai Xiong,Zhimin Zou,Yu Bai,Yutao Xing,Chunhai Jiang
Decorating transition metal oxide in combination of carbon coating has been verified as an effective way to boost the cycling stability of SiO anode. However, the weak bonding between the transition metal oxides and SiO matrix tends to weaken the modification effect. Herein, SiO@C anode is modified with in situ formed Mn 2 SiO 4 interphase through solid-state reaction between SiO and the hydrothermally grown MnO 2 at the presence of resorcinol-formaldehyde (RF) resin coating layer. The Mn 2 SiO 4 interphase buffers the volume change of the composite anode through a reversible conversion reaction, leading to greatly enhanced cycle stability. For the optimized SiO/Mn 2 SiO 4 @C anodes, capacity retention ratios higher than 84% are preserved after 500 cycles at 1.0 A g −1 , significantly outperforming that of the SiO@C anode (65%). This work provides a facile strategy to fully exploit the modification effect of transition metal oxide on SiO-based anode, thus paving the way for high energy density Li-ion batteries with superior cycling stability.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2026
·Vol. 42
·期 31
·22950-22957
·
IF 4.4
Chen Nannan,Yuan Qingle,Liu Qin,Zhang Chao,Wu Zhengcui,Bi Wentuan
Single-atom catalysts (SACs) hold great promise for the
electrochemical
reduction of CO 2 to CO; however, the high selectivity is
typically restricted within a narrow potential window, limiting their
practical implementation. In this study, Ni–N–C catalysts
were supported on ordered and disordered carbon nanofiber membranes
(denoted as o-NiNC and d-NiNC, respectively) via electrospinning to
elucidate the effect of nanofiber alignment on CO 2 reduction
activity. The results demonstrate that o-NiNC catalysts allow for
spatially uniform H + /CO 2 delivery and consumption,
thereby mitigating the selectivity variations arising from uneven
spatial distribution of reactants. As a result, the o-NiNC catalysts
achieve a CO Faradaic efficiency (FE) of 98.5% at −1.0 V and
maintain an FE above 90% across a broad potential range (−0.6
to −1.6 V). This work provides new insights into the rational
design of high-performance CO 2 reduction electrocatalysts
through geometric engineering.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Dali Wei,Zhejie Chen,Xuezhu Wang,Zhou Fang,Qianru Li,Junqin Yu,Xiaoyu Sun,Xuan Wang,Linxin Tian,Bo Tian,Jia Ge,Yu Yang,Weihong Tan
An oxidase-mimicking Cu-N/C single-atom nanozyme is developed for colorimetric detection of isoniazid (INH). • A H 2 O 2 -free “signal-off” sensing platform is established, enabling simplified operation and enhanced robustness. • A low detection limit of 0.16 μM is achieved, with successful validation in real-world samples and excellent agreement with HPLC. • Integration with a paper-based chip and a smartphone enables on-site INH detection. A colorimetric sensing platform based on Cu-N/C single-atom nanozymes (Cu-N/C SAzyme) was developed for the sensitive and selective detection of isoniazid (INH), a first-line anti-tuberculosis drug. The Cu-N/C SAzyme exhibits intrinsic oxidase-mimicking activity, generating hydroxyl radicals (⋅OH) and superoxide anion radicals (O 2 · − ) to synergistically oxidize colorless 3,3′,5,5′-tetramethylbenzidine (TMB) into its blue oxidized form (oxTMB) without the addition of H₂O₂. Upon introduction of INH, its strong reducing property rapidly reduces oxTMB and scavenges ·OH and O 2 · − radicals, leading to a concentration-dependent decrease in absorbance at 652 nm. The change in absorbance shows a good linear relationship with INH concentration over the range of 1–50 μM, with a detection limit of 0.16 μM. The method exhibits high reproducibility (RSD < 5%) and excellent selectivity, and has been applied to determine INH in pharmaceutical tablets and human serum samples, achieving recoveries of 95.1–104.7%. The proposed method shows good agreement with the standard HPLC method. Furthermore, a portable point-of-care testing (POCT) platform was established by integrating the Cu-N/C SAzyme with a paper-based chip and smartphone. This platform achieved a detection limit of 0.65 μM over the same linear range (1–50 μM), demonstrating its potential for on-site INH screening. Download: Download high-res image (146KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
He Lu,Qiuhui Shi,Ling Wang,Haoyong Yin,Hui Wang,Xiuwei Ma,Shengji Wu
A reconstructed Mo₂C/NCNTs interface was developed for simultaneous AA, DA, and UA sensing. • Ni removal enlarged mesoporous channels and exposed more accessible Mo₂C active sites. • Mo valence modulation promoted interfacial charge transfer and electrocatalytic oxidation. • Mo₂C/NCNTs/GCE delivered resolved oxidation peaks with low detection limits. • The sensor showed good selectivity, stability, and applicability in urine and serum samples. The simultaneous electrochemical determination of ascorbic acid (AA), dopamine (DA), and uric acid (UA) is important for biological analysis, but it remains challenging because of their close oxidation potentials and coexistence in complex samples. Herein, a reconstructed Mo₂C/NCNTs interface was developed as an efficient sensing platform through a pyrolysis–acid etching strategy. During pyrolysis, Ni nanoparticles promoted the in situ growth of nitrogen-doped carbon nanotubes (NCNTs), while Mo species were converted into Mo₂C, producing a closely integrated Ni/Mo₂C/NCNTs precursor. Subsequent selective removal of Ni generated Mo₂C/NCNTs with preserved tubular architecture, enlarged mesoporous channels, increased pore volume, exposed Mo₂C active sites, and redistributed Mo valence states. These structural and electronic features improved analyte diffusion, interfacial charge transfer, and electrocatalytic oxidation. The Mo₂C/NCNTs-modified glassy carbon electrode exhibited well-resolved oxidation peaks and enhanced current responses for AA, DA, and UA. The detection limits were 3.2 μM for AA, 0.11 μM for DA, and 0.15 μM for UA. The sensor also showed good selectivity, repeatability, reproducibility, and long-term stability. Satisfactory recoveries obtained in urine and serum samples further confirmed its applicability for practical analysis. This work provides an effective interface-regulation strategy for constructing Mo₂C-based electrochemical sensors for multi-analyte detection in biological matrices Download: Download high-res image (200KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Ruite Gu,Tingyu Yan,Zeyu Hao,Huanlu Tu,Shansheng Yu,Xiaoying Hu,Hongwei Tian
The preparation of highly efficient, stable, and cost-effective catalysts to address the complex oxygen reduction reaction (ORR) in zinc-air batteries remains a significant challenge. Herein, a surface modification strategy is employed to uniformly encapsulate an Fe-N-C matrix with cobalt-coordinated conjugated organic polymers containing Schiff base structures, successfully yielding a highly active CB(cobalt-coordinated Schiff-base polymer)@Fe-N-C composite catalyst with coexisting cobalt coordination polymers and iron-nitrogen-carbon structures. In alkaline electrolytes, the CB@Fe-N-C catalyst exhibits outstanding catalytic activity (E 1/2 = 0.93 V) and stability, which are attributed to its highly conductive, structurally stable composite architecture with abundant active sites. In a zinc-air battery (ZAB), CB@Fe-N-C exhibits remarkable power density, surpassing the Pt/C benchmark. This work offers an effective synthetic strategy for preparing electrocatalysts with excellent ORR performance in zinc-air batteries.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Hongrui Wang,Xiangyu Zhang,Huan Guo,Beibei Ma,Bingzhu Wang,Shaoming Dong,Jianjun Sha
SiC f /SiC composites serve as key candidate materials for hot-end parts in the aerospace domain. However, the damage behavior of SiC f /SiC composites under high-temperature water-oxygen environments and its impact on mechanical properties remain to be further clarified. In this work, the microstructural evolution and residual mechanical properties of mini-SiC f /SiC composites oxidized in a 90% O 2 + 10% H 2 O atmosphere at temperatures from 1000 to 1600 °C were investigated. The residual strength of mini-SiC f /SiC composites exhibits a non-monotonic temperature dependence, initially increasing at 1200 °C and subsequently decreasing at temperatures above 1400 °C. The primary mechanisms are as follows: at 1200 °C, the oxidation products of the BN interphase enhance the interfacial bonding strength, thereby improving the mechanical strength; whereas at temperatures ranging from 1400 °C to 1600 °C, SiC grain growth emerges as the dominant factor, leading to the deterioration of mechanical properties.
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2026
·
IF 5.2
Meng-Yun Zhao,Meng-Han Li,Guo-Zhi Han
In this paper, we report a new mild and environmentally friendly approach for the direct C–N coupling of aromatic aldehydes with amines at room temperature to synthesize amides in which H2O2 serves as the oxidizing agent without the need for a catalyst. Investigation into substrate scope showed that the strategy exhibits good functional group tolerance. Under the optimal reaction conditions, the direct C–N coupling of aromatic aldehydes with secondary amines affords a series of amide products with moderate to high yields of 67%–95%, along with the sole byproduct of water. Additionally, a maximum isolated yield of 90% is achieved in the gram-scale reaction. Finally, a plausible reaction mechanism is proposed via a series of parallel experiments.
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2026
·
IF 15
Decai Wang,Tong Zhou,Yalan Cui,Chen Bao,Shuaiqi Yuan,Chengchen Wu,Qian Liu,Chao Liu,Jiannan Hu,Mingrong Liu,Ziling Li,Xinyue Ma,Yunfei Zhu,Jingjing Sun,Shuyun Xu,Yuzhou Wu
The persistent opening of the mitochondrial permeability transition pore (mPTP) plays a critical role in bronchial asthma pathogenesis. The ATP synthase c subunit (c subunit) constitutes a core component of mPTP. A novel c subunit inhibitor, 1,3,8-triazaspiro [4.5] decane derivatives (PP10), effectively suppresses pathological mPTP opening without impairing ATP synthesis. Although intraperitoneal PP10 administration mitigates airway inflammation in asthmatic mice, its hydrophobicity hinders inhaled delivery to airway epithelial mitochondria, requiring penetration of the mucus layer, cell membrane, and mitochondrial outer membrane. To overcome this, we developed inhalable human serum albumin-triphenylphosphine-polyethylene glycol-PP10 nanoparticles (HSA-TPP-PEG-PP10 NPs). These NPs demonstrated efficient mucus penetration, high drug loading, mitochondria-targeting capability, and biosafety. They suppressed house dust mite/lipopolysaccharide (HDM/LPS)-induced mPTP opening, inhibited the mitochondrial DNA (mtDNA)-cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway, reduced inflammation in human bronchial epithelial (HBE) cells, and alleviated airway inflammation in asthmatic mice upon inhalation.
✓ 已验证
DOI
PubMed
高影响因子
IONICS
·
2026
·
IF 3.4
Zhang Lingwen,Qin Wenqing,Long Jifa,Xiao Qi,Huang Suping
The persistent shuttle effect of lithium polysulfides (LiPSs) remains a major bottleneck hindering the widespread commercialization of lithium-sulfur (Li-S) batteries. Among the proposed solutions, MgO@carbon (MgO@C) composite interlayers have emerged as a highly effective strategy for suppressing LiPS migration through chemical adsorption and catalytic conversion. However, conventional synthesis routes for these materials often rely on costly and intricate chemical processes, limiting their scalability. In this study, we present an eco-friendly and cost-effective approach by fabricating MgO@C composites from dye sludge-derived carbon. The resulting nanoporous MgO@C interlayer exhibits strong hydrophilicity and abundant active sites, enabling efficient polysulfide immobilization via chemisorption while simultaneously accelerating sulfur redox kinetics. This dual functionality not only mitigates the shuttle effect but also enhances battery capacity and cycling stability - delivering exceptional electrochemical performance. This work offers a strategic approach for converting waste into valuable materials, paving the way for the scalable fabrication of high-performance interlayers in practical Li-S battery applications.
✓ 已验证
DOI
高影响因子
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
·
2026
·
IF 2.2
Junjie Shi,Tongzhi Liu,Yandong Li,Yumo Zhai,Bin Yu,Jianbo Zhang,Min Chen,Jing Xu,Jingxiong Gao,Shuyi Wu,Ning Wang,Yun Huang,Jianzhong Li
Phase equilibria in the CaO-SiO 2 -TiO 2 system with 5-10 wt% Fe 2 O 3 addition were experimentally determined at 1300 °C in air. • Isothermal sections of the pseudo-quaternary system were constructed, supplying key experimental data for thermodynamic database optimization. • Fe 2 O 3 addition alters the liquid-CaTiO 3 phase equilibrium relationship and affects the distribution of Ti-bearing primary phase fields. • Experimental phase equilibrium data provide valuable information for thermodynamic database optimization. • The results provide a thermodynamic basis for optimizing Fe 2 O 3 addition in the selective crystallization of Ti-bearing blast furnace slag. Optimizing the Selective Crystallization and Phase Separation (SCPS) process is essential for improving the resource utilization of titanium-bearing blast furnace slag. However, the influence of Fe 2 O 3 addition on the phase equilibria of the CaO-SiO 2 -TiO 2 system remains insufficiently understood, particularly in Fe 2 O 3 -containing titanium-bearing slag systems. In this work, phase equilibria in the CaO-SiO 2 -TiO 2 system with 5 and 10 wt% Fe 2 O 3 additions were systematically investigated at 1300 °C in air using high-temperature equilibrium-quenching experiments, followed by characterization with XRD, SEM-EDS, and EPMA, along with thermodynamic calculations. Special attention was given to the influence of Fe 2 O 3 on the liquid-phase region and the liquid-CaTiO 3 two-phase coexistence region. The results show that the liquid region expands with increasing Fe 2 O 3 content, confirming its strong fluxing effect through stabilization of the liquid slag phase. Moreover, Fe 2 O 3 addition alters the liquid-CaTiO 3 phase equilibrium relationship and affects the distribution of Ti-bearing primary phase fields. Significant discrepancies were observed between the experimentally determined liquid-phase boundaries and FactSage predictions, with FactSage predicting a smaller liquid-phase region than that determined experimentally. The phase equilibrium data obtained in this study provide essential experimental information for thermodynamic model refinement of Fe 2 O 3 -containing CaO-SiO 2 -TiO 2 systems and offer theoretical guidance for optimizing the SCPS process and titanium-rich slag utilization.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Yaru Li,Jun wang,Yaojin Duan,Tao Jin,Yukun Bai,Haoran Shi,Ihar Razanau,Yongpeng Ren,Kunming Pan
Ru-decorated graphitic carbon-encapsulated Ni₃Fe particles are embedded in hollow carbon nanofibers as an electrocatalyst. • Graphitic carbon enhances alloy conductivity and hollow porous CNFs facilitate electrolyte penetration and bubble detachment. • Ru nanoparticles reconstruct electronic structure and optimize HER/OER intermediate Gibbs free energies. • The Ru/Ni₃Fe@C/CNF composite accelerates both OER and HER kinetics and achieves outstanding long‑term catalytic stability. Nickel‑iron intermetallic Ni 3 Fe represents a low-cost oxygen evolution reaction (OER) electrocatalyst, yet sluggish hydrogen evolution reaction (HER) kinetics, severe particle aggregation and inferior alkaline stability greatly limit its bifunctional water-splitting application. Hierarchical hollow N-doped carbon nanofiber supported Ru/Ni 3 Fe@C core-shell heterostructures (Ru/Ni 3 Fe@C/CNF) are fabricated via coaxial electrospinning, high-temperature carbonization and liquid-phase Ru reduction. Hollow N-doped carbon nanofibers serve as conductive porous scaffolds, where graphitic carbon shells encapsulate Ni 3 Fe nanoparticles and evenly dispersed Ru nanoparticles form heterointerfaces for electronic regulation. Characterizations confirm carbon-triggered Ni 3 Fe lattice expansion, strong Ru-Ni/Fe charge transfer, and in-situ formation of NiOOH/FeOOH active sites under OER conditions. Electrochemical measurements in 1 M KOH deliver 61 mV HER and 240 mV OER overpotentials at 10 mA cm −2 , outperforming Ni 3 Fe@C/CNF and commercial Pt/C/RuO 2 . Elevated double-layer capacitances (38.9 mF cm −2 for HER, 37.3 mF cm −2 for OER) and lowered charge transfer resistance demonstrate abundant exposed active sites. Benefiting from carbon confinement, 83% and 80% initial activity are maintained after 40 h HER and OER operation, respectively. The symmetric electrolyzer attains a low cell voltage of 1.64 V at 10 mA cm −2 with 92% activity retention over 100 h. Density Functional Theory (DFT) calculations confirm combined carbon encapsulation and Ru decoration upshift Ni 3 Fe d-band center, reduce water dissociation barrier to 0.46 eV and balance H ⁎ /OOH ⁎ adsorption to accelerate catalytic kinetics. This work develops an integrated interface engineering strategy for high-efficiency durable non-noble bifunctional electrocatalysts. The catalyst consists of Ru nanoparticles decorated on graphitic carbon-encapsulated Ni 3 Fe alloy nanoparticles embedded in hollow porous carbon nanofibers (CNFs). Benefiting from its optimized electronic structure, boosted charge transfer capability, and favorable structural stability, the Ru/Ni 3 Fe@C/CNF catalyst demonstrates impressive dual functionality in both OER and HER. Download: Download high-res image (116KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）