JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Bei-Chen Gao,Yu Tian,Run-Ping Liu,Yi-Xin Wang,Yang You,Wei-Ming Guo,Hua-Tay Lin
A two-step method including low-temperature pretreatment and high-temperature homogenization was developed to prepare high-purity (Ti 0.2 V 0.2 Ta 0.2 Nb 0.2 Hf 0.2 )(C 0.75 N 0.25 ) powder. In the first step, the reaction mixture was heated to 1450 ℃ to form intermediate carbonitride phases through carbothermal reduction-nitridation, and the second step at 1700 ℃ produced a single-phase high-entropy carbonitride. The powder prepared by single-step treatment at 1750 ℃ contained 2.28 wt% nitrogen and 0.18 wt% oxygen. In contrast, the two-step powder exhibited higher nitrogen content (2.45 wt%) and lower oxygen content (0.09 wt%), and the formation of a complete single-phase solid solution enabled accurate calculation of its composition (Ti 0.2 V 0.2 Ta 0.2 Nb 0.2 Hf 0.2 )(C 0.78 N 0.21 O 0.01 ). The ceramic prepared from the two-step powder achieved 99.8% relative density, with an average grain size of 4.58 ± 0.32 μm, a Vickers hardness of 22.73 ± 0.51 GPa, and a fracture toughness of 3.16 ± 0.30 MPa·m 1/2 , whereas the single-step ceramic reached only 86.5% relative density.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Zaohong Zhang,Jing Yang,Dmitry V. Bavykin,Carlos Ponce de León,Kai Zhang,Yong-Wei Zhang,Jia Hong Pan
Nanostructured silicon (Si) is a highly promising anode material for next-generation lithium-ion batteries (LIBs) due to its ultra-high theoretical capacity (Li 22 Si 5 , ∼4200 mAh g − 1 ), yet its practical application is hindered by poor conductivity and drastic volume expansion (300–400%). Here, Si nanoparticles are in situ encapsulated within a ZIF-8 framework, guided by a pre-applied carbon coating, forming a porous core–shell architecture that simultaneously enhances ionic/electronic transport and buffers volumetric changes. The resulting Si@C@ZIF anode delivers a reversible capacity of 1030 mAh g − 1 after 500 cycles at 1.0 A g − 1 . In a full cell with LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811), 76.8% capacity retention is maintained at 0.5 C over 260 cycles. Post-cycling analysis reveals a robust solid electrolyte interphase (SEI) enriched in Li 3 N and LiF. Density functional theory (DFT) calculations indicate that preferential LiPF 6 adsorption facilitates conductive SEI formation, accelerating Li + diffusion and enhancing interfacial stability, demonstrating a low-cost route to highly durable Si/C nanocomposite anodes for practical high-energy LIBs.
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ChemistrySelect
·
2026
·Vol. 11
·期 15
·e07225
·
IF 2.3
Feng Zhou,Danquan Bi,Xinzhi Liu,Suhaidi Shafie,Xiongtao Yu,Danfeng Qin
Environmental analysis and food safety control still depend on quick, precise nitrite monitoring. In response, the current work uses a one-step hydrothermal process to create a hollow SiO 2 @C core-shell material, which is then integrated into an electrochemical nitrite sensor. X-ray diffraction, high-resolution transmission electron microscopy, and scanning electron microscopy all confirm the homogeneous carbon coating and hollow structure, creating a strong foundation for charge transfer. The SiO 2 @C-modified electrode maintains linearity between 0.5 and 4650.0 µM and achieves a detection limit of 0.17 µM. Strong operational stability is demonstrated by the high repeatability (RSD = 1.23%) and the retention of 90.66% of the initial signal after 17 days at 4°C. Reliable performance in complex food matrices is confirmed by standard-addition assays in sausage and fermented bean curd, which provide recoveries of 95.53–100.03% and 98.15–99.83%, respectively. These findings establish the hollow SiO 2 @C sensor as a useful, highly sensitive instrument.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2026
·
IF 3.1
Zhang Jun,Liu Boyu,Luo Laizheng,Liang Pingjuan,Li Jinzhi,Jiang Lingying,Chen Xingyi,Tang Huan,Chen Longxiang,Jin Meng,Wu Weimin,Lu Shi-Yu
The development of cost-effective, highly active and durable Pt-based electrocatalysts for oxygen reduction reaction (ORR) remains a major challenge to advancing proton exchange membrane fuel cells (PEMFCs). Hollow nanoarchitecture loaded with metal alloys has been widely used as a nanoreactor to regulate electronic structure of active sites and enhance reactant enrichment. In this study, PtCo alloy nanoparticles are uniformly dispersed on both outer and inner surfaces of hollow TiN spheres and carbon composite support (Pt 3 Co/H-TiN-C). The optimized Pt 3 Co/H-TiN-C nanoreactor delivers a mass activity of 64 mA mg Pt −1 and a specific activity of 0.122 mA cm Pt −2 at 0.90 V vs. RHE in 0.1 M HClO 4 solution. Furthermore, the Pt 3 Co/H-TiN-C nanoreactor enables an effective four-electron transfer pathway with high selectivity and low H 2 O 2 yield (less than 3%) toward ORR process. After accelerated durability tests, the half-wave potential of Pt 3 Co/H-TiN-C shows a decay of only 24 mV after 10,000 cycles, markedly smaller than Pt/C catalyst (74 mV). The enhanced durability and ORR kinetics of Pt 3 Co/H-TiN-C are attributed to the synergistic effect of strain effect in PtCo alloy, strong interactions between PtCo and H-TiN-C, and nanoreactor architecture. These features not only regulate the Pt electronic structure, increasing the Pt 0 content, but also expose more accessible active sites on the outer/inner surfaces to accelerate charge/mass transport. Moreover, alloyed Co atom suppress the dissolution of Pt, endowing an improved durability. This work provides a new strategy for designing efficient and durable Pt-based ORR catalysts for PEMFCs.
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JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Wanting Zhou,Kaiyang Zheng,Ranxiao Ao,Chenyu Yan,Yihui Li,Aidong Tang,Huaming Yang
The commercialization of lithium-sulfur (Li–S) batteries is primarily hindered by the polysulfide shuttle effect and sluggish reaction kinetics. Engineering a host material that synergizes efficient polysulfide confinement with high electrical conductivity, through a simple and potentially scalable process, remains a key challenge. Here, we demonstrate a facile, one-pot hydrothermal strategy to cost-effectively convert abundant natural halloysite clay into a mesoporous silicon-carbon composite (MHSC). This process effectively establishes an intimate Si – C bonded interface between the conductive carbon network and the polar silica framework, inherited from the mineral precursor. The resulting MHSC host exhibits excellent electronic conductivity (0.011 S cm −1 ) and strong polysulfide adsorption. When evaluated as a sulfur cathode, the MHSC/S composite delivers a high initial capacity of 1213 mAh·g −1 at 0.2 C and, more importantly, exceptional long-term stability with a negligible capacity decay rate of only 0.089% per cycle over 700 cycles at 1 C. This work provides a commercially viable and environmentally benign route for manufacturing high-performance Li–S battery cathodes by upcycling natural clay resources.
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Nature Communications
·
2026
·
IF 18.1
Li Chuan,Ma Xintao,Li Dedi,Zhang Rong,Cui Huilin,Zhang Shaoce,Huang Zhaodong,Nian Qingshun,Yang Hui,Zhi Chunyi
Graphite positive electrode-based anion-intercalation aqueous dual-ion batteries using bis(trifluoromethanesulfonyl)imide anion intercalations show the potential because of the high discharge plateau (>1.4 V vs. the standard hydrogen electrode at 25 °C ± 2 °C) for anion chemistry. However, currently, the electrochemical performance of aqueous dual-ion batteries based on bis(trifluoromethanesulfonyl)imide anion intercalation can only be achieved in highly concentrated salt electrolytes. This dependence on high anion concentration to activate intercalation inevitably leads to high costs and prevents operation at low temperatures (e.g., < −20 °C). In this context, we explore a hydrogel electrolyte rich in dipole molecules, incorporating only 1 M lithium bis(trifluoromethanesulfonyl)imine and 2 M zinc chloride, with expanded electrochemical stability windows (>4.6 V at −40 °C) to activate bis(trifluoromethanesulfonyl)imide anion insertion into the graphite positive electrode through high-voltage scanning to 3.0 V. The assembled aqueous dual-ion batteries based on bis(trifluoromethanesulfonyl)imide anion intercalation demonstrate high discharge plateaus of 1.9 V at −20 °C and 1.7 V at −40 °C, along with a specific energy of 595 Wh kg −1 (normalized to the 1 mg cm −2 of the graphite positive electrode).
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·
IF 12.2
Zongyang Ya,Dong Xu,Xiaohui Tang,Yu Zheng,Zixuan Zhang,Mei Li,Hua Wang,Shengbo Zhang
Photocatalytic conversion of polyols and nitrogen-containing small molecules into value-added chemicals via C–N coupling reaction represents a promising route for dual waste treatment of waste plastics and wastewater. However, precisely controlling the coupling pathway of key intermediates to achieve high product selectivity remains a significant challenge. Here, we report a WO3 photocatalyst that enables the highly selective synthesis of glycine from waste poly(ethylene terephthalate) (PET)-derived ethylene glycol (EG) and nitrate, achieving a remarkable glycine yield of 1.87 mmol gcat–1 h–1 with 89% selectivity, which significantly outperforms conventional TiO2-based systems. Mechanistic studies indicate that the high selectivity stems from the distinct reaction pathway on WO3, where glycolaldehyde is stabilized as the key intermediate to efficient C–N coupling with NH4+ derived from NO3– reduction. This contrasts with the TiO2-catalyzed pathway that proceeds via the more oxidized glyoxal, which readily undergoes overoxidation to the byproduct formic acid. By using different plastic/biomass-derived feedstocks (methanol, ethylene glycol, and glycerol), this process can be expanded to the scale synthesis of various C–N compounds. Preliminary techno-economic analysis and life-cycle assessments suggest the potential economic viability and environmental benefits of this process. This work establishes a sustainable photocatalytic strategy for the valorization of waste plastic and wastewater by regulating key intermediates to enable a selective C–N coupling pathway.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yuxin Xu,Jiahao Zhu,Yi Zhang,Zhong Zhang,Qingwei Li,Dan Liu,Haitao Niu,Hua Zhou
Personal protective textiles showing high-performance electromagnetic wave absorption (EWA) along with multiple functions demonstrate considerable application prospects in daily life. Herein, a single-step, environmentally friendly, water-based fabrication strategy is developed to produce a durable and highly efficient EWA coating on PET fabrics, simultaneously integrating antibacterial, antistatic, and high-performance water/sweat-wicking properties. This multifunctional coating is realized through the synergistic interaction of its coating constituents including the incorporation of Co@C nanoparticles (NPs) derived from Co-based zeolitic imidazolate frameworks (ZIF-67), the in situ reduction of graphene oxide (GO) facilitated by fatty acid methyl ester ethoxylate sodium sulfonate (FMES), and the 3-glycidyloxypropyl triethoxysilane (GPTMS)-mediated cross-linking. The resulting Co@C/rGO/GPTMS-coated PET fabric exhibits excellent moisture-wicking and water adsorption capacity. Benefiting from the combined effects of conduction loss, interfacial polarization loss, and a hierarchical surface structure, it demonstrates outstanding EWA performance with an RLmin of −56.5 dB and EABmax covering the entire X-band. The incorporation of Co@C and rGO within the coating matrix imparts robust antibacterial and antistatic properties, achieving an antibacterial rate of over 99% against both Staphylococcus aureus and Escherichia coli, along with a significant reduction in static voltage to 130 V and a short half-life of merely 0.01 s.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 5
·e70838
·
IF 4.2
Sheng Li,Rui Zhang,Min Chen,Junjie Shi,Jing Xu,Yueyao Liu,Xiao Zhang,Zhuoying Lian,Yuyan Wu,Yandong Li,Jianzhong Li
Understanding the phase equilibria of the Yb 2 O 3 -MgO-SiO 2 system is crucial to reveal the coating-medium interaction mechanism and guide composition design. In the present work, the isothermal section of the Yb 2 O 3 -MgO-SiO 2 system at 1600°C in air was systematically constructed using high-temperature equilibrium quenching experiment combined with XRD, SEM, and EPMA analyses. Ten phase regions were identified, including one liquid-phase region, four two-phase regions, and five three-phase regions. Comparative analysis with the binary subsystems highlights the restricted solubility of Yb 2 O 3 in MgO (1.61 wt%) and the associated asymmetry, which are rationalized by crystallographic constraints and defect energetics. This study fills a critical knowledge gap and provides essential phase equilibria data for designing advanced Yb-silicate coatings with enhanced CMAS and corrosion resistance, as well as for developing MgO-based refractory materials.
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POLYMER TESTING
·
2026
·
IF 6.4
Mei Yin,Jiamei Luo,Minqiang Jiang,Yong Liu,Youwei Zhang,Hui Zhang,Jianyong Yu
The widespread use of highly integrated smart electronic devices has led to serious electromagnetic pollution, making electromagnetic interference (EMI) shielding materials a crucial solution for controlling electromagnetic radiation. This study utilizes electrostatic self-assembly between negatively charged Co/C@TNF felts and positively charged cetyltrimethylammonium bromide (CTAB) functionalized multiwall carbon nanotubes (fMWNT) to construct a unique three-dimensional (3D) structure within epoxy resin (EP). Due to electrostatic interactions, fMWNT were uniformly loaded on Co/C@TNF felts. These well-dispersed fMWNT serve as bridges, connecting adjacent Co/C@TNF felts and EP, forming a more efficient conductive network, thereby obtaining composites with enhanced mechanical properties and superior EMI shielding effectiveness (EMI SE). The optimized EMI SE of xfMWNT/Co/C@TNF-EP composites reached 54.4 dB, which was 19.3% higher than that of pure Co/C@TNF-EP. Additionally, the flexural properties of the xfMWNT/Co/C@TNF-EP composites were also markedly enhanced, with a flexural strength of 164.40 MPa.
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Toxicology Research
·
2025
·Vol. 14
·期 5
·
IF 2.1
Wang Yanchen,Yu Leguang,Cui Yong,Guo Xiaoyan
Propofol is a widely used intravenous anesthetic for the induction and maintenance of general anesthesia. Although clinical observations have suggested potential nephrotoxic effects of propofol, experimental evidence remains limited. In this study, we investigated the renal effects of propofol in vitro using human renal proximal tubular epithelial (HK-2) cells. Our results demonstrate that propofol induces persistent oxidative stress and mitochondrial dysfunction, leading to apoptosis. Notably, propofol activates the JNK/c-JUN signaling pathway, which in turn promotes epithelial-to-mesenchymal transition (EMT), as evidenced by morphological changes and increased expression of mesenchymal markers such as vimentin and Snail. These findings suggest a mechanistic link between prolonged propofol exposure and renal fibrotic responses. Our work highlights the need for greater awareness of propofol-associated renal risks and provides a basis for future research into its underlying molecular mechanisms.
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ACS Nano
·
2026
·
IF 17.3
Xinhao Li,Weikang Hu,Yao Huang,Yanmei Ma,Zuokun Yin,Tong Wang,Chengzhi Hu
Unraveling the precise kinetics of the intrinsic apoptotic pathway requires resolution of the temporal lag between mitochondrial permeabilization and downstream proteolytic execution. However, dissecting these distinct molecular events within the crowded cytosolic environment of a single live cell remains limited by the lack of nonperturbative, multiplexed sensing tools. Here, we report a dual-channel nanoprobe capable of label-free, simultaneous monitoring of Cytochrome c (Cyt c) translocation and Caspase-3 activation. The nanoprobe features physically isolated nanochannels allowing for orthogonal functionalization: one channel acts as an aptamer-based sensor for Cyt c, while the second functions via the enzymatic cleavage of a specific peptide substrate by Caspase-3. This design enables the synchronous transduction of protein binding and enzymatic activity into independent current signals. The probe exhibited high sensitivity, selectivity, and stability in complex biological fluids. We applied this platform to monitor the dynamics of Cyt c and caspase-3 in breast cancer cells, revealing significant heterogeneity in apoptosis and a spatiotemporal delay between Cyt c release and caspase-3 activation, consistent with the intrinsic apoptosis pathway. This dual-detection methodology provides a minimally invasive approach with high spatial and temporal resolution for probing apoptotic signaling at the single-cell level and enables quantitative assessment of heterogeneous cellular responses to apoptotic stimuli.
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