COMPOSITES PART B-ENGINEERING
·
2026
·
IF 14
Aiyue Sun,Ying Zhang,Zhenhua Gu,Guoliang Li,Yi Zhang,Ze Zong,Yali Liu,Xin Li,Muhammad Shahzad,Ming Li
To address the low thermal conductivity, severe supercooling, and poor long-term cycling stability of water-based phase change materials (PCMs), functional additives are commonly introduced. However, latent heat loss is inevitably induced by the disruption of the hydrogen-bonding network of water molecules. Herein, we propose an interface electronic-structure engineering strategy to regulate phase transition behavior by constructing electronically active heterointerfaces with a stable built-in electric field. The TiN/C heterostructure derived from MXene/cellulose aerogels is designed, in which TiN nanocrystals are in situ anchored within a porous carbon framework, forming robust TiN–C covalent interfaces. The resulting built-in electric field enhances water molecule polarization and interfacial chemical adsorption, stabilizes the hydrogen-bond network during repeated phase transitions, and promotes molecular and ionic migration. The optimized TiN/C-3 PCM exhibits a latent heat of 268.83 J g -1 with an ultralow additive loading of 7.1wt%, corresponding to a latent heat retention of 97.92%, and maintains 97.7% of its initial performance after 100 cycles. Cold-chain simulations further demonstrate stable temperature control at 0–4 °C for over 7 h, highlighting its potential for sustainable cold-chain applications. This work provides an effective strategy for designing high-performance PCMs, demonstrating the enormous potential of sustainable cold chain logistics.
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Journal of Magnesium and Alloys
·
2026
·
IF 15.8
Yulin Huang,Fenghua Wei,Yang Zhang,Xinan Zhang,Yiming Wang,Chen Huang,Yuke Li,Jingcai Chang
Interactions between metals and heteroatom-coordinated sites on the carbon matrix are crucial for enhancing the kinetics and thermodynamics of Mg/MgH 2 . Herein, we reported a sustainable K 2 FeO 4 activation strategy that converts high-sulfur petroleum coke into a sulfur self-doped porous carbon hosting FeNi–S coordinated active sites. Tailoring the alloyed electronic structure and exposing more catalytically active sites substantially enhanced the hydrogenation and dehydrogenation kinetics of Mg/MgH 2 with (FeNi)S@PPC. Its peak dehydrogenation temperature was 95.39 °C lower than that of ball-milled MgH 2 . In addition, it enabled MgH 2 to release 4.89 wt.% H 2 within 20 min at 275 °C, exceeding its sulfur-free counterpart (FeNi)@PPC by 1.41 wt.%. Moreover, the (FeNi)S@PPC/MgH 2 showed 99.5% capacity retention after 30 cycles, indicating excellent reversibility. Mechanistic investigations revealed that intrinsic sulfur self-doping induced a stable FeNi–S coordination environment, which lowered the D-band center of FeNi to −1.349 eV. The electronic redistribution was found to weaken the FeNi–(H) intermediate, lowering the dissociation and diffusion energy barrier by 0.39 eV and facilitating hydrogenation. This also reduced the energy required for Mg–H dissociation into H 2 by 0.65 eV. Consequently, the dehydrogenation activation energy was decreased to 97.09 kJ·mol − 1 , with the rate-limiting step shifting to a low-energy barrier three-dimensional interfacial reaction (R3 model). Overall, this study establishes a green valorization route for high-sulfur petroleum coke and elucidates a fundamental metal–sulfur charge transfer mechanism that substantially enhances magnesium-based hydrogen storage.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·Vol. 60
·期 31
·21740-21752
·
IF 12.2
Zhang Wei,Yu Qingmiao,Xue Hongpu,Bao Yi,He Yujie,Geng Jinju
Conjugated estrogens like 17β-estradiol-3-sulfate
(E2–3S)
are ubiquitous in wastewater and pose latent ecological risks due
to their potential conversion into endocrine disruptors. To address
the limited removal efficiency of biological treatment and the energy
dependence of advanced oxidation processes, we developed a novel biomaterial-coupled
system ( P .CE2S–Fe–Zn@NC) to mitigate
the estrogenic risks of E2–3S by integrating microbial metabolism
with advanced oxidation via interfacial electron transfer. The system
achieved a 92.4% reduction in estrogenic activity, significantly outperforming
standalone biological (80.2%) and catalytic treatments (38.6%). Mechanistic
investigations revealed that the Fe–Zn@NC catalyst established
a surface microelectric field that facilitated interfacial electron
transfer from bacteria to the catalyst. This electron flux drove a
self-sustained Fenton-like reaction, effectively activating bacteria-secreted
H 2 O 2 into • OH for oxidative
transformation. Concurrently, gene transcriptional changes occurred
in the functional bacteria within the coupled system, where the upregulation
of respiratory energy metabolism and extracellular electron-transfer
genes sustained energy-intensive catabolic processes, specifically
desulfation and steroid ring cleavage of E2–3S, as evidenced
by upregulated steroid catabolic genes. By synergistically coupling
material-driven oxidation with microbe-mediated metabolism, this system
reduced the estrogenic activity of the effluent. This study provides
a transformative paradigm for bridging microbial bioenergetics with
material catalysis, offering a sustainable strategy for remediating
latent estrogenic contaminants.
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ANALYTICAL BIOCHEMISTRY
·
2026
·
IF 3.1
Liang Guo,Liying Zhao,Shijin Zhou,Yanju Liu,Jinming Kong,Huaixia Yang
NGR-HP-AgPt and DNA tetrahedrons build a 3D track, avoiding probe entanglement. • Exo III-driven DNA walker achieves dual-signal ratiometric sensing of AFB 1 . • The built-in self-calibration effectively eliminates false-positive artifacts. • Ultrasensitive assay (LOD 73.99 fg/mL) successfully applied in complex matrices. Given the hepatotoxicity and widespread contamination of Aflatoxin B 1 (AFB 1 ), developing ultra-sensitive, anti-interference analytical platforms is paramount for public health. Herein, a dual signal ratio electrochemical sensing platform for accurate AFB 1 analysis was constructed integrating DNA tetrahedrons (TNDA), a dynamic DNA walker, and nitrogen-doped graphene oxide-supported hollow silver-platinum bimetallic nanospheres (NGR-HP-AgPt). The NGR-HP-AgPt cavity provides a uniform microenvironment, synergistically promoting catalytic effects to significantly accelerate interfacial electron transfer. Simultaneously, rigid 3D TNDA prevent spatial probe entanglement, providing a well-oriented track. To avoid false-positive artifacts in complex matrices, a competitive binding strategy is employed. Upon target recognition, AFB 1 displaces a complementary sequence (DNA1) from the aptamer. The released DNA1 acts as a walking strand, hybridizing with signal probes (Cd 2+ -DNA2). Subsequently, Exonuclease III initiates the DNA walker, continuously cleaving probes to amplify the ratiometric signal variation for reliable self-calibration. Under optimal conditions, this sensor exhibits a broad linear range from 2 × 10 −4 to 20 ng/mL, with an ultra-low detection limit of 73.99 fg/mL. Furthermore, its practical utility and high accuracy were successfully validated in complex food and medicinal matrices, yielding consistent results with the standard HPLC-FL method. This work broadens the robust design paradigm of anti-interference biosensing. Download: Download high-res image (296KB) Download: Download full-size image
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Journal of Water Process Engineering
·
2026
·
IF 6.6
Guangyu Duan,Xiaoya Li,Shuai Wang,Ru Zheng
The PNVP-GO composite was fabricated for efficient heavy metal removal. • The composite exhibited a high adsorption capacity of 86.96 mg·g −1 for Pb 2+ . • Topological analyses unveiled a synergistic dual-site specific adsorption mechanism. • Flexible PNVP chains overcome Pb 2+ lone pair hindrance via V-shaped cavity formation. A poly( N -vinylpyrrolidone)-graphene oxide (PNVP-GO) composite synthesized via optimized suspension polymerization demonstrated exceptional performance in removing Cu 2+ , Ni 2+ , and Pb 2+ . Adsorption of Cu 2+ and Ni 2+ followed the Langmuir isotherm, Pb 2+ recognition exhibited pronounced surface energetic heterogeneity accurately described by the three-parameter Sips and Toth models. Mechanistically, all uptake processes were rate-governed by spontaneous, endothermic chemisorption, consistent with the pseudo-second-order (PSO) kinetics, achieving maximum capacities of 73.96, 77.76, and 86.96 mg·g −1 for Cu 2+ , Ni 2+ , and Pb 2+ , respectively. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) confirmed chemisorption, while density functional theory (DFT) coupled with wavefunction topological analyses (ELF and IGMH) unveiled distinct dual-site specific adsorption mechanisms. Rigid GO carboxyl domains efficiently coordinate Cu 2+ and Ni 2+ but experience steric repulsion against the stereochemically active 6s 2 lone pair of Pb 2+ . Crucially, flexible PNVP chains overcome this barrier via conformational torsion (forming a V-shaped cavity) to accommodate the massive lone pair. A life cycle assessment (LCA) evaluated environmental sustainability and identified grid electricity for vacuum freeze-drying as the primary driver of Global Warming Potential (GWP, 75%). In comparison, ethanol washing was identified as the major contributor to Marine Eutrophication Potential (MEP, 29%). This study provides a universal theoretical paradigm for designing heavy metal adsorbents and highlights eco-design pathways to mitigate their life-cycle environmental footprints. Download: Download high-res image (288KB) Download: Download full-size image
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JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Xingchen Pan,WenKai Li,Chen Wang,Zhiyong Xie
Owing to the high theoretical energy density, lithium–sulfur batteries (LSBs) have been regarded as a highly competitive technology for next-generation energy storage systems. However, the commercial deployment of LSBs is affected by the diffusional loss of lithium polysulfides (LiPSs) and the inherently slow electrochemical conversion rates. Dual atom catalysts (DACs) have emerged as one of the most promising catalytic materials for LSB by expediting the kinetic conversion of LiPSs and facilitate the formation/decomposition of Li 2 S during the battery cycling process, thereby reducing the migration of LiPSs. In this study, we developed Fe-Ni DACs supported on nitrogen-doped few-layer graphene (FeNi-N-G) as a host for sulfur cathode. Both theoretical calculations and experimental results demonstrate that this few-layer graphene structure provides high conductivity and a porous framework, which significantly improves electron and lithium-ion transport. The dual-functional Fe-Ni–N site serve as strong anchoring centers for polysulfides while simultaneously providing active sites to improve the Li–S redox kinetics. Consequently, the cathode achieves a high initial capacity of 1164.6 mAh g −1 and maintains a capacity retention of 83.1% after 100 cycles at 0.2 C. Such performance underscores its exceptional cycling durability, particularly under high sulfur loading conditions.
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DESALINATION
·
2026
·
IF 9.9
Jianyun Liu,Junsheng Wu,Yue Zhu,Boshuang Zhang,Jianmao Yang
GO is electrostatically assembled on Fe-pillared bentonite at mild conditions. • The optimized GO/PB electrode delivers a desalination capacity of 41.11 mg g −1 in 10 mM NaCl. • A balanced GO loading improves conductivity without blocking ion-accessible pores. • The electrode retains 91.12% capacity after 100 CDI cycles. • Real groundwater desalination achieves >85% removal for major ions. Bentonite is an abundant layered clay mineral with intrinsic negative charge and ion-exchange capability, but its direct use as a capacitive deionization (CDI) electrode is restricted by poor electrical conductivity. In this work, graphene oxide-encapsulated Fe-pillared bentonite (GO/PB) composites were prepared through a mild electrostatic self-assembly strategy. Fe pillaring enlarged the interlayer space and exposed ion-accessible surfaces, while cationic surfactant-assisted assembly enabled negatively charged GO sheets to uniformly anchor onto the pillared bentonite surface. The resulting composite integrated the structural stability and cation-affinity of pillared bentonite with a uniformly assembled GO-PB interface, providing more efficient charge transfer and desalination than the physically mixed counterpart. The optimized GO/PB-0.2 with 14.6% GO delivered a salt adsorption capacity of 41.11 mg g −1 in 10 mmol L −1 NaCl and achieved 59.77 mg g −1 in 50 mmol L −1 NaCl. The capacity still maintained 91.12% after 100 continuous cycles, with no obvious change in the crystalline structure. Desalination tests using actual groundwater further showed simultaneous removal of multiple ions with removal efficiencies above 85%. This work demonstrates that charge-directed interfacial assembly provides an effective strategy for improving the electrical accessibility and utilization of pillared-clay ion-storage domains, offering a mild route for developing low-cost and stable CDI electrodes for brackish-water treatment. Download: Download high-res image (146KB) Download: Download full-size image
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AICHE JOURNAL
·
2026
·
IF 4.4
Ma Xinyu,Yang Fengrui,Song Chenyang,Wei Jun,Jia Shuwei,Wang Zhi
Achieving high permselectivity and strong tolerance is crucial for Mg 2+ /Li + separation membranes in salt lake lithium extraction. This study proposes an innovative strategy to covalently graft nitrogen-functionalized graphene oxide (NGO) onto the polyamide membrane surface. NGO was prepared by modifying GO with PEI. The polyamide membrane was synthesized via interfacial polymerization of PEI and TMC. PEI modification increases GO interlayer spacing to suppress aggregation, while GO rigidity facilitates PEI chain extension to enhance the positive charge density, whereas residual carboxyl groups from NGO provide specific ion transport channels. Simultaneously, covalent reaction ensures NGO uniform and stable grafting and prevents acyl chloride hydrolysis, constructing a robust outer barrier layer. This strategy enhances membrane stability, acid-resistance, and antibacterial properties. Consequently, the membrane flux reaches 62.7 L·m −2 ·h −1 , and the Mg 2+ /Li + separation factor is 43.12. A two-stage separation factor reaches 170.21. This membrane technology holds significant application potential in lithium extraction from salt lakes.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 8
·542
·
IF 5.4
Chen Chong,Liu Yufei,Zhang Kai,Fan Qiao,Luo Tingting,Peng Shigui,Wei Lanlan,Yin Yucheng,He Min,Yu Jie
Wearable sweat sensors offer a promising technical approach for real-time personal health management due to their non-invasive, in situ, and continuous monitoring capabilities. This study presents a novel wearable non-enzymatic electrochemical sensor based on a PEDTM/rGO/AuNPs composite for continuous and non-invasive monitoring of sweat glucose. Leveraging the synergistic effects of hydroxymethyl-functionalized poly(3,4-ethylenedioxythiophene) (PEDTM), reduced graphene oxide (rGO), and gold nanoparticles (AuNPs), the sensor significantly improves the electrocatalytic oxidation efficiency of glucose. At a low working potential of 0.2 V, the sensor demonstrates high sensitivity (362 µA·mM − 1 ·cm − 2 ) and a low detection limit (6.2 µM). Density functional theory (DFT) calculations reveal the synergistic catalytic mechanism of the composite at the oxidation pathway level. To achieve stable and efficient sweat collection and real‑time analysis, the sensor is integrated with a microfluidic chip based on SDS/NaOH/PI nanofibers and a portable point-of-care testing (POCT) system, enabling on‑site visual monitoring of sweat glucose. Real‑time monitoring results indicate a strong correlation between the sweat glucose levels measured by the sensor and blood glucose concentrations. This work provides an effective material and device design strategy for constructing high‑performance, integrated non‑invasive glucose monitoring systems, offering significant theoretical value and application potential in the field of wearable health monitoring. Graphical abstract
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JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2026
·
IF 2.6
Xu Guojuan,Zhang Weigang,Zhang Jialun,Xin Zhifeng
Ultra-low near-infrared reflectance coatings with a reflectivity of less than 10% at 1.06 µm are a research hotspot in the field of laser stealth. In this paper, various types of ultra-low near-infrared reflectance coatings were prepared using polyurethane (PU) as the binder and carbon nanotubes, carbon black, and graphite as the functional fillers. The effects of the types of carbon-based materials, the addition amount of fillers, and the particle size of graphite on the micro-structure, near-infrared reflectivity, and mechanical properties of the PU/carbon-based material composite coatings were systematically investigated. The results indicate that as the addition amount of carbon nanotubes increases, the reflectivity of the PU/carbon nanotubes composite coating towards 1.06 µm near-infrared light generally shows a gradual upward trend. When the addition amount of carbon nanotubes reaches 4 wt.%, the reflectivity of the coating towards 1.06 µm near-infrared light can be as low as 2.909%. As the addition amount of carbon black increases, the reflectivity of the PU/carbon black composite coating towards 1.06 µm near-infrared light generally shows a gradual downward trend. When the addition amount of carbon black reaches 10 wt.%, the reflectivity of the coating towards 1.06 µm near-infrared light can be as low as 2.319%. When the graphite addition amount is 8 wt.%, the reflectivity of the coating towards 1.06 µm near-infrared light can be as low as 2.601%. Under the optimal conditions of carbon-based material addition amount, the coating can achieve an ultra-low near-infrared reflectivity of less than 3% for 1.06 µm near-infrared light, demonstrating outstanding laser stealth performance. When the graphite particle size is 4000 mesh, the reflectivity of the PU/graphite composite coating to 1.06 µm near-infrared light can reach its lowest level (2.601%), while the coating maintains outstanding mechanical properties.
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NATURE
·
2026
·Vol. 656
·期 8126
·86-91
·
IF 56.1
Fang Qian,Wang Liming,Chang Kai,Yang Hongxin,Yan Pu,Cao Kecheng,Li Mian,Xue Jianming,Ouyang Xiaoping,Chai Zhifang,Huang Qing
Two-dimensional (2D) magnetic semiconductors are crucial for next-generation information storage and spintronic technologies 1 , 2 . MXenes, owing to compositional diversity and tunable properties, provide a platform for designing functional materials 3 , 4 , 5 . Incorporating lanthanides (Ln) introduces localized 4 f electrons with strong spin polarization, while potentially enabling semiconducting behaviour, offering a viable route to magnetic semiconductors 6 , 7 . However, the scarcity of MAX precursors and the susceptibility of Ln to dissolution in common etchants (for example, HF), compared with other M elements such as Mo, hinder the synthesis of lanthanide MXenes (Ln 2 CT 2 ) by conventional ‘top-down’ etching 8 . Here we propose a general ‘bottom-up’ methodology for synthesizing Ln 2 CT 2 (Ln = Gd, Tb, Dy, Ho, Er, Lu; T = Cl, Br) using layered halides as van der Waals building blocks. Multilayer Ln 2 CT 2 exhibits composition-tunable properties, characterized by optical absorption onsets spanning 1.26–1.71 eV, room-temperature resistivity of 0.329–36.1 Ω cm with a negative temperature coefficient, and low-temperature ferromagnetic hysteresis at 2 K accompanied by positive Curie–Weiss temperatures between 6 K and 59 K. Theoretical calculations show that the d -electron states around the Fermi level ( E f ) are largely diminished in bare Ln 2 C, whereas surface terminals further exhaust these states to open band gaps. Meanwhile, the highly localized 4 f electrons in Ln 2 CT 2 , located far from the E f , contribute to the spin splitting for the observed ferromagnetic behaviour. This combination of semiconducting and magnetic properties makes Ln 2 CT 2 a valuable candidate for spintronic device applications.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Wenqin Xu,Jinhui Chen,Caihong Zhuang,Qinhui Chen
A high loading conductive filler is typically required to reach the percolation threshold for composites; however, it leads to a decline in the material's physical and mechanical properties. Here, the conductive hydrogel (PAC-Ag-H-G) with a high-quality 3D interconnected network contained silver nanoparticles (Ag NPs), hydroxylated carbon nanotubes (HCNT), and graphene (G) in the matrix of polyacrylic acid/chitosan (PAC) was fabricated. PAC-Ag-H-G showed stretchable properties, good toughness, and breaking strength fatigue resistance. Most importantly, thanks to the 3D interconnected network formed by the vertex-edge-face structure of Ag NPs-HCNT-G, the electrical conductivity of the hydrogel is significantly enhanced with the minimal addition of only 0.2% (relative to AA) of HCNT and GO, respectively. The conductivity of PAC-Ag-H-G1 is 4.27 times that of PAC. It had steady biological or non-biological adhesion and could sensitively detect human joint movements. Additionally, this hydrogel exhibited excellent antibacterial effects against Gram-positive bacteria ( S.aureus ) and Gram-negative bacteria ( E.coli ). PAC-Ag-H-G conductive hydrogel is expected to adhere directly to the human body or the humanoid robot joint bearings for flexible motion monitoring.
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危险品化学品经营许可证（带存储）