Nature Communications
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2025
·Vol. 16
·期 1
·1-12
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IF 15.7
Guo Xingkui,Zhang Lijie,Zhuo Hao,Chen Chuyang,Yang Hang,Li Tian,Qi Haobo,Zhai Wei
Zwitterionic hydrogels have emerged as promising candidates for diverse applications, especially in epidermal electronics, due to their prominent hemocompatibility, superhydration, and nonfouling properties. However, their practical applications are often severely hindered by inadequate mechanical properties and limited functionalities. Here, we develop a mechanically robust zwitterionic hydrogel with an optimal combination of functions (RHOCF) by constructing a consolidated dynamic supramolecular framework and a spatially multiscale hierarchical structure. By finely introducing a reinforced entangled supramolecular network, along with hierarchical architectures across multiple length scales into the zwitterionic hydrogel system, we can engineer highly stiff and tough zwitterionic hydrogels that seamlessly integrate typically incompatible mechanical properties, including excellent stretchability, notable tensile strength, high fracture toughness, considerable stiffness, and great resilience. The RHOCF further integrates optical transparency, ionic conductivity, self-adhesion, and freezing tolerance, enabling conformal contact with dynamic, irregular surfaces for stable motion sensing and artifact-free electrophysiological signal acquisition.
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RSC Advances
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2025
·Vol. 15
·期 48
·40478-40490
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IF 4.6
Qisong Feng,Junjun Ma,Yankun Shen,Zheng Zhou,Shilian Wu,Juan Wang,Junpeng Li,Yu Yang
Flexible printed electronics represent a swift, efficient, and cost-effective technique for depositing metallic conductive materials onto flexible substrates, particularly with the pivotal advancement of functional conductive inks. Metal–organic decomposition conductive inks have garnered substantial interest owing to their straightforward synthesis, convenient storage, and low processing temperatures. However, during low-temperature heating, these inks frequently encounter issues such as fast pyrolysis and gas escape, leading to numerous defects in the microstructure of silver films. Moreover, low silver content results in a high volumetric shrinkage rate, negatively impacting electrical conductivity. To address these limitations, this study synthesized four distinct silver precursors and conducted an in-depth analysis of their chemical compositions, thermal behaviors, and microscopic morphologies. Conductive inks were developed with a high silver content using silver citrate as the silver source with gradient thermal volatilization and low-temperature reduction properties. The impact of solvents and complexing agents on the performance of ink formulations was then examined. Furthermore, the evolution of the inks' microstructure was investigated during thermal decomposition along with the influence of the microscopic morphology on electrical conductivity. Finally, the thermal decomposition mechanism was elucidated in detail. By introducing organic solvents with varying boiling points, the intensity of thermal decomposition was effectively reduced, thereby minimizing the appearance of surface defects such as bubble holes and sintering marks. This strategy significantly enhanced the density of the silver film, reduced its surface roughness, and improved its electrical conductivity.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
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IF 4.6
Ke Zhang,Zhihua Li,Xiaowei Huang,Yaning Qin,Junjun Zhang,Sulafa B.H. Hashim,Haoyang Xu,Ruoying Zhang,Jiyong Shi,Xiaobo Zou
This study developed a pore-tunable colorimetric aerogel based on carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA), and butterfly pea anthocyanin (BA) via sol-gel/freeze-drying, for real-time food freshness monitoring. The regulatory mechanisms of volume ratios on the aerogel's morphology, microstructure, physical properties, and release behavior were systematically investigated. The results demonstrated that CMC and PVA formed a stable 3D-H-bonded network, endowing the aerogel with outstanding water absorption capacity (2468.27 %), high hardness (7008.24 g), and excellent thermal stability. At a CMC/PVA ratio of 1:1, the uniform and dense pore structure modulated the BA diffusion pathways, achieving a continuous and controllable release behavior consistent with Fick diffusion kinetics. Furthermore, the BA-loaded aerogel exhibited high sensitivity to pH buffers and ammonia vapor (with a detection limit of 0.39 μM for ammonia), along with reversible color changes. During pork quality monitoring, the C1P1T (where 'C' and 'P' denote the mass of CMC and PVA, respectively, and 'T' indicates that the aerogel was loaded with BA extract) aerogel showed distinguishable color changes, clearly distinguishing between fresh, sub-fresh, and spoiled stages. This work provides a novel strategy for developing overly sensitive intelligent indicator systems for meat freshness monitoring.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Ning Luo,Fengyu Gao,Hengheng Liu,Lei Yi,Zirong Niu,Erhong Duan,Honghong Yi,Long Sun,Shunzheng Zhao,Yuansong Zhou,Shangfeng Du,Xiaolong Tang
The removal of NOₓ emissions from flue gas by NH 3 selective catalytic reduction (SCR) over catalysts has always been a challenge due to poisoning from the contained water and sulfur. This study demonstrates that rather than poisoning, the contained H 2 O and SO 2 can work positively through an in-situ sulfation process for CoMn 2 O 4 /CeTiOₓ (CMCT) catalysts, thus providing a synergistic effect for CO oxidation and NH 3 -SCR for improving the catalyst activity and selectivity. The obtained sulfated catalyst, achieves over 90 % conversion for NOₓ and about 100 % for CO with nearly 90 % N 2 selectivity at 225–350 °C. The mechanism studies are conducted and the enhanced effect for NH 3 -SCR is revealed from the formed Brønsted acid, surface sulfates, and the reactive oxygen species (O*) generated during CO oxidation. Furthermore, the function of CO adsorption is explored in separating reaction sites and suppressing excessive NH 3 oxidation for achieving high N 2 selectivity.
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CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Xinbin Ji,Yulong Xiang,Jing Guo,Fucheng Guan,Da Bao,Qiang Yang,Zheng Li,Yihang Zhang,Xin Zhang,Jiahao He
The integration of early warning and thermal protection functions in fire-prone environments remains a significant challenge in the development of intelligent protective textile materials. In this study, a structural regulation strategy is proposed, leveraging the synergistic templating and stress-orientation effects of carbon nanotubes (CNT) and Ag 2 Se nanorods to successfully construct a polyimide (PI)/pre-oxidized polyacrylonitrile (panof)/CNT/Ag 2 Se composite porous fiber (PPCAF) featuring a stable sheath–core architecture. The core, composed of a dense panof/CNT/Ag 2 Se (s) phase, offers thermal responsiveness and mechanical support. The shell comprises a porous PI matrix that buffers stress, insulates heat, and prevents Ag 2 Se degradation and shedding, thereby enhancing thermal conversion and signal stability. This rational architecture enables the fiber to rapidly respond to fire-induced thermal stimuli, achieving a maximum thermoelectric voltage of 4.5 mV within 1.8 s via the Seebeck effect, ensuring stable self-powered fire warning. Concurrently, the fiber exhibits excellent passive protection, including high tensile strength (18.93 MPa), flame retardancy (LOI: 55.6 %), low thermal conductivity (0.0298 W/m·K), and superhydrophobicity (contact angle: 160.2°). These integrated properties contribute to slowing flame spread, minimizing heat transfer, and blocking moisture intrusion. This study provides both theoretical insights and practical guidelines for designing advanced self-powered intelligent textile materials with dual fire protection functionalities.
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FOOD HYDROCOLLOIDS
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2025
·
IF 12.4
Jiahao Ren,Yiting Fan,Xinglong Xiao,Yifang Cao,Youning Zou,Xuying Luo,Fengsong Liu
Chlorogenic acid (CGA) is a bioactive phenolic compound with antioxidant and antimicrobial properties, but its poor solubility, stability, and bioavailability limit practical use in food preservation. In this study, a novel starch@CGA emulsion was developed using gelatinized starch as the core, a CGA-rich MCT oil phase, and Tween-80 as stabilizer. FTIR and microscopic confirmed successful encapsulation and uniform dispersion. Molecular docking simulations showed tight and stable binding of CGA to the starch matrix, contributing to prolonged retention. The emulsion showed strong antioxidant activity, with 0.10 mg/mL CGA achieving 85.28 % and 96.61 % scavenging of DPPH and ABTS radicals, respectively, and reduced Shewanella putrefaciens viability to 0.61 %. Transcriptomic analysis revealed that the emulsion disrupted bacterial energy metabolism, oxidative stress response, and key metabolic pathways. In cod fillet preservation, the emulsion extended shelf life from 6 to 8 days, inhibited spoilage, and reduced oxidation. This biocompatible, food-grade emulsion offers promising potential for active food packaging and preservation.
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FOOD HYDROCOLLOIDS
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2025
·
IF 12.4
Xijia Zhang,Hongbin Pu,Da-Wen Sun
The escalating environmental burden of petrochemical plastics necessitates biodegradable alternatives with balanced strength, flexibility, and water resistance. Here, sodium alginate (SA) and chitin nanocrystals (ChNCs), both derived from marine resources, were integrated to fabricate reinforced films. ChNCs were sustainably prepared via a microwave-assisted ferric chloride hexahydrate (FeCl 3 ·6H 2 O) hydrolysis route, with surface charge density tuned by controlled deacetylation to optimise hydrogen bonding and electrostatic interactions with SA. In parallel, dendritic colloidal SA was generated by ultra-high-shear homogenization in an environmentally benign manner, serving as flexible nodes in a “cement–mortar” architecture with rigid ChNCs to achieve synergistic reinforcement. Compared with neat SA films, the composite containing ∼36% deacetylated ChNCs exhibited increases of 196.03% in tensile strength, 150.80% in elongation at break, and 44.41% in Young’s modulus (308.46 MPa, 20.29%, 8845.21 MPa). Rheological and isothermal titration calorimetry analyzes confirmed the essential role of electrostatic balance and colloidal networks. The films maintained transparency and biodegradability while displaying enhanced thermal stability, water resistance, and barrier performance. This scalable strategy offers marine resource-based packaging films with tunable interfaces, addressing the long-standing strength–ductility trade-off in polysaccharides and holding promise for eco-plastics.
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PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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2025
·Vol. 122
·期 43
·e2508077122
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IF 9.1
Qizhu Qian,Qilong Liu,Mengxiang Wang,Jingjing Yang,Huiyi Li,Wei Bai,Wentao Wang,Changzheng Wu,Chong Xiao,Yi Xie
The emerging electrocatalytic C–N coupling reaction provides an attractive route toward green urea synthesis, but a lack of in-depth insight into the catalytic mechanism and the geometric/electronic configurations that determine the key C- and N-coupling intermediates formation hampers the exploration of efficient catalysts. Herein, we design a bimetallic oxide (Fe-Mo-O) with dual active sites of Fe and Mo for the adsorption and activation of NO2− and CO2, respectively. Constructing dual-metal catalyst leads to an upshift of the d-band center and the generation of an intermediate-spin Fe center, which not only favors the selective conversion of *CO2 into the key intermediate *CO on Mo sites, but also facilitates the adsorption and reduction of NO2− on Fe sites. Operando characterizations and theoretical calculations together elucidate that urea generation is associated with the formation of *CONH2 intermediate by coupling *CO and *NH2 on the alternating Mo and intermediate-spin Fe active sites, ultimately synergistically lowering the C–N coupling energy barrier. Specifically, the Fe-Mo-O catalyst delivers a high urea yield rate of 681.8 μg h−1 mg−1cat. and an excellent Faradaic efficiency of 60% at −0.5 V (vs. RHE). Furthermore, a C–N coupling paired with a glycerol oxidation system allows for energy-saving electrochemical coproduction of urea and formic acid. Our findings offer a feasible strategy to develop cutting-edge electrocatalysts for urea synthesis by active site design and electronic structure regulation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Rong Guo,Junran Xu,Pengcheng Xue,Guangfu Qian,Changzhou Chen,Douyong Min,Minsheng Lu
Inspired by the catechol chemistry of mussel adhesive proteins, we designed a multifunctional hydrogel that combines antibacterial activity, self-healing, excellent biocompatibility, enhanced mechanical properties, adjustable adhesion, and controlled drug release. A P(AA-co-UH) primary network was synthesized through the copolymerization of acrylic acid and urushiol, while a P(CNC-PB) secondary network was assembled from cellulose nanocrystals, polyvinyl alcohol, and borax. The two networks were interlaced to form an interpenetrating polymer network, which substantially enhanced mechanical performance, achieving a tensile strength of 61.45 kPa and excellent fatigue resistance. The cis -hydroxy groups in cellulose nanocrystal and polyvinyl alcohol, along with the hydroxyl groups of urushiol, engage in dynamic covalent borate ester bonds with borate ions in borax solution. This dynamic covalent crosslinking provides a way to control the concentration of catechol groups, thereby tuning the adhesive performance. Moreover, the incorporation of borax modifies the pore structure and swelling behavior of hydrogels, enabling controlled drug release. This hydrogel exhibits excellent self-healing properties, wet adhesion, and drug-loading capacity. It can self-heal within 5 h, with wet adhesion increasing from 14.13 kPa to 17.51 kPa and drug loading capacity rising from 10.9 mg/g to 19.6 mg/g. Antibacterial and cytotoxicity assays confirmed its favorable biocompatibility and antimicrobial efficacy. In summary, these multifunctional hydrogels are highly promising for smart medical dressing applications.
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Nature Communications
·
2026
·Vol. 17
·期 1
·2249
·
IF 18.1
Yang Leyi,Chen Miaoxi,Qi Jiongyang,Hu Wenya,Wang Shiyu,Wu Yujie,Song Dekui,Xing Dajun,Liu Nan
Non-invasive collection of weak electroneurographic signals is crucial for cognitive neuroscience. However, animal scalps are often covered by dense hair, which presents a substantial barrier in the scalp-electrode interface for accurate electrophysiological acquisition. Although scalp hair removal is common practice in clinical settings, it has detrimental effects on the test subjects and is infeasible in many non-clinical scenarios. Here we report a hair-adaptable and adhesion-tunable (HAAT) scalp-electrode interface that can accurately acquire electroneurographic signals from hairy skins of animal and human. By synthetically integrating dynamic covalent bonds and ionic conduction channels in the copolymer poly(sodium thioctate- co -sulfobetaine methacrylate), we implement the key functionalities of the HAAT interface including penetration of dense hair layers, strong conformal skin-electrode adhesion, on-demand painless detachment, and sensitive neuroelectric coupling. We achieve stable and precise electroneurographic signals acquisition from human, monkey and mouse’s scalps with various hair densities. The accurate event-related potential monitored during monkey vision-attention tasks facilitates the study of monkey brain activity. These results demonstrate the HAAT interface as an outstanding platform for conducting non-invasive research on animal cognition.
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BIOMATERIALS
·
2026
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IF 13.6
Lei Tong,Yaling Cheng,Yuxiang Wang,Na Li,Jie Liang,Yong Sun,Yujiang Fan,Xingdong Zhang
Achieving both robust mechanical and osteogenic properties of bone adhesives remains challenging. Here, we developed a novel polyurethane-based bone adhesive (PCLU- g -nHA) by covalently incorporating aminated nanohydroxyapatite (nHA-NH 2 ) into a biodegradable poly (ε-caprolactone) urethane (PCLU) network. This design promoted uniform nHA dispersion and strong organic–inorganic integration through urea linkages, significantly enhancing compressive modulus (4.91 ± 0.10 MPa) and adhesive strength (3.41 ± 0.24 MPa in lap-shear). The adhesive cured rapidly under mild conditions with minimal heat release. PCLU- g -nHA showed improved biocompatibility and stimulated bone marrow mesenchymal stem cells (BMSCs) osteogenic differentiation in vitro . Transcriptomics revealed upregulation of extracellular matrix remodeling and collagen synthesis pathways. In vivo , PCLU- g -nHA enhanced bone regeneration and osseointegration in rabbit femoral condyle defect and tibial fracture models, outperforming a commercial PMMA bone cement. This study offers a scalable strategy for developing highly bioactive and tough bone adhesives with clinical translational potential.
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Yinhua Hu,Xuanyu Ren,Xuyang An,XinXin He,Ping Guo,Tiezhu Liu,Jia Zhang
Early fault detection of lithium-ion batteries (LIB) is crucial for the safe operation of electrical measurement systems. Detecting the dimethyl carbonate (DMC) vapor in the LIB electrolyte can effectively improve the early warning time. However, the response speed of the existing semiconductor resistive gas sensors is significantly slower compared with the commonly used temperature and pressure sensors. To address the issue within gas sensors, a DMC gas sensor with an extremely fast response speed was developed based on mixed-phase bismuth oxide, which can effectively respond to 20 ppm DMC within 6 s. Moreover, the sensor successfully triggered the alarm approximately 15 min before the start of thermal runaway and within 22 s after the mechanical rupture of the battery in the simulated abuse test, demonstrating the application potential of gas sensor in the early fault warning of LIB.
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