Materials
·
2026
·Vol. 19
·期 15
·3313
·
IF 3.7
Pengzhai Li,Kangzhen Sun,Yi Wu,Qiuli Fang,Yin Zhang
HighlightsA low-cost silica aerogel route is developed using water as the sole solvent.Controlled gelation enables the formation of a uniform mesoporous network.Vapor-phase silylation converts the aerogel surface from hydrophilic to hydrophobic.The resulting aerogels show promising thermal insulation performance and potential for green scalable production.To address the dependence on organic solvents, costly silicon precursors, and complex processing in conventional silica aerogel preparation, this study developed a green and low-cost aqueous route using water glass as the silicon source. The sol–gel process was optimized through an orthogonal experimental design by regulating precursor concentration, pH, temperature, and catalyst dosage, enabling the formation of a stable three-dimensional silica network. Under the optimized conditions, the unmodified silica aerogel exhibited low density, high porosity, and a typical mesoporous structure, with a specific surface area of 707.87 m2/g, an average pore size of 5.75 nm, and a thermal conductivity of 0.0408 W/(m·K). After HMDS vapor-phase modification, hydrophobic methyl groups were introduced onto the aerogel surface, increasing the water contact angle to 132.3°. Among the modified samples, S3 showed the lowest thermal conductivity of 0.0360 W/(m·K), indicating good thermal insulation performance. This work provides a feasible strategy for preparing hydrophobic silica aerogels through a cost-effective aqueous process, showing potential for greener and large-scale production of silica aerogel materials.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 30
·40218-40231
·
IF 7.8
Xu Tianyu,Zhong Jun,Dai Chengbai,Du Yimin,Lyu Xinzhe,Ma Tian,Zhang Panpan,Zhu Xiaojia,Li Zheng,Quan Cheng,Hu Yuting
Osteoarthritis (OA) is a chronic degenerative disease causing bone and cartilage deterioration, joint deformity, and functional loss. The initiation and progression of OA are primarily driven by oxidative stress and the abnormal activation of the Wnt/β-catenin signaling pathway. This study involved loading Resveratrol (Res) and platinum (Pt) nanozymes, which exhibit superoxide dismutase (SOD) and catalase (CAT), onto a metal-organic framework (MOF) due to its distinctive porosity and high loading capacity. The system was further modified with hyaluronic acid (HA) to synthesize Pt-MOF/Res@HA (PMRH) nanoparticles. The PMRH nanoparticles improve early OA prevention and treatment by concurrently inhibiting the Wnt/β-catenin signaling pathway and eliminating reactive oxygen species (ROS). Experimental results, both in vitro and in vivo, indicate that PMRH nanoparticles efficiently scavenge ROS within the OA microenvironment. The PMRH nanoparticles inhibit the overactive Wnt/β-catenin signaling pathway in chondrocytes affected by osteoarthritis. This dual-target approach, which addresses oxidative stress and inhibits the Wnt/β-catenin signaling pathway, shows promising therapeutic potential for OA.
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PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2026
·
IF 6.4
Xiangkai Wang,Zhe Wang,Yuqi Zhang,Jianying Zhang,Jiaxing Chen,Qi Zhao,Zhangjing Chen,Ximing Wang
Aerogel shows excellent flame retardancy, heat release rate decreased by 31.6% and total heat release by 44.2%. • Aerogel has excellent fire detection capabilities and can trigger an alarm within 3.6 s of being exposed to flames. • Aerogel exhibits excellent hydrophobic properties, with a water contact angle of 145.8°. Biomass aerogels, with their unique three-dimensional porous structure and renewable nature, have attracted widespread attention in fields such as thermal insulation, flame retardancy, smart sensing, and wearable devices. However, they face bottlenecks such as flammability, low mechanical strength, and poor water resistance under certain conditions, which severely limit their practical applications. In this study, we fabricated a multifunctional sodium carboxymethyl cellulose/graphene oxide/ammonium polyphosphate (CMC/GO/APP) composite aerogel with an anisotropic porous structure through unidirectional freeze-casting combined with silane cross-linking. When exposed to a flame, the composite aerogel triggers an alarm within 3.6 s. The organosilane modification endows the cross-linked network formed in the composite aerogel with excellent mechanical properties and a hydrophobic surface, resulting in a water contact angle of 145.8°. Comparison with the original CMC aerogel shows that the composite aerogel exhibits a 31.6% reduction in heat release rate and a 44.2% reduction in total heat release, demonstrating excellent flame-retardant properties. This aerogel features a synergistic mechanism that integrates flame retardancy, hydrophobicity, and fire early warning capabilities, showcasing significant application potential across multiple fields. Download: Download high-res image (215KB) Download: Download full-size image
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DESALINATION
·
2026
·
IF 9.9
Yanzhou Tang,Guoqiang Zhong,Jun Zhang,Ruifeng Song,Hongbo Lv,Kaiwen Chen,Hongdan Wang,Rengui Weng,Xusheng Wang,Zhang Yan,Weiguang Li,Zhuwu Jiang,Chang He
Covalent organic frameworks (COFs) are attractive electrode candidates for capacitive deionization (CDI), but their practical use is often restricted by sluggish electron transport and the limited accessibility of redox-active units. In this work, electroactive β -ketoenamine COF domains were covalently integrated with amino-functionalized carbon nanotubes (CNTs), producing a conductive core–shell hybrid with intimate interfacial coupling. Benefiting from the thin COF shell, the conductive CNT backbone, and the chemically anchored interface, the optimized electrode achieves a salt adsorption capacity of 87.38 mg g −1 and maintains stable regeneration behavior, outperforming the pristine COF and CNT controls. Electrochemical measurements and density functional theory (DFT) calculations indicate that the covalent COF/CNT junction redistributes interfacial charge, improves electronic communication, and decreases the barrier for Na + migration. These results highlight covalent interfacial integration as an efficient route for activating redox COFs and developing high-performance metal-free CDI electrodes. Download: Download high-res image (372KB) Download: Download full-size image
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ANALYTICAL CHEMISTRY
·
2026
·Vol. 98
·期 28
·20936-20944
·
IF 7.3
Liu Ziyu,Xie Lingling,Yin Shuhang,Zhu Xiaohua,Liu Meiling,Zhang Youyu
Cellular signaling networks are orchestrated by complex
interactions
between gene expression and ion flux, yet tools for simultaneously
visualizing these events in living cells remain limited. Herein, we
report two orthogonal gold-nanoparticle-based DNA nanosensors that
enable simultaneous imaging of sodium/hydrogen exchanger 1 (NHE1)
mRNA and Na + dynamics in hepatocellular carcinoma cells.
The sensing mechanism relies on proximity-dependent fluorescence quenching.
For mRNA detection, Cy3-labeled reporter strands hybridize to DNA-functionalized
gold nanoparticles (AuNPs), holding the fluorophore close to the quenching
surface. Target binding triggers strand displacement, releasing Cy3,
and restoring emission. For Na + detection, a Cy5-labeled
substrate strand hybridizes with a Na + -specific DNAzyme
anchored on AuNPs. Na + activates the DNAzyme, cleaving
the substrate at a defined site and liberating the Cy5 fluorophore.
This dual-sensor system enables the quantitative monitoring of both
analytes in living cells. Using this platform, we directly visualize
that NHE1 mRNA downregulation suppresses intracellular Na + accumulation, establishing a regulatory link between gene expression
and ion homeostasis. Notably, mRNA-targeted hybridization inhibits
cancer-cell migration in a dose-dependent manner, revealing a potential
therapeutic mechanism. This approach provides a molecular tool for
decoding ion-based signaling networks in cancer biology.
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高影响因子
FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Ruling Tang,You Luo,Yasmina Sultanbawa,Yongguang Huang
ALRP3 is a rapidly fermentable pectin, while USRP2 is a slowly fermentable one. • Repeated dosing with either pectin was conducive to SCFA production. • ALRP3 preferentially enriched butyrate-producing bacteria. • USRP2 specifically promoted Bifidobacterium and Phocaeicola . This study investigated how gut microbiota responds to repeated interventions with two structurally distinct pectic polysaccharides (ALRP3 and USRP2) isolated from red raspberries and how structural variations influence fermentation outcomes. The low-molecular-weight and less branched ALRP3 was rapidly fermentable, while high-molecular-weight and more branched USRP2 was slowly fermentable. Both pectic polysaccharides modulated gut microbiota and promoted SCFA levels, and these effects were significantly influenced by polysaccharide structure, dosing cycles, and their interaction. During fed-batch fermentation, the substrates were initially added at 0 h and subsequently supplemented at 12, 24, and 36 h, resulting in four substrate additions in total. Following repeated supplementation, the fecal microbiota gradually formed new stable community structures, and SCFAs steadily accumulated, with both pectic polysaccharides reaching the peak total SCFA production after the third supplementation. They enriched similar beneficial bacteria but also induced distinct flora. ALRP3 specifically boosted butyrate-producing bacteria and butyrate production, while USRP2 enriched specific Bifidobacterium strains. These results support the targeted design of pectic polysaccharide-based microbiota regulation strategies. Download: Download high-res image (206KB) Download: Download full-size image
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Materials Today Nano
·
2026
·
IF 7.6
Yu Xiao,Yuheng Wang,Jingjing Zheng,Song Gao,Haojie Li,Yingyuan Zhao,Xiubo Xie,Chuanxin Hou,Wei Du
Fabricating electromagnetic coupling carbon-based aerogels with tightly bound and uniformly distributed components is a proven strategy for improving electromagnetic wave absorption (EWA) performance. Herein, highly ordered porous cobalt/cobalt (II) oxide/carbon (Co/CoO/C) aerogels were successfully fabricated via ice-templated freeze casting coupled with one-step carbonization, relying on the complexation reaction between cobalt ions and chitosan. The optimal sample, Co/CoO/C-1.0, achieves a minimum reflection loss (RL m ᵢ n ) of −58.15 dB and an effective absorption bandwidth (EAB) of 6.48 GHz at a thickness of 2.2 mm. Additionally, the aerogel exhibits excellent radar stealth performance (with a significant reduction in radar cross-section, RCS) and thermal insulation properties. Gradient structural design effectively extends the effective absorption bandwidth (EAB) to 11.23 GHz. Mechanism analysis reveals that the outstanding EWA performance of these aerogels stems from the synergistic effect of diverse attenuation pathways, including multiple scattering, dipole polarization, interfacial polarization, conduction loss and magnetic resonance. The regulation of cobalt content effectively achieves an optimal balance between impedance matching and electromagnetic loss. This multifunctional Co/CoO/C aerogel integrating EWA, radar stealth and thermal insulation capabilities possess great application prospects under complex service conditions and provide critical guidance for the rational design of carbon-based EWA absorbers. The highly ordered porous electromagnetic coupling Co/CoO/C aerogel was synthesized. The optimized aerogel achieves a minimum reflection loss (RL m ᵢ n ) of −58.15 dB and an effective absorption bandwidth (EAB) of 6.48 GHz at a thickness of 2.2 mm. The gradient multilayer structural design effectively broadens the effective absorption bandwidth (EAB) to 11.23 GHz. Download: Download high-res image (393KB) Download: Download full-size image
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.5
Shoukang Xiao,Ze Qin,Junying Chen,Liyu Chen,Kui Shen
A novel strategy is developed to heterogenize homogeneous cocatalysts. • Optimal nanoreactors are highly active and size-selective for CO 2 fixation. • The catalytic mechanism of CO 2 cycloaddition over OM@x-m-UiO-66/PBr is revealed. The cycloaddition of CO 2 with epoxides represents a promising strategy for mitigating CO 2 emissions. However, most heterogeneous catalytic systems still rely on homogeneous halogen-based cocatalysts to achieve desirable activities, which significantly complicates subsequent product purification and separation. Herein, we report a facile strategy to heterogenize homogeneous Br-based cocatalysts by encapsulating them into within stable UiO-66-based core–shell nanoreactors for efficient CO 2 fixation. Specifically, ordered mesoporous Ce-based UiO-66 (OM-UiO-66) was first synthesized via a soft-template method. The homogeneous Br-based cocatalyst was then adsorbed into the mesopores of OM-UiO-66, followed by epitaxial growth of a microporous Ce-based UiO-66 shell with controllable thickness to complete the encapsulation, thereby yielding a size-selective nanoreactor that possesses both 0.6 nm sieving channels and 10 nm reaction channels. Importantly, the synergistic interactions among the high concentration of the cocatalyst confined in the mesopores, the abundant Lewis acidic Ce sites on the pore walls, the mesoporous microenvironment that facilitates the enrichment of CO 2 and epoxide substrates, and the judiciously controlled thickness of the microporous shell collectively impart the as-prepared nanoreactor with high catalytic activity, excellent recyclability, and remarkable substrate size selectivity for the cycloaddition of CO 2 with epoxides under ambient conditions. This work not only develops a novel strategy for the efficient fixation of CO 2 via the heterogenization of homogeneous catalysts with a novel MOF-based core–shell architecture, but also provides a compelling paradigm for the heterogenization of other homogeneous catalysts. The heterogenization of homogeneous Br-based cocatalysts is realized by encapsulating them into a new kind of stable UiO-66-based core–shell nanoreactors for efficient and size-selective CO 2 cycloaddition with epoxides under ambient conditions. Download: Download high-res image (370KB) Download: Download full-size image
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Advanced Materials Technologies
·
2026
·
IF 6
Yanghuan Mao,Zhuoyun Liu,Chun Wang,Yuxin Peng,Aijia Ren,Cairong Liu,Muxi Ai,Tianhong Zhu,Pengfei Lian,Wu Bin Ying,Zhe Yu
Flexible hybrid electronics (FHEs) have widespread potential applications in wearable sensing, in particular for practical monitoring of human pulses. However, FHEs suffer from insufficient conformation with complex and dynamic skin surfaces. Resulting motion artifacts severely limit the long-term reliability of pulse monitoring under various exercise conditions. This underscores the importance of developing system-level mechanical stretchability. Herein, we propose a technical route to fabricate intrinsically stretchable hybrid electronics via liquid metals (LMs) patterning. Taking advantage of the selective wettability and microoxidation of LMs, a semicured polymer is used as a soft transfer medium to achieve high-fidelity LMs patterning at a device yield of 96.3%, with the resolution of 100 µm. Importantly, this method can be scaled up through compatibility with mature roll-to-roll flexible circuit printing technology. Our method enables the fabrication of stretchable FHEs, which can form a conformal interface with the skin and undergo adaptive deformation during motion (sitting, walking, and running), allowing real-time accurate acquisition of pulse signals by photoplethysmographic sensing. Our work provides a robust technical pathway for advancing FHE systems and boosts the development of wearable pulse monitors.
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Surfaces and Interfaces
·
2026
·
IF 6
Xiaolong Yao,Weihong Zhang,Zhengyang Feng,Meiqin Qu,Chun Wang,Longchun Zhong,Dengchao Liu,Wei Wang,Guotao Xiao,Qingwei Bu,Yingxue Sun,Gang Li,Xinyue Liang,Le Wang,Xiaoming Wei
COF-V rapidly adsorbs 2,4-DCP, CAP and DCF-Na within 30 min. • Maximum capacities of 665.54–773.65 mg∙g −1 were achieved. • Ternary mixtures exhibit a non-additive synergistic compensation effect. • Imine sites and hierarchical pores enable stable, reusable adsorption. Efficient capture of structurally diverse chlorinated organic compounds (COCs) from mixed aqueous matrices requires adsorbents that combine accessible porosity with chemically differentiated binding environments. Here, we report an imine-linked covalent organic framework, COF-V, that integrates a conjugated pore surface, imine-rich polar sites and hierarchical micro-/mesoporosity, with a Brunauer-Emmett-Teller surface area of 752.73 m 2 ∙g −1 and dominant pore sizes of 1.92 and 3.78 nm. COF-V rapidly adsorbed 2,4-dichlorophenol (2,4-DCP), chloramphenicol (CAP) and diclofenac sodium (DCF-Na), reaching equilibrium within 30 min and exhibiting Langmuir capacities of 680.84, 773.65 and 665.54 mg∙g −1 at 293 K, respectively. In binary mixtures, competition depended strongly on molecular size and functional-group complementarity. In the ternary system, however, the observed adsorption-retention ratios of 77.15 %, 94.66 % and 83.43 % exceeded those predicted from independent superposition of the corresponding binary inhibition effects, giving compensation coefficients of 1.021, 1.014 and 1.072. This non-additive synergistic compensation arises from complementary occupation of confined and wider pore domains and differentiated use of aromatic and polar binding sites, rather than from adsorption exceeding the corresponding single-solute capacities. X-ray photoelectron spectroscopy and density functional theory calculations reveal a cooperative mechanism involving pore confinement, π-π and n-π interactions, hydrophobic association, hydrogen and halogen bonding, and speciation-dependent electrostatics. COF-V preserved its characteristic framework structure after acid and alkali exposure and retained cycle stability factors above 0.85 after five regeneration cycles. These results identify pore-molecule complementarity and spatially differentiated interfacial interactions as design principles for mitigating competitive adsorption in multicomponent aqueous systems. Download: Download high-res image (230KB) Download: Download full-size image
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高影响因子
MEASUREMENT
·
2026
·
IF 6.1
Qi-Zhi Cai,Jia-Qi Wang,Ben Li,Na-Na Du,Hua-Long Du,He-Yun Zhang,Jia-Jun Diao,Qi Wang
A PbF 2 -assisted dielectric modulation strategy was proposed for enhancing SPR response in U-shaped fiber sensors. • The PbF 2 layer achieved a 1.97-fold enhancement in local electric-field intensity through interfacial dielectric modulation. • The experimentally fabricated coating showed excellent agreement with the optimized 70 nm design predicted by FEM simulations. • The proposed sensor achieved an average RI sensitivity of 8483.58 nm/RIU over 1.3381–1.3778. • A maximum sensitivity of 14195.32 nm/RIU and an experimental FOM of 40.42 RIU −1 were obtained. To improve the sensitivity of fiber-optic SPR sensors, a lead fluoride (PbF 2 ) sensitizing layer was introduced into a U-shaped fiber SPR configuration as a fluoride-based dielectric modulation layer. The proposed sensor was designed using a U-bent multimode fiber integrated with a PbF 2 -modified layer and was evaluated by FEM simulation and experimental testing. In the FEM simulation, the local electric field near the sensing interface became stronger after adding the PbF 2 -containing layer, with a peak intensity about 1.97 times higher than that of the pure-Au structure. The stronger electric field is mainly associated with the change in the effective dielectric environment and the redistribution of the evanescent field at the Au/analyte interface after introducing the PbF 2 -containing layer. The wide band gap and optical transparency of PbF 2 also make it suitable as a low-loss dielectric sensitizing layer. In the simulation, a PbF 2 thickness of 70 nm gave the best overall response. Experimentally, the sensor showed an average RI sensitivity of 8483.58 nm/RIU over the RI range of 1.3381–1.3778. For comparison, the pure-Au U-shaped sensor had a sensitivity of 4207.54 nm/RIU, corresponding to a 2.02-fold improvement after PbF 2 modification. In the high-RI range of 1.3669–1.3778, the sensitivity reached 14,195.32 nm/RIU, which was 3.37 times higher than that of the pure-Au sensor. The sensor also showed good stability under the tested conditions, with a thermal drift coefficient of 0.4867 nm/°C from 30 °C to 60 °C and an average sensitivity RSD of 0.6181% in repeated RI measurements. The PbF 2 -containing layer therefore improves the RI response of the U-shaped fiber SPR sensor through interfacial dielectric modulation.
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高影响因子
POLYMER
·
2026
·
IF 5.1
Shang Peng,Zhaonan Wang,Ding Huang,Kangjie Zhou,Yong Liu,Fan Cheng,Hai Liu
Cellulose nanofiber (CNF) aerogels are promising sustainable porous materials, but their mechanically weak sheet-like networks and intrinsic flammability limit practical deployment under demanding conditions. Herein, we report a minimal-polymer interfacial densification strategy that uses only approximately 2 wt% aramid nanofibers (ANFs) to reinforce and fire-protect CNF aerogels. Through an in situ sol–gel–coating process, the ANF sol is converted into a compact interfacial coating on CNF sheets, yielding a hierarchical ANF–CNF–ANF sandwich skeleton that stabilizes weak inter-sheet junctions while preserving the ultralight porous structure. This optimized skeleton endows the aerogel with a compressive strength of 219 kPa and a modulus of 618 kPa, corresponding to 2.6- and 15-fold improvements over pristine CNF aerogel, respectively, while maintaining a low thermal conductivity of 37.1 mW m −1 K −1 . The ANF-modified aerogel also exhibits self-extinguishing behavior, an increased limiting oxygen index, and reduced heat and smoke release, demonstrating improved fire resistance. This study provides a facile minimal-polymer interfacial engineering route for developing mechanically robust, fire-safe, and thermally insulating bio-based aerogels.
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