ACS Nano
·
2026
·Vol. 20
·期 30
·21281-21293
·
IF 17.3
Zeng Wei,Li Yunxiao,Gan Yuefeng,Luo Xianfeng,Xing Yun,Zhu Zhongpeng,Tian Ye,Jiang Lei
Overheating is a major cause of device failure. Thin-film
evaporative
cooling leverages the latent heat of liquid phase change, but its
performance is often governed by the balance between interfacial liquid
supply and interfacial mass-transfer kinetics. The canine tongue maintains
a continuously wetted surface through rapid saliva replenishment and
evaporation during thermoregulation. Here, previously unreported nanocilia
on the tongue surface of the Beagle ( Canis lupus familiaris)
are identified. These nanocilia coat microscale papillae, revealing
a naturally evolved micro–nano hierarchical architecture. Inspired
by this architecture, a bioinspired cross-scale continuous surface
(BioCCS) integrating microgrooves and nanowires is developed. Microgrooves
promote stable liquid spreading, while nanoscale confinement modulates
interfacial water interactions and weakens interfacial hydrogen bonding,
together establishing a cross-scale coupled evaporation mechanism
(CCEM) bridging micro–nano–molecular scales. Tested
at 80 ° C, a temperature relevant to device reliability, BioCCS
achieves an evaporation rate of 31.36 kg h –1 m –2 , enabling a self-sustained passive cooling system
with a 150% enhancement in heat dissipation compared with an unmodified
surface. These results provide a concept for autonomously sustained
phase change cooling under subboiling conditions.
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ChemCatChem
·
2026
·Vol. 18
·期 15
·e70986
·
IF 4.1
Aili Xing,Xinpei Li,Xian Yang,Yuxiang Guo,Baojuan Xi,Shenglin Xiong,Changhua An
Developing bifunctional photocatalysts capable of efficiently utilizing photogenerated charge carriers for simultaneous H 2 production and value-added chemicals is highly desirable yet remains challenging. In this study, a class of bifunctional photocatalyst (TiO 2 @Ni–Pt) has been prepared via a facile photodeposition strategy for photocatalytic H 2 evolution coupled with benzyl alcohol (BA) oxidation. Compared with pristine TiO 2 , the as-obtained TiO 2 @Ni–Pt exhibits markedly improved photocatalytic activity, delivering H 2 evolution rate of 5.76 mmol·g −1 ·h −1 , BA conversion of 36.9%, and benzaldehyde selectivity of 87.2%. After 12 h of reaction in three consecutive cycles, no noticeable performance degradation is observed, indicating good stability of the catalyst. Mechanistic investigations reveal that the incorporation of Ni–Pt bimetallic sites not only enhance the light–harvesting capability, but also promotes charge separation by acting as electron–accepting centers. Moreover, the uniform dispersion of Ni and Pt on TiO 2 provides abundant active sites for H 2 evolution and BA oxidation. ESR results suggest that a free–radical pathway is involved in the alcohol oxidation reaction. This work provides a rational strategy for synergistically achieving clean energy and value–added chemicals. Graphical In this study, a class of bifunctional photocatalyst of TiO 2 @Ni–Pt was successfully prepared via a facile photodeposition strategy. The optimized TiO 2 @Ni–Pt exhibits excellent performance for photocatalytic H 2 evolution coupled with benzyl alcohol (BA) oxidation, delivering H 2 evolution rate of 5.76 mmol·g −1 ·h −1 , BA conversion of 36.9%, and benzaldehyde selectivity of 87.2%.
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RARE METALS
·
2026
·Vol. 45
·期 8
·e70481
·
IF 12.1
Long Jiang,Zhuang Wu,Qi Fan,Shengchao Wang,Wenjie Zhang,Lijing Yu,Dirong Gong,Yunlei Zhou,Kun Liang
en This link goes to a English section zh This link goes to a Chinese section Lithium–sulfur batteries have attracted extensive interest owing to their exceptionally high theoretical energy density and environmental benignity. However, their practical performance remains severely constrained by intrinsic challenges, including the polysulfide shuttle effect and large volume expansion during cycling, which markedly compromise energy efficiency and fall far short of the requirements for commercialization. To address these challenges, we modify a commercial separator (PP) with a dual-transition-metal Mo 2 Nb 2 C 3 MXene, whose surface terminations are precisely regulated via distinct etching strategies, thereby substantially enhancing the electrochemical performance of lithium–sulfur batteries. Compared with cells employing the pristine commercial separator, all PP@Mo 2 Nb 2 C 3 -based cells deliver superior rate performance at a high current density of 3C. Notably, the PP@Mo 2 Nb 2 C 3 -Cl cell retains a high discharge capacity of 589 mAh g −1 after 200 cycles, nearly doubling that of the cell with the commercial PP separator (307 mAh g −1 ). At all tested C-rates, the PP@Mo 2 Nb 2 C 3 -based cells delivered higher discharge capacities than those employing the commercial PP separator. Overall, modification of Celgard 2500 with the dual-transition-metal Mo 2 Nb 2 C 3 MXene effectively suppresses the polysulfide shuttle, enhances sulfur utilization, and substantially prolongs the cycle life of lithium–sulfur batteries. This work provides valuable insights into the rational design and application of MXenes as functional modifiers for advanced lithium–sulfur batteries. 摘要 en This link goes to a English section zh This link goes to a Chinese section 锂硫电池因其高理论能量密度和对环境友好受到广泛关注,但其在工作中产生多硫化物引起的穿梭效应、体积膨胀等问题严重影响电池的效率,远不足以达到商业化的要求。针对这些问题,本文研究了双过渡金属Mo 2 Nb 2 C 3 MXene对商用Celgard 2500进行改性,通过不同的刻蚀方法调控Mo 2 Nb 2 C 3 MXene端基,进而有效提升了锂硫电池的性能。与商用Celgard 2500隔膜相比,所有基于PP@Mo 2 Nb 2 C 3 的电池在3C倍率下均表现出更优异的倍率性能。值得注意的是,PP@Mo 2 Nb 2 C 3 -Cl电池在200次循环后仍保持589 mAh g −1 的高放电比容量,几乎是使用商用Celgard 2500隔膜电池(307 mAh g −1 )的两倍。在不同倍率下,PP@Mo 2 Nb 2 C 3 电池均表现出比使用商用Celgard 2500隔膜电池更高的放电比容量。总体而言,采用双过渡金属Mo 2 Nb 2 C 3 MXene对Celgard 2500隔膜进行改性,能够有效抑制多硫化物穿梭,提高硫利用率,并延长锂硫电池的循环寿命。这项工作为合理设计和应用MXene作为先进锂硫电池的功能改性材料提供了有价值的见解。
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Advanced Healthcare Materials
·
2026
·
IF 11
Yanlin Li,Xiaotian Jiang,Jiale Li,Hanwen Gu,Qi Li,Jiaxin Li,Yunqing Ji,Xiang Min,Bin Chen,Qingjia Xu,Junhao Lin
Osteoarthritis (OA), a prevalent degenerative joint disorder characterized by articular cartilage deterioration, represents a major global health challenge. Recent studies highlight the pivotal role of reactive oxygen species (ROS)-mediated ferroptosis in OA pathogenesis. Here, we report a microenvironment-adaptive hydrogel system based on 2D vanadium nitride (V 2 N) MXene nanoenzyme (hereafter denoted as V 2 N MXenzyme@Gel). This system features a dual-crosslinked network that optimally balances between mechanical robustness and flexibility. Crucially, the V 2 N MXenzyme establishes a self-sustaining “capture-conversion-recycling” catalytic cycle, mimicking both superoxide dismutase (SOD) and catalase (CAT) activities. The cycle not only neutralizes detrimental ROS into water (H 2 O) and oxygen (O 2 ) but also generates nitric oxide (NO), collectively alleviating oxidative damage. Mechanistically, V 2 N MXenzyme@Gel effectively scavenges ROS, attenuates oxidative stress, and suppresses ferroptosis by regulating the Hspa5/GPX4 axis, while concurrently restoring the metabolic homeostasis of chondrocyte extracellular matrix (ECM). Meanwhile, intra-articular administration of V 2 N MXenzyme@Gel significantly attenuates cartilage degradation and inflammation levels in OA rats. Collectively, our work presents a V 2 N MXenzyme@Gel with dual capabilities for ROS elimination and ferroptosis blockade, demonstrating its efficacy in arresting OA progression and proposing a novel precision strategy for managing chronic joint diseases.
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ENVIRONMENTAL TECHNOLOGY
·
2026
·
IF 2
Hailin Cao,Haitao Liu,Wenchao Ma
Municipal solid waste incineration (MSWI) fly ash is a hazardous waste, and traditional landfill disposal lacks sustainability. Resource utilization offers a viable pathway for its future management. Heavy metals are key hazardous components in fly ash, and their stabilization is essential for resource utilization. However, traditional high-temperature treatments are energy-intensive and costly, limiting large-scale application. This study proposed an energy-efficient, medium-temperature treatment method for fly ash and evaluated its environmental risks. Molecular dynamics simulations were conducted to elucidate the underlying mechanisms of heavy metal stabilization. The study revealed that co-sintering fly ash with clay at 750°C and 950°C led to a significant reduction in heavy metal leachability, with Pb and Zn concentrations decreasing by 97.4% and 61.7%, respectively. The sintered products developed new fibrous mineral phases, predominantly wollastonite and rankinite, within which heavy metal ions were incorporated through isomorphic substitution for Ca2+ in the crystal lattice, leading to stable immobilization. Sequential extraction analysis showed that the chemical forms of heavy metals shifted from acid-soluble to more stable reducible and oxidizable fractions after treatment. Consequently, the environmental risk levels of Zn and Pb decreased from moderate to negligible, while that of Cd was reduced from high to negligible. Long-term leaching tests under simulated acid rain conditions confirmed that the sintered products maintain high stability during prolonged environmental exposure.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Wenwen Li,Wenhui Wei,Xiaoyu Wang,Tao Wu,Yingrong Zhong,Mengyao Xu,Guanchen Xu,Yuanyuan Tao,Dongwei Li,Xingshuang Zhang
Developing air purification systems with stability and reusability under harsh conditions remains a significant challenge. In this study, we designed a polyimide (PI) molecular structure and incorporated MXene nanosheets rich in active surface groups (–O, –OH, and –F) into the PI matrix using moisture-assisted electrospinning technology. This approach successfully constructed a biomimetic, wavy, and fluffy fiber structure. The results demonstrated that the MXene-modified PI fiber membrane exhibited outstanding superhydrophobicity (water contact angle of 151.74°), alongside superior mechanical properties (tensile strength of > 9 MPa), and thermal stability (decomposition temperature of > 500°C). The gradient pore size distribution effectively retained and captured PM while reducing air flow resistance. The fabricated filter achieved a removal efficiency of 99.99% for PM 2.5 with a low pressure drop (29.13 Pa), far lower than the 120.60 Pa pressure drop of PI OPA filters. Furthermore, the filter maintained stable filtration efficiency after five washing cycles, demonstrating excellent reusability.
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Advanced Science
·
2026
·
IF 14.1
Xuefeng Zhang,Yujia Wu,Huayu Xu,Jinyi Ye,Yanfang Yang,Haohan Wu,Jiayi Lu,Hao Li,Dongxiao Kan,Jingfeng Wang,Hui Kang,Zhimin Fan
Titanium carbide (Ti 3 C 2 T x ) MXene has attracted broad interest owing to its versatile functional properties. However, its intrinsic instability in aqueous environments drives spontaneous surface oxidation to insulating TiO 2 , resulting in pronounced performance degradation and posing a major obstacle to practical utilization. Here, we propose an erasure-purification strategy that selectively targets surface-derived oxide phases on oxidized MXene. By constructing an ion-confined interfacial environment followed by a brief acid-washing step, further oxidation is mitigated while pre-existing TiO 2 is selectively removed. The recovered MXene exhibits restored colloidal stability and can be reassembled into conductive films delivering high volumetric capacitance and favorable rate performance. In addition, the purified MXene demonstrates competitive low-frequency electromagnetic attenuation and low infrared emissivity in assembled forms. This approach is applicable to MXene with different morphologies and oxidation states, offering a practical and generalizable route for reclaiming and reusing oxidized MXene materials.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Wanting Su,Ruimeng Wang,Pengfei Yan,Zuxue Bai,Xuehui Jia,Xu Fan,Liqin Zhou,Zhenxia Zhao
Nanoplastic (NPs) pollution represents one of the most persistent environmental crises of our time, requiring breakthrough material technologies for effective remediation. In this study, we engineer a semi-flexible micro-nano structured N-modified cellulose nanofibers@layered double hydroxide (N-CNF@LDH) composite aerogel through a dynamic hydrogen bonding and coordination interactions to achieve efficient removal of NPs, in which the LDH nanoflower clusters are uniformly anchored on the nitrogen-modified cellulose honeycomb skeleton. Under the action of dynamic hydrogen bonds, the structure undergoes spontaneous reorganization at new equilibrium positions upon release of external force, leading to a reversible opening-closing motion within the floral clusters. This design enables ultrahigh NPs adsorption (3648 mg·g −1 ) through reversible inter-petal channel opening, while compression-triggered petal contraction achieves instantaneous release (96% within only 10 s), exhibiting a desorption kinetics rate nearly three orders of magnitude higher than conventional adsorbents. Besides, the dynamic network enables rapid structural reconstruction of N-CNF@LDH through H-bond assembly, maintaining 80.4% NPs capacity and 95.2% shape recovery after 100 cycles. Exhibiting outstanding NPs removal performance in various real-world water systems while remaining cost-effective, this material breaks through the fundamental capacity-regeneration compromise in environmental remediation.
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ACS Applied Nano Materials
·
2026
·
IF 5.8
Si-Chen Tan,Fu-Rui Teng,Yue Huang,Shuai Zhang,Ai-Dong Li
Flexible strain sensors have garnered significant interest in healthcare monitoring, intelligent robots, and human–computer interaction. Nevertheless, it is difficult for conventional hydrogel strain sensors to achieve high sensitivity, a wide stretching range, and good self-healing performance simultaneously. Herein, we fabricated a poly(acrylic acid) (PAA) nanocomposite hydrogel strain sensor by incorporating Pt nanoparticles (NPs)-modified MXene and tannic acid (TA) to the hydrogel network (denoted as PAA-TA@Pt@MXene). The structure, morphology, and mechanical and sensing properties have been investigated. The optimal processing for the hydrogel strain sensor was obtained, such as TA contents and Pt NPs loading amount. The optimized sensor exhibits high sensitivity with a gauge factor (GF) of 4.62, an ultrastretchable range up to 2862%, better self-healing efficiency of 84.9%, and robust durability of 1500 cycles, indicating superb mechanical properties. This can be ascribed to the synergistic effect of TA and Pt NPs decorated with MXene. TA evidently increases the hydrogen bond density and strength between PAA and MXene, conducive to stretchability and self-healing. In addition, Pt NPs improve the charge carrier between Pt and MXene due to the tunneling effect, which is beneficial to the GF value. Moreover, the combination of excellent sensing performance and good skin adhesion enables the sensors’ powerful human motion detection capability. The PAA-TA@Pt@MXene sensors achieve a 98.3% accuracy rate in various gesture recognitions after 10 epochs using a convolutional neural network. Our work provides an effective method for significantly enhancing the performance of self-healing hydrogel strain sensors with an ultrawide working range, thereby promoting their application in flexible electronics.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xuefeng Sha,Xianyin Song,Qiwei Shangguan,Yawei Lv,Fan Zeng,Xingang Zhang,Xueli Wu,Minghao Yu,Changzhong Jiang
MXene has emerged as a promising alternative to carbon-based capacitor materials since its inception, however, the current practical implementation still faces dual challenges: environmentally hazardous, time-consuming synthesis procedures and intrinsically low-concentration pseudocapacitive active sites. Herein, a short-duration, eco-friendly and high-efficiency double fluoride salt hydrothermal strategy was proposed to fabricate Ti 3 C 2 MXene with unparalleled electrochemical properties. A comprehensive and good balance, including rapid MAX phase etching, just-right titanium terminal water oxidation, and ammonia reduction activation, is achieved via a one-step NH 4 HF 2 hydrothermal reaction at 160 °C for merely 1 h (TOR-MXene). It drastically outperforms conventional HF acid etching at 60 °C for 48 h (P-MXene). Systematic experimental characterizations (HRTEM, SAXS, XPS, EXAFS, EPR and in-situ XRD, in-situ Raman) and DFT calculations consistently reveal that instead of the generally believed pore expansion, the abundant highly-reduced titanium dioxide nanoclusters anchored on the surface of MXene exhibit substantial pseudocapacitive activation, accompanied by the threshold Bader charge of Ti atoms exceeding 10.5 |e|. Consequently, the prepared TOR-MXene delivers a remarkable specific capacitance of 446.1 F g −1 even at the ultrahigh current density of 30 A g −1 , a sixfold improvement over the P-MXene of 74.8 F g −1 . Moreover, the TOR-MXene electrode displays around 91.2% capacitance retention over 50,000 cycles, showing an extremely high cycling stability. This strategy establishes atomic-level design principles for MXene-based energy storage, advancing efficient synthesis and performance optimization.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Danhong Gao,Shang Li,Xianjie Xu,Hongwei Liu,Hanling Deng,Qianyao Lu,Dusong Hou,Sheng Huang,Mingzhi Jiao,Xiaowei Li,Xinjian He
Rapid and reliable detection of methane (CH 4 ), a key clean energy source and potent greenhouse gas, is of great importance for industrial safety and environmental protection. In this work, a high-performance CH 4 gas sensor is developed based on hollow ZnO nanobowls decorated with Pd nanoparticles, synthesized via a template-assisted strategy followed by mild impregnation. The hollow nanobowl architecture features a uniform particle size (~350 nm), ordered mesopores (~3.4 nm), and a high specific surface area of 104.06 m 2 g −1 , which effectively enhances gas diffusion and surface reaction kinetics without relying on complex heterojunctions or bimetallic systems. The introduction of Pd increases the oxygen vacancy content from 29.41% to 41.48%, provides additional active sites, and facilitates electron transport. Moreover, Pd catalyzes O 2 dissociation via a spillover effect and lowers the activation energy for C H bond cleavage in CH 4 , while the work function difference between Pd and ZnO induces a Schottky barrier at the interface, dynamically modulating the sensor conductivity. Benefiting from the synergistic effects of morphological regulation and interfacial electronic modulation, the sensor exhibits a high response of 67% to 1000 ppm CH₄ at an operating temperature of 253.5 °C, along with an ultrafast response/recovery time of 2/10.5 s and a wide detection range of 20–10,000 ppm. In addition, the sensor demonstrates good selectivity and excellent long-term stability, with less than 10% signal fluctuation over 30 days. Building upon the reliable concentration discrimination validated by CNN-1D models, an LSTM-based short-term dynamic prediction framework was further introduced to evaluate temporal early-warning performance under rapid methane concentration variations. The results demonstrate that the proposed sensor–algorithm integration can effectively capture dynamic concentration evolution and accurately predict the 5000 ppm alarm threshold across multiple diffusion rates, highlighting its potential for early-warning applications in confined spaces.
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Small Methods
·
2026
·
IF 8.7
Huibin Guan,Li Zeng,Ziqin Wu,Weishan Tang,Xiaolong Li,Hanna He,Chuhong Zhang
Red phosphorus (P), with high theoretical specific capacity and environmental benignity, represents a promising anode material for lithium-ion batteries (LIBs). However, its practical application is hindered by intrinsic limitations, such as poor electronic conductivity and substantial volume fluctuation, resulting in sluggish redox reaction kinetics and compromised reaction reversibility. Herein, we design a 3D P-bonded radially-oriented Ti 3 C 2 microsphere composite electrode (P80/MS-Ti 3 C 2 ) via an innovative electrostatic spraying technique. The unique, highly conductive, radially-oriented Ti 3 C 2 matrix uniformly and tightly encapsulates P nanoparticles within the channels, which establish continuous ion/electron pathways and prevent the aggregation of 2D Ti 3 C 2 sheets. Simultaneously, the formation of robust Ti-O-P covalent bonds at the interface significantly enhances the intrinsic electronic conductivity and alleviates the volume expansion and exfoliation of red P during cycling. The synergistic integration of stabilized covalent interfaces and meticulously-engineered architecture endow the optimized P80/MS-Ti 3 C 2 electrode with high reversible specific capacities and outstanding cycling stability, achieving 1269.5 mAh g − 1 at 500 mA g − 1 after 700 cycles and 1064.3 mAh g − 1 at 1 A g − 1 after 1000 cycles even under a high P loading of 36.7%, with P approaching its theoretical capacity. This work provides an effective structural and interfacial engineering strategy to overcome the fundamental challenges of P-based electrodes, demonstrating great potential for high-performance LIBs.
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