ACS Applied Nano Materials
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2025
·
IF 5.5
Yuchen Yong,Shaowei Wu,Lihui Liu,Chengxiu Yang,Yan Liu,Haomiao Wang,Yuhang Qin,Yuan Ren,Peisen Li,Qi Zhang,Mengchun Pan,Jiafei Hu
Current flexible piezoresistive sensors face the common problem that there is always a mutual limitation between high sensitivity and a wide measuring range, causing the current highly sensitive sensors to concentrate only on a narrow range. In this work, inspired by biological architecture, we design a needle-shaped column array decompression structure, combined with chitosan-modified polyurethane foam-coated MXene nanosheets as the sensor active layer. By leveraging the decompression of the needle column structure and the high elasticity properties of the porous structure, the piezoresistive sensor demonstrates a broad testing range of 550 kPa and a maximum sensitivity of 428.94 kPa–1 in the measurable range, which are 10 and 2 times higher than those of existing studies. Combined with medical devices, the designed devices can meet the testing requirements of different scenarios to accurately capture all kinds of training and human movement behavior recognition in the rehabilitation medical process. We provide a strategy in which introducing a voltage divider structure in the active layer enables flexible piezoresistive sensors to combine high sensitivity with a several-fold increase in range.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Wei Huang,Ling Ding,Dianhui Wang,Ping Cai,Jing Wang,Ruixiang Gao,Haiqing Hu,Yashuai Ye,Chengwen Huang,Xiaogang Xue,Hongliang Peng,Lixian Sun
An appropriate electron transport layer (ETL) or cathode buffer layer (CBL) is critical for high-performance perovskite solar cells (PVSCs). In this work, tetrabutylammonium hydroxide (TBAOH)-functionalized Ti3C2Tx MXene (TBAOH-Ti3C2Tx) is developed to improve the photovoltaic performance of PVSCs. TBAOH-Ti3C2Tx is synthesized by HF etching and then TBAOH intercalation, and TBAOH can effectively attach to the Ti3C2Tx surface during the intercalation process. In hole transport material (HTM)-free carbon-based PVSCs with the structure of ITO/ETL/MAPbI3/carbon, the SnO2 doped by TBAOH-Ti3C2Tx (SnO2:TBAOH-Ti3C2Tx) as ETL shows decreased WF and increased conductivity and improves the growth of the perovskite film with a larger grain and significantly reduced defects, which synergistically facilitate charge transport and extraction and reduce charge recombination. The HTM-free carbon-based PVSC with SnO2:TBAOH-Ti3C2Tx ETL exhibits a significantly higher PCE of 14.93% with enhanced device stability compared to the control device with pristine SnO2 ETL (11.95%) and also outperforms most of the HTM-free carbon-based PVSCs with MAPbI3 perovskite reported so far. In traditional inverted PVSCs with the structure of ITO/PTAA/MAPbI3/PCBM/CBL/Ag, the TBAOH-Ti3C2Tx is utilized as a CBL to significantly enhance device performance with a high PCE of 21.16%, which is obviously superior than that (16.26%) of the control device without CBL. The impressive results indicate that tetrabutylammonium hydroxide-functionalized Ti3C2Tx MXene possesses great application potential in different functional layers for high-performance PVSCs.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yan Liu,Ling Zhang,Kaiyang Guo,Jingyuan Zhao,Yonglei Xing,Zhuosen Wang,Yapeng Tian,Xinwei Cui
Intercalation pseudocapacitance is the key point to achieving the balance between the volumetric capacitance and the rate performance of energy storage. However, the low pseudocapacitive reactivity of the active center still limits the energy density of the pseudocapacitance devices. Herein, we propose a strategy that regulates the p - d hybridization of confined MXene via the co-doping of B and O atoms (BO-MXene) for outstanding electrochemical performance. Both experiments and density functional theory (DFT) reveal that the inner doped O atoms in low 2 p orbital energy strengthen the hybridization of Ti and electron-deficient B in MXene for high retention of B atoms, weaken the Ti-O covalency in MXene. As a result, the weakened p - d hybridization of Ti and O for the outer surface and strengthened p - d hybridization of Ti and B for the inner, promote the adsorption of protons and electron transfer, respectively. Further, the BO-MXene-based hybrid supercapacitors achieve a significant volumetric energy density of 56.86 Wh L -1 at 25.6 kW L -1 . This electronic structure via tuning the p - d hybridization in MXene proposes a new path for designing proton-confined intercalation pseudocapacitance.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Jia An,Mengfei Luo,Meizheng Li,Hongyuan Cui,Yufei Liu
Choline, as an important neurotransmitter and metabolic substance, plays an important role in human metabolism, information transmission, regulation of apoptosis, and promotion of fat metabolism, etc. Its level changes and metabolic abnormalities can also be used as diagnostic markers for a variety of diseases. In this study, we developed an advanced electrochemical choline biosensor by modifying the electrode surface with MXene, multi-walled carbon nanotubes functionalized with gold nanoparticles (MWCNT-AuNPs), and Fe 3 O 4 nanoparticles (Fe 3 O 4 NPs). MWCNT will be interspersed with MXene to avoid strong interlayer aggregation. At the same time, the composite of AuNPs and MWCNT can avoid the agglomeration of Au and further improve the conductivity under the synergistic effect. Improve sensor performance through synergistic effect, this combination of multi-component nanomaterials may provide higher electron conduction efficiency and current response rates. The electrochemical sensors, which were doped with various nanomaterials, were thoroughly investigated utilizing electrochemical impedance spectroscopy (EIS) in conjunction with time–current curve analysis. The findings demonstrated that the MXene/MWCNT-AuNPs/Fe 3 O 4 NPs nanocomposites possess a substantial specific surface area, an abundance of active sites, and enhanced electrical conductivity, all of which contributed to the improved conductivity and current response of the enzyme electrode. The resulting biosensor demonstrated superior sensitivity and selectivity for choline detection compared to previously reported electrodes. Specifically, it exhibited a linear range of 0.033–133.33 μM, a sensitivity of 8.8nA/μM, a response time of 5 s, and a detection limit of 22 nM. Importantly, the sensor showed high accuracy in detecting choline levels in human serum and cerebrospinal fluid samples, indicating its potential for practical applications in real-world clinical settings. This advancement holds promise for the effective prevention of the recurrence of glioma, Alzheimer’s disease, Parkinson’s disease, and other related conditions.
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Advanced Healthcare Materials
·
2025
·
IF 9.6
Huan Liu,Aminov Nail,Decheng Meng,Liran Zhu,Xiaohan Guo,Cong Li,Xiaoqing Ye,Huanjun Li
Infected wound healing remains a significant clinical challenge, demanding innovative therapeutic strategies to simultaneously address bacterial elimination, tissue regeneration, and controlled drug delivery. Inspired by the hierarchical structure of crocodile teeth, a bioinspired, 3D-printed microneedle patch integrating Mxene nanosheets and a polymerizable deep eutectic solvent (PDES) composed of vinyl pyrrolidone (VP), itaconic acid (IA), and N-isopropyl acrylamide (NIPAM) is developed. The resulting MXene-based eutectogel microneedle (MF-MXene@MN) combines photothermal responsiveness, antioxidant activity, and temperature-triggered drug release for photothermal conversion and reactive oxygen species (ROS) scavenging. The gradient-height design inspired by crocodile teeth enhances tissue adhesion, while DLP 3D printing enables personalized wound dressing geometries with <50 µm resolution. In vitro and in vivo studies demonstrated a 94.88% wound closure rate within 10 days, 3.2-fold increased angiogenesis, 68% reduced bacterial viability ( S. aureus : 32.59%; E. coli : 48.17% under NIR), and pH-/temperature-responsive mangiferin release (88.3% cumulative release via 5 NIR cycles). These synergistic functions promote wound healing, offering superior antibacterial ability, tissue regeneration promotion, and drug release control compared to traditional wound dressings and microneedle systems. This multifunctional platform integrates bioinspired design, stimuli-responsive materials, and additive manufacturing, providing a transformative solution for precision wound management.
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高影响因子
Advanced Science
·
2022
·Vol. 10
·期 6
·2205303
·
IF 17.521
Yimei Xie,Yongfa Cheng,Yanan Ma,Jian Wang,Junjie Zou,Han Wu,Yang Yue,Baowen Li,Yihua Gao,Xin Zhang,Ce-Wen Nan
With the increasing popularity of smart wearable devices, flexible pressure sensors are highly desired in various complex application scenarios. A great challenge for existing flexible pressure sensors is to maintain high sensitivity over a wide temperature range, which is critical for their applications in harsh environments. Herein, a flexible piezoresistive sensor made of polyetherimide (PEI) fibrous network evenly covered with MXene nanosheets is reported to construct conductive pathways, showing ultrahigh sensitivity over a wide temperature range from −5 °C (sensitivity of 80 kPa −1 ) to 150 °C (20 kPa −1 ), low detection limit of 9 Pa, fast response time of 163 ms, outstanding durability over 10 000 cycles at room temperature, 2000 cycles at 100 °C and 500 cycles at −5 °C. The pressure sensor can monitor various human activities in real-time, apply to human–machine interaction, and measure pressure distribution. It also can sensitively respond to external mechanical stimuli at 150 °C and extremely low temperature (in liquid nitrogen). Moreover, the fibrous network exhibits an excellent Joule heating performance, which can reach 78 °C at an applied voltage of 12 V. Thus, the piezoresistive sensor has considerable potential for wearable garments and personal heating applications in harsh temperature conditions.
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Materials Today Nano
·
2025
·
IF 8.2
Pingan Chen,Sizeng Hong,Xiangcheng Li,Yingli Zhu,Fu Chen,Mengke Qiao
Carbon nanofibers can be widely used in the field of electromagnetic wave absorption due to corrosion resistance, low density and good chemical stability. Here, we report a strategy to achieve strong microwave absorption capability by adjusting the crystallinity of carbon nanofibers containing Al 2 O 3 and TiO 2 . TiO 2 with Ti 3 C 2 T x MXene as a precursor decreases the crystallization temperature of Al 2 O 3 from 1400 °C to 800 °C in the carbon nanofibers. The diameter distribution of carbon nanofibers is uniform, though the surface of carbon nanofibers is getting rough with Ti 3 C 2 T x content increasing. The minimum reflection loss of carbon nanofibers is -55.78 dB at a thickness of 4.32 mm; the effective absorption bandwidth reaches 5.41 GHz (12.59-18 GHz) at a thickness of 1.67 mm, almost covering the Ku band. The excellent microwave absorption performance can be attributed to the synergistic effect of the non-crystalline carbon matrix and crystalline Al 2 O 3 /TiO 2 , in which the former improves impedance matching with free space, while the latter enhances the attenuation capability to the electromagnetic wave.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Zhen-wei Guo,Yan-fen Mo,Meng-yuan Luo,Yu-hui Xie,Dong Feng,Feng Wu,Yi Mei,Delong Xie
Ammonia is commonly used as a preservative for natural rubber, but its high volatility and strong irritation to the human respiratory tract pose significant health risks. In this study, we utilized the layered two-dimensional nanomaterial Ti 3 C 2 T x (MXene) as an antimicrobial agent and synthesized MXene-SiO 2 nanocomposites by intercalating KH550-modified silica nanoparticles into MXene. This nanocomposite was then incorporated into a MXene-SiO 2 /low-ammonia preservation system. The results demonstrated that this novel system effectively preserved concentrated natural latex over a four-month period. Throughout this time, the volatile fatty acid (VFA) values remained below 0.1, the pH was stable at approximately 10, the mechanical stability time (MST) exceeded 700 s, and viscosity remained around 300 mPa·s—meeting the requirements for subsequent processing. The introduction of the MXene-SiO 2 nanocomposite into the preservation system had no adverse effects on the structure or performance of the dry film. The system exhibited excellent film-forming properties and promoted the formation of a cross-linked network in the vulcanized film. As a result, the tensile strength of the vulcanized film reached 22.87 MPa, a 64% increase compared to pure natural latex vulcanized film. this study provides an effective and environmentally friendly approach for preserving natural latex while simultaneously enhancing the mechanical properties of its vulcanized film.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Menghan Guo,Yifan Wang,Wenqing Wang,Fuyang Li,Gang Ye,Yifan Yan,Pengfei Qi,Kexin Luo,Rui Wang
Thermal sensing materials capable of monitoring critical fire risks of combustible materials with a rapid response show great potential in early fire warning. However, the thermoelectric materials used in current fire-warning systems usually have low mechanical strength and poor flexibility, limiting their application in harsh environments and in wearable devices. In this work, a class of multilaminated MXene/aramid nanofiber (ANF)/poly(ethylene glycol) (PEG) composite film (MAP) was developed by a vacuum-induced self-assembly method. Because of the compatibility of the hybrid building units with reinforced interconnections, the MAP films exhibit excellent mechanical properties in terms of tensile strength (139.9 MPa), toughness (20.7 MJ/m3), strain (23.1%), modulus (6.1 GPa), and durability (fold times: 39,991). Moreover, the MAP films showed superior fire retardancy with the LOI value of 35%, exhibiting rapid self-extinguishing capability. Significantly, taking advantage of the thermoelectric effect and continuous conductive paths of MXene nanosheets, rapid cyclic contact/noncontact fire warning (<1 s) was achieved. Integrating the MAP film into the IoT system enabled remote real-time fire monitoring and feedback with a rapid response. In addition, the MAP film can be employed as an early fire-warning coating on textiles, further expanding its wearable fire alarm scope. This work provides a perspective for designing robust wearable early fire detection sensors and fire protection applications.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Yang Shi,Pei Liu,Zhenluo Yuan,Xiaojiao Wang,Qiuming Peng,Shumin Han,Yanping Fan,Baozhong Liu
The exploitation of high-performance catalysts is essential for practical application of hydrogen production technology by ammonia borane (AB) hydrolysis. In this work, we reported an uncomplicated approach to exploit high-performance catalysts for hydrogen production from AB hydrolysis. Using the reducibility of AB, the Ru 0 /Mo 2 C MXene catalyst was synthesized using Mo 2 C MXene as carrier to hydrogen production from AB hydrolysis. The combination of Mo 2 C MXene and Ru nanoparticles exhibited remarkable catalytic performance. The TOF value was 868.6 min −1 and the hydrogen production rate reached as high as 210,464 mL min −1 g Ru −1 at 298 K. Moreover, the Ru 0 /Mo 2 C MXene catalyst showed good durability and continuously produce hydrogen for more than 4 h with a turnover number (TON) of 41293. Characterization analysis revealed that Mo 2 C MXene regulated the coordination environment of Ru, forming electron-rich Mo 2 C MXene and electron-deficient Ru sites. And excellent catalytic activity is benefiting from the enhanced interaction between Mo 2 C MXene and Ru nanoparticles, promoting the effective activation and dissociation of the reactants, which resulted in the improvement of the performance of AB hydrolysis. This work offers an innovative approach to synthesize efficient AB hydrolysis catalysts for hydrogen production.
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Small
·
2025
·
IF 12.1
Qi Ao,Lin Jiang,Ying Song,Xinglai Tong,Tuohao Jiang,Jun Tang
Enzyme immobilization has emerged as a promising strategy to facilitate the industrialization of biomolecules. However, immobilized systems are now still facing great challenges such as maintaining enzyme activity, large-scale manufacturing recovery and leaching or conformational changes of enzymes. Therefore, advanced enzyme immobilization techniques (efficient, stable and tunable catalysis) are currently an important challenge in this field. Here, enzyme@cyclodextrin covalent organic framework films are synthesized by template method and further constructed three-dimensional (3D) hydrogen bond-enhanced efficient MXene/enzyme membrane reactor. This strategy provides a spacious microenvironment for the release of enzyme molecules, a simpler process, an easier-to-etch template, a more biocompatible carrier. Furthermore, a versatile platform for interfacial photothermal and fast mass-transfer by constructing films with MXene. The obtained biocatalysts have excellent reusability, high activity and stability, which can be used as efficient biocatalysts for important industrial reactions. The enzyme membrane reactor is constructed by the ‘smart capsule ’ with enzyme@cyclodextrin-COF structure. The strategy can solve the challenging problems of the original previous enzyme immobilization system. Overall, a new idea is provided for the green, efficient, stable and sustainable general enzyme catalytic platform.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Md. Zahid Hasan,Chuanghua Xu,Lei Luo,K.Z.M. Abdul Motaleb,Md Foysal Ahmed,Sirui Tan,M.Mahbubul Bashar,Jolanta Janutėnienė,Chengfei Yue,Hu Tu,Sha Sha,Guangming Cai,Ruquan Zhang
Conductive hydrogel has garnered significant fascination for its potential as wearable sensor. However, designing a wearable sensor with excellent electrical conductivity, self-healing capability, mechanical strength and recyclability is still difficult to accomplish. Herein, a multifunctional composite hydrogel was fabricated via a one-pot method with cellulose microcrystals (CMCs) and MXene. The introduction of CMCs to the hydrogel composite provided mechanical strength and assisted in homogeneous distribution of MXene resulting the high electrical conductivity. The subsequently prepared conductive composite hydrogel exhibited improved tensile strength (87.4 kPa) and elongation at break (424 %) with optimum composition, outstanding electrical conductivity (1.11 S/cm) and quick electrical self-healing efficiency without external stimuli. The temperature responsiveness of the conductive composite hydrogel was mainly accredited for reducing interfacial thermal resistance ensuing of continuous heat conduction pathways. It also demonstrated the notable fire resistance offering quick fire-warning signals within ∼1 sec. The developed conductive composite hydrogel could monitor subtle human movements efficiently as well as possessed the ability to track human body temperature, indicating effective means of electronic skin (E-skin) for smartphone interfacing. This work introduces a feasible approach in designing an electrically conductive, biodegradable wearable composite hydrogel with potential applications as versatile motion, temperature and fire sensor.
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