CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Sairao Zhao,Xiao Luo,Yongfa Cheng,Zhixiang Shi,Tao Huang,Shanghua Yang,Haojian Zheng,Yun Bi,Jun Zhang,Qiuyue Shi,Minglei Cao,Chuankun Zhang,Yang Yue,Yanan Ma
Ti 3 C 2 T x MXene with unique physical and chemical properties are recently sparked tremendous interest in the energy storage field. Compared to Ti 3 C 2 T x , V 2 CT x MXene is a more promising candidate for energy storage due to a low number of atomic layers in the V 2 CT x structure and varied valence states of vanadium. Herein, we report a flexible V 2 CT x electrode with different layers (named accordion-like V 2 CT x , multi-layer V 2 CT x , and few-layer V 2 CT x, respectively) fabricated by using electrophoretic deposition, then assembled a flexible zinc ion hybrid capacitor (ZIHC) by virtue of zinc anode and gel electrolyte. The areal capacitance of few-layer V 2 CT x based ZIHC is 54.12 mF cm −2 at 0.1 mA cm −2 , which is greater than those of accordion-like V 2 CT x and multi-layer V 2 CT x based ZIHC. The outstanding electrochemical performance of few-layer V 2 CT x based ZIHC is attributed to its richer active sites and shorter ion transport routes. Additionally, the few-layer V 2 CT x based ZIHC also owns well cycling stability, with 81.48 % capacity retention after 8000 cycles, and a low self-discharge rate of 6.4 mV h −1 , making it suitable for wearable devices. So, the V 2 CT x based ZIHC is integrated with a Ti 3 C 2 T x based pressure sensor to monitor diverse human activities, demonstrating its steady and long-term power supply capacity as the energy storage device.
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CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Yu Xu,Haoyu Qi,Mingming Sun,Zongxu Liu,Qing Liu,Kang Li,Wei Guo
While light-driven motors that can exhibit characteristic response have attracted significant research attention, they generally lack a stable and editable structure for exploration the versatile motions and their practical applications. Herein, a MXene/Polyurethane (PU) motor with robust “brick-and-mortar” structure was configured as the platform to study the light-driven self-propelled behaviors and mechanisms. Our experimental and theoretical results demonstrated that the external near-infrared laser (NIR) light stimulus triggers the photothermal Marangoni effect to create the local difference in surface tension, which serves as the driving force to overcome the flow resistance. The MXene/PU motor floating on the water phase exhibited programmable motion under the irradiation of NIR light, especially, complex motions such as directed motion, clockwise and counterclockwise rotations, and intermittent motion (alteration between resting and moving states). More interestingly, the MXene/PU motor can not only move along any complicated routes such as maze but also execute the stir task at designated place on the water surface. We believe that the fabricated MXene/PU motor has potential to fundamentally solve challenges in cargo transport and beyond, and the concept of remote motion-control of micro-objects by external stimulus can inspire further explorations of design of self-propelled motors and systems.
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TOPICS IN CATALYSIS
·
2022
·Vol. 66
·期 1
·12-21
·
IF 2.781
Zhong Cheng,Shang Zhichao,Zhao Caixian,Luo He’an,Cao Yi,Yan Dejian,You Kuiyi
In order to obtain a high photoelectrochemical performance, co-catalysts loading is the most commonly used way, which can facilitate reactions and suppress the charge recombination. In this paper, a novel composite of ZnO/Ti 3 C 2 T X photoanode was fabricated by a facile spin coating of precipitating Ti 3 C 2 T X (MXene) flakes onto the surface of ZnO, as co-catalyst for enhanced photoelectrochemical (PEC) water splitting. Under simulated sunlight, the optimum composite of ZnO/Ti 3 C 2 T X photoanode showed the photocurrent density as 1.2 mA cm −2 at 1.23 V RHE , which is 1.4 times higher than that of pristine ZnO without Ti 3 C 2 T X co-catalyst (0.83 mA cm −2 at 1.23 V RHE ). The ZnO/Ti 3 C 2 T X photoanode showed a photoconversion efficiency of 0.32% and maintained a stable photocurrent over 2000s. The Ti 3 C 2 T X (MXene) flakes as co-catalyst to promote the charge transfer and accelerates the reaction kinetics in ZnO/Ti 3 C 2 T X photoanode. This work delivers a two-dimensional (2D) material Ti 3 C 2 T X (MXene) as co-catalyst for enhanced ZnO photoanode PEC water splitting.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Liu Ying,Ma Jianfeng,Guo Luyao,Xu Xinhua
Advanced sensation and actuation abilities of various living organisms in nature have inspired researchers to design bioinspired somatosensory soft actuators. However, the majority of conventional soft actuators primarily possess actuation capabilities while lacking real-time sensing signal feedback. Here, a promising strategy is reported to develop highly stretchable and conductive hydrogels for bioinspired somatosensory soft actuators, which integrate actuation and strain-sensing functions into a single materials system. The conductive hydrogels are designed and synthesized by in situ copolymerization of polydiallyldimethylammonium chloride functionalized MXene (P-MXene) nanosheets and poly N-isopropylacrylamide-co-acrylic acid (PNIPAm/PAA) hydrogels. The resulting hydrogels exhibit the dual-crosslinked conductive network and porous microstructure, enabling the seamless combination of excellent strain sensitivity, high conductivity, rapid responsiveness, high stability, and extensive stretchability. Interestingly, the anisotropic network structure, formed by electrically driven nanosheet gradient distribution of P-MXene nanosheets, endows the hydrogel with shape-programmable deformation, light-driven remote control, and self-sensing capability. As a proof-of-concept application, a soft gripper based on self-sensing hydrogel actuators has been developed, which can not only grasps, lifts, and releases objects but also detects its movement states by monitoring resistance variations. The proposed somatosensory soft actuator can offer promising perspectives for the advancement of smart soft robotics and other artificial intelligent devices.
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JOURNAL OF ELECTRONIC MATERIALS
·
2025
·
IF 2.5
Yang Xiaoli,Zhang Xiaomin,Zhang Han,Cong Yuhan,Wang Zitan,Ye Erkang
MXene-based hydrogels have become important materials for epidermal applications due to their excellent conductive properties and biocompatibility. Nonetheless, the application of such materials in the epidermal field is limited because of insufficient mechanical properties, unidimensional stimulus response, and complex preparation methods. In this study, an MXene-based hydrogel with outstanding self-healing, temperature sensitivity, and pH sensitivity was prepared by a one-pot method at 60°C for 5 h. The hydrogel is composed of Ti 3 C 2 T x MXene nano-slices, polyacrylamide (PAM), poly( N -isopropylacrylamide) (PNIPA), and polyacrylic acid (PAA), denoted as MXene/PAM/PNIPA/PAA hydrogel (MPANA hydrogel). The MPANA hydrogel exhibits excellent mechanical properties. Its tensile strength, elastic modulus, toughness, and elongation at break are 2.79 MPa, 0.64 MPa, and 51 MJ/m 3 , 412%, respectively, which indicates that the hydrogel possesses good stretchability. Moreover, the MPANA hydrogel demonstrates good self-healing ability, attaining an average strain self-healing efficiency of 94%, achieved in 12 h. Additionally, the MPANA hydrogel shows impressive thermal response sensitivity (−1.3560% °C −1 ) and a rapid pH response time (32–53 s). In conclusion, the MPANA hydrogel has significant potential for applications in epidermal sensors. Graphical
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NANOTECHNOLOGY
·
2024
·Vol. 35
·期 34
·345402
·
IF 2.9
Ruixue Liu,Sainan Wei,Bao Shi,Yizhi Ma,Luning Sun,Wei Wang
The continuous advancements in wearable electronics have drawn significant attention toward 2D MXenes materials for energy storage owing to their abundant availability, adaptability, and distinctive physicochemical properties. Two unresolved concerns currently revolve around environmental pollution by F-containing etching and finite kinetics caused because of re-stacking of nanosheets. In this study, Al was electrochemically etched from porous Ti2AlC electrodes without the use of fluorine, through a selective electrochemical etching process in dilute hydrochloric acid. Subsequently, Ti2CTx MXene was vertically grown on carbon fiber (CF) substrates. The resulting Ti2CTx@CF electrodes are lightweight, thin, and flexible, exhibiting a surface capacitance of 330 mF cm−2 at a constant current density of 1 mA cm−2 after 2000 cycles. They display a surface capacitance retention of 96.16% and a high energy density of 45.3 μWh cm−2 at a power density of 0.497 mW cm−2. These metrics underscore the Ti2CTx@CF electrode's commendable multifunctionality, electrochemical performance, ion transport efficiency, and charge storage capacity. Moreover, a flexible energy storage electrode material with a high area capacity was developed by combining Ti2CTx MXene nanosheets, possessing a large specific surface area, with a flexible carbon fabric substrate.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jie Gao,Li-Bo Huang,Xianghao Meng,Lei Xia,Fan Yi,Zexuan He,Zeyu Pei,Changting Hong,Guo Wang,Yuhan Wang,Zhongyi Jiang
Nanofiltration holds significant potential for mitigating water scarcity, yet reconciling high selectivity with efficient mass transfer remains a critical challenge. MXene membranes enable precise molecular sieving through interlayer spacing, while covalent organic framework (COF) membranes leverage penetrating pores for rapid mass transfer. However, MXene membranes suffer from restricted permeability and structural instability, whereas COF membranes face limitations in achieving small-sized pores and compromising sieving efficiency. Herein, we fabricate a heterostructured MXene/COF membrane by synergistically manipulating interlayer spacing of MXene with penetrating pores of COF via sequential vacuum-assisted self-assembly. Matched surface hydrophilicity and electrostatic property between MXene and COF render robust interfacial adhesion. The optimal MXene/COF membrane exhibits a water permeance of 356.6 ± 24.1 L m −2 h −1 bar −1 and a CR rejection of 99.8 %, along with excellent operational stability during 48-hour continuous filtration. The MXene/COF membrane opens a novel avenue for fabricating versatile heterostructured membranes for advanced separations.
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高影响因子
SENSORS
·
2025
·Vol. 25
·期 8
·2508
·
IF 3.5
Hanxue Yang,Chao Rong,Shundong Ge,Tao Wang,Bowei Zhang,Fu-Zhen Xuan
HighlightsWhat are the main findings?3D crumpled MXene with strain wrinkles enhances conductivity and prevents restacking.Cu nanoclusters (3.0 wt%) synergize N-doping for noble metal-like catalytic activity.What is the implication of the main finding?Ultrasensitive dual-analyte non-enzymatic detection of DA/UA with anti-interference capability and rapid response.Novel material design strategies provide new approaches for the development of future high-performance sensors.Simultaneous detection of dopamine (DA) and uric acid (UA) is essential for diagnosing neurological and metabolic diseases but hindered by overlapping electrochemical signals. We present an ultrasensitive electrochemical sensor using copper nanoclusters anchored on nitrogen-doped crumpled Ti3C2TxMXene (Cu-N/Ti3C2Tx). The engineered 3D crumpled architecture prevents MXene restacking, exposes active sites, and enhances ion transport, while Cu nanoclusters boost electrocatalytic activity via accelerated electron transfer. Structural analyses confirm uniform Cu dispersion (3.0 wt%), Ti-N bonding, and strain-induced wrinkles, synergistically improving conductivity. The sensor achieves exceptional sensitivity (1958.3 and 1152.7 μA·mM−1·cm−2for DA/UA), ultralow detection limits (0.058 and 0.099 μM for DA/UA), rapid response (<1.5 s), and interference resistance (e.g., ascorbic acid). Differential pulse voltammetry enables independent linear detection ranges (DA: 2–60 μM; UA: 5–100 μM) in biofluids, with 94.4% stability retention over 7 days. The designed sensor exhibits excellent capabilities for DA and UA detection. This work provides a novel design strategy for developing high-performance electrochemical sensors.
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高影响因子
Smart Medicine
·
2025
·Vol. 4
·期 2
·e70006
·
IF 11.6
Zehua Gong,Linjie Chen,Xiaolei Zhou,Chunwu Zhang,Dražen Matičić,Dražen Vnuk,Zhifeng You,Linjin Li,Huaqiong Li
Osteoarthritis (OA) is a physical lubrication microenvironment-inadequate disease accompanied by a sustained chronic chemical inflammation microenvironment and the progression of articular cartilage destruction. Despite the promising OA treatment outcomes observed in the enhancement of lubrication inspired by ball bearings to reduce friction and support loads, the therapeutic effect of near-infrared (NIR) irradiation-based photothermal-responsive controlled release “smart hydrogel microspheres” on OA remains unclear. Here, we prepared MXene/NIPIAM-based photothermal-responsive injectable hydrogel microspheres encapsulating diclofenac sodium using a microfluidic system. Consequently, NIR irradiation-based photothermal-responsive controlled release “smart hydrogel microspheres” demonstrate beneficial therapeutic effects in the treatment of OA by modulating the physical lubrication and chemical chronic inflammation microenvironment, laying the foundation for the application of smart hydrogel microsphere delivery systems loaded with bioactive factors (including agents, cells, and factors) to regulate multiple pathological microenvironments in regenerative medicine.
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POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Qinling Liu,Junhan Chu,Yuhui Xie,Zhaoyu Li,Feng Wu,Dong Feng,Yang Meng,Yi Mei,Delong Xie
s The development of high-performance flame-retardant polypropylene (PP) composites is essential for enhancing fire safety across various industries. However, conventional intumescent flame retardant systems often suffer from poor char stability, weak condensed-phase protection, and insufficient gas-phase flame inhibition. To address these challenges, this study introduces a synergistic system combining Si-modified MXene (Si-MXene) and piperazine-modified ammonium polyphosphate (PAPP) to enhance the flame retardancy of PP composites. The piperazine modification of PAPP improves its compatibility with PP, facilitating uniform dispersion and enhancing its catalytic charring capability. Simultaneously, Si-modified MXene reinforces the char layer by promoting the formation of a highly graphitized and compact carbon structure, effectively blocking heat and oxygen transfer. As a result, the Si-MXene/PAPP system significantly reduces the peak heat release rate (PHRR) of PP by 52.6% and total heat release (THR) by 35.4%, while substantially improving thermal stability and char quality. Moreover, gas-phase analysis confirms that phosphorus radicals (P·, PO·) and non-flammable gases (NH₃, H₂O) scavenge combustion free radicals and dilute flammable volatiles, effectively suppressing flame propagation. This study provides a novel approach to de veloping high-efficiency flame-retardant PP composites, offering new insights into the synergistic mechanisms of MXene-based hybrid flame retardants and advancing the design of eco-friendly, high-performance polymeric materials for safety-critical applications.
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BIOMACROMOLECULES
·
2025
·
IF 5.4
Shan Yu,Ling Wang,Mengdie Chen,Yanjun Chen,Zhenbo Peng
Myocardial infarction (MI) remains one of the leading causes of mortality worldwide, necessitating advanced therapeutic strategies to address the resulting electrical disconnection and pathological remodeling. This study developed a conductive hydrogel by covalently cross-linking silk fibroin and hyaluronic acid, integrating MXene nanosheets to mimic the extracellular matrix (ECM). Results demonstrated that the incorporation of MXene significantly enhanced the hydrogel’s conductivity, with SH-M5 exhibiting the highest conductivity of 0.32 S/m. The SH-M5 hydrogel effectively improved electrical signal transmission and enhanced the recovery of the left ventricular function in myocardial infarction. These findings underscore the transformative role of MXene in enhancing the functional properties of hydrogels for myocardial repair. The conductive hydrogel demonstrated a unique capacity to integrate mechanical reinforcement, electrical conductivity, and biocompatibility, presenting a promising platform for treating myocardial infarction and advancing regenerative medicine.
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高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Jingjing Gao,Yadong Wang,Li Ma,Zongmin Zhu,Fei Xiao
The development of biodegradable polymers with excellent flame retardancy and mechanical robustness remains a critical challenge for sustainable materials. In this paper, a novel MXene nanohybrid (MXene-PPD) was prepared by grafting organic phosphorus-containing polymer onto MXene using interface engineering strategy. The incorporation of merely 2.5 wt % MXene-PPD into poly(lactic acid) (PLA) matrix remarkably enhances its flame retardancy, elevating the limiting oxygen index (LOI) from 19 % to 23.1 % and achieving a UL-94 V-0 rating. Cone calorimetry analysis demonstrates a 11 % reduction in peak heat release rate (PHRR) for the PLA/2.5MXene-PPD composite compared to neat PLA. The superior interfacial adhesion of MXene-PPD in PLA composites facilitates efficient stress transfer, resulting in demonstrated enhancements of up to 13.6 % in tensile strength and 13.9 % in impact resistance compared to unmodified PLA. These findings highlight the potential of MXene-PPD as an effective additive for developing high-performance biodegradable polymers.
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