eScience
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2024
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IF 42.9
Yan Gao,Xiao Chen,Xu Jin,Chenjun Zhang,Xi Zhang,Xiaodan Liu,Yinhui Li,Yang Li,Jinjie Lin,Hongyi Gao,Ge Wang
Developing advanced nanocomposite phase change materials (PCMs) integrating zero-energy thermal management, microwave absorption, photothermal therapy and electrical signal detection can promote the leapfrog development of flexible wearable electronic devices. For this goal, we propose a multidimensional collaborative strategy combining two-dimensional (2D) MXene nanosheets with metal-organic framework-derived one-dimensional (1D) carbon nanotubes (CNTs) and zero-dimensional (0D) metal nanoparticles. After encapsulating paraffin wax (PW) in three-dimensional (3D) networked multidimensional MXene/CoNi–C, the resulting composite PCMs exhibit excellent thermal energy storage capacity and long-term thermally reliable stability. Benefiting from the synergistically enhanced photothermal effects of CNTs, Co/Ni nanoparticles and MXene, PW@MXene/CoNi–C can capture photons efficiently and transfer phonons quickly, yielding an ultrahigh photothermal conversion and storage efficiency of 97.5%. Additionally, PW@MXene/CoNi–C composite PCMs exhibit high microwave absorption with a minimum reflection loss of −49.3 dB at 8.03 GHz in heat-related electronic application scenarios. More attractively, the corresponding flexible phase change film can simultaneously achieve thermal management and electromagnetic shielding of electronic devices, as well as photothermal therapy and electrical signal detection for individuals. This functional integration design provides an important reference for developing advanced flexible multifunctional wearable materials and devices.
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高影响因子
Micromachines
·
2024
·Vol. 15
·期 12
·1486
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IF 3
Yuqi Wang,Yong Liu,Minmin Wang,Wenjun Wu,Maofei Tian,Tao Zhu
This study introduces the development of a W-M1.0electrochromic film, characterized by a “coral”-like TiO2@WO3heterostructure, synthesized via a hydrothermal process leveraging the inherent instability of MXene. The film showcases exceptional electrochromic performance, with a coloring response time of 2.8 s, a bleaching response time of 4.6 s, and a high coloring efficiency of 137.02 cm2C−1. It also demonstrates a superior light modulation ability of 73.83% at 1033 nm. Notably, the W-M1.0film exhibits remarkable cyclic stability, retaining over 90% of its initial light modulation capacity after 4000 cycles, outperforming many existing electrochromic materials. The film’s enhanced performance is credited to its coral-like structure, which boosts the specific surface area and promotes ion transport, and the TiO2@WO3heterojunctions, which enhance charge transfer and stabilize the material. Devices fabricated with the W-M1.0film as the cathode and a PB film as the anode exhibit a seamless transition from dark blue to colorless, underscoring their potential for smart window and dynamic glass applications.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2024
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IF 18.5
Zonglin Liu,Xu Zhao,Fuhua Xue,Liangliang Xu,He Chen,Zhong Chen,Qian Yan,Jinhua Xiong,Haowen Zheng,Pengyang Li,Huanxin Lian,Yunxiang Chen,Qingyu Peng,Xiaodong He
MXenes, a burgeoning family of 2D materials with high conductivity and large specific surface area, are ideal electromagnetic absorbing materials. However, the ample polar functional groups lead to poor dispersion in the non-polar matrix, limiting its application in non-polar-polymer-based composites. With the help of the shear rheological properties of SiO 2 , the conflict is resolved here by directly dispersing MXene aqueous dispersion into the non-polar resin. Water is locked dynamically through SiO 2 nanoparticles among the MXene@SiO 2 nanosheets, suppressing MXene's self-restacking and aggregation in the resin matrix. Therefore, the fabrication of uniform MXene/non-polar polymer composites is achieved. Meanwhile, this method allows different nanoparticles (Fe 3 O 4 , etc.) to be evenly dispersed among the MXene nanosheets to further improve the composites' electromagnetic parameters. The as-prepared composites achieve remarkable absorbing performance with a low MXene concentration (≤5 wt.‰). The SMEP-h achieves the maximum reflection loss value of over 60 dB at 12 GHz (at the thickness of 2.15 mm), and the SMEP-F possesses a broad effective absorbing bandwidth of over 6.18 GHz (at the thickness of 1.75 mm). The shear-rheological-assisted MXene dispersion method in the non-polar matrix paves an avenue for the design of outstanding MXene-based electromagnetic absorbing composites.
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Journal of Materials Chemistry C
·
2024
·
IF 5.7
Rongbin Li,Yan Sun,Qianyu Zhao,Xin Hao,Haowei Liang,Shengang Xu,Yingliang Liu,Xiaoman Bi,Shaokui Cao
The resistive-switching-based logic gates are the promising electronic components for future digital logic operation in integrated circuits based on resistive random access memories (RRAMs). In particular, the logic gates controlled by near-infrared (NIR) light within the tissue optical window become more attractive in the practical application of in vivo manually controlled biocompatible microchips. In this work, fibrous MXene@MAPbI3-based resistive switching storage devices that are NIR-responsive at 1064 nm are prepared via a simple dip-coating process by introducing monolayer Ti3C2Tx-TBAOH MXene nanosheets with an excellent NIR absorption into the perovskite precursor solution. The 0.05 wt% Ti3C2Tx-TBAOH-modified MAPbI3-based RRAM device achieves the highest ON/OFF ratio of approximately 108, which is two orders of magnitude higher than the pristine device. Ti3C2Tx-TBAOH-modification produces a low SET voltage of +1.34 V under 1064-nm laser illumination compared with +2.22 V in the dark. More interestingly, the 1064-nm laser illumination on the Ti3C2Tx-TBAOH-modified device presents a well-defined NIR-responsive state at 1064 nm in the perovskite RRAM device and finally realizes NIR-controlled logic gates at 1064 nm for in-memory computing, such as “AND”, “OR” and “NOT”. This kind of NIR-responsive fibrous resistive switching logic device has potential application in future e-textiles as fundamental building blocks for integrated data-storing and information-processing function, especially in the in vivo manually controlled biocompatible microchips.
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Biomaterials Advances
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2024
·
IF 5.5
Xingyu Zhou,Wendi Ma,Junhui Jiang,Junbo Dang,Ruifu Lv,Hongbo Wang,Minna Ma,Dahui Sun,Mei Zhang
On account of the existence of antibiotic resistance, the wound healing of pathogenic infection is still a challenge in modern society. A desirable wound dressing should own the abilities of adhesiveness, hemostasis and good mechanical property, meanwhile the property of eliminating bacteria without side effects is also highly needed. In this work, we established a kind of hydrogel based on carboxymethyl cellulose-graft-tyramine (CMC-Ty) and MXene (Ti 3 C 2 T x ) through employing H 2 O 2 /HRP (horseradish peroxidase) as the initiator, then the as-prepared hydrogel (named CMC-Ty/MXene) was immersed in tannic acid (TA) solution, and this TA-treated hydrogel was called CMC-Ty/MXene+TA. By employing TA as the multi-functional H-bond provider, the adhesiveness, hemostatic ability, mechanical property and bactericidal performance of the hydrogel was enhanced. And MXene in this system exerted benign photothermal antimicrobial performance, it was able to transform near-infrared (NIR) light into heat, then the bacteria would be physically damaged (thermal destruction) due to the hyperthermy, hence the antibacterial effect of which will not be restricted by antibiotic resistance. The temperature of the hydrogel in the experimental group can be increased by 25 °C after irradiation by 808 nm NIR light for 10 min, and the bactericidal efficiency against both E. coli and S. aureus reached >99 %. In vivo tests demonstrated that with the assistance of NIR irradiation, the hydrogel can distinctly accelerate the S. aureus infected wound closure. We envisage that this non-antibiotic dependent multifunctional photothermal hydrogel can provide a promise for bacteria-invaded wound healing.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Jian Lu,Chenye Dai,Shilong Li,Dong Zou,Yuqing Sun,Wenheng Jing
Similar physicochemical properties render the separation of Li + /Mg 2+ from salt lake brine difficult for two-dimensional (2D) membranes. Herein, ultraefficient Li + /Mg 2+ separation was achieved under the influence of an electric field using MXene/carbon nanotube (CNT) membranes developed on tubular ceramic substrates via thermal crosslinking. Crosslinking reactions between CNTs and MXene yielded well–intercalated CNTs between MXene nanosheets, forming antiswelling MXene/CNT membranes (MCMs) (interlayer spacing: 8.04 Å) suitable for Li + /Mg 2+ separation. At 2.8 V applied voltage, the MCMs exhibited Li + flux of 0.0491 mol m −2 h −1 and high Li + /Mg 2+ selectivity of 54.5, which outperform existing state–of–the–art 2D membranes. Specifically, under a positive electric field, Li + with a small hydration diameter and low hydration energy permeated through the membrane nanochannels more easily than Mg 2+ , increasing and decreasing Li + and Mg 2+ flux, respectively. Additionally, Mg 2+ retention was enhanced via the complexation of enriched Mg 2+ with –OH and –COOH on the membrane surface. The MXene membrane surface was thus reconfigured to be positively charged, inducing effective Mg 2+ rejection. This study offers a novel and practical approach for efficiently separating Li + /Mg 2+ as well as monovalent/multivalent ions.
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CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Jingyu Song,Yongqian Shen,Guibin Zhang,Mingxuan Sun,Mengyao Han,Xueyan Du
While two-dimensional lamellar materials, specifically Ti 3 C 2 T x MXenes, have shown great promise as wave-absorbing materials, the precise design of interlayer spacing poses a persistent challenge. In this study, Ti 3 C 2 T x MXene layers with adjustable interlayer spacings were crafted using a straightforward molecular welding technique. Through the incorporation of Ni nanoparticles onto the Ti 3 C 2 T x MXene layers using a combination of simple mechanical stirring and carbonation reactions, we successfully developed Ti 3 C 2 T x MXene/Ni/C composites featuring a distinct lamellar structure. A uniform dispersion of Ni nanoparticles on the surface of the Ti 3 C 2 T x MXene nanosheets was found with some of the nanoparticles intercalated into the layers. The Ti 3 C 2 T x MXene/Ni/C composites exhibited a maximum reflection loss (RL) value of −42.3 dB at 12.3 GHz, accompanied by an impressive effective absorption bandwidth (EAB) of 5.6 GHz. This outstanding absorption performance could be attributed to various factors, including the dielectric loss of the Ti 3 C 2 T x MXene lamellae, reflections and scattering of multiphase heterostructures, the magnetic loss of the Ni nanoparticles, and their synergistic attenuation. Furthermore, Ni nanoparticles with high electrical conductivity induced vortex currents under the alternating influence of electromagnetic waves (EMWs), resulting in a substantial depletion. This study introduces an innovative approach for synthesizing Ti 3 C 2 T x MXene/Ni/C composites with tunable interlayer spacing, showing their potential for applications in microwave absorption (MA).
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
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IF 8.1
Xueqin Zhu,Minjian Yang,Chunnian Zheng,Qin Zhu,Zhili Cui,Piaopiao Zhang
Exploiting magnesium-based hydrogen storage materials faces great challenges due to their inherent thermodynamic and kinetic characteristics. However, this issue can be mitigated by employing a catalyst doping modification strategy. In this work, a composite of titanium carbide (Ti 3 C 2 T x MXene)-supported nickel fluoride (NiF 2 ) nanoparticles, known as NiF 2 @Ti 3 C 2 , was fabricated via the hydrothermal approach and utilized to reinforce the hydrogen storage performance of magnesium (Mg). It was shown that NiF 2 @Ti 3 C 2 composites have exceptional catalytic properties for Mg hydrogen storage. The Mg–NiF 2 @Ti 3 C 2 composite, containing 5 wt% of NiF 2 @Ti 3 C 2 , released 3.46 wt% of hydrogen at 300 °C, while pure Mg produced essentially little hydrogen in identical conditions. Additionally, there was a decrease in the activation energy of hydrogen desorption from 135.4 to 77.65 kJ mol −1 . Moreover, the composite offered excellent stability and reversible performance, achieving 95.8% capacity retention after 10 consecutive testing cycles. During the hydrogen uptake and release process, the NiF 2 @Ti 3 C 2 composite interacted with Mg/MgH 2 to produce the metals Ti 0 , MgF 2 , and Mg 2 Ni/Mg 2 NiH 4 , which acted as active species to boost the hydrogen storage performance of Mg.
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COMPOSITES SCIENCE AND TECHNOLOGY
·
2025
·
IF 9.8
Zi-Long Zhang,Liang Tao,Jing-Wen Wang,Ying-Jie Ma,Yang Zhang
The focus on composite films with high dielectric properties is largely attributable to their extensive range of applications in electrical equipment. Nevertheless, there is a recognized issue concerning the fact that the dielectric properties of the materials do not fully satisfy the mounting performance requirements in practical applications. In this work, the heterostructure of MnO 2 grown on the surface of 2D transition metal carbide Ti 3 C 2 MXene doped with carbon quantum dots (CD-MnO 2 @MXene) has been successfully obtained through hydrothermal reaction. CD-MnO 2 @MXene was combined with poly (dimethyl siloxane)-based copolymers (D-PDMS) to form the PDMS-based dielectric composites (CD-MnO 2 @MXene/D-PDMS) via solution casting method. The CD-MnO 2 @MXene/D-PDMS composite containing 2.17 vol% of CD-MnO 2 @MXene exhibits an enhanced dielectric constant of 42.2 at 100 Hz, which is 12 times and 1.58 times higher than that of the pure matrix and the CD@MXene/D-PDMS composite, meanwhile the loss is only 0.07. These results validate that the CD-MnO 2 @MXene/D-PDMS composite possesses excellent dielectric properties and low energy loss compared with other nanocomposites, thus can be widely used in advanced electronic devices such as actuators and sensors.
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SENSORS AND ACTUATORS A-PHYSICAL
·
2025
·
IF 4.9
Zhirui Zhao,Qiao Chen,Shengcai Du
Flexible pressure sensors are integral to the advancement of next-generation wearable electronics, electronic skins, and human–machine interfaces. However, the concurrent realization of lightweight design, mechanical stability, and high sensitivity remains an ongoing challenge. Here, we present a high-performance flexible pressure sensor based on a polyurethane (PU) sponge integrated with Ti₃C₂Tₓ MXene nanosheets, iron nanowires (Fe NWs), and waterborne polyurethane (WPU). The 2D MXene provides superior electrical conductivity, while the 1D Fe NWs interconnect discontinuous regions within the porous structure, forming a robust three-dimensional conductive network. WPU facilitates uniform dispersion and strong interfacial bonding between the conductive fillers and the sponge matrix, thereby enhancing both mechanical integrity and sensing stability. The resulting sensor exhibits a high sensitivity of 6.9 kPa⁻¹ , a broad sensing range up to 15 kPa, rapid response and recovery times (97 ms and 66 ms, respectively), and excellent durability over 3000 mechanical cycles. In addition to reliable pressure detection, the device enables dual-functional capabilities, including real-time spatial pressure mapping using a 4 × 4 sensor array, localized Joule heating under mechanical stress, and accurate grip monitoring when integrated into wearable gloves. The sensor is fabricated via a cost-effective, scalable dip-coating method, offering practical advantages for industrial production. This work not only demonstrates a synergistic assembly strategy of 2D/1D nanomaterials within porous elastomeric frameworks but also paves the way for multifunctional, wearable sensing platforms capable of addressing real-world application demands in healthcare, robotics, and human–environment interaction.
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Advanced Materials Technologies
·
2025
·
IF 6.2
Ziping Wang,Zhenbo Yuan,Xiangyu Zhuo,Runyu Duan,Zhaorui Li,Yongjie Bi,Mei Zhuang,Ning Li,Guangli Zhou,Chao Teng,Xiaoyan Ma
Effective electromagnetic interference (EMI) shielding materials, in combination with excellent EMI shielding effectiveness and superior mechanical strength, are required to be to meet the development of modern electronics and aerospace, which has remained a key challenge. Based on this, MXene/Poly(p-phenylene-benzodioxazole) nanofibers (PNFs) heterogeneous paper containing Ti 3 C 2 T x MXene nanosheets, and a PNFs substrate is prepared using a two-step vacuum-assisted filtration process. The heterogeneous MXene/PNFs paper offers the benefits of favorable mechanical properties with the tensile strength of 292.63 ± 9.88 MPa and strain-to-failure of 7.09 ± 0.48% and simultaneously boasts high conductivity of 48190.99 ± 4118.23 S m −1 , EMI shielding effect of 47.07 dB, and outstanding SSE/t of 101759.78 dB cm 2 g −1 . The functional partition design of heterogeneous papers provides a feasible idea for the development of effective EMI shielding paper applications.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Jiahao Liu,Jie Yang,Xueming Tang,Ruobing Tian,Guohua Zhang,Jiahang Yang,Yan Jiang,Yuanna Sun
Wearable MXene-based hydrogels hold significant promise for flexible electronics due to their tissue-compliant mechanics and exceptional electrical properties, yet their practical deployment is fundamentally challenged by MXene’s rapid oxidation in aqueous environments. To address this limitation, we develop an oxidation-resistant nanocomposite hydrogel through multi-hydrogen-bond reinforcement using poly (N-acryloyl glycinamide) (PNAGA), cellulose nanocrystals (CNC), and MXene. In this design, hydroxyl groups on CNC form robust hydrogen bonds simultaneously with the PNAGA network and MXene surface functional groups, establishing a ternary protective barrier that sterically isolates MXene from water/oxygen exposure while enhancing nanosheet dispersion and mechanical reinforcement. The resulting PNAGA-CNC-MXene (NCM) hydrogel achieves a high electrical conductivity of 0.59 S/m alongside superior mechanical properties. As an integrated sensor, it exhibits dual functionality: strain sensing with a gauge factor of 2.91 and 260 ms response speed, coupled with temperature detection at high sensitivity (-2.16 %/ºC) and 0.1 ºC resolution. Critically, Bluetooth-enabled wireless transmission facilitates real-time monitoring of physiological signals on mobile devices. This hydrogen-bond network strategy not only resolves MXene’s oxidation-stability conflict but also advances NCM hydrogels as versatile platforms for next-generation wearable electronics, personalized health monitoring, and human-machine interfaces.
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