CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Wang Guo,Zhiqiang Ma,Zhou Chen,Haojun Hua,Dong Wang,Mohamed Elhousseini Hilal,Yatian Fu,Pengyi Lu,Jian Lu,Yuanting Zhang,Derek Ho,Bee Luan Khoo
Increasing demand for flexible sensors in healthcare has spurred the development of nanomaterial-polymer composite sensors. However, existing pressure sensors suffer from low sensitivity due to poor interactions between the functional filler and the polymer matrix. For example, the direct chemical bonding of nanomaterials to the surface of chemically inert polymers such as polydimethylsiloxane (PDMS) is not easily achieved. Herein, we demonstrate that MXene can significantly promote the sensitivity of a thin and soft piezoresistive sensor based on a surface functionalized PDMS (FPDMS) sponge. Using plasma treatment, we constructed a MXene-FPDMS (MFP) sponge with high mechanical strength via the interlayer hydrogen bonding effect. The formed MFP sponge structure (∼450 μm in thickness) endows the pressure sensor with a high sensitivity of 14.2 kPa −1 and a low modulus of 9.7 kPa, critical for detecting ultra-low pressures. When operated with deep learning algorithms, the MFP sponge sensor successfully classifies the pronunciation of 26 letters and various polite expressions with an average accuracy of 94 ± 0.6 %. We envision that this work paves the way for the development of intelligent wearable platforms.
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高影响因子
Applied Materials Today
·
2024
·
IF 7.2
Qianqian Qiao,Jinyu Wang,Bingjiao Li,Yuhao Guo,Tao Liao,Ziqiang Xu,Ying Kuang,Cao Li
Photothermal therapy (PTT)-based combination therapy is an effective approach to cancer treatment. However, there is a possibility of tumor development due to the inflammation caused by PTT. In addition, hyperthermia can cause damage to normal tissues. This work reported a drug delivery/cascade enzyme system based on Ti 3 C 2 T x MXene nanosheets. Ultra-small, degradable mesoporous silica nanoparticles (DS-MSN) were prepared to load phloretin (Phl), which has anti-inflammatory, antioxidant, and anticancer properties. Subsequently, glucose oxidase (GOx) was adsorbed on the surface of DS-MSN. The nanoparticles were then modified on Ti 3 C 2 T x MXene nanosheets and finally treated with polyethylene glycol (PEG) to obtain the multifunctional system named Ti 3 C 2 T x -Phl@DS-MSN-GOx-PEG (TPDMGP). The high near-infrared photothermal conversion efficiency of Ti 3 C 2 T x made it suitable for PTT. GOx and Ti 3 C 2 T x formed a cascade enzyme system inside cancer cells: Ti 3 C 2 T x exhibited catalase (CAT)-like activity that decomposed intracellular hydrogen peroxide (H 2 O 2 ) into O 2 , which was provided to GOx for enhanced starvation therapy. GOx in the presence of O 2 produces H 2 O 2 , for the oxygen production of Ti 3 C 2 T x . Meanwhile, DS-MSN could be degraded in the reducing environment inside cancer cells as it contains disulfide bonds in its backbone, thus releasing Phl for chemotherapy. Such a combination therapy strategy could achieve a satisfactory therapeutic outcome by low-temperature PTT while evading normal tissue damage by high temperature. The anti-inflammatory effects of both Ti 3 C 2 T x and Phl enabled TPDMGP to eliminate the inflammation caused by PTT via the scavenging of reactive oxygen species (ROS). The multifunctional system is expected to generate new paradigms for cancer PTT.
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Siyuan Diao,Lili Meng,Christian Mark Pelicano,Jiajia Huang,Zhihong Tian,Feili Lai,Tianxi Liu,Shaokui Cao
Photothermal responsive hydrogels are widely used in bionic soft actuators due to their remote-controlled capabilities and flexibility. However, their weak mechanical properties and limited responsiveness hinder their potential applications. To overcome this, we developed an innovative laponite/MXene/PNIPAm (LxMyPN) nanocomposite hydrogel that is mechanically robust and exhibits excellent photothermally responsive properties based on abundant hydrogen bonds. Notably, laponite clay is used as a co-cross-linking agent to improve the mechanical properties of LxMyPN hydrogel, while MXene nanosheets are added to promote the photothermal responsiveness. The resulting L3M0.4PN nanocomposite hydrogel exhibits enhanced mechanical properties, with a compressive strength of 0.201 MPa, a tensile strength of 90 kPa, and a fracture toughness of 27.25 kJ m–2. In addition, the L3M0.4PN hydrogel displays a deswelling ratio of 73.6% within 60 s and experiences an excellent volume shrinkage of 82.4% under light irradiation. Furthermore, hydrogel actuators with fast response behaviors are constructed and employed as grippers capable of grasping and releasing target objects. Overall, this high-strength and fast-responsive hydrogel actuator is beneficial to paving the way for remote controlled soft robots.
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PubMed
高影响因子
Small
·
2025
·
IF 12.1
Ilya Korolev,Anna Bondar,Arina Pavlova,Ksenia Maleeva,Valentina Minisheva,Grigory Ovinov,Ekateriva V. Skorb,Evgeny Smirnov
Portable electrochemical sensors are essential for real-time ion detection in environmental and clinical analysis, with ion-selective electrodes (ISEs) serving as a key platform due to their reliance on polymer membranes (ISMs) and conductive materials for selective recognition. This study compares traditional carbon fiber ISEs (CF-ISEs) with MXene-based alternatives. CF-ISEs use Ag/AgCl with polyelectrolyte transducers (PSS/PEI), while MXene-modified CF-ISEs (MXCF-ISEs) replace polyelectrolytes with MXene to enhance sensitivity. 1) MXene-only electrodes (no additional layers) are fabricated on glass and 2) screen-printed MXene ISEs (SPMXEs) are fabricated on flexible substrates (PVC) for Ca 2 ⁺-ions sensing. All designs are tested in complex media like milk, sparkling and seawater, demonstrating robust performance. MXene's high conductivity and compatibility with printing techniques enable cost-effective sensors without sacrificing accuracy, even without complex modifications. These results highlight MXene's potential to replace conventional materials in next-generation portable sensors, particularly for point-of-care diagnostics and environmental monitoring, where flexibility, sensitivity, and low-cost production are critical.
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PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jingyu Song,Wentao Xu,Jinlin Li,Yongqian Shen,Yingying Shen,Rong Wang,Xueyan Du
A significant challenge metal nanoparticles (NPs) used for electromagnetic wave (EMW) is the precise regulation of the interplay between dielectric and magnetic losses through multi-scale interface engineering, as well as achieving a wide broadband for absorbing materials. In this study, Ti 3 C 2 T x MXene/Ni composites were successfully synthesized in situ via a simple and mild solvothermal method. The influence of the size of Ni NPs on the EMW absorption performance was investigated. The results demonstrate that the size of Ni NPs could be regulated by varying the Ti 3 C 2 T x MXene content, resulting in a synergistic balance between dielectric and magnetic losses, significantly improving wideband impedance matching (3.00–12.80 GHz). The Ti 3 C 2 T x MXene/Ni composites achieved a minimum reflection loss (RL m ᵢ n ) of −50.70 dB at 3.76 GHz, with an effective absorption bandwidth (EAB) of 3.20 GHz. Characterization results reveal that size-dependent permeability dispersion and dielectric relaxation behavior synergistically optimize both impedance matching and loss mechanisms. This study provides a novel design strategy for enhancing the electromagnetic attenuation performance of MXene-based composites.
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高影响因子
Small
·
2022
·Vol. 18
·期 26
·2200857
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IF 15.153
Hao Cheng,Jiameng Wang,Yongqiang Yang,Huixian Shi,Jing Shi,Xiong Jiao,Peide Han,Xiaohong Yao,Weiyi Chen,Xiaochun Wei,Paul K Chu,Xiangyu Zhang
Light-assisted antibacterial therapy is a promising alternative to antibiotic therapy due to the high antibacterial efficacy without bacterial resistance. Recent research has mainly focused on the use of near-infrared light irradiation to kill bacteria by taking advantage of the synergistic effects rendered by hyperthermia and radical oxygen species. However, photocatalytic antibacterial therapy excited by visible light is more convenient and practical, especially for wounds. Herein, a visible light responsive organic-inorganic hybrid of ZnTCPP/Ti 3 C 2 T X is designed and fabricated to treat bacterial infection with antibacterial efficiency of 99.86% and 99.92% within 10 min against Staphylococcus aureus and Escherichia coli , respectively. The porphyrin-metal complex, ZnTCPP, is assembled on the surface of Ti 3 C 2 T X MXene to capture bacteria electrostatically and the Schottky junction formed between Ti 3 C 2 T X and ZnTCPP promotes visible light utilization, accelerates charge separation, and enhances the mobility of photogenerated charges, and finally increases the photocatalytic activity. As a result of the excellent bacteria capturing ability and photocatalytic antibacterial effects, ZnTCPP/Ti 3 C 2 T X exposed to visible light has excellent antibacterial properties in vitro and in vivo. Therefore, organic-inorganic materials that have been demonstrated to possess good biocompatibility and enhance wound healing have large potential in bio-photocatalysis, antibacterial therapy, as well as antibiotics-free treatment of wounds.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Xianhong Zheng
MXenes have attracted tremendous attention in the area of electrochemical energy-storage devices owing to their high electrical conductivity , pseudocapacitance and two-dimensional lamellar structure . Nevertheless, MXene flakes intrinsically tend to lie flat and restack, resulting in highly tortuous ion transport pathways and inferior ion accessibility. Herein, we develop a femtosecond laser ablation strategy to fabricate flexible and high-performance MXene ribbon supercapacitor electrodes. The fabricated MXene ribbons have porous edges with exposed continuous lamellar channels, which shortens the H + transport pathways, impregnates with sufficient electrolyte, benefits for H + intercalation and ion storage. The resultant MXene ribbons exhibit high specific capacitance (1308.3 mF/cm 2 ), good rate capability and long cycling life (95% capacitance retention and 92% coulombic efficiency after 30,000 cycles). This work provides a new strategy for the rational structure design of high-rate MXene-based supercapacitor electrodes and lays the foundation for the next generation high-performance energy storage devices.
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高影响因子
VACUUM
·
2024
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IF 3.8
Chunjiao Liu,Xiaodong Li
MXene can generate high-temperature pulses (HTP) by the physical/chemical coupling effect under laser irradiance and is a good initiator for laser ignition. The main obstacle in the application on laser ignition of MXene based materials is the incomplete oxidation and reduced energy output resulting from the inert TiO 2 passivation layer. In this study, we proposed an efficient approach to significantly enhance the thermal oxidation and energy release under laser irradiance by decorating hydrophobic 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFTE). The CFx produced by the decomposition of PFTE under laser irradiance can react with Ti atoms on the surface of MXene to prevent the formation of the oxide layer. This process releases a large amount of heat and completely oxidizes MXene. As expected, some rutile nano-crystals are distributed on the surface of fully oxidized MXene and the energy output of MXene/PFTE composite is 6.1–8.3 kJ/g which is much higher than pristine MXene. The mechanism of the thermal oxidation process is proposed to explain the enhanced energy output of the MXene/PFTE by thermal analysis and time-resolved emission spectrum (TR OES). Furthermore, the MXene/PFTE membrane significantly enhanced the laser ignitibility of 2,4,6,8,10,12-(hexanitrohexaaza)cyclododecane (CL-20) reducing the laser intensity and shortens the ignition time.
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高影响因子
ADVANCED ENGINEERING MATERIALS
·
2025
·
IF 3.3
Yuhao Luo,Qian Zhu,Lei Cao,Lanlan Fan,Feng Gu,Shixian Xiong
Flexible micro-supercapacitors (FSCs), with their outstanding flexibility and low weight, offer great potential for a wide range of applications in the field of flexible electronics. Herein, the few-layer Ti 3 C 2 T x MXene hybridized with commercial PEDOT:PSS dispersion are used as ink for aerosol jet printing (AJP) to fabricate interdigitated and double-helix electrodes on 2D polyethylene terephthalate (PET) films and 1D thermoplastic polyurethane fibers, respectively. By controlling the evaporation behavior of aerosol microdroplets during the printing process, a transformation from 2D Ti 3 C 2 T x MXene nanosheets to 3D wrinkled spherical structures on the surface of the flexible substrate is achieved, which increases the accessibility of ions to the electrochemical active sites. In addition, the introduction of PEDOT:PSS as a “bridge” connecting the Ti 3 C 2 T x MXene-wrinkled spheres not only enhances the electronic conductivity within the electrode but also improves the bending stability of the electrode. Consequently, the optimized MXene/PEDOT:PSS-based planar and fiber-architectured FSCs exhibit excellent areal capacitance and flexible stability. This work highlights the significant potential of AJP technology in developing electronic devices with fascinating functionalities on various flexible substrates.
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高影响因子
Small Methods
·
2023
·Vol. 7
·期 8
·2201526
·
IF 12.4
Yongqiu Xian,Bin Wang,Zifeng Lin
MXenes have been extensively explored as supercapacitor electrodes, especially in acidic aqueous electrolytes, where ultrahigh specific capacitance can be achieved; however, their narrow working potential window (≤ 1.0 V) limits the acquisition of high energy. Neutral and alkaline electrolytes can be used to extend the working potential window but MXenes in these electrolytes are less pseudocapacitive active, which leads to reduced charge storage. In this study, it is shown that Ti 3 C 2 T x MXene in a mild AlCl 3 aqueous electrolyte can operate at a wide potential range from 0 to −1.3 V versus Hg/Hg 2 SO 4 and retain high pseudocapacitive activity. Thus, a high capacity of up to 85 mAh g −1 is achieved, surpassing its performance in H 2 SO 4 electrolyte of 78 mAh g −1 . More interestingly, most of the capacity is released at a more negative potential range than that in acidic electrolytes, making it more suitable as a negative electrode material. In situ electrochemical quartz crystal microbalance results suggest that the high capacity originates from the pseudocapacitive intercalation/deintercalation of H + instead of Al 3+ , providing the possibility of coupling MXene anodes with proton redox active cathodes to achieve high-energy and high-power devices.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wenlong Luo,Qianwen Liu,Baozhong Zhang,Jie Li,Ruidong Li,Tingxi Li,Zhiqiang Sun,Yong Ma
MXene nanosheets are susceptible to self-accumulation during operation, which significantly hampers their application. However, this issue can be effectively addressed through the introduction of intercalation materials. In this study, an MXene/reduced graphene oxide (rGO)/carbon nanotubes (CNTs) (MGC) film is prepared using vacuum-assisted filtration. CNTs and rGO nanosheets, as intercalation materials, play a crucial role in forming a stable interlayer structure with MXene nanosheets, resulting in an expansion of the MXene layer spacing and the creation of multi-directional stable ion transport channels. Consequently, a larger number of ion-accessible active sites are exposed. The prepared MGC film exhibits an impressive specific capacitance of 463.5F g −1 at a current density of 1 A g −1 . Furthermore, it is noteworthy that the asymmetric supercapacitor (ASC) assembled with the MGC film as the negative electrode and MnO 2 as the positive electrode demonstrates a large voltage window of 1.7 V, a high energy density of 33.95 Wh kg −1 at a power density of 814.8 W kg −1 , and an outstanding capacitance retention rate of 92.9% after 8000 cycles at 3 A g −1 . The optimization strategy for MGC electrodes not only showcases the feasibility of MXene development but also provides crucial technical support for the application of MXene in the emerging generation of portable and flexible wearable energy storage devices.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wei Zheng,Zequn Yang,Jiefeng Chen,Mingguang Zhang,Hongxiao Zu,Ruiyang Qin,Wenqi Qu,Jianping Yang,Lijian Leng,Hailong Li
Utilization of monolithic mineral sulfide-based sorbent for the fix-bed elemental mercury (Hg 0 ) removal is regarded as a predominant predicament in the field of Hg 0 abatement. In this work, a general and facile route was exploited to establish CuS particles decorated 3D porous Ti 3 C 2 T x MXene aerogel via divalent Cu 2+ cations induced assembly combined with subsequent high-temperature sulfurization treatment, during which, uniform CuS particles were homogeneously anchored throughout the Ti 3 C 2 T x substrate. The obtained 3D CuS/Ti 3 C 2 T x MXene aerogel exhibited satisfactory textural property, hierarchical pore structure and strong interaction between Ti 3 C 2 T x MXene and CuS. Meanwhile, the inherent restacking of Ti 3 C 2 T x MXene nanosheet and serious agglomeration of CuS can also be effectively avoided in the formation of aerogel. Those structural advantages originating from this novel gelation process favorably contributes to satisfactory Hg 0 mass transfer and sufficient utilization of CuS active ligands, which largely strengthens Hg 0 removal performance and broadens the fix-bed application of mineral sulfides. Consequently, the Hg 0 capture capacity and adsorption rate of CuS/Ti 3 C 2 T x MXene aerogel reached 90596.4 g m −3 and 120.64 g m −3 min −1 , respectively, far outbalancing those of the reported in-situ selenized copper foam with excellent Hg 0 removal activity. The impressive Hg 0 sequestration performance is attributed to its relatively large specific surface area, layered pore channel, and highly dispersed CuS particles, largely boosting Hg 0 mass transfer and following sequestration. Moreover, other mineral sulfides/Ti 3 C 2 T x MXene aerogels can also be constructed by just replacing divalent metal cations, which makes the initial effort towards the fix-bed utilization of mineral sulfides-based aerogel for vapor-phase Hg 0 immobilization.
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高影响因子
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