INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Yiming Zhang,Zhipeng Li,Baihua Qu,Xing Shen,Le Tong,Jin Wang,Jingqin Cui,Xin Li,Qingshui Xie,Jingfeng Wang
Sodium metal, with its high theoretical capacity, low redox potential, and cost-effectiveness, presents a promising anode candidate for next-generation high-energy-density batteries. However, the development of Na metal anodes is significantly challenged by issues such as uncontrolled dendrite growth, uncontrolled volume expansion, and associated safety concerns. Designing and developing advanced materials to enhance the conductivity of sodium metal anodes and promote uniform sodium ion deposition are of urgent importance. Herein, a MXene-based hybrid material was developed by integrating MOF-derived Zn, Co, N, and C dopants with Ti3C2Tx MXene to serve as a hosting substrate for the Na metal anode. The MXene provided a conductive framework, while the MOF-derived dopants introduced sodiophilic sites, promoting uniform Na deposition and mitigating volume expansion. The optimized material demonstrated an average Coulombic efficiency of 99.99% over 3000 cycles and stable cycling for over 5000 h in symmetrical cells and maintained over 80% capacity retention at 3 C after 500 cycles in full-cell tests, highlighting its potential as a robust Na metal anode material.
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Small
·
2022
·Vol. 18
·期 40
·2200263
·
IF 15.153
Ping-Ping He,Xiaoxue Du,Yuan Cheng,Qi Gao,Chang Liu,Xiaowen Wang,Yonghua Wei,Qilin Yu,Weiwei Guo
Stimuli-responsive DNA hydrogels are promising candidates for cancer treatment, as they not only possess biocompatible and biodegradable 3D network structures as highly efficient carriers for therapeutic agents but also are capable of undergoing programmable gel-to-solution transition upon external stimuli to achieve controlled delivery. Herein, a promising platform for highly efficient photothermal-chemo synergistic cancer therapy is established by integrating DNA hydrogels with Ti 3 C 2 T X -based MXene as a photothermal agent and doxorubicin (DOX) as a loaded chemotherapeutic agent. Upon the irradiation of near-infrared light (NIR), temperature rise caused by photothermal MXene nanosheets triggers the reversible gel-to-solution transition of the DOX-loaded MXene-DNA hydrogel, during which the DNA duplex crosslinking structures unwind to release therapeutic agents for efficient localized cancer therapy. Removal of the NIR irradiation results in the re-formation of DNA duplex structures and the hydrogel matrix, and the recombination of free DOX and adaptive hydrogel transformations can also be achieved. As demonstrated by both in vitro and in vivo models, the MXene-DNA hydrogel system, with excellent biocompatibility and injectability, dynamically NIR-triggered drug delivery, and enhanced drug uptake under mild hyperthermia conditions, exhibits efficient localized cancer treatment with fewer side effects to the organisms.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Zhu Qingsong,He Yongtao,Hao Siyu,Wang Peng,He Zimeng
The rapid advancement of 5G communication, radar detection, and marine engineering has intensified the dual challenges of electromagnetic interference and metal corrosion, necessitating materials that integrate high-performance microwave absorption with durable anticorrosion protection. However, traditional absorbing materials often suffer from high density, poor impedance matching, or inadequate corrosion resistance, while binary composites lack sufficient multifunctional synergy. Herein, we reported a ternary MXene-NiO-PPy composite engineered to overcome these limitations. Through in situ polymerization, we constructed a unique “sheet-wire” architecture where NiO nanowires and polypyrrole (PPy) coatings were uniformly anchored on MXene layers. Systematic investigation reveals that the composite with an MXene:NiO:PPy mass ratio of 1:1:0.75 exhibited superior microwave absorption, achieving a minimum reflection loss (RLmin) of − 36.80 dB at 16.16 GHz with a thickness of 7.6 mm. The enhanced absorption mainly originates from dielectric loss associated with conductive loss, interfacial polarization, and dipolar polarization, together with optimized impedance matching and multiple reflection effects within the heterogeneous network. In particular, NiO contributes mainly by constructing abundant heterogeneous interfaces and regulating the local dielectric environment, thereby promoting interfacial polarization and facilitating impedance matching. Meanwhile, when incorporated into waterborne epoxy (WEP) coatings at 1.5 wt% loading, the composite provided outstanding long-term corrosion resistance, as evidenced by a charge transfer resistance of 1.285 × 10 5 Ω·cm 2 after 60 days of immersion in 3.5 wt% NaCl solution. The enhanced protection is associated with the tortuous barrier effect of MXene, the passivation capability of PPy, and the structural reinforcement provided by NiO nanowires.
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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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SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Zihan Zhang,Zheng Wei,Jiyue Qin,Jiangbo Cheng,Sheng Hong
In this work, a core-shell structure powder containing Ti 3 C 2 T x (MXene) and multi-walled carbon nanotube (MWCNT) was synthesized, and the corresponding composite coating was deposited onto the substrate by high-velocity oxygen-fuel (HVOF) spraying. The structural integrity of MWCNT was well-preserved. With the incorporation of MWCNT and MXene, porosity increased from 1.31 % to 1.73 % while H/E ratio enhanced. Compared to the pristine coatings, the reinforced coatings demonstrated superior performance in creep displacement and plastic deformation. This coating further exhibits strain rate sensitivity, with a tendency toward increased plastic deformation as the strain rate rises. The creep mechanism is ascribed to the synergistic effects of multiple deformation modes, including MXene stretching, MWCNT bridging, dislocation and grain boundary sliding.
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ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Jie Yin,Qiuyang Han,Junchuan Zhang,Yunxiu Liu,Xueqi Gan,Kenan Xie,Lu Xie,Yi Deng
After an osteosarcoma resection, the risks of cancer recurrence, postoperative infection, and large bone loss still threaten patients’ health. Conventional treatment relies on implanting orthopedic materials to fill bone defects after surgery, but it has no ability of destroying residual tumor cells and preventing bacterial invasion. To tackle this challenge, here, we develop a novel multifunctional implant (SP@MX/GelMA) that mainly consists of MXene nanosheets, gelatin methacrylate (GelMA) hydrogels, and bioinert sulfonated polyetheretherketone (SP) with the purpose of facilitating tumor cell death, combating pathogenic bacteria, and promoting osteogenicity. Because of the synergistic photothermal effects of MXene and polydopamine (pDA), osteosarcoma cells are effectively killed on the multifunctional coatings under 808 nm near-infrared (NIR) irradiation through thermal ablation. After loading tobramycin (TOB), the SP@MX-TOB/GelMA implants display robust antibacterial properties against Gram-negative/Gram-positive bacteria. More importantly, the multifunctional implants are demonstrated to have superior cytocompatibility and osteogenesis-promoting capability in terms of cell replication, spreading, alkaline phosphatase activity, calcium matrix mineralization, and in vivo osseointegration. Accordingly, such photothermally controlled multifunctional implants not only defeat osteosarcoma cells and bacteria but also intensify osteogenicity, which hold a greatly promising countermeasure for curing postoperative tissue lesion from an osteosarcoma excision.
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Polymers
·
2025
·Vol. 17
·期 22
·3079
·
IF 4.9
Dan Zhou,Qihuang Deng,Liping Yang
In order to improve the electrochromic performance of polyaniline (PANI), porous PANI/vanadium carbide MXene (PANI/V2CTx) composite electrochromic films were prepared via a rapid, facile, and low-cost one-pot electrodeposition method from an aqueous solution composed of aniline and V2CTxfor the first time. The addition of V2CTxwith a 2D layered structure results in the PANI/V2CTxcomposite films exhibiting significantly different morphologies, structures, electrochemical and electrochromic properties from the pure PANI film. The results show that compared with the pure PANI film, the composite film with optimum V2CTxcontent possesses superior electrochromic properties, such as higher optical contrast, switching speed, coloration efficiency, and cycling stability. The improved electrochromic properties of the composite film can be ascribed to its unique porous morphology and strong hydrogen bond and/or electrostatic interaction between PANI and V2CTx. This research demonstrates that the one-pot electrodeposition method and the prepared conductive PANI/MXene composite films have potential applications in various fields.
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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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Journal of Energy Storage
·
2025
·
IF 9.8
Xiaomin Hu,Zhe Chen,Jiayou Ji,Liang Li,Huabo Huang,Shidi Wei
Fiber-shaped supercapacitors (FSCs) serve as optimal energy storage components in wearable platforms. However, traditional fiber materials suffer from poor interfacial cross-linking, disordered microstructures, insufficient active sites, and low electrical conductivity. To overcome these challenges, this research develops Zn-MoO₃/Ti₃C₂Tₓ hybrid fibers via wet-spinning technology employing glacial acetic acid as a coagulation bath, with MoO₃ quantum dots intercalated into Ti₃C₂Tₓ interlayers and Ti₃C₂Tₓ nanosheets cross-linked by Zn 2+ . The resulting hybrid fibers feature expanded interlayer spacing, a large ion-accessible surface area, abundant porous channels, exceptional electrical conductivity, and excellent mechanical properties, delivering an exceptional volumetric capacitance of 2078.2 F cm −3 at 2 A cm −3 with 75.0 % capacitance retention at 20 A cm −3 . Furthermore, the constructed FSCs achieve a substantial energy density of 55.6 mWh cm −3 at a power density of 400 mW cm −3 , with 94.7 % capacitance retention after 5000 cycles, and successfully power an electronic timer, demonstrating their potential for wearable applications.
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TALANTA
·
2021
·
IF 6.057
Jiaying Zhao,Congjuan He,Weixuan Wu,Huisi Yang,Jiangbo Dong,Li Wen,Zhikun Hu,Mei Yang,Changjun Hou,Danqun Huo
Abnormal expression of microRNAs is greatly associated with the occurrence of various cancer types, revealing great potential of microRNA as biomarkers for cancer diagnosis and prognosis. Herein, a MXene-MoS 2 heterostructure enhancing electrochemical biosensor coupled with catalytic hairpin assembly (CHA) amplification approach for label-free determination of microRNA-21 (miR-21) was successfully assembled. In particular, the unique micro-nano heterostructure with large specific area and favorable electroconductivity exhibited the ability of excellent confinement effect. Thus, rendered the MXene-MoS 2 heterostructure the ability to trigger more target recycling reaction, giving new vitality to the traditional CHA amplification method. Meanwhile, thionine (Thi) and gold nanoparticles (AuNPs) were anchoring at the surface of MXene-MoS 2 heterostructure, respectively, empowered the sensor the capability of capture probes fixation and miR-21 label-free determination. When numerous electronegative double-stranded DNA generated, the electron transfer was greatly hindered, resulting in signal decrease. Accordingly, the design denoted a broad dynamic range from 100 fM to 100 nM and a detection limit of about 26 fM, comparable or lower than previous reported methods for miR-21 detection. Furthermore, the sensing platform supplied satisfactory selectivity , reproducibility and stability towards the miR-21 detection. The real sample determination also showed a promising performance under clinical circumstance. Finally, from the clinical standpoint, the proposed biosensor is a considerable platform toward early disease detection and monitoring.
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ACS Sensors
·
2022
·
IF 9.618
Meiling Lian,Yuqing Shi,Liuxing Chen,Yongji Qin,Wei Zhang,Jingbo Zhao,Da Chen
The inactive adsorption and interference of biomolecules in electrochemical biosensors is a topic of intense interest. Directly utilizing native cell membranes to endow electrochemical surfaces with antifouling and biocompatible features is a promising strategy, rather than attempting to synthetically replicate complex biological interface properties. In this study, we present a facial and sensitive sandwich-type antifouling immunoassay through platelet membrane/Au nanoparticle/delaminated V2C nanosheet (PM/AuNPs/d-V2C)-modified electrode as the substrate of sensing interface and methylene blue/aminated metal organic framework (MB@NH2-Fe-MOF-Zn) as an electrochemical signal probe. The biosensor perfectly integrates the high conductivity of AuNPs-loaded V2C MXene with the excellent loading property of NH2-Fe-MOF-Zn to improve the electrochemical sensing performance. In addition, the excellent antifouling properties of the homogeneous cell membrane can effectively prevent the non-specific adsorption of model proteins. The obtained antifouling biosensor possesses the capability of ultrasensitive detection of CD44 and CD44-positive cancer cell in complex liquids and exhibits good analytical performance for the analysis of CD44 with a linear range from 0.5 ng/mL to 500 ng/mL. This strategy of developing cell membrane-based biosensing systems with enhanced antifouling capability can be easily expanded to the construction of other complex biosensors, and the advanced biological probes and analytical methods provide a favorable means to accurately quantify biomarkers associated with tumor progression.
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Journal of Materials Chemistry C
·
2019
·Vol. 8
·期 5
·1788-1795
·
IF 6.641
Xiaoxuan Wu,Hui Liao,Di Ma,Mingyuan Chao,Yonggang Wang,Xiaolong Jia,Pengbo Wan,Liqun Zhang
Flexible wearable conductive hydrogel-based epidermal sensors have attracted tremendous attention due to their versatile potential applications in soft robotics, personal healthcare monitoring and electronic skins. However, it remains a critical challenge for hydrogel-based epidermal sensors to simultaneously achieve self-healing capability, self-adhesiveness and long-lasting moisture retention for full-scale human motion biomonitoring. Herein, a conductive, self-healing, adhesive and long-lastingly moist MXene nanocomposite organohydrogel is prepared from the conformal coating of the MXene nanosheet network by the polymer networks of dopamine grafted sodium alginate (Alg-DA), phenylboronic acid grafted sodium alginate (Alg-PBA) and polyacrylamide (PAAm) with a glycerol/water binary solvent as the dispersion medium. The obtained MXene nanocomposite organohydrogel exhibits excellent self-healing capability, superior self-adhesive performance and long-lasting moisture retention (10 days). Furthermore, the MXene nanocomposite organohydrogel can be assembled as a wearable epidermal sensor to detect human motion including large deformation (finger bending and wrist bending) and tiny deformation (swallowing, breathing, and pulse) with durable stability. Meanwhile, the assembled epidermal sensor could be employed to monitor human activities wirelessly via connecting a wireless transmitter. This work sheds new light on the development of flexible, self-healing, adhesive and long-lastingly moist epidermal sensors and electronic skins for personalized healthcare monitoring, human–machine interfaces, and artificial intelligence.
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