ACS Applied Nano Materials
·
2025
·
IF 5.5
Lu Tang,Kechen Zhou,Huiyu Su,Jiahong Tang,Qirui Wu,Lingfei Luo,Xiang Guo,Dawen Zeng
Detecting nitrogen dioxide (NO2) at room temperature (RT) is crucial for advancing environmental monitoring technologies, enabling efficient and practical air quality assessment. Two-dimensional (2D) MXene nanomaterials, recognized for their large specific surface area (SSA), abundant functional groups, and tunable electrical properties, have attracted considerable attention as promising candidates for room temperature gas-sensing applications. However, despite their potential, challenges, such as low gas adsorption efficiency, limited sensitivity, and poor selectivity, hinder their broader application and development, highlighting the need for further research. Here, we introduce a zero-dimensional (0D)/2D heterojunction gas-sensitive structure by synthesizing SnS2 quantum dot (QD)-sensitized Ti3C2Tx MXene nanocomposites via a hydrothermal method. The carefully designed gas sensor exhibits a significantly enhanced response value (RV) of 5.83% for 10 ppm of NO2 and a low detection limit of 500 ppb at RT, achieving an RV that is 5.8 times higher than that of pure Ti3C2Tx. Additionally, the sensor demonstrates high sensitivity (0.76 ppm–1 in the 0.5–5 ppm range), excellent selectivity, and outstanding stability, with a performance degradation of only 3.2% over 4 weeks. The exceptional performance arises from the synergistic effects of the quantum confinement properties of SnS2 QDs and the superior conductivity of Ti3C2Tx, which together provide abundant active sites for gas adsorption and facilitate efficient charge transfer pathways. Furthermore, the formation of the heterojunction modulates the resistance, enhancing room temperature sensing capabilities. The synthesized nanomaterials offer significant potential for advancing the design of heterostructures that integrate 0D QDs with 2D nanomaterials, paving the way for highly efficient NO2 detection at RT. Moreover, maintaining an optimal operating temperature further enhances the accuracy and reliability of real-time NO2 monitoring systems.
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DOI
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 16
·165603
·
IF 3.953
Yongqin Hu,Chen Hou,Yuxia Shi,Jiamei Wu,Da Yang,Zhuili Huang,Yan Wang,Yufei Liu
Electromagnetic pollution seriously affects the human reproductive system, cardiovascular system, people's visual system, and so on. A novel versatile stretchable and biocompatible electromagnetic interference (EMI) shielding film has been developed, which could effectively attenuate electromagnetic radiation. The EMI shielding film was fabricated with a convenient solution casting and steam annealing with 2D MXene, iron oxide nanoparticles, and soluble polyurethane. The EMI shielding effectiveness is about 30.63 dB at 8.2 GHz, based on its discretized interfacial scattering and high energy conversion efficiency. Meanwhile, the excellent tensile elongation is 30.5%, because of the sliding migration and gradient structure of the nanomaterials doped in a polymer matrix. In addition, the film also demonstrated wonderful biocompatibility and did not cause erythema and discomfort even after being attached to the arm skin over 12 h, which shows the great potential for attenuation of electromagnetic irradiation and protection of human health.
研究领域:
材料科学
·
生物医学工程
·
电磁学
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高影响因子
PLASMA SCIENCE & TECHNOLOGY
·
2021
·Vol. 23
·期 11
·115403
·
IF 1.567
Weisheng CUI,Qiaolu LIN,Hongbo LI,Shuai ZHAO,Yunge ZHANG,Yifan HUANG,Shuting FAN,Yiling SUN,Zhengfang QIAN,Renheng WANG
The formation of homogeneous dielectric barrier discharge (DBD) in air is a key scientific problem and core technical problem to be solved for the application of plasmas. Here, we report the effect of two-dimensional (2D) nanomaterial Ti3C2Tx (Tx = –F, –O and/or –OH) on regulating the electrical discharge characteristics. The field emission and weak bound state property of Ti3C2Tx can effectively increase the seed electrons and contribute to the generation of atmospheric pressure homogeneous air DBD. The electron avalanche development for the uneven electrode structure is calculated, and the discharge mode transition is modeled. The comparative analyses of discharge phenomena validate the regulation of Ti3C2Tx on the discharge characteristics of DBD. The light emission capture and the voltage and current waveforms verify that the transition of Townsend discharge to streamer discharge is effectively inhibited. The optical emission spectra are used to characterize the plasma and confirm that it is in a non-equilibrium state and the gas temperature is at room temperature. This is the first exploration of Ti3C2Tx on the regulation of electrical discharge characteristics as far as we know. This work proves the feasibility of Ti3C2Tx as a source of seed electrons to form homogeneous DBD, establishing a preliminary foundation for promoting the application of atmospheric pressure non-equilibrium plasma.
研究领域:
物理学
·
材料科学
·
等离子体科学
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高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 26
·265501
·
IF 3.874
Shuxian Chen,Min Shi,Quan Xu,Jingkun Xu,Xuemin Duan,Yansha Gao,Limin Lu,Feng Gao,Xiaoqiang Wang,Yongfang Yu
Herein, Ti3C2Tx MXene/N-doped reduced graphene oxide (MXene/N-rGO) composite was employed as the electrocatalyst to construct a new electrochemical sensing platform for the determination of adrenaline (AD). The MXene/N-rGO was synthesized via a facile one-step hydrothermal method, where ethylenediamine acted as a reducing agent and N source. The doped N in rGO served as a bridge between MXene and rGO through tight hydrogen bonds. Scanning electron microscopy showed that large numbers of MXenes with accordion-like morphology were distributed on the surface of the N-rGO. The MXene/N-rGO composite displayed a synergetic catalytic effect for oxidizing AD, originating from the unique catalytic activity of N-rGO and the large surface area and satisfactory conductivity of MXene. These characteristics of composite material led to a remarkable effect on signal amplification for the detection of AD, with a wide linear range from 10.0 nM to 90.0 μM and a low detection limit of 3.0 nM based on a signal to noise ratio of 3. Moreover, the MXene/N-rGO electrode displayed good stability, repeatability, and reproducibility. Additionally, the proposed sensor was successfully applied for voltammetric sensing of AD in urine with recoveries from 97.75% to 103.0%.
研究领域:
材料科学
·
分析化学
·
生物医学工程
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DOI
PubMed
高影响因子
ACS Nano
·
2021
·
IF 15.881
Yunyi Zhu,Ji Liu,Tong Guo,Jing Jing Wang,Xiuzhi Tang,Valeria Nicolosi
The fast development of terahertz technologies demands high-performance electromagnetic interference (EMI) shielding materials to create safe electromagnetic environments. Despite tremendous breakthroughs in achieving superb shielding efficiency (SE), conventional shielding materials have high reflectivity and cannot be re-edited or recycled once formed, resulting in detrimental secondary electromagnetic pollution and poor adaptability. Herein, a hydrogel-type shielding material incorporating MXene and poly(acrylic acid) is fabricated through a biomineralization-inspired assembly route. The composite hydrogel exhibits excellent stretchability and recyclability, favorable shape adaptability and adhesiveness, and fast self-healing capability, demonstrating great application flexibility and reliability. More interestingly, the shielding performance of the hydrogel shows absorption-dominated feature due to the combination of the porous structure, moderate conductivity, and internal water-rich environment. High EMI SE of 45.3 dB and broad effective absorption bandwidth (0.2–2.0 THz) with excellent refection loss of 23.2 dB can be simultaneously achieved in an extremely thin hydrogel (0.13 mm). Furthermore, such hydrogel demonstrates sensitive deformation responses and can be used as an on-skin sensor. This work provides not only an alternative strategy for designing next-generation EMI shielding material but also a highly efficient and convenient method for fabricating MXene composite on macroscopic scales.
研究领域:
材料科学
·
电子工程
·
纳米技术
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DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Xuefeng Sha,Shiru Wu,Peng Gao,Zixing Wang,Fan Zeng,Wang Zhou,Xueli Wu,Minghao Yu,Jiaxu Yan,Xianyin Song,Jilei Liu,Changzhong Jiang
The self-discharge phenomenon remains a fundamental challenge that limits the practical deployment of advanced supercapacitors, particularly in MXene-based systems where the interfacial ion-electron coupling dominates charge redistribution dynamics. Here, a surface terminal engineering strategy was proposed by utilizing 1,2-bis(triethoxysilyl)ethane (BTSE) to construct a surface passivation layer through hydrogen-bond-mediated assembly. Benefiting from the generated tension effect between BTSE and MXene, it directly results the weakened hybridization effect between Ti atoms and surface terminal atoms, together with an upward shift of the d -band center and reduce of reaction energy barriers. Collectively, the passivation of surface Ti–O terminals promotes the electron transfer kinetics (Ti–O + e − + H + → Ti-OH) and inhibits the dissociation of Ti-OH terminal from the perspective of electron transfer coupling. As a result, the optimized MXene@BTSE electrode has effectively reduced the Ti–OH dissociation rates by 2.23-fold and demonstrates a remarkable self-discharge suppression, achieving 55.16% decrease of self-discharge rate in 1 m H 2 SO 4 electrolyte, compared to the pristine MXene. Moreover, the modified MXene electrode shows around 92.43 % capacitance retention over 80 000 cycles, demonstrating excellent stability. This work establishes an electron-structure-property paradigm for interfacial design in electrochemical energy storage systems.
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高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2024
·
IF 8
Yuxuan Zhang,Jun Luo,Xiuyan Wang,Dunhan Zhang,Hongxia Xu,Yuanyuan Sun,Xueyuan Gu,Xin Hu,Bin Gao,Hongqiang Ren
MXenes, such as Ti 3 C 2 T x , demonstrate tremendous potential as heavy metal adsorbents due to their abundant reaction sites, high hydrophilicity , controllable interlayer spacing, and inherent reduction ability. However, their structural dependent pollutant removal performances and the related mechanisms are far less studied. Therefore, the removing abilities of Cr(VI) from water on Ti 3 C 2 T x MXenes with different structures (multilayer (ML-) and delaminated (DL-) Ti 3 C 2 T x ) synthesized via several etching techniques were evaluated. Focusing on the most effective ML- and DL-Ti 3 C 2 T x obtained by acid/fluoride salt etching, the impacts of structural variations on the Cr(VI) removal performances were explored. Both ML- and DL-Ti 3 C 2 T x demonstrate outstanding Cr(VI) adsorption and reduction capabilities, achieving equilibrium within 500 min with capacities of 92.7 and 205 mg/g, respectively. The differences in removal mechanisms stemed from the varying adsorption and reduction capacities of two MXenes. ML-Ti 3 C 2 T x , with lower surface area and porosity, had low adsorption capacity but superior reduction ability, efficiently converting most Cr(VI) to Cr(III) (66.8%). Conversely, DL-Ti 3 C 2 T x exhibited better removal efficiency but a lower capacity for reduction (45.7%). Notably, although the partial reduction of DL-Ti 3 C 2 T x to TiO 2 results in its limited chemical reduction capacity, Ti 3 C 2 T x might serve as a co-catalyst for TiO 2 , boosting the photoresponsiveness of DL-Ti 3 C 2 T x or TiO 2 through Ti 3 C 2 T x /TiO 2 heterojunctions , thereby facilitating photocatalysis to realize the reduction of Cr(VI). Both Ti 3 C 2 T x exhibited both excellent Cr(VI) removal capacity and detoxification capacity, demonstrating their high potential in treating heavy metal pollutants in wastewater.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
·
水处理
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DOI
高影响因子
ACS Nano
·
2020
·
IF 14.588
Zehui Lin,Ji Liu,Wei Peng,Yunyi Zhu,Yang Zhao,Kang Jiang,Ming Peng,Yongwen Tan
Terahertz technology promises broad applications, which calls for terahertz electromagnetic interference (EMI) shielding materials to alleviate radiation pollution. 2D transition metal carbides and/or nitrides (MXenes) with metallic conductivity are promising for EMI shielding, but simultaneously realizing light weight, high stability, and foldability in a MXene shielding material to meet the requirements of increasingly popular portable and wearable equipment has remained a great challenge. Herein, an ion-diffusion-induced gelation method is demonstrated to synthesize free-standing, light-weight, foldable, and highly stable MXene foams, in which MXene sheets are cross-linked by multivalent metal ions and graphene oxide to form an oriented porous structure. The method is highly efficient, controllable, and versatile for scalable generation of functional 3D MXene structures with arbitrary shapes and synergistic properties. The distinctive cross-linked porous structure endows the light-weight MXene foam with good foldability, outstanding durability and stability in wet environments, and an excellent terahertz shielding effectiveness of 51 dB at a small thickness of 85 μm. This work not only provides an insight for the on-target design of high-performance terahertz shielding materials but also expands the applications of MXenes in 3D macroscopic form.
研究领域:
材料科学
·
纳米技术
·
电磁屏蔽
·
太赫兹技术
·
柔性电子学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yushun Zhao,Cheng Yan,Tianqi Hou,Hongli Dou,Hao Shen
Although advances in industrial products have brought convenience to our lives, severe weather has increased the safety risks to industrial facilities. Considerable efforts have been made to develop high-performance superhydrophobic anti-icing coatings. Nevertheless, designing a functional coating with both anti-icing properties and self-deicing remains a major challenge. Here, we propose a design strategy to exploit a photothermal superhydrophobic multifunctional coating with excellent anti-icing and deicing properties based on MXene by high-temperature sintering and layer-by-layer coating. Specifically, poly(tetrafluoroethylene) (PTFE) particles provide low surface energy and binding effects. Room-temperature-vulcanized silicone rubber (RTV) enhances the dispersion of the composite particles and the adhesion of the functional coating to a glass substrate. Furthermore, the functional coatings constructed with MXene exhibit outstanding photothermal effects, imparting excellent superhydrophobicity (CA = 160.18°, SA = 1.8°) and efficient photothermal conversion (equilibrium temperature of 109.3 °C). An anti-icing/deicing test is simulated to confirm their efficient anti-icing/deicing performance in practical applications. Overall, the functional coatings designed in this work can be applied in real industrial facilities.
研究领域:
材料科学
·
能源工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 21
·1675
·
IF 3.2
Naseer Abou Bakar,Nadeem Muhammad,Younis Adnan,Aziz-ur-Rehman,Rehman Ubaid ur,Ali Tahir,Hussain Shahzad
The rapid advancement of highly integrated and compact electronics has spurred an urgent demand for ultrathin, lightweight, and flexible electromagnetic interference (EMI) shielding materials that combine superior shielding effectiveness (SE) with robust mechanical durability. To address this challenge, we engineered flexible and lightweight composite films composed of MXene nanosheets, 1D silver nanowires (AgNWs), and a conductive PEDOT: PSS polymer via a scalable vacuum-assisted filtration process. The resulted co-continuous segregated structure endows the composite films with exceptional electrical conductivity, mechanical resilience, and outstanding EMI shielding performance. Notably, the ultrathin (0.014 mm) binary MXene/AgNW (1:1) BMA50 composite film achieves an exceptional EMI SE of 65 dB in the X-band (8.2–12.4 GHz), corresponding to a remarkable specific shielding effectiveness (SSE) of 26,784 dB cm 2 g −1 . Furthermore, the ternary composite film TMA10 (0.032 mm) incorporating MXene, AgNWs, and PEDOT: PSS exhibited an EMI SE of 50 dB with improved mechanical strength (120 MPa) compared to the binary composite with an SSE of 6847 dB cm 2 g −1 . All fabricated films exhibit a shielding efficiency greater than 99.99%, making them highly suitable for practical applications. The PEDOT:PSS/Ti 3 C 2 T x –AgNW ternary composite exhibited significantly enhanced mechanical performance compared to the MXene–AgNW binary system, achieving a maximum tensile strength of 120 MPa, a Young’s modulus of approximately 2.8 GPa, and superior toughness, owing to the synergistic reinforcement of the conductive polymer and AgNW-bridged MXene network. The synergistic interaction between AgNWs and MXene within the PEDOT:PSS matrix enhances electrical conductivity and forms a porous yet mechanically robust framework, enabling efficient EMI shielding while maintaining flexibility. This scalable strategy offers a promising route for high-performance flexible EMI shielding materials.
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高影响因子
DESALINATION
·
2025
·
IF 9.8
Junzhi Li,Yanan Li,Haiyu Luo,Lili Tang,Nan Xu,Wenlan Ji,Shihao Zhang,Pei Nian,Yibin Wei
MXene-based membranes have emerged as promising candidates for seawater desalination due to their unique two-dimensional (2D) lamellar structures, excellent hydrophilicity, and tunable interlayer spacing. However, challenges such as poor salt rejection, and structural instability hinder their broader application. Herein, we present novel Ti 3 C 2 T x MXene membranes owing cyclodextrin (CD)-embedded polyester network between their interlayers through trimesoyl chloride (TMC)-induced interfacial crosslinking, which not only promotes the formation of stable cross-links between the layers of the MXene nanosheets but also enhances their desalination performance. Various characterization methods were used to demonstrate the successful preparation of the Ti 3 C 2 T x MXene-based membranes cross-linked with the specific polyester networks. Using the same dosage of CDs, the membranes modified with α-CD, β-CD and γ-CD were comparatively investigated. The membrane embedded with 5 mg of α-CD exhibited the optimal desalination performance with rejection of 93.96 %, 93.00 %, 85.88 % and 76.25 % for MgSO 4 , Na 2 SO 4 , MgCl 2 , and NaCl, respectively, and water permeabilities ranging from 93.00 to 149.06 L·m −2 ·h −1 ·bar −1 . Moreover, the Na + and Mg 2+ transport mechanisms within the prepared membrane nano-channels were further investigated by molecular dynamics (MD) simulations. This work offers an innovative approach by introducing CD/TMC interfacial crosslinking to 2D lamellar-structured membranes, providing a high-performance solution for desalination.
研究领域:
材料科学
·
环境工程
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产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2021
·Vol. 7
·期 6
·2101096
·
IF 7.848
Jing-Qi Wang,Peng-Fei Qian,Tian-Jiao Lou,Wenyi Wang,Wen-Hao Geng,Li-Chao Jing,Ze-Long Bao,Tao Wang,Hong-Zhang Geng
The rapid development of the Internet of Things has promoted the application of wearable devices in human's daily life and industrialization. Strain sensors play an indispensable role as a member of wearable devices. Here, a strain film sensor with multi-walled carbon nanotubes (MWCNTs) and Ti 3 C 2 T X MXene, which is obtained by vacuum-assisted filtration and integrated onto a thermoplastic polyurethane substrate, is developed. Since the MWCNTs and Ti 3 C 2 T X MXene composite sensor has a characteristic ‘mud-brick’ microstructure. The sensor has the ability to detect various human movements, such as, bending of finger joints, wrists, elbow joints, and shoulder. The sensors show excellent mechanical property and can be folded more than 2000 times without failure. It also exhibits short response time, low detection limit, and wide range of use. In addition, the sensor shows excellent electrical heating performance. The temperature of the composite film can rise to 96.6 °C in a short period of time even under low voltage power supply (25 V). It likewise proves its excellent performance in terms of cyclability and long-time heating capability. The film has low production cost, easy preparation method, and simple operation. The MWCNT/Ti 3 C 2 T X MXene film can be integrated into wearable devices and shows great potential for future applications.
研究领域:
材料科学
·
电子工程
·
生物医学工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）