JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Zicheng Li,Yingkui Guo,Hongyan Yue,Xin Gao,Shuo Huang,Xiaohua Zhang,Yanfei Yu,Haopeng Zhang,Hengwei Zhang
EP is an important natural catecholamine neurotransmitter in the central nervous system, and the change of EP concentration will lead to many diseases. Therefore, rapid and sensitive detection of EP is of great significance for clinical research. The Ti 3 C 2 T x MXene dispersion obtained by in-situ HF etching Ti 3 AlC 2 was mixed with graphene oxide (GO) dispersion synthesized by the modified Hummers method. After freeze drying and heat-treatment, the reduced graphene oxide/Ti 3 C 2 T x MXene (GMA) was obtained and then the GMA was moved onto indium tin oxide (ITO) as the GMA/ITO working electrode for electrochemical detection of epinephrine (EP). The results are as follows: Ti 3 C 2 T x MXene with a diameter of approximately 150 nm is uniformly distributed on the surface of the 3D graphene. The three-dimensional structure of GMA facilitates the entry of bioactive molecules and increases the contact area. GMA/ITO has a high sensitivity for the determination of EP 3.74 μA·μM −1 ·cm −2 . Moreover, the electrode shows a very low detection limit, well repeatability and stability, and it can detect the EP content in real urine samples.
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
·
IF 17.694
Liu Na,Li Qiaoqiao,Wan Hujie,Chang Libo,Wang Hao,Fang Jianhua,Ding Tianpeng,Wen Qiye,Zhou Liujiang,Xiao Xu
Although Ti 3 C 2 T x MXene is a promising material for many applications such as catalysis, energy storage, electromagnetic interference shielding due to its metallic conductivity and high processability, it’s poor resistance to oxidation at high temperatures makes its application under harsh environments challenging. Here, we report an air-stable Ti 3 C 2 T x based composite with extracted bentonite (EB) nanosheets. In this case, oxygen molecules are shown to be preferentially adsorbed on EB. The saturated adsorption of oxygen on EB further inhibits more oxygen molecules to be adsorbed on the surface of Ti 3 C 2 T x due to the weakened p-d orbital hybridization between adsorbed O 2 and Ti 3 C 2 T x , which is induced by the Ti 3 C 2 T x /EB interface coupling. As a result, the composite is capable of tolerating high annealing temperatures (above 400 °C for several hours) both in air or humid environment, indicating highly improved antioxidation properties in harsh condition. The above finding is shown to be independent on the termination ratio of Ti 3 C 2 T x obtained through different synthesis routes. Utilized as terahertz shielding materials, the composite retains its shielding ability after high-temperature treatment even up to 600 °C, while pristine Ti 3 C 2 T x is completely oxidized with no terahertz shielding ability. Joule heating and thermal cycling performance are also demonstrated.
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PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Jingdi Shang,Libo Wang,Ying Gao,Ji’a Yang,Qixun Xia,Qianku Hu,Aiguo Zhou,Bo Wang
Due to its unique structure and performance, Ti 3 C 2 T x has been widely investigated as an electrode material for flexible energy storage devices using hydrogel as a solid electrolyte. The composition and structure of hydrogels determine their poor performance at high temperatures and there is little research on MXene flexible devices at high temperature. In this work, we designed a method for preparing capacitors with Ti 3 C 2 T x as the electrode material and ionic liquid as the electrolyte. By leveraging the high permeability of ionic polymer solution, a seamless electrode-electrolyte interface is constructed. The device can achieve a maximum capacitance of 173.8 mF cm −2 at a 5 mV s −1 scan rate, with a maximum specific energy density and power density of 96.57 μWh cm −2 and 1.74 mW cm −2 , respectively. The capacitor retains 89.5 % of its initial capacitance after 20,000 cycles, demonstrating excellent cycle stability. Importantly, the supercapacitor can operate at 100 °C with a specific capacitance of 278.66 mF cm −2 . In addition, the designed device can retains 100 % or more of its capacitance even after 1000 cycles of 180° bending，demonstrating robust mechanical performance. This work provides a reference for studying the application of MXene in high-temperature flexible supercapacitor.
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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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高影响因子
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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JOURNAL OF THE ENERGY INSTITUTE
·
2024
·
IF 5.6
Zheng Bo,Mengyu Cao,Yaolin Wang,Jianhua Yan,Kefa Cen,Xin Tu
Plasma catalytic CO 2 hydrogenation has emerged as a promising approach for converting CO 2 into valuable chemicals such as CO, offering a potential solution to mitigate greenhouse gas emissions. In this study, we investigate the synergistic effect between plasma and a Cu/Ti 3 C 2 T x MXene catalyst for CO 2 hydrogenation via the reverse water gas shift (RWGS) reaction in a dielectric barrier discharge (DBD) reactor. Our findings reveal a significant enhancement in CO 2 conversion (33.1%) and CO yield (31.9%) when using the Cu/Ti 3 C 2 T x catalyst compared to plasma alone or with a Ti 3 C 2 T x foam. Plasma treatment creates unsaturated Ti sites on the Ti 3 C 2 T x surface, dramatically improving CO 2 adsorption and activation, while Cu nanoparticles significantly enhances the activation and dissociation of H 2 molecules on the catalyst surface. These surface adsorbed hydrogen species readily hydrogenate adsorbed CO 2 molecules through the Langmuir-Hinshelwood mechanism. Furthermore, these surface hydrogen species can also participate in the conversion of gas-phase CO 2 molecules through the Eley-Rideal pathway. This work sheds light on the synergistic plasma catalytic mechanism and provide insights for optimizing CO 2 hydrogenation processes using MXene catalysts.
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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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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
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
MATERIALS AND STRUCTURES
·
2026
·Vol. 59
·期 2
·120
·
IF 3.9
Wang Riran,Wan Jingku,Zhou Lu,Ye Li,Wang Meng,Sun Zhuohan
The present study has attempted to develop cementitious composites with electromagnetic (EM) absorbing and shielding properties utilising a low dosage of Ti 3 C 2 T X MXene flakes. A polytetrafluoroethylene mould was employed to prepare MXene/cement paste and cement mortar specimens. The microscopic morphology, elemental identity, crystal structure, and chemical functional groups of MXene flakes and MXene/cementitious composites were characterised by a series of microscopic tests. The response behaviour and interaction mechanism of MXene/cement composites with EM fields have been thoroughly investigated from various perspectives, including the evolution of dielectric and permeability parameters, EM wave loss characteristics, EM wave absorption characteristics, and electromagnetic interference (EMI) shielding effectiveness (SE). The findings indicated that mono-layered MXene flakes possessed the capacity to establish a potentially uninterrupted conductive network within cement composites, and to exert an influence on the crystalline phase characteristics of the cement paste during hydration. The MXene has been demonstrated to enhance the dielectric constant and the EM wave loss of cement pastes and mortars. Furthermore, the reflection loss and the impedance matching outcomes demonstrated that both 1.8 wt.% MXene/cement paste and 1.2 wt.% MXene/cement mortar possessed the optimal EM absorbing capability. The total EMI SE has been found to rise with increasing MXene mass ratio for both cement paste and mortar. Generally, MXene/cement composites exhibited EM shielding mechanisms dominated by absorption. This study may provide novel insights and industry theoretical support for the universal application of MXene materials in EM wave absorbing and shielding in the field of lightweight, and high-strength building materials.
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Nanomaterials
·
2023
·Vol. 13
·期 6
·958
·
IF 5.3
Xiaofang Liu,Hongchi Xie,Shi Zhuo,Yuanhong Zhou,Mohamed S. Selim,Xiang Chen,Zhifeng Hao
For a long time, the emergence of microbial drug resistance due to the abuse of antibiotics has greatly reduced the therapeutic effect of many existing antibiotics. This makes the development of new antimicrobial materials urgent. Light-assisted antimicrobial therapy is an alternative to antibiotic therapy due to its high antimicrobial efficiency and non-resistance. Here, we develop a nanocomposite material (Ru@MXene) which is based on Ru(bpy)(dcb)2+connected to MXene nanosheets by ester bonding as a photothermal/photodynamic synergistic antibacterial material. The obtained Ru@MXene nanocomposites exhibit a strengthened antimicrobial capacity compared to Ru or MXene alone, which can be attributed to the higher reactive oxygen species (ROS) yield and the thermal effect. Once exposed to a xenon lamp, Ru@MXene promptly achieved almost 100% bactericidal activity againstEscherichia coli(200 μg/mL) andStaphylococcus aureus(100 μg/mL). This is ascribed to its synergistic photothermal therapy (PTT) and photodynamic therapy (PDT) capabilities. Consequently, the innovative Ru@MXene can be a prospective non-drug antimicrobial therapy that avoids antibiotic resistance in practice. Notably, this high-efficiency PTT/PDT synergistic antimicrobial material by bonding Ru complexes to MXene is the first such reported model. However, the toxic effects of Ru@MXene materials need to be studied to evaluate them for further medical applications.Keywords:MXene;Ru complex;PTT/PDT;antimicrobial
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PubMed
高影响因子
Polymers
·
2023
·Vol. 15
·期 6
·1330
·
IF 5
Kun Hou,Yafeng Yang,Hu Zhou,Xiangmeng Chen,Shengbo Ge
Water pollution has spurred the development of membrane separation technology as a potential means of solving the issue. In contrast to the irregular and asymmetric holes that are easily made during the fabrication of organic polymer membranes, forming regular transport channels is essential. This necessitates the use of large-size, two-dimensional materials that can enhance membrane separation performance. However, some limitations regarding yield are associated with preparing large-sized MXene polymer-based nanosheets, which restrict their large-scale application. Here, we propose a combination of wet etching and cyclic ultrasonic-centrifugal separation to meet the needs of the large-scale production of MXene polymers nanosheets. It was found that the yield of large-sized Ti3C2TxMXene polymers nanosheets reached 71.37%, which was 2.14 times and 1.77 times higher than that prepared with continuous ultrasonication for 10 min and 60 min, respectively. The size of the Ti3C2TxMXene polymers nanosheets was maintained at the micron level with the help of the cyclic ultrasonic-centrifugal separation technology. In addition, certain advantages of water purification were evident due to the possibility of attaining the pure water flux of 36.5 kg m−2h−1bar−1for the Ti3C2TxMXene membrane prepared with cyclic ultrasonic-centrifugal separation. This simple method provided a convenient way for the scale-up production of Ti3C2TxMXene polymers nanosheets.Keywords:Ti3C2TxMXene;yield;polymers nanosheets;cyclic ultrasonic-centrifugal separation
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高影响因子
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