ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xin-Xin Dong,Yuan-Ming Cao,Cheng Wang,Bin Wu,Mi Zheng,Yang-Biao Xue,Wei Li,Bin Han,Min Zheng,Zuo-Shan Wang,Ming-Peng Zhuo
Multifunctional and long-term stable wearable heating systems have attracted extensive attention from experts, yet smart textiles that only rely on harvesting the body’s heat without additional energy still face huge challenges in practical applications. Herein, we rationally prepared the monolayer MXene Ti3C2Tx nanosheets via an in situ hydrofluoric acid generation method, which was further employed to construct a wearable heating system of MXene @ polyester polyurethane blend fabrics (MP textile) for the passive personal thermal management through a simple spraying process. Owing to the unique two-dimensional (2D) structure, the MP textile presents the desired mid-infrared emissivity, which could efficiently suppress the thermal radiation loss from the human body. Notably, the MP textile with an MXene concentration of 28 mg/mL exhibits a low mid-infrared emissivity of 19.53% at 7–14 μm. Significantly, these prepared MP textiles demonstrate an enhanced temperature of more than 6.83 °C compared with those of favorably traditional fabrics, involving the black polyester fabric, pristine polyester polyurethane blend fabric (PU/PET), and cotton, suggesting a charming indoor passive radiative heating performance. The temperature of real human skin covered by MP textile is 2.68 °C higher than that covered by cotton fabric. Impressively, these prepared MP textiles simultaneously possess attractive breathability, moisture permeability, mechanical strength, and washability, which provide new insight into human body temperature regulation and physical health.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2019
·Vol. 103
·期 2
·849-858
·
IF 3.094
Fang Xu,Dainan Zhang,Yulong Liao,Gang Wang,Xiaolei Shi,Huaiwu Zhang,Quanjun Xiang
Plasma processing technology, as a promising method to enhance photocatalytic activity of catalyst, is gradually attracting extensive interest from researchers. However, the main mechanism of plasma-treated photocatalyst on hydrogen production is not clear. In this work, 2D Ti 3 C 2 T x MXene is selected as a co-catalyst of graphitic carbon nitride (g-C 3 N 4 ), which carries out a plasma treatment (500°C) under N 2 /H 2 atmosphere. Due to plasma treatment, there is a higher proportion Ti–O functional groups on surface of layered Ti 3 C 2 T x MXene, especially for Ti 4+ . The obtained g-C 3 N 4 /p-Ti 3 C 2 T x photocatalyst with sandwich-like structure shows an enhanced photocatalytic activity. The rate of hydrogen generation of CN/pTC3.0 sample without Pt co-catalyst is 25.4 and 2.4 times that of pure g-C 3 N 4 and CN/TC3.0 samples, respectively. The improved photocatalytic activity is attributed to presence of Ti 4+ due to plasma treatment, which can capture photo-induced electron from g-C 3 N 4 and improve the separation of electrons and holes after visible light irradiation. The cyclic hydrogen production of the photocatalyst demonstrates good photocatalytic stability. In addition, this method of plasma treatment under N 2 /H 2 atmosphere is feasible to develop a high-performance co-catalyst, which can be extended to other photocatalysts with two-dimensional structure for photocatalytic water-splitting applications.
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高影响因子
ACS Applied Nano Materials
·
2019
·
IF 0
Lu Liu,Guobing Ying,Cong Hu,Kaicheng Zhang,Fengchen Ma,Lin Su,Chen Zhang,Cheng Wang
MXene is a two-dimensional transition metal carbide or carbonitride with graphene-like 2D morphology and high surface activity, which are useful features in energy storage, catalysis, and adsorption. However, only a handful of structural applications have so far been reported. In this study, functionalization of a carbon fiber (CF) was achieved by MXene (Ti3C2) to improve the CF surface wettability. The results showed that functionalization of MXene not only changed the CF surface topography and increased the mechanical engagement effect during debonding but also enhanced the surface activity of carbon fibers. The interfacial shear strength increased by 186% when compared with nonfunctionalized specimens. A possible interfacial enhancement mechanism was proposed to provide a future roadmap for surface modification of carbon fibers.
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ADVANCED FUNCTIONAL MATERIALS
·
2019
·Vol. 29
·期 46
·1905694
·
IF 15.621
Lin Yang,Chunxiang Dall'Agnese,Yohan Dall'Agnese,Gang Chen,Yu Gao,Yoshitaka Sanehira,Ajay Kumar Jena,Xiao-Feng Wang,Yury Gogotsi,Tsutomu Miyasaka
MXenes are a large and rapidly expanding family of 2D materials that, owing to their unique optoelectronic properties and tunable surface termination, find a wide range of applications including energy storage and energy conversion. In this work, Ti 3 C 2 T x MXene nanosheets are applied as a novel type of electron transport layer (ETL) in low-temperature processed planar-structured perovskite solar cells (PSCs). Interestingly, simple UV-ozone treatment of the metallic Ti 3 C 2 T x that increases the surface Ti O bonds without any change in its bulk properties such as high electron mobility improves its suitability as an ETL. Improved electron transfer and suppressed recombination at the ETL/perovskite interface results in augmentation of the power conversion efficiency (PCE) from 5.00% in the case of Ti 3 C 2 T x without UV-ozone treatment to the champion PCE of 17.17%, achieved using the Ti 3 C 2 T x film after 30 min of UV-ozone treatment. As the first report on the use of pure MXene layer as an ETL in PSCs, this work shows the great potential of MXenes to be used in PSCs and displays their promise for applications in photovoltaic technology in general.
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POLYMER COMPOSITES
·
2019
·Vol. 41
·期 1
·210-218
·
IF 2.268
Ying Pan,Li Fu,Qingwei Zhou,Zhenan Wen,Cheng-Te Lin,Jinhong Yu,Weiming Wang,Hongting Zhao
Herein, Ti 3 C 2 T x (MXene) was synthesized and mixed with polyvinyl alcohol (PVA) to fabricate PVA/MXene nanocomposites. The results confirmed that delaminated MXene was successfully synthesized. The nanocomposites were obtained via casting/evaporation method. The thermal stability was evaluated by thermogravimetric analysis (TGA). For the PVA composites with content of 2 wt% MXene (PVA-MXene2), the thermal decomposition was retarded by approximately 20°C when the temperature was lower than 350°C compared with that of pure PVA. Moreover, the evolved gas products of the PVA/MXene composite were lower than those of pure PVA. For the first time, the flame retardancy of PVA/MXene nanocomposite was investigated using a microscale combustion calorimeter. The peak heat release rate (PHRR) and total heat release of the PVA composite were reduced by 25.7% and 25.5%, respectively, with 1 wt% of MXene. The temperatures at PHRR of PVA/MXene composites were improved with the addition of MXene. Moreover, the addition of MXene resulted in PVA composites with a higher tensile strength and elongation at break than those of a pure PVA film. The improvements in the flame retardancy, thermal and mechanical properties of PVA/MXene composites should enable a wide range of potential applications of MXenes in polymer matrices.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2019
·
IF 6.309
Jia-Qi Luo,Sai Zhao,Hao-Bin Zhang,Zhiming Deng,Lulu Li,Zhong-Zhen Yu
The rapid popularity of portable and wearable electronics requires high-performance flexible electromagnetic interference (EMI) shielding materials to cope with increasingly severe electromagnetic wave pollution problems. To combine outstanding EMI shielding performance and excellent mechanical flexibility, we demonstrate an efficient vacuum-assisted filtration approach for the fabrication of flexible and highly conductive Ti 3 C 2 T x MXene/natural rubber (NR) nanocomposite films by constructing interconnected MXene networks in NR matrix. The electrostatic repulsion forces originated from the negative charges of MXene and NR latex enable the MXene sheets to selectively distribute at the interfaces of the NR particles, forming an interconnected network for efficient electron transport and load transfer at low MXene contents. The resultant nanocomposite with 6.71 vol% of MXene shows a superb electrical conductivity of 1400 S m −1 and an outstanding EMI shielding performance of 53.6 dB. Furthermore, the robust and three-dimensional MXene network provides significant reinforcement to the NR matrix, exhibiting obviously enhanced tensile strength and modulus by 700% and 15000% as compared to those of neat NR, respectively. The stable EMI shielding capability and stretchability under cyclic deformations make the high-performance MXene/NR nanocomposite films promise in next-generation flexible and foldable electronics.
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高影响因子
Advanced Electronic Materials
·
2019
·Vol. 5
·期 12
·1900537
·
IF 6.312
Qiang Wang,Siliang Wang,Xiaohui Guo,Limin Ruan,Ning Wei,Yue Ma,Jiayi Li,Min Wang,Wanqing Li,Wei Zeng
Although current energy storage devices are limited by their own shortcomings, their merits such as superior power density and cycling stability for supercapacitors (SCs), and high energy density for batteries cannot be ignored either. Constructing hybrid SCs (HSCs) with capacitor-type electrodes and battery-type electrodes can combine the advantages of SCs and batteries. Herein, a zinc-ion HSC (ZHSC) is fabricated with a porous 3D MXene (Ti 3 C 2 T x )-reduced graphene oxide aerogel cathode and zinc foil anode for the first time. As a result, the ZHSC exhibits excellent electrochemical performance with a high specific capacitance of 128.6 F g −1 at a current density of 0.4 A g −1 and a high energy density of 34.9 Wh kg −1 at a power density of 279.9 W kg −1 . More importantly, after 75 000 charge and discharge cycles at a current density of 5 A g −1 , the capacitance retention is still above 95% of the initial capacitance. This work provides a new way of thinking for developing high-performance energy storage devices with superior energy, power density, and ultralong cycle life.
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高影响因子
RSC Advances
·
2017
·Vol. 7
·期 89
·56204-56210
·
IF 3.108
Runlin Han,Xufeng Ma,Yongli Xie,Da Teng,Shouhai Zhang
MXene, a new 2D transition metal carbide-based material, possesses excellent electrical conductivity and hydrophilicity. In this study, Ti3C2Tx (where T represents a functional group (O, OH, and/or F)) was produced by etching and ultrasonicating Ti3AlC2. Then, it was used to prepare the MXene composite membrane via a simple filtration method performed at 0.2 MPa on a polyethersulfone (PES) ultrafiltration membrane. The MXene composite membrane shows excellent flux (115 L m−2 h−1) and favorable rejection to Congo red dye (92.3% at 0.1 MPa). The membrane demonstrated rejection to inorganic salts below 23% with flux above 432 L m−2 h−1 at 0.1 MPa. Due to its loose lamellar structure, the composite membrane is able to demonstrate efficient permselectivity in the separation of dyes from salts. Furthermore, the composite membrane shows excellent hydrophilicity and flux because of the lamellar hydrophilic MXene.
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高影响因子
Nature Communications
·
2017
·Vol. 8
·期 1
·1-8
·
IF 12.124
Ma Yanan,Liu Nishuang,Li Luying,Hu Xiaokang,Zou Zhengguang,Wang Jianbo,Luo Shijun,Gao Yihua
Since the successful synthesis of the first MXenes, application developments of this new family of two-dimensional materials on energy storage, electromagnetic interference shielding, transparent conductive electrodes and field-effect transistors, and other applications have been widely reported. However, no one has found or used the basic characteristics of greatly changed interlayer distances of MXene under an external pressure for a real application. Here we report a highly flexible and sensitive piezoresistive sensor based on this essential characteristics. An in situ transmission electron microscopy study directly illustrates the characteristics of greatly changed interlayer distances under an external pressure, supplying the basic working mechanism for the piezoresistive sensor. The resultant device also shows high sensitivity (Gauge Factor ~ 180.1), fast response (<30 ms) and extraordinarily reversible compressibility. The MXene-based piezoresistive sensor can detect human being’s subtle bending-release activities and other weak pressure.
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高影响因子
BIOMATERIALS
·
2024
·
IF 12.8
Huan Wang,Xinchen Liu,Xiangyu Yan,Yong Du,Fang Pu,Jinsong Ren,Xiaogang Qu
Anticancer nanomedicines used for ferroptosis therapy generally rely on the direct delivery of Fenton catalysts to drive lipid peroxidation in cancer cells. However, the therapeutic efficacy is limited by the ferroptosis resistance caused by the intracellular anti-ferroptotic signals. Herein, we report the intrinsic ATPase-mimicking activity of a vanadium carbide MXene nanozyme (PVCMs) to pharmacologically modulate the nuclear factor erythroid 2-related factor 2 (Nrf2) program, which is the master anti-ferroptotic mediator in the ironclad defense system in triple-negative breast cancer (TNBC) cells. The PVCMs perform high ATPase-like activity that can effectively and selectively catalyze the dephosphorylation of ATP to generate ADP. Through a cascade mechanism initiated by falling energy status, PVCMs can powerfully hinder the Nrf2 program to selectively drive ferroptosis in TNBC cells in response to PVCMs-induced glutathione depletion. This study provides a paradigm for the use of pharmacologically active nanozymes to moderate specific cellular signals and elicit desirable pharmacological activities for therapeutic applications.
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高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Zebin Zheng,Xu Yang,Lin Lv,Zhaoqing Xia,Yukai He,Xunying Wang,Wenjing Dong,Hanbin Wang,Guokun Ma,Houzhao Wan,Hao Wang
Application of two-dimensional MXenes (Ti 3 C 2 T x )-based memristors in neuromorphic computing is restricted due to the unsatisfied power consumption, consistency and tolerance, and the indistinct resistive switching mechanism. Herein, an elaborately designed Al/Ti 3 C 2 T x /SnO 2 /ITO memristor to alleviate the above issues, and the device exhibits a boosted switching ratio of about 10 3 , excellent durability over 500 cycles, and a switching voltage of <0.6 V, and shows good retention characteristics. Theoretical analysis manifests that the insertion of the SnO 2 layer promotes the formation and rupture of conductive filaments as the optimized local electric field and the concentration gradient of oxyanions tremendously favors oriented ionic migration and reduces the transition voltage. This work not only provides a feasible and effective way to enhance the memristive performance of two-dimensional materials but also further demonstrates the advantages of two-dimensional materials in neural network computing architectures.
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JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Xu Yin,Jiatian Yu,Zhifeng Gao,Wei Li,Kajia Wei,Yun Jiang,Yonghao Zhang,Haoming Chen,Weiqing Han
Bromate (BrO 3 – ) is a common by-product of advanced oxidation water treatment processes. In this study, a catalyst combining MXene and Pd was synthesized to eliminate BrO 3 – by electrochemical reduction in flow-through mode. The fabricated Ti/Pd@MXene filter showed superior activity for BrO 3 – reduction compared with Ti/MXene filter. A satisfactory BrO 3 − removal performance by Ti/Pd@MXene filter was obtained at pH values of 5–7 with a current density of 1.0–2.5 mA·cm –2 . The mechanism explored by quenching experiments and EPR analysis demonstrated that atomic hydrogen (H*)-mediated reduction was dominant in the Ti/Pd@MXene filter system and contributed to 84.2 % of the BrO 3 − removal, which was greater than that of Ti (7.1 %) and Ti/MXene (43.9 %). DFT calculations revealed the introduction of Pd nanoparticles on MXene lowered the energy barrier for generating H* from OH* -H* , thus boosting H* formation. Furthermore, the Ti/Pd@MXene filter had favorable stability and applicability, and nearly 90 % of BrO 3 − could be eliminated in different water matrices. Moreover, energy consumption of the Ti/Pd@MXene filter was more competitive than that previously reported (0.348 kWh·mmol −1 ), especially for high BrO 3 − removal (≥75 %). This work highlighted an effective flow-through electrocatalytic filter to induce H* -mediated electrochemical reduction of BrO 3 − .
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高影响因子
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