MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Xinqi Zhang,Bingxin Wang,Dawu Shu,Wanxin Li,Fangfang An,yueyong Dong
Dyeing wastewater, a common type of wastewater in the textile industry, has a complex composition, deep color, and poor degradability. In this work, hydrothermal method was employed to synthesize Ni@MXene catalysts, and their performance in the Ni@MXene/PMS (peroxymonosulfate) system was investigated. A mixed system containing 7.5 g/L PMS and 0.2 g/L Ni@MXene was stirred for 60 min at 25 °C and pH 6, achieving a degradation percentage of 93.66%, ‧OH are the primary active species in this catalytic system, and the anion has minimal interference with the degradation process. The degradation percentage of the Ni@MXene catalyst can still reach 88.23 % after 3 times of recycling, and the degraded dyeing wastewater can be used for dyeing cotton fabrics. In conclusion, the catalyst demonstrates exhibits significant potential for dye degradation and wastewater recycling, providing valuable insights for energy conservation and emission reduction.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Ke Wang,Fei-teng Zhao,Sen-miao Zhao,Qi-yue Wang,Xiao-dan Mei,Jing-lan Huang,Hai-zhen Liu,Cun-ke Huang,Jin Guo
Developing efficient hydrogen storage technologies remains a critical challenge for advancing clean hydrogen energy applications. This study addresses the challenges of high dehydrogenation temperature and sluggish dehydrogenation kinetics in NaAlH 4 through the development of TiVC MXene-enhanced composite systems . In this paper, TiVC MXene was prepared by etching TiVAlC with HCl/LiF, and TiVC/NaAlH 4 composite systems were made via milling. The unit cell of NaAlH 4 expanded during milling due to M (M = Ti, V) point defects . The optimal 8 wt% TiVC-doped sample demonstrated remarkable performance: onset dehydrogenation temperature reduced to 90 °C and activation energy decreased by 41% in the 2 nd dehydrogenation step. Notably, the dehydrogenated product achieved 4.1 wt% hydrogenation capacity within 30 min at 120 °C. Structural and mechanistic analyses showed that TiVC decomposed, and its reaction products, such as M defects, Ti–Al alloy and Ti/V oxides , were the real catalysts. They enhanced NaAlH 4 's hydrogen-storage performance by offering active H and smaller Al particles . This work demonstrates the potential of MXene-derived multiphase catalysts for metal hydride storage systems.
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DOI
高影响因子
Catalysts
·
2022
·Vol. 12
·期 6
·599
·
IF 4.501
Yong Li,Mingqing Zhang,Yanfang Liu,Qinghua Zhao,Xin Li,Qianyu Zhou,Yuanfu Chen,Shifeng Wang
Research has demonstrated that the formation of composites of titanium dioxide (TiO2) with silver phosphate (Ag3PO4) through the construction of heterojunctions can expand its light absorption range and suppress the recombination of photogenerated electron–hole pairs, thereby improving the photocatalytic performance. However, this method offers only limited performance improvements, and the composite photocatalysts are costly due to the expensive Ag3PO4. In this study, Ti3C2MXene, which has good hydrophilicity and excellent electrical conductivity, is first used to form Schottky junction composites with bronze TiO2(TiO2(B)) via electrostatic self-assembly. Then, Ag3PO4quantum dots were further formed on the surface of the TiO2(B)/Ti3C2MXene by in situ self-growth, and Ag3PO4formed heterojunctions and Schottky junctions with TiO2(B) and Ti3C2MXene, respectively. Finally, a ternary composite photocatalyst TiO2(B)/Ti3C2MXene/Ag3PO4was jointly constructed by these functional junctions. Under the synergistic effect of these functional junctions, the mobility and fast separation performance of photogenerated electron–hole pairs of the composite photocatalyst were significantly improved, the recombination of photogenerated electron–hole pairs was effectively suppressed, and the light absorption performance was enhanced. As a result, the composite photocatalyst exhibited excellent photocatalytic performances.Keywords:ternary composite photocatalyst;heterojunction;photocatalytic degradation;bronze TiO2;Ti3C2MXene
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Teng-Xuan Cao,Wangwang Ji,Yumei Tan,Hao-Cheng Li,Yi-Lu Zhang,Bin Wang,Zifeng Lin,Rui Xie,Xiao-Jie Ju,Wei Wang,Da-Wei Pan,Zhuang Liu,Liang-Yin Chu
MXene materials have demonstrated great potential for separation applications; however, their intrinsic instability severely limits their practical use. In this work, vermiculite nanosheets are uniformly incorporated into MXene membranes to enhance their long-term stability. This improvement is likely due to the negatively charged environment created by the vermiculite nanosheets, which weakens the polarization of C-Ti bonds in MXene and suppresses its oxidation. Stability tests reveal that MXene remains stable within the MXene/vermiculite membranes after heating at 200 °C in air for 2 h. In contrast, a pure MXene membrane is oxidized under the same conditions. In ion diffusion experiments, the membranes maintain stable transport of monovalent ions such as Cs + for more than ∼1,000 h. The MX-60% membrane exhibits the best separation performance, achieving ideal selectivity ratios of ∼27.8 for Li + /Cs + and ∼39.5 for Li + /Mg 2+ . However, in mixed-ion systems, the separation behavior changes markedly—the Cs + /Li + separation factor reverses to ∼5.2, indicating that Cs + diffuses faster than Li + . This unexpected mixed-salt effect is attributed to ion-ion interactions that disrupt the ordered interlayer water structure, thereby influencing ion transport within the membrane channels. Overall, this work provides an effective strategy to enhance the stability of MXene-based membranes and reveals a notable mixed-ion effect that impacts the ion separation performance of MXene/vermiculite membranes.
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高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 2
·1-9
·
IF 5.479
Zheng Jiushang,Wang Bin,Jin Yanzi,Weng Bo,Chen Jiucun
A novel MXene-based biomimetic enzyme was synthesized using adenosine triphosphate (ATP) as a template to modify a Mn 3 (PO 4 ) 2 nanostructure on Mxene-Ti 3 C 2 nanosheets. The resulting composite was used as an electrode material in an electrochemical sensor for superoxide anion (O 2 •− ). It displays excellent catalytic properties which is attributed to the synergistic effects of the two-dimensional conductive substrate and the Mn 3 (PO 4 ) 2 nanoparticles. The addition of ATP results in the formation of a porous and ordered nanostructure of Mn 3 (PO 4 ) 2 . This facilitates the electron transfer between O 2 •− and electrode. The sensor, best operated at 0.75 V (vs. Ag/AgCl), displays a rapid amperometric response with a detection limit of 0.5 nM and an analytical range that extends from 2.5 nM to 14 μM. Conceivably, it has potential in the detection of O 2 •− released by living cells.
Nanostructured MXenes were synthesized by in-situ growth of Mn 3 (PO 4 ) 2 on Ti 3 C 2 nanosheets under the induction of adenosine triphosphate (ATP). They display enzyme mimickong properties. A sensor fabricated with the composites can be used for the detection of superoxide anions released by HepG2 cells.
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DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2022
·
IF 7.926
Jun Ma,Yuanyuan Wang,Hang Xu,Mingmei Ding,Li Gao
Per- and polyfluoroalkyl substances (PFAS) are a class of ‘forever chemicals’ that have become a global concern owing to their innate chemical stability on humans and water resources. The separation of PFAS from water resources via membrane technologies are facing huge challenge. High permeance and rejection membrane are required for PFAS. To achieve this goal, herein, we propose an MXene-reinforced interfacial polymerization of negatively charged polyamide (PA) membranes for high rejection of short-chain PFAS. The morphologies and chemical properties were systematically investigated for the fabricated membrane. Attributed to the hydrophilic of MXene , the permeance of MXene-PA membranes increased without sacrificing rejection. Density functional theory (DFT) calculations and various experiments elucidated in detail the underlying mechanism of the interactions between the membrane and PFAS. The enhanced electrostatic interaction and hydrogen bonding leaded to increased PFAS rejection and permeance. Therefore, the MXene-regulated PA membrane effectively solved the trade-off between the selectivity and permeability. This work shows that MXene-regulated interfacial polymerization techniques can be used to tailor the effectiveness of PA nanofiltration membranes to overcome the trade-off phenomenon and pave the way for solving the crisis of short-chain PFAS.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2022
·
IF 9.879
Yifei Qu,Xiang Li,Xiu Wang,Hongqi Dai
The electromagnetic interference and heat accumulation pose a significant challenge for the traditional high-density single-function electromagnetic shielding materials in advanced flexible integrated electronics. Herein, nano-silver flakes (AgNFs, reflective layer), MXene (Ti 3 CNTx, loss layer) and silver nanowires (AgNWs, heat conduction and shielding layer) constructed ordered multi heterogeneous layers high-performance flexible electromagnetic shielding functional composites (AMA composites). Especially the composites exhibited outstanding electromagnetic interference shielding efficiency (EMI SE) of 70.96 dB even with an extremely thin coating of 25 g/m 2 , which is 350% higher than that of the commercial standard (20 dB). It is worth noting that the AMA composites also possessed certain qualities such as superior thermal conductivity , flame retardancy, chemical resistance, high-temperature resistance (25 °C–100 °C), and mechanical properties (tensile strength of 44.4 MPa, Young's modulus of 0.6 GPa). The composites display application possibilities in highly integrated advanced flexible electronic products and wearable electronic devices, as well as provide structural design and research ideas for the usage of a new MXene material (Ti 3 CNTx) in electromagnetic shielding composite materials.
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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.
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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.
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高影响因子
JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2022
·Vol. 55
·期 20
·204002
·
IF 3.409
Huajun Xu,Gang Chen,Fei Du,Xin Wang,Yohan Dall’Agnese,Yu Gao
In spite of outstanding theoretical specific capacity (∼3590 mAh g−1), huge volume change during lithiation/delithiation and poor conductivity hinder the practical applications of pure Si anodes for lithium ion batteries (LIBs), requiring conductive additives and porous architectures. In this work, flexible and freestanding composite films made of two-dimensional Ti3C2Tx MXene nanosheets and silicon particles embedded in carbon nanofiber (denoted as Ti3C2Tx-Si@CNF) were prepared via electrospinning and used as LIB anodes. This new electrode design provides a 3D network architecture and high conductivity favorable for good electrochemical performance and long cycle life. Ti3C2Tx-Si@CNF electrodes, containing 28% silicon retained high specific capacity of ∼1580 mAh g−1 after 100 cycles at 0.1 A g−1 and 720 mAh g−1 after 1000 cycles at 1 A g−1, and delivered a great rate performance with 289 mAh g−1 at a current density of 5 A g−1. This is a significantly enhanced performance compared with Si particles embedded in CNF without Ti3C2Tx (denoted Si@CNF). This work proposes a scalable manufacturing strategy for developing high-performance silicon-based anodes, overcoming the low conductivity and volume expansion issues.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Kai Li,Zihang Zhang,Chenxi Sun,Weiguang Han,Mengmeng Zhen,Huiling Liu
Anatase titanium dioxide (TiO 2 ) has garnered significant attention as an anode material for sodium-ion batteries (SIBs) due to its high crystallinity and two-dimensional (2D) diffusion pathways. However, its semiconducting nature results in poor electrical conductivity and sluggish Na⁺ diffusion kinetics. To address these limitations, we propose a novel strategy that integrates the highly exposed TiO 2 (001) facet with Ti 3 C 2 T x MXenes, resulting in the formation of a heterostructure denoted as ((001)T-MX). This heterostructure leverages the strengths of both components to mitigate the shortcomings of TiO 2 alone. The highly exposed TiO 2 (001) facet exhibits a lower Na⁺ insertion energy barrier compared to the TiO 2 (101) facet, thereby facilitating enhanced Na⁺ diffusion along the (001) direction. The incorporation of MXenes not only reduces the band gap energy but also significantly improves the electron conductivity, addressing the inherent conductivity issues of TiO 2 . As an SIB anode, the (001)T-MX delivers a high specific capacity of 121.3 mAh g −1 at 0.5 A g −1 after 500 cycles and exhibits superior cycling stability with a specific capacity of 99.1 mAh g −1 after 1000 cycles at 1.0 A g −1 . This work provides a robust framework for developing advanced heterostructures with tailored crystal faces, paving the way for enhanced energy storage solutions.
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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.
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高影响因子
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