JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Bingbing Fan,Muhammad Tamoor Ansar,Qianqian Chen,Fengchun Wei,Heng Du,Bo Ouyang,Erjun Kan,Yongqiang Chen,Biao Zhao,Rui Zhang
Simple and effective synthesis methods for 2D/2D heterostructure and the synergistic effect of 2D/2D composites on microwave absorbing (MWA) performance remain to be further explored and investigated. Herein, 2D/2D MoS 2 /Ti 3 C 2 T x heterostructure was successfully synthesized in 30 min by a cost-effective and time-saving microwave-assisted hydrothermal method . The 2 H-MoS 2 nanosheets with a thickness of 5–10 nm were homogeneously anchored on the surface of Ti 3 C 2 T x layers, showing a tunable distribution density. Besides, the metallic properties of MoS 2 /Ti 3 C 2 T x and the strong interaction between MoS 2 and Ti 3 C 2 T x , were revealed by DFT calculations, which was employed to further understand the MWA mechanism in terms of molecular dynamics. The MoS 2 /Ti 3 C 2 T x composites with an optimum mass ratio of MoS 2 to Ti 3 C 2 T x (6:1) displayed the best MWA performance. The minimum reflection loss ( RL ) value of −41.5 dB was attained with a layer thickness of only 2.0 mm at 12.2 GHz and a 3.6 GHz maximum efficacious absorption bandwidth. The MWA mechanism of MoS 2 /Ti 3 C 2 T x composites was comprehended from multiple reflections and scattering effects, synergetic effects of conductive losses and attenuation capacity, and polarization relaxations. This work provides a facile method for the synthesis of 2D/2D heterostructure, and also provides a candidate material as potential microwave absorber.
研究领域:
材料科学
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电磁学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 35
·19984-19993
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IF 12.732
Hao Wang,Peng Hu,Jie Zhou,Maarten B. J. Roeffaers,Bo Weng,Yongqing Wang,Hongbing Ji
Ultrathin 2D/2D Ti3C2Tx/semiconductor (CdS and Bi2MoO6) dual-functional photocatalysts have been constructed for the oxidative coupling of benzylamines to imines combined with H2 generation under visible light irradiation (λ ≥420 nm). The optimal 2D/2D Ti3C2Tx/CdS sample exhibits high photocatalytic performance toward H2 evolution (219.7 μmol g−1 h−1) and imine production (155.8 μmol g−1 h−1), which is 5 times and 6 times higher than that of pure CdS, respectively. In situ irradiated XPS and photoelectrochemical characterizations reveal that the enhanced photoactivity over Ti3C2Tx/semiconductor heterostructures can be attributed to the facilitated charge separation from the semiconductors to the Ti3C2Tx cocatalyst. A possible reaction mechanism is proposed based on in situ FTIR spectroscopy of benzylamine adsorption and imine product desorption and reaction intermediate detection using in situ ESR. This work provides a systematic strategy to construct ultrathin 2D/2D Ti3C2Tx/semiconductor heterojunctions for photocatalytic synthesis of high value-added products combined with H2 generation.
研究领域:
材料科学
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化学工程
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环境科学
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DOI
高影响因子
MICROCHIMICA ACTA
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2021
·Vol. 188
·期 11
·1-9
·
IF 5.833
Xia Yixuan,Ma Yuzhi,Wu Yuntao,Yi Yinhui,Lin Huiyu,Zhu Gangbing
A proof-of-principle concept for free-electrodeposited anodic stripping voltammetry (ASV) sensing of Cu 2+ is proposed by using Ti 3 C 2 T x MXene/carbon black (Ti 3 C 2 T x @CB) nanohybrids as electrode materials. Owing to the high adsorption and reduction capability of Ti 3 C 2 T x towards Cu 2+ , Ti 3 C 2 T x MXene enables Cu 2+ to be immobilized and self-reduced directly to form Cu 0 on the Ti 3 C 2 T x @CB electrode surface. As a result an oxidation peak current appears from the re-oxidation of Cu 0 via differential pulse voltammetry. Carbon black (CB) was introduced to prevent Ti 3 C 2 T x Mxene aggregation and improve the related electron transfer as well as enhance their surface area. After optimizing various conditions, a considerable low limit of detection (4.6 nM) and a wide linear range (0.01–15.0 μM) for Cu 2+ were achieved at the working potential from − 0.3 V to 0.0 V (vs SCE). Relative standard deviation (RSD) of eight individual Ti 3 C 2 T x @CB electrodes is 3.72%, and the recoveries from tap water sample and lake water sample were in the ranges of 97.0–108% and 104–107%, respectively. Graphical abstract
研究领域:
分析化学
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材料科学
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环境监测
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Zhichao Li,Xinyu Liu,Xuyun Wang,Hui Wang,Jianwei Ren,Rongfang Wang
Despite the existing advances of Ti 3 C 2 T x MXene as supercapacitor electrode material, its capacitance can be further enhanced through the composite strategy. In this work, the nitrogen-doped superhydrophilic carbon cloth (ENCC) was firstly prepared by N-doping of carbon cloth (CC), and then Ti 3 C 2 T x MXene nanosheets were electrophoretically deposited to yield the binder-free Ti 3 C 2 T x(EPD) /ENCC as supercapacitor electrode material. As a result, the composite electrode exhibited an area-specific capacitance of 2080.1 mF·cm −2 at 1 mA·cm −2 current density. The analysis implied that the varying Ti valence states provided certain psedocapacitance to the capacitance of the as-prepared electrode, though the main contribution was still dominantly from the electric double layer capacitance (EDLC). Further, the assembled symmetric supercapacitor yielded a wide voltage window of 1.8 V, and a good cyclic stability with 91% capacitance retention after 10,000 charge/discharge cycles at 20 mA·cm −2 . Overall, the employed composite strategy enabled the good dispersion of the MXene flakes on the surface of the flexible substrate . Meanwhile, the large number of functional groups (-OH, -F, etc.) on the surface of Ti 3 C 2 T x MXene interacted with the carbon layer through hydrogen bonding effects, which endows it as an ideal electrode for electrochemical capacitors .
研究领域:
材料科学
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电化学
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DOI
高影响因子
Advanced Membranes
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2022
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IF 0
Huan Qin,Haoyu Wu,Shu-Mao Zeng,Fan Yi,Si-Yong Qin,Yue Sun,Li Ding,Haihui Wang
Osmotic energy is a kind of blue energy that has recently been identified as an additional source of clean energy. Using a membrane-based reverse electrodialysis (RED) process, this blue energy can be obtained from acidic industrial wastewater with different proton concentration gradients. However, this process demands high-performance membrane that can withstand harsh environments, possessing the advantages of wide pH tolerance, high-temperature resistance and chemical stability, developing such membranes remain a challenge. Herein, we report a two-dimensional (2D) lamellar Ti 3 C 2 T x MXene membrane-based RED device for osmotic energy capturing from proton gradients. Such a membrane exhibits a typical surface-charge-governed ion transport feature. Moreover, the MXene membrane-based energy harvesting device holds the merits of outstanding pH and temperature resistance. It exhibits an output power density of 6.5 W/m 2 and also demonstrates stability over 200 h at pH = 0, which is 30% higher than the commercialization benchmark (5 W/m 2 ). The osmotic power density can be further enhanced to 11.1 W/m 2 at 330 K, demonstrating excellent thermal and chemical stability. This work can help better understand protons' transport behaviors in MXene membranes and open new avenues for applications in sustainable power conversion and wastewater treatment.
研究领域:
能源科学
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材料科学
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环境工程
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化学工程
✓ 已验证
DOI
ACS Applied Polymer Materials
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2024
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IF 4.4
Yang Han,Xude Qin,Qianqian Kang,Weijie Fan,Dongxiao Han,Yantong Pei,Ye Chen,Wei Wang
Self-healing coating technology is an emerging strategy for extending the longevity of anticorrosion coating. Nevertheless, a significant challenge lies in ensuring that the coating can endure multiple cycles in intricate environments while sustaining a stable mechanical performance. In this study, we prepared a TiO2/Ti3C2Tx/PDMS elastomer coating by incorporating Ti3C2Tx nanosheets to improve mechanical properties and enhance physical barrier performance through photografting. Compared to PDMS without TiO2/Ti3C2Tx, the tensile strength increased from 10.32 to 16.24 MPa. Even after undergoing multiple loading–unloading cycles, the elastomer retained 88.98% of its initial strength, demonstrating remarkable durability and self-healing capabilities. Due to the presence of dynamic disulfide bonds, the coating can undergo a self-healing process within 30 min under 60 °C heating conditions. Furthermore, the presence of TiO2/Ti3C2Tx modified through photografting enhanced hydrophobicity and formed a micro/nanolayered “maze effect” structure, establishing a passive anticorrosion mechanism. This structure demonstrated sustained corrosion resistance for up to 50 days in aggressive environments, effectively preventing the corrosive medium from compromising the metal substrate.
研究领域:
材料科学
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腐蚀与防护
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产品关联
DOI
高影响因子
Surfaces and Interfaces
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2024
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IF 5.7
Yanling Jin,Jiahui Geng,Yilan Wang,Zirui Zhao,Zhengyan Chen,Zhengzheng Guo,Lu Pei,Fang Ren,Zhenfeng Sun,Peng-Gang Ren
As the emerging 2D materials, MXenes have been regarded as promising electrode materials in supercapacitor as power supply for wearable and portable electronic devices due to their metallic conductivity, hydrophilic feature, abundant functional groups, and large theoretical specific surface area etc. The capacity and rate capability of MXene-based electrodes is limited by the sheet restacking, hindering their further development. Herein, Ti 3 C 2 T x MXene/graphene/carbon nanotubes (MXene/graphene/CNTs) flexible film was successfully fabricated by vacuum assisted filtration. Intercalation and confinement of graphene and carbon nanotubes between the Ti 3 C 2 T x MXene nanosheets could increase the spacing and specific surface area, alleviate the stacking of MXene nanosheets, thus enhancing the electrochemical properties. The prepared MXene/graphene/CNTs film possesses increased specific surface area, average pore size, pore volume (112.259 m 2 g −1 , 9.982 nm, 0.276 cm 3 g −1 ), compared to MXene (93.088 m 2 g −1 , 3.786 nm, 0.088 cm 3 g −1 ). Consequently, MXene/graphene/CNTs delivers high area specific capacitance of 1862.5 mF cm −2 at 1 mA cm −2 and excellent rate capability (1525 mF cm −2 , 81.88 % at 20 mA cm −2 ). Flexible asymmetric supercapacitor constructed with MXene/graphene/CNTs film and active carbon as positive and negative electrodes, and PVA/H 2 SO 4 gel as solid electrolyte, achieves an energy density of 133.75 μWh cm −2 at the power density of 750 μW cm −2 . In addition, there is still 94.9 % of the initial performance after cycling 8000 charge/discharge cycles at 10 mA cm −2 , corresponding to a single-turn decay rate down to 0.00019 %. Besides, this flexible supercapacitor manifests outstanding electrochemical stability at different bending times. These advantages make the flexible supercapacitor device very promising for wearable electronics applications.
研究领域:
材料科学
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能源存储
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纳米技术
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Muhammad Irfan Jahanger,Sumair Ahmed Soomro,Maaz Ullah Khan,Yiwang Bao,Man Jiang,Longsheng Chu,Qingguo Feng,Chunfeng Hu
In this work, ultrathin, strong, and highly flexible Ti 3 C 2 T x MXene-PVA (Polyvinyl alcohol) composite films with varying Ti 3 C 2 T x MXene contents of 20, 40, 60, and 80 wt% were prepared via a solution casting method to evaluate their mechanical and electromagnetic interference shielding properties. The Ti 3 C 2 T x MXene-PVA composite films showed optimal mechanical properties with a Ti 3 C 2 T x MXene content of 60 wt%. At this composition, it achieved high tensile strength of 56.0 MPa, high fracture strain of 2.2%, and high Young’s modulus of 6.7 GPa. Additionally, the electromagnetic interference shielding efficiency was improved with increasing Ti 3 C 2 T x MXene content. At the loading of 80 wt% Ti 3 C 2 T x MXene, the electromagnetic interference shielding effectiveness reached the highest value of 34.80 dB.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
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2020
·
IF 4.825
Sheng-chao Song,Ding-chuan Zuo,Chang-sheng An,Xia-hui Zhang,Jin-hui Li,Zhen-jiang He,Yun-jiao Li,Jun-chao Zheng
High-capacity germanium-based anode materials are alternative materials for outstanding electrochemical performance lithium-ion batteries (LIBs), but severe volume variation and pulverization problems during charging–discharging processes can seriously affect their electrochemical performance. In addressing this challenge, a simple strategy was used to prepare the self-assembled GeOX/Ti3C2TX composite in which the GeOX nanoparticles can grow directly on Ti3C2TX layers. Nanoscale GeOX uniformly renucleates on the surface and interlayers of Ti3C2TX, forming the stable multiphase structure, which guarantees its excellent electrochemical performance. Electrochemical evaluation has shown that the rate capability and reversibility of GeOX/Ti3C2TX are both greatly improved, which delivers a reversible discharge specific capacity of above 1400 mAh g–1 (at 100 mA g–1) and a reversible specific capacity of 900 mAh g–1 after 50 cycles while it still maintains a stable specific capacity of 725 mAh g–1 at 5000 mA g–1. Furthermore, the composite exhibits an exceptionally superior rate capability, making it a good electrochemical performance anode for LIBs.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Ruixiang DENG,Bingbing CHEN,Haogeng LI,Zhong LI,Tao ZHANG,Yun YU,Lixin SONG
Microwave shielding materials and absorbers serve important roles in improving the reliability of smart devices and military equipment. In this work, three-dimensional (3D) Ti 3 C 2 T x /Fe 3 O 4 composites with adjustable electromagnetic responses are studied. Taking advantage of the negatively charged surface of the Ti 3 C 2 T x , the cationic surfactant cetyltrimethylammonium bromide (CTAB) is used to precipitate the delaminated Ti 3 C 2 T x sheets. The volatilization of CTAB during the annealing process inflates the Ti 3 C 2 T x , and leads to the three-dimensional architecture of the composite. The results show that the free-standing 3D Ti 3 C 2 T x /Fe 3 O 4 composite film exhibits a high shielding efficiency of 60 dB in the X band. Owing to the traits of great flexibility, low apparent density, and thin thickness, the 3D Ti 3 C 2 T x /Fe 3 O 4 composite film achieves a high specific shielding efficiency of 3.5 × 10 5 dB/(g·cm −2 ). Furthermore, through the control of crystal defects in one-step annealing treatment, the shielding material can be transformed into a wideband microwave absorber. A high reflection loss up to −57 dB can be realized. And a 2-mm-thick absorber whose reflection loss is better than −10 dB in 11.2 ~ 18 GHz is also achieved. The experimental and first-principal studies on the evolution mechanism reveal that the destruction of the Ti-C bond mainly leads to the degradation of electrical conductivity and the improvement of impedance matching. Introduced crystal defects can help enhance the dielectric loss as well. The synergistic effects of ohmic loss, dielectric loss, and magnetic loss give birth to a broadband absorption of the composite.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 48
·18010-18021
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IF 8.307
Guanshun Xie,Chuang Han,Fei Song,Yisong Zhu,Xuanyu Wang,Jialin Wang,Zhenjun Wu,Xiuqiang Xie,Nan Zhang
Engineering the spatial separation and transfer of photogenerated charge carriers has been one of the most enduring research topics in the field of photocatalysis due to its crucial role in determining the performances of photocatalysts. Herein, as a proof-of-concept, Ti3C2Tx MXene is coupled with a typical heterojunction of TiO2@CdS through a co-assembly strategy to boost electron pumping towards improving the photocatalytic efficiency. In addition to the band alignment-mediated electron transfer in TiO2@CdS–Ti3C2Tx heterojunctions, the plasmon-induced electric field enhancement of Ti3C2Tx is found to cooperate with the electron-reservoir role of Ti3C2Tx to extract photoinduced electrons. The synergistic dual functions of Ti3C2Tx promote multichannel electron transfer in TiO2@CdS–Ti3C2Tx hybrids to improve the photocatalytic efficiency. These results intuitively show that there is a wide scope to manipulate the spatial separation and transfer of photoinduced electrons by cultivating the fertile ground of Ti3C2Tx toward boosting the efficiency of solar-to-chemical conversion.
研究领域:
材料科学
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光化学
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产品关联
DOI
PubMed
高影响因子
Materials Chemistry Frontiers
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2022
·Vol. 6
·期 21
·3179-3192
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IF 8.683
Bo Dai,Feng Dong,Jia Yu,Shixuan Feng,Haowen Wang,Tingxi Li,Mingliang Ma,Jianxu Ding,Yong Ma
Electromagnetic radiation has been a special form of environmental pollution that has attracted widespread attention in the past few decades. Combining the advantages of one-dimensional (1D) materials forming conductive networks and two-dimensional (2D) materials possessing multiple reflections is an excellent research method for the development of electromagnetic wave (EW) absorbing materials. Herein, Ni@polypyrrole nanochains/Ti3C2Tx (Ni@PPy NCs/Ti3C2Tx, NiPM) ternary composites have been successfully prepared through the combined utilization of the solvothermal method, hydrothermal method and vacuum-assisted filtration. The ternary composites consisting of 1D core-shell Ni@PPy NCs (NiP) and 2D Ti3C2Tx can effectively combine conductive loss, dielectric loss and magnetic loss, resulting in excellent impedance matching. The minimum reflection loss (RLmin) of the prepared ternary composites can be up to −62.61 dB at 6.82 GHz with a thickness of 2.71 mm while the effective absorption bandwidth (EAB) is 4.46 GHz at 1.38 mm. This work provides a general guideline for the development of a MXene and conducting polymer matrix design for EW absorbing materials.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）