COMPOSITES PART B-ENGINEERING
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2018
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IF 4.92
Nadia Taloub,Abdelkhalek Henniche,Li Liu,Jun Li,Nahla Rahoui,Mohammad Hegazy,Yudong Huang
The pursuit of improving the performance of rigid-rod polymeric fibers using a new inorganic nano-materials and efficient methods is very attractive topic. The combination of the unusual properties of both materials could definitely produce an outstanding final product. Herein, we proposed a simple grafting method of a graphene-like titanium carbides Ti 3 C 2 (OH) 2 nanosheets (MXene) onto PIPD surface via covalent bond by using (3-Aminopropyl) triethoxysilane (APTES) as a bridging agent. The surface morphology and element compositions of PIPD fiber before and after grafting were characterized, and the effect of such treatment on the mechanical properties was also evaluated. The IFSS of the PIPD-Ti 3 C 2 (OH) 2 was highly increased by 61.54% because of the significant improvement the fiber/epoxy interaction and surface wettability . Though the tensile strength (TS) was slightly decreased by only 5%. Furthermore, the experiment results showed a great enhancement of UV and hydrothermal aging resistance of the grafted fibers comparing with untreated ones by 33% and 25% respectively.
研究领域:
材料科学
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聚合物复合材料
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纳米材料
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表面改性
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纤维增强
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Yuxuan Zhang,Junzhe Zhang,Hongming Zhao,Danfeng Zhang,Mei Wang,Peng Li,Liyong Wang,Yan-Bing He,Huiqi Wang
Quantum dots have been extensively utilized in diverse components of lithium-ion batteries (LIBs) due to their distinctive electronic structures, extremely high specific surface area, and remarkable interfacial regulation ability. In this work, a facile liquid-phase exfoliation method was employed to break down bulk boron into quantum-sized dots using a probe high-power ultrasonic crusher. The obtained boron quantum dots (BQDs) were confined within highly dispersed Ti 3 C 2 MXene, thereby forming BQDs/Ti 3 C 2 stacked composite anode materials for lithium-ion batteries. Based on the quantum confinement effect, BQDs exhibit superior electrochemical activity compared to bulk boron, providing abundant active sites for ion insertion and extraction. The well-dispersed BQDs in the Ti 3 C 2 MXene form a continuous network, facilitating efficient charge and ion diffusion and transport throughout the entire structure. Electron deficiency induced by BQDs occurs in the interlayers of Ti 3 C 2 MXene, thus the local electronic defect is introduced into the originally perfect periodic atomic arrangement and electronic potential field. This would cause ripples in the entire electronic system, leading to a redistribution of electrons. This not only enhances the charge transfer kinetics but also modulates the lithium-ion diffusion pathways through local electric field intensification. The as-prepared BQDs/Ti 3 C 2 stacked composite thus delivers an extremely high initial discharge capacity of 2514.5 mAh g −1 at 0.05 A g −1 , a large reversible capacity of 835.3 mAh g −1 at 0.1 A g −1 , and outstanding long-term cycle stability, with 958.0 mAh g −1 retained after 300 cycles. Notably, it also demonstrates exceptional long-term cycling performance at 2.0 A g −1 , with the capacity increasing from 459.5 mAh g −1 after 163 cycles to 1251.7 mAh g −1 after 759 cycles. The exploration of BQDs embedded in Ti 3 C 2 MXene is anticipated to inspire in-depth investigations into advanced BQD-powered MXene anode materials for LIBs.
研究领域:
材料科学
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储能技术
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纳米科技
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电化学
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DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2021
·
IF 7.46
Wenhai Wang,Shu Xiao,Zhijian Jia,Hongzhen Xie,Tianhua Li,Qiqin Wang,Ning Gan
Foodborne pathogens could result in serious health issues to public and thus some rapid analysis methods are urgent developed to monitor them. Herein, a dual-mode aptasensor based on electrochemical and colorimetric modes was constructed for the on-site detection of Vibrio parahaemolyticus ( V.P) in shrimps as a model. A novel nanoprobe ( [email protected] @MXenes) was developed to generate both electrochemical and colorimetric signals by modifying phenylboronic acid and ferrocene on Pt-MXenes nanocomposite . The nanoprobe exhibited both features of peroxidase mimic and specific recognition. Simultaneously, a V.P aptamer-functionalized electrode interface was fabricated to firstly specifically capture V.P, then conjugated with [email protected] @MXenes to form a sandwich complex. The complex could catalyze tetramethylbenzidine (TMB)-H 2 O 2 to produce a visible signal, and generate electrochemical signal simultaneously. Under the optimal condition, the aptasensor could determine as low as 5 CFU mL −1 V.P by electrochemical mode and 30 CFU mL −1 V.P by colorimetric mode. These superior performances may be attributed to that the synergistic catalysis and conductive effects deriving from Pt and MXenes on the nanoprobe can significantly amplify the signals to improve detection sensitivity. In particular, the dual detection system could mutually verify to achieve high accuracy. The aptasensor could also be expanded to rapid analysis of other food-borne pathogens through changing the aptamer on the electrode.
研究领域:
生物传感技术
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食品安全检测
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DOI
高影响因子
Advanced Materials Technologies
·
2021
·Vol. 6
·期 6
·2001157
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IF 7.848
Yucui Xiang,Liang Fang,Fang Wu,Shufang Zhang,Haibo Ruan,Haijun Luo,Hong Zhang,Wanjun Li,Xingming Long,Baoshan Hu,Miao Zhou
The conflict between high sensitivity and wide sensing range greatly limits the extensive application of flexible pressure sensors. To produce a sensor with both high sensitivity and wide range is still a challenging work. Herein, flexible and highly sensitive piezoresistive sensors with wide sensing range are developed by combining the alkali-treated 3D crinkled MXene with microstructured polydimethylsiloxane (PDMS). Sensors with different-roughness PDMS films as flexible substrate and the unprocessed MXene as the conductive material are prepared to clarify the geometric design for the ultra-wide pressure range (0–800 kPa). Then, other sensors assembled by NaOH-alkalized 3D crinkled MXenes and rough PDMS are fabricated to illustrate that the material optimization can further enhance the sensitivity (up to 1104.38 kPa −1 ). The sensor shows a low limit of detection (17 Pa), fast response time (100 ms), good cycle stability (3000 cycles, 300 kPa), and can detect over a wide pressure range from that of the tiny pills, pulse, heartbeat, throat vibration, and the change of water weight, exhibiting a broad prospect in health monitoring systems and human-machine interaction.
研究领域:
材料科学
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柔性电子学
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传感器与执行器
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纳米材料
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可穿戴技术
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Chao Liu,Wen Xiao,Guiyun Yu,Qiang Wang,Jiawei Hu,Chenghao Xu,Xinyi Du,Jianguang Xu,Qinfang Zhang,Zhigang Zou
Developing efficient heterojunction photocatalysts that have a high charge carrier separation rate and improved light-harvesting capacity is a crucial step in solving energy crisis and reducing environmental pollution. Herein, we synthesized few-layered Ti 3 C 2 MXene sheets (MXs) by a manual shaking process, and combined with CdIn 2 S 4 (CIS) to construct novel Ti 3 C 2 MXene/CdIn 2 S 4 (MXCIS) Schottky heterojunction through a solvothermal method. The strong interface between two-dimensional (2D) Ti 3 C 2 MXene and 2D CIS nanoplates led to enhanced light-harvesting capacity and promoted charge separation rate. Additionally, the presence of S vacancies on the MXCIS surface helped to trap free electrons. The optimal sample, 5-MXCIS (with 5 wt% MXs loading), exhibited outstanding performance for photocatalytic hydrogen (H 2 ) evolution and Cr(VI) reduction under visible light due to the synergistic effect of enhanced light-harvesting capacity and charge separation rate. The charge transfer kinetics was thoroughly studied using multiple techniques. The reactive species of • O 2 − , • OH and h + were generated in 5-MXCIS system, and e − and • O 2 − radicals were found to be the main contributors to Cr(VI) photoreduction. Based on the characterization results, a possible photocatalytic mechanism for H 2 evolution and Cr(VI) reduction was proposed. On the whole, this work provides new insights into the design of 2D/2D MXene-based Schottky heterojunction photocatalysts for boosting photocatalytic efficiency.
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高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 13
·6934-6944
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IF 11.9
Yuxiao Yang,Jianyun Zhao,Jiuhong Wang,Yinhuan Li,Wei Yu,Shujiang Ding
Magnetic MXene-based composites have been extensively developed for highly effective electromagnetic (EM) wave absorption. However, previously reported studies neglected the influence of regulating primary dissipation sources and electron migration on absorption performance. This is probably due to the fact that the present modification methods frequently severely oxidize MXenes, obliterating the electron migration pathway. Here, a facile strategy is developed to create sandwich-like m-Ti3C2/Fe3O4 (MTF) composites by electrostatic assembly. The room temperature assembly process prevents oxidation and safeguards the in-plane electron migration path of m-Ti3C2. This makes it possible to reveal the mechanism by which increased Fe3O4 content inhibits electron migration, lowers attenuation capacity, and leads to increasing impedance-matching thickness. More importantly, we provide the first explanation of the absorption band transfer phenomenon. Additionally, at a thickness of 2.96 mm, the as-prepared MTF composites exhibit exceptional EM wave absorption capacity, reaching −77.5 dB with an effective absorption band of 3.0 GHz. The comprehensive insight presented in this work offers a solid theoretical foundation for an in-depth understanding of the influence of electron hopping behaviors on electromagnetic characteristics and, consequently, EM wave absorption performance, which further offers an essential roadmap to fabricate high-performance absorbers.
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NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 14
·6540-6550
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IF 3.3
Guoxu Ni,Yingjie Zhang,Yuzheng Li,Chengxiao Xu,Jinjie Zhang,Peipei Huo,Bo Liu
Metal selenides are considered outstanding potential anodic materials of sodium ion batteries due to their large specific capacity. However, their actual application is heavily restricted because of the unfavorable volume expansion, inferior cycling stability, as well as inactive kinetics. To solve this problem, the structure of SnSe@f-Ti3C2 was rationally designed and synthesized via a simple one-pot solvothermal process for the first time in this work. The high-capacity 0D SnSe quantum dots grow in situ and are characterized as homogeneously distributed on the 2D conductive MXene sheet via the electrostatic attraction of Sn ions and MXene. The SnSe@f-Ti3C2 composite exhibits a remarkably increased capacity of 540 mA h g−1 at 0.05 A g−1 and excellent cycle performance of 97.79% retention ratio after 100 cycles at 0.5 A g−1. The outstanding electrochemical performance of the SnSe@f-Ti3C2 hybrid was mainly attributed to the synergy between 0D SnSe with high capacitance and the 2D MXene sheet with superior conductivity. On one hand, 0D SnSes act as pillars between MXene layers in order to prevent the stacking of MXene nanosheets. On the other hand, the fast electron/ion transport capability and large specific surface area provided by MXene as a conductive skeleton facilitates favorable transfer kinetics as well as close contact in the electrolyte/electrode interface.
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ACS Omega
·
2023
·
IF 4.1
Binbin Chen,Weiwei Lu,Peng Xu,Kaisheng Yao
The photocatalytic degradation of pollutants is an effective and sustainable way to solve environmental problems, and the key is to develop an efficient, low-cost, and stable photocatalyst. Polymeric potassium poly(heptazine imide) (K-PHI), as a new member of the carbon nitride family, is a promising candidate but is characterized by a high charge recombination rate. To solve this problem, K-PHI was in-situ composited with MXene Ti3C2-derived TiO2 to construct a type-II heterojunction. The morphology and structure of composite K-PHI/TiO2 photocatalysts were characterized via different technologies, including TEM, XRD, FT-IR, XPS, and UV–vis reflectance spectra. Robust heterostructures and tight interactions between the two components of the composite were verified. Furthermore, the K-PHI/TiO2 photocatalyst showed excellent activity for Rhodamine 6G removal under visible light illumination. When the weight percent of K-PHI in the original mixture of K-PHI and Ti3C2 was set to 10%, the prepared K-PHI/TiO2 composite photocatalyst shows the highest photocatalytic degradation efficiency as high as 96.3%. The electron paramagnetic resonance characterization indicated that the·OH radical is the active species accounting for the degradation of Rhodamine 6G.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Yingnan Yang,Haifeng Yang,Pengfei Tang,Xiaodong Li,Weimiao Wang,Guangcheng Yang
Laser induced high temperature pulse (HTP) generation has been widely used in some high-immediacy applications requiring dramatic temperature changes. Recent years researchers put interest in light-to-heat (include photothermal, light induced exothermic reaction and combination of both) materials to reduce the initiating energy of the laser ignition. However, the laser energy for realizing sufficient light-to-heat conversion is still high. MXene exhibits excellent light absorption, high light-to-heat conversion efficiency and has abundant metastable atoms which trend to undergo exothermic chemical reactions, but its incomplete oxidation affects its total heat release when the laser power is relatively high. Herein, we have prepared a ZIF-67/Ti 3 C 2 MXene intercalated membrane. It is found that porous ZIF-67 exhibits a synergistic effect on MXene and can significantly improve its physical/chemical coupled HTP by enhancing its light absorption and subsequent energy release during its oxidation. ε 2,4,6,8,10,12-(hexanitrohexaaza) cyclododecane (ε-CL-20) laser ignition experiments prove that ZIF-67/Ti 3 C 2 MXene intercalated membrane exhibits better ignition performance than pure MXene membrane by reducing both ignition threshold (151.2 mJ) and ignition delay (21 ms) at a low laser power intensity (59.7 W/cm 2 ). This work can provide an insight for the structural design of new light-to-heat membranes.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hao Ai,Siyu Jian,Yuan Yao,Kaifeng Du
Designing and tuning macropores into aligned structure is of considerable importance in promoting mass transfer, improving chromatographic performance and enhancing column efficiency. Herein, we have synthesized an innovative aligned porous Chitosan/Ti 3 C 2 MXenes monolith via a facile, versatile and reproducible unidirectional “freeze-casting” method. Typically, the accumulation of Ti 3 C 2 MXenes directs the formation of aligned structure during the unidirectional freezing process and thus aligned macropores are formed by a subsequent freeze-drying process. By various physical characterization, the distribution of aligned macropores, micropores and specific surface area are determined to be 21 μm, 2.53 nm and 103.09 m 2 ·g −1 , respectively. In addition, monolith bed permeability is calculated to be 1.94 × 10 -12 m 2 , approximately 10 times than conventional monolith. Batch adsorptive experiments confirm that adsorptive capacities to bovine serum albumin and bovine hemoglobin are remarkably elevated on account of the high affinity of proteins onto those imbedding Ti 3 C 2 MXenes. Meanwhile, continuous mass transfer equation describes the aligned macropores facilitate the film mass transfer factor ([ k L a ] f ) in a separation process thus driving the global mass transfer factor ([ k L a ] g ). It is expected that the aligned porous Chitosan/Ti 3 C 2 MXenes monolith promises great potential for a continuous separation of proteins when a wholesale production is required.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Ben Ren,Jiaqi Yang,Zhengtao Feng,Bihe Yuan
Developing thermoplastic polyurethane (TPU) composites with excellent fire-safe properties is greatly significant to expand the application fields. Two-dimensional MXene has been proven effective in reducing fire hazards of TPU whereas its poor dispersion in TPU is a serious concern. Herein, benzyl trimethyl ammonium chloride and victoria blue B modified Ti 3 C 2 were synthesized through interface engineering methods and TPU composites were prepared via severally introducing the two modified Ti 3 C 2 by solvent mixing and hot pressing measures. No apparent agglomeration is observed, suggesting uniform dispersion of functionalized Ti 3 C 2 in TPU. The TPU composites present superior performances in flame retardancy and smoke suppression, and the distinguished fire safety can be attributed to the physical barrier and catalytic charring effect of functionalized Ti 3 C 2 and TiO 2 . This research presents a convenient way to obtain functionalized Ti 3 C 2 , enriching the future applications of MXene as flame retardant and reducing the fire hazards of TPU.
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高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Xiaomeng Li,Shuxue Zhou
Modification of MXene is usually necessary for their application in corrosion resistant coatings. Nevertheless, the influence of the grafting degree of modifier is not concerned in the past. In this work, modified Ti 3 C 2 nanosheets (G-Ti 3 C 2 ) with different grafting degree of (3-glycidyloxypropyl)trimethoxysilane (GPS) were obtained by changing GPS dosage, and further incorporated into waterborne epoxy resin coatings (WEP). GPS modification led to deteriorated dispersion in water but improved dispersion stability of Ti 3 C 2 nanosheets in waterborne epoxy resin at appropriate GPS-grafting degree presumably due to the interaction between the liquid epoxy resin droplet and G-Ti 3 C 2 nanosheets. The GPS grafting degree was also critical to get the corrosion resistant nanocomposite coatings . The best corrosion resistance, i.e., with impedance modulus four orders of magnitude higher than that of pure WEP after 30 days' immersion in salt solution as well as the lightest corrosion in salt spray test, was achieved using the Ti 3 C 2 nanosheets modified at the GPS-to-Ti 3 C 2 mass ratio of 30:1. Better dispersion of G-Ti 3 C 2 nanosheets and stronger interaction between epoxy resin matrix and G-Ti 3 C 2 nanosheets should be responsible for the excellent corrosion resistance of the coatings at optimum GPS grafting degree.
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危险品化学品经营许可证（带存储）