COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2024
·
IF 8.1
Qingsong Zhu,Xinyu Lei,Xiaoqin Zha,Eman Ramadan Elsharkawy,Chenye Ren,Huiyuan Chang,Salah M. El-Bahy,Juanna Ren,Renjie Wang,Zeinhom M. El-Bahy,Zhanhu Guo
Ti 3 C 2 MXene (TM) has great application potential in the field of wave absorption and corrosion resistance due to its unique performance, such as high specific surface area, high electrical conductivity, excellent mechanical and good chemical stability. However, it is difficult to obtain uniformly dispersed TM in the resin matrix due to rapid agglomeration behavior. It is difficult to obtain uniformly dispersed Ti 3 C 2 MXene (TM) in the resin matrix due to rapid agglomeration behavior. Herein, a novel method is presented to improve the corrosion protection and dispersion of TM by polymerizing polyaniline (PANI) nanoparticles between layers. The waterborne epoxy (WEP) coating with PANI-TM had high mechanical properties including impact resistance, adhesion, and flexibility and wear resistance. The PANI-TM-WEP composites can effectively absorb more than 90 % of the electromagnetic waves and demonstrate a decreased glass transition temperature of WEP from 128.0 to 107.6 ℃. Moreover, the |Z| 0.01Hz value of the PANI-TM 0.5 % was 1.2369 × 10 6 Ω·cm 2 , which was one order of magnitude larger than WEP coating. The high-performance anticorrosion of PANI intercalated TM coating is attributed to the synergistic effect of impermeable TM nanosheets and passivation effect of PANI. Therefore, PANI-TM is a potential choice for applications in the fields of anticorrosion and microwave absorption.
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Huanran Chen,Jiahong He,Jibin An,Qiang Xu,Zhilin Xing
Sulfamethazine is an antibiotic whose anti-degradability and potential for water pollution have become a threat to water contamination. This study designed a composite cathode of Fe-MOF-525/Ti 3 C 2 to effectively remove SMT through Photoelectro-Fenton (PEF). Characterization and photoelectrochemical test results indicate that Fe-MOF-525/Ti 3 C 2 contains abundant active sites and exhibits excellent catalytic performance for the oxygen reduction reaction (ORR). Tests demonstrated that under optimized conditions, the PEF system achieved a removal rate of 95.6% for SMT and a cumulative H 2 O 2 concentration of 53 mM within 120 minutes. Reactive oxygen species (ROS) capture experiments confirmed that •OH and •O 2 − are the main ROS responsible for the degradation of SMT. Further studies investigated the possible degradation pathways. Overall, this work demonstrates an example of pollution control resulting from the philosophy of green chemistry, which offers a promising pathway to reduce the chemical demand for advanced oxidation processes.
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PubMed
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JOURNAL OF CATALYSIS
·
2025
·
IF 6.5
Wenli Zhang,Xu Han,Xianhong Zheng,Yi Yang,Zhiqi Zhao,Haiwei Yang,Yi Zhang,Chengbo Du,Zongqian Wang,Qingbo Xu,Changlong Li,Peng Wang
Solar-driven photocatalysis is inherently limited by its diurnal discontinuity. Herein, we report a V 2 O 5 /g-C 3 N 4 /Ti 3 C 2 triadic composite that transcends this limitation via a “micro proton-battery-like” mechanism, enabling round-the-clock catalytic activity. The optimized composite achieves 93.9 % tetracycline degradation under visible light and, remarkably, maintains 64.1 % efficiency in the dark. This is underpinned by an 8-fold higher electron storage capacity (0.16 μmol/mg) than pristine g-C 3 N 4 , achieved via reversible V 5+ /V 4+ redox transitions. DFT calculations corroborate charge localization in V 3d orbitals during the light-driven “charging” phase and subsequent Ti 3 C 2 -mediated electron release for ·O 2 − generation in the dark. This work establishes a groundbreaking paradigm that unifies photocatalysis with electrochemical energy storage for persistent environmental remediation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
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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高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
·
IF 7.3
Wei Zhang,Lianfeng Wu,Shuxue Zhou
MXenes have attracted significant attention due to their unique properties, including antibacterial property and electrical conductivity. However, the antibacterial performance of MXenes-based coatings strongly depends on their superficial distribution. In this study, Ti 3 C 2 nanosheets were modified with dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium (QAS) and further incorporated into waterborne epoxy coatings. Influence of modifier ratio on the distribution of QAS-modified Ti 3 C 2 nanosheets (Q-Ti 3 C 2 ) in coatings as well as on the antibacterial/antistatic performance of coatings was investigated. Appropriate amount of QAS (i.e., 10 %) for modification was critical to achieve high antibacterial performance at low content of Ti 3 C 2 nanosheets. The Q-Ti 3 C 2 embedded coating could get 99.4 % inhibition against E. coil and 100 % against S. aureus at 0.5 wt% loading. In contrast, the coating with unmodified Ti 3 C 2 only exhibited antibacterial rate of 85.3 % and 87.4 % for E. coil and S. aureus , respectively. The prominent antibacterial performance of Q-Ti 3 C 2 based coatings mainly results from the enriched residence of Ti 3 C 2 nanosheets at the upper layer of coatings and partially from the intrinsic antibacterial property of QAS. Additionally, the superficial distribution of Ti 3 C 2 nanosheets endowed the coatings with low surface resistance of 1.8 × 10 9 Ω, thereby conferring antistatic properties, and hence, facilitating antibacterial durability, even if the coating contains as low as 1 wt% Q-Ti 3 C 2 nanosheets. The nanocomposite coatings also exhibited better adhesion and high pencil hardness.
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SENSORS AND ACTUATORS B-CHEMICAL
·
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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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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高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 20
·e73535
·
IF 2.3
Wei Liu,Nannan Wang,Zhangyu Dai,Yanhua Sun,Qiongyao Zeng
This article is based on Zn-MOF-8 and uses a simple thermal synthesis method to prepare nitrogen-doped mesoporous carbon spheres (NMC), which is then combined with Ti 3 C 2 to prepare NMC/Ti 3 C 2 nanocomposites. It was characterized by SEM, EDS, XPS, FTIR, and electrochemical methods. The NMC/Ti 3 C 2 nanocomposite modified glassy carbon electrode (GCE) was used for sensitive detection of isoquercetin (IQ), achieving a wide linear range of 0.1–100 µM and a low detection limit of 0.073 µM (S/N = 3). The modified electrode also exhibits good selectivity, excellent anti-interference performance and can be used for actual sample detection. Graphical Nitrogen-doped mesoporous carbon spheres (NMC) were prepared using a simple thermal synthesis method with Zn-MOF-8 as a precursor. Subsequently, NMC was combined with Ti 3 C 2 to prepare NMC/Ti 3 C 2 nanocomposites. The NMC/Ti 3 C 2 nanocomposites were characterized using SEM, EDS, XPS, FTIR, and electrochemical methods. The NMC/Ti 3 C 2 nanocomposites were used to modify glass carbon electrodes (GCE), resulting in NMC/Ti 3 C 2 /GCE, which was employed for the sensitive detection of quercetin (IQ), achieving a wide linear range of 0.1–100 µM and a low detection limit of 0.073 µM (signal-to-noise ratio S/N = 3). The modified electrode also exhibited good selectivity and excellent anti-interference capability, making it suitable for detecting real samples.
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NANO
·
2025
·
IF 1.1
Jinglin Wang,Yuntian Wei,Shikun Chen,Chan Zheng
Efficient interfacial carrier transfer and separation can effectively enhance photocatalytic activity. In this study, a high-performance Z-scheme Ti 3 C 2 @TiO 2 /g-C 3 N 4 (TCTCN) ternary photocatalyst possessing a hollow flower-like architecture was synthesized using a reliable and effective method. Ti 3 C 2 @TiO 2 heterojunctions were constructed because exfoliated Ti 3 C 2 was partially oxidized to TiO 2 during the formation of hollow g-C 3 N 4 flower-like microspheres. In the Z-scheme heterojunction, the highly conductive metallic Ti 3 C 2 layers functioned as solid-state electron mediators, promoting electron–hole separation and migration efficiency. Under visible-light irradiation, the as-synthesized TCTCN photocatalyst possessed outstanding photocatalytic tetracycline (TC) degradation efficiency that was 2.03-fold and 1.25-fold higher than those of individual layered and hollow flower-like g-C 3 N 4 , respectively. The excellent photocatalytic TC degradation efficiency is attributed to the unique hollow structure and synergy among the Ti 3 C 2 , TiO 2 and g-C 3 N 4 structures in the TCTCN composite, enabling the Z-scheme-mechanism-assisted rapid separation and slow recombination of photoinduced electron–hole pairs because of the increased photocatalytic activity. Moreover, the TCTCN ternary hybrid photocatalysts possessed good physical stability and reusability, and the TC degradation efficiency negligibly decreased after five cycles. This work is an important development to establish a sound foundation for designing g-C 3 N 4 -based hybrid photocatalysts possessing substantial charge carrier separation and transfer for efficiently degrading antibiotics.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124205
·
IF 7.5
Kaige Chen,Jie Li,Yongxiang Wang,Yong Dai,Yongming Luo,Xiaohua Cao,Xiaoping Xing
Photothermal conversion of CO 2 to methane offers a promising pathway for simultaneous carbon recycling and renewable energy storage. To date, Ni-based catalysts dominate CO 2 methanation. However, their low-temperature activity under photothermal conditions still requires improvement. MTiO 2 derived from Ti 3 C 2 MXene retains its two-dimensional (2D) layered structure and excellent photothermal conversion properties. Herein, we synthesized Ru-Ni@MTiO 2 catalysts through hydrothermal treatment of Ni-impregnated MTiO 2 with controlled Ru loading ( x = 1, 3 and 5 wt%). The optimal 3Ru-Ni@MTiO 2 catalyst achieved a CH 4 production rate of 86.25 mmol·g −1 ·h −1 at 300 °C, which is 1.3-fold higher than that of the Ru-free Ni@MTiO 2 counterpart. The superior catalytic performance stems from the synergistic electronic effect between Ni and Ru and their dual-site cooperation. Electron transfer from both Ru and MTiO 2 to Ni sites elevates the electron density of metallic Ni, which weakens the H-H bond and accelerates the dissociative adsorption of H 2 . Furthermore, Ru loading not only broadens the light absorption range and promotes photogenerated charge separation, but also increases the density of moderate basic sites, thus boosting CO 2 adsorption and activation. This work provides new insights into the design of bimetallic photothermal catalysts for CO 2 methanation.
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JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Zhifang Liu,Yuyi Song,Kunxiang Deng,Caiyu Ge,Xiang Ye,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
Rational regulation of the interface and realization of synergistic electrocatalytic activity in functionalized structure represent a key strategy for developing high-selectivity electrochemical sensors toward emerging environmental pollutants. In this work, a hierarchical Ti 3 C 2 /Co@CeO 2 -NCNT composite electrode was rationally designed and fabricated via defect and interface engineering, and employed innovatively as a high-performance sensing platform for trace-level detection of bithionol (BT) in aquatic environments. In this architecture, the 2D conductive Ti 3 C 2 framework effectively disperses and stabilizes Co@CeO 2 -NCNT components, providing abundant pathways for efficient electron transfer. The as-obtained sensor delivers outstanding analytical performance, including a low limit of detection 2.82 nM, a wide linear range of 5 nM to 9 μM, and excellent stability and practicality in real water samples with satisfactory recoveries of 97.3% - 104.4%. Density functional theory (DFT) calculations confirm that p-d-f orbital hybridization greatly enhances BT adsorption, interfacial charge-transfer kinetics, and overall catalytic efficiency. This work not only provides a novel and sensitive electrochemical platform for BT detection, but also offers valuable guidance for the targeted design of advanced electrocatalytic materials for specific environmental pollutants by clarifying the synergistic mechanism of interface engineering and defect modulation.
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高影响因子
ANALYTICAL LETTERS
·
2026
·
IF 1.8
Sumin Xu,Jiajia Zhang,Jianying Qu
Se@Ti3C2/CNs nanocomposites were successfully prepared through combining Ti3C2 MXene with ZIF-8-derived nitrogen-doped carbon materials (CNs) and employing a selenization strategy. The morphology and structural information of the material were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Electrochemical investigation showed that this material exhibited outstanding electrocatalytic performance to acetaminophen (AP) and p-aminophenol (4-AP) and could detect them simultaneously in wider linear ranges of 0.10–400.00 μM and 0.10–330.00 μM respectively with detection limits of 45.7 and 46.0 nM, respectively. Analysis of water samples and artificial urine shows that the sensor based on this material provides satisfactory results for AP and 4-AP with satisfactory selectivity (current change is less than 5% of the initial value) and stability (current retains above 95% of its initial response after 10 days of storage), which offers potential applications in drug analysis and environmental monitoring.
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危险品化学品经营许可证（带存储）