JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 3.1
Yu Zeng,Lu Tang,Fangfang Guo
Fluorosilicone rubber (FSR) has emerged as a promising matrix for actuator composites, while the trade-off between dielectric performance and mechanical robustness restricts its practical applications. Herein, we report a series of FSR/Ti 3 C 2 T x MXene composites modified with nano-sized BaTiO 3 (nBT) and micro-sized BaTiO 3 (μBT) to investigate the size-dependent effects of BaTiO 3 on composite performance. Owing to the coordination effect between MXene and BaTiO 3 , uniform dispersion of fillers was achieved, and the composites exhibited thermal stability exceeding 400°C. The FSR/MXene composite with 8 phr (parts per hundred rubber) nBT showed a tensile strength of 486 kPa, elongation at break of 194%, and elastic modulus of 356 kPa, superior to the μBT-modified composite. It also possessed a higher dielectric constant (12.85 at 10 3 Hz) and lower dielectric loss (0.00522) than μBT-modified counterparts, attributed to stronger interfacial polarization and less particle agglomeration. Notably, an actuated strain of 19.58% at 45 kV mm −1 was achieved, 35.7% higher than the μBT-modified composite. This work reveals that BaTiO 3 particle size significantly regulates the synergistic interaction between ceramic particles and conductive MXene, providing a feasible strategy for designing high-performance FSR-based composites toward soft actuator and sensor applications.
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Journal of Water Process Engineering
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2026
·
IF 6.6
Xinyu Jia,Ruihao Wang,Qian Li,Xiyan Sun,Shuxian Li,Li Wei,Yu Tian,Jiangdong Xiang,Xitong Sun
In this work, a multifunctional adsorbent based on zwitterion modified Ti 3 C 2 T x MXene (MPI) was synthesized by surface grafting polymerization, followed by modification with polyethylenimine and sodium chloroacetate. This adsorbent exhibited a high density of functional groups, switchable surface charge characteristics and plenty of active sites of iminoacetic acid chelating groups. Subsequently, methylene blue, congo red, Pb(II), and Cr(VI) were selected as model compounds for cationic/anionic dyes and heavy metal ions to estimate the adsorption performance. The material exhibited exceptional adsorption capacities, and the maximum adsorption capacities were determined as 479.8 mg/g for methylene blue, 481.9 mg/g for congo red, 300.6 mg/g for Pb(II) and 265.9 mg/g for Cr(VI), respectively. Adsorption equilibrium was reached within 10–120 min and the adsorbent showcased excellent removal efficiency. Moreover, the adsorbent demonstrated excellent reusability，with no significant changes after ten consecutive adsorption-desorption cycles. Mechanism studies revealed that electrostatic attraction and chelation played dominant roles in the adsorption process. These results suggest that MPI possesses advantages of simple preparation, multifunctional integration, high adsorption performance, and good stability, making it a promising universal adsorbent for the removal of both dyes and heavy metal ions from wastewater.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Donghai Wu,Silu Li,Guanghua Lu,Hanyu Fang,Jun Hou
Co 0.5 /Cu 0.5 -Ti 3 C 2 Tₓ achieved excellent PMS activation and APAP removal. • A synergistic radical/non-radical mechanism governed the efficient degradation process. • Co/Cu diatomic synergy enhanced PMS adsorption, electron transfer, and mutual redox cycling. • APAP degradation pathways were elucidated, confirming effective detoxification. A central challenge in heterogeneous peroxymonosulfate (PMS) activation is achieving catalysts with highly active interfacial sites to enable both efficient pollutant degradation and environmentally safe water treatment. Herein, cooperative Co/Cu dual-atom sites were anchored on Ti 3 C 2 T x MXene (Co/Cu-Ti 3 C 2 T x ). The optimized Co 0.5 /Cu 0.5 -Ti 3 C 2 T x catalyst achieved 96.9% removal of the emerging contaminant acetaminophen (APAP) within 60 min via PMS activation, markedly outperforming its single-atom analogues by 21.0–58.6%. Response surface methodology (RSM) analysis indicated that the system operated efficiently under near-neutral pH and mild conditions. Quenching experiments and electron paramagnetic resonance (EPR) analysis suggested that APAP degradation proceeded via a coupled mechanism involving contributions from both reactive oxygen species (predominantly •OH, •O 2 − , and 1 O 2 ) and high-valent metal-oxo species (HVMOS). Density functional theory (DFT) calculations revealed that the synergistic interaction between Co/Cu sites enhanced PMS adsorption, improved electron transfer efficiency, and accelerated the redox cycles between Co 0 /Co 2+ and Cu + /Cu 2+ , thereby cooperatively promoting the activation of PMS. Based on the identification of intermediates, the degradation pathway of APAP was proposed to involve hydroxylation of the benzene ring, ring-opening, deacetylation, and ultimately oxidative degradation. The biotoxicity of the treated effluent decreased, confirming the effectiveness and environmental safety of the process. These findings advance the mechanistic understanding of bimetallic PMS activation and present a viable approach for the remediation of water containing refractory emerging contaminants. Download: Download high-res image (148KB) Download: Download full-size image
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Shengdong Cai,Fangyu Gan,Lichun Cheng,Qingrong Yao,Jiang Wang
Balancing dielectric attenuation and impedance matching is essential for developing efficient MXene-based EMW absorbers because an excessively developed conductive network may deteriorate impedance matching and hinder electromagnetic wave penetration. Herein, Ti 3 C 2 T x MXene/Y 2 O 3 /C composites were prepared through in situ solvothermal assembly followed by pyrolysis. By increasing the Ti 3 C 2 T x MXene feed fraction, the dielectric response and impedance-matching behavior of the composites were systematically regulated. Structural analyses confirmed the formation of crystalline Y 2 O 3 , carbonaceous domains, and MXene-based heterostructures with mesoporous features. The composites exhibited composition-dependent and non-monotonic absorption behavior. MY-3(Nominal MXene-to-precursor feed ratios of 2:5) composite delivered the strongest absorption intensity with a minimum RL of −49.4 dB, while MY-4(Nominal MXene-to-precursor feed ratios of 1:2) composite achieved the broadest EAB of 7.2 GHz. The enhanced absorption performance is attributed to the regulated conductive network, interfacial polarization at MXene/Y 2 O 3 /C heterointerfaces, dipole polarization from polar bonds and oxygen-containing groups, and improved impedance matching. Radar cross-section simulations further verified the scattering suppression capability of the optimized coatings. This work demonstrates that Y 2 O 3 /C-assisted dielectric regulation is an effective strategy for improving broadband absorption in MXene-based dielectric absorbing materials.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
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IF 5.9
Yifan Deng,Ying Han,Changlun Chen,Xuemei Ren
Efficient and selective extraction of uranium (U(VI)) from complex seawater remains a critical challenge. This study proposes a dual-drive interfacial engineering strategy integrating eco-friendly plasma modification with covalent grafting to fabricate an advanced amidoxime modified MXene-based adsorbent. Hydrogen/argon plasma treatment significantly enhanced the wettability and surface hydroxyl reactivity of Ti 3 C 2 T x (TC) substrate. Subsequently, amidoxime (AO) groups were covalently anchored via a diazonium salt reaction followed by hydrothermal treatment, successfully constructing the AO/TC-H composite. The resultant material exhibited a remarkable maximum U(VI) adsorption capacity (760.18 mg·g −1 ), maintaining high efficiency across a broad pH range. Furthermore, AO/TC-H demonstrated robust cyclic stability, retaining over 87% of its initial adsorption capacity after five consecutive adsorption-desorption cycles. Notably, even in the presence of high-concentration competing vanadium, AO/TC-H preserved 68.9% of its U(VI) adsorption capacity, underscoring its exceptional selectivity. Density functional theory (DFT) calculations further elucidated the synergistic coordination mechanisms of hydroxyl and amidoxime groups with uranyl ions at the microscopic level. This work not only establishes a versatile, eco-friendly paradigm for the precise surface functionalization of 2D materials, but also provides a promising candidate for the practical deployment of seawater uranium extraction.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Haitao Zhang,Hanyu He,Yongxiang Huang,Shi Pu,Yanting Xie,Junfeng Huang,Xinling Jiang,Yongbin Wang,Shenglong Wang,Hongzhi Peng,Yuanxiao Qu,Weiqing Yang
As a recent rising star 2D material, MXenes have attracted great attention in many fields. However, the weak interaction induced self-stacking phenomenon and surface oxidation caused structure failure seriously hinder the practical application of MXenes. Herein we develop a biothermochemistry method to construct 3D crosslinked Ti 3 C 2 T x (3D-MX). This novel structured 3D-MX can be prepared in five different kinds of biological reagents, showing good university. After crosslinking, 3D-MX not only resists layer stacking but also exhibits extreme on-shelf stability up to 550 days. We reveal that the formation mechanism originates from the electrostatic/chemical interaction between surface functional groups and the crosslinking agents. Interestingly, the biothermochemical treated Ti 3 C 2 T x MXenes exhibit an extremely-rapid film-processed capability (only 3 min), addressing the long-standing issue of low-efficient and tedious solution-vacuum filtrated 2D films. To further verify its practical application, we assemble 3D-MX based supercapacitors that show a high specific capacitance of 265 Fg −1 at 1 A g −1 , and moreover, no supercapacitance attenuation within 720 h. This proposed biothermochemistry method to simply and rapidly build 3D Ti 3 C 2 T x crosslinked network provides a new perspective to promote the practical application of MXenes through simultaneously addressing their self-stacking and oxidative degradation issues.
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Polymers
·
2026
·Vol. 18
·期 17
·2078
·
IF 5.8
Liqun He,Wan Zhang,Jianji Wang,Jianxiao Bian
Polylactic acid (PLA) is derived from renewable resources and can be composted under controlled industrial conditions, but its flammability and brittleness limit wider use. This study combined Ti3C2TxMXene with surface terminations and an intumescent flame retardant (IFR) system based on ammonium polyphosphate and pentaerythritol (4:1,w/w). A styrene–butadiene–styrene (SBS) elastomer was then added to improve toughness. At a total flame retardant loading of 10 wt%, PLA/8.5IFR/1.5MXene reached a limiting oxygen index (LOI) of 30.32% and a UL-94 V-0 rating without dripping. Compared with PLA/10IFR, the peak heat release rate (PHRR) and total heat release (THR) decreased by 18.6% and 28.8%, respectively, and the residue at 600 °C increased from 5.88 to 6.75 wt%. The composite containing MXene formed a denser char and showed a slightly lower Raman D/G intensity ratio. Adding 10 wt% SBS increased notched impact strength by 48% for PLA/IFR and 31% for PLA/IFR/MXene, but reduced tensile strength and modulus. MXene therefore improved the barrier in the condensed phase at a lower IFR content, while SBS partly recovered toughness.
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CARBON
·
2023
·
IF 10.9
Shuai Zhang,Ying Huang,Jiaming Wang,Xiaopeng Han,Guozheng Zhang,Xu Sun
Flexible energy storage systems and electromagnetic pollution have become issues that need to be resolved in equipment research and development due to the widespread use of portable electronic devices and 5G networks . MXene is competent for supercapacitors and electromagnetic wave absorbers through sensible composite and microstructure design. Herein, Cu 1.5 Mn 1.5 O 4 Hollow Nanosphere Decorated Ti 3 C 2 T x MXene (CuMnHS@MX) was prepared by simple electrostatic self-assembly. Hybrid membranes can be quickly prepared by vacuum-assisted filtration. CuMnHS@MX exhibits excellent electromagnetic wave absorption performance and electrochemical energy storage properties. High specific capacitance (2089 mF/cm 2 at 2.5 mA/cm 2 ) and excellent cycle stability (99.89% after 8000 cycles) are achieved, which are attributed to the increased interlayer spacing and improved interlayer ion transport efficiency. When assembled into symmetrical flexible all-solid-state supercapacitor (SC), the device has a specific capacitance of 382.9 mF/cm 2 and an energy density of 53.18 μWh/cm 2 at a power density of 277.8 μW/cm 2 . Meanwhile, CuMnHS@MX has advantageous absorbing properties. When the thickness is 4 mm, the minimum reflection loss (RL min ) is −53.42 dB at 6.08 GHz. Adjustable absorbing property is achieved, and the absorbing energy efficiency can cover X and most C, Ku bands . These excellent EMA properties are derived from the 3D structure and rich dipole/interface polarization. CuMnHS@MX is a promising bifunctional material for electrochemical energy storage and electromagnetic wave absorption.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yufei Wang,Yue Wang,Gaofei Pan,Jian Huo,Ruiguang Xing,Xin Ge
Owing to the rapid development of information and electronic technologies, it is urgent to design and prepare new materials with electromagnetic interference (SEI) shielding function to reduce electromagnetic pollution. Herein, a thin magnetic Ti 3 C 2 T x MXene (MMX) nanocomposite film with excellent EMI shielding performance was obtained by combining Ti 3 C 2 T x MXene nanosheets with porous magnetic microspheres (PMMs). The lamellar structure of Ti 3 C 2 T x MXene nanosheets provides flexibility to the MMX nanocomposite film, enabling it to bend and deform in a flat plane. Furthermore, PMMs possess magnetic and dielectric properties, enhancing the attenuation ability of the MMX nanocomposite film to electromagnetic wave energy. The rough surface of PMM can improve the electromagnetic wave consumption through multiple reflection and enhance the performance of Ti 3 C 2 T x MXene EMI shielding nanocomposites. MMX nanocomposite exhibits excellent EMI shielding performance (SE T : 66.9 dB, SSEt: 5251 dB cm 2 g −1 ). We anticipate that this flexible nanocomposite film with excellent EMI shielding effect will be widely used in different fields.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Tangdong Feng,Yiwen Hu,Xue Chang,Wanxia Huang,Daoyuan Wang,Hongfu Zhu,Tianyu An,Wenping Li,Kun Meng,Xueguang Lu,Basanta Roul,Sujit Das,Hua Deng,Kirill I. Zaytsev,Li-Guo Zhu,Qiwu Shi
The dynamic control of terahertz (THz) wave transmission on flexible functional materials is a fundamental building block for wearable electronics and sensors in the THz range. However, achieving high-efficiency THz modulation and low insertion loss is a great challenge while maintaining the excellent flexibility and stretchability of the materials. Herein, we report a Ti3C2Tx MXene/waterborne polyurethane (WPU) membrane prepared by a vacuum-assisted filtration method, which exhibits excellent THz modulation properties across stretching. The hydrophilic Ti3C2Tx MXene and WPU enable the uniform 3D distribution of Ti3C2Tx MXene in the WPU matrix. Particularly, the stretchability with the maximum strain of the membranes can reach 200%, accompanied by dynamic tuning of THz transmittance for more than 90% and an insertion loss as low as −4.87 dB. The giant THz modulation continuously decreases with MXene content per unit area, accompanied by a lower density of the MXene interface and diminished THz absorption during stretching. Such a design opens a pathway for achieving flexible THz modulators with a high modulation depth and low insertion loss, which would be used for THz flexible and wearable devices.
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Nanomaterials
·
2022
·Vol. 12
·期 24
·4464
·
IF 5.719
Baohui Zhang,Chong Li,Min Li,Chen Fu,Ran Tao,Honglang Li,Jingting Luo
Nitrogen dioxide is one origin of air pollution from fossil fuels with the potential to cause great harm to human health in low concentrations. Therefore, low-cost, low-power-consumption sensors for low-concentration NO2detection are essential. Herein, heterojunction by SnO2quantum wires, a traditional metal oxide NO2sensing material, and Ti3C2TxMXene, a novel type of 2D layered material, was synthesized using a simple solvothermal method for enhancing gas-sensing performance and reducing operating temperature. The operating temperature was reduced to 80 °C, with a best performance of 27.8 and a fast response and recovery time (11 s and 23 s, respectively). The SnO2and Ti3C2TxMXene composite exhibits high speed and low detection limit due to the construction of the heterojunction with high conductive Ti3C2TxMXene. The selectivity and stability of gas sensors are carried out. This could enable the realization of fast response, high-sensitivity, and selective NO2sensing under low operating temperatures.Keywords:Ti3C2TxMXene;SnO2;gas sensor;NO2;nanocomposite
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SYNTHETIC METALS
·
2022
·
IF 4
Yanhua Lei,Mengchao Ding,Haikun Wu,Di Yin,Yang Li,Bochen Jiang,Kai Sun,Yuliang Zhang,Hailiang Du
In this work, the layered Ti 3 C 2 T x MXene were coated with polypyrrole particles by an in-situ polymerization method, and their electromagnetic wave absorption performance were systematically studied. The MXene/PPy composites presented an excellent electromagnetic wave absorption performance, the strongest reflection loss can reach − 68 dB at 2.68 mm. Meanwhile, when the thickness is 2.26 mm, the effective absorption bandwidth can reach 6.56 GHz (from 11.44 to 18 GHz), covering the entire K u band (12–18 GHz). The multiple reflections at the heterogeneous interface, and the synergistic effect between the layered MXene and the conductive polypyrrole network made a combined effect on the optimized absorption. The MXene/PPy composites with a strong electromagnetic wave absorption, wide effective absorption bandwidth and corrosion resistance have a great value in aircraft and vessel fields.
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