APPLIED SURFACE SCIENCE
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2023
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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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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Junhao Lu,Jun Wang,Yaojin Duan,Lan Ma,Dongfeng Zhai,Ihar Razanau,Kunming Pan,Yaru Li,Saifei Pan
Designing transition metal phosphides (TMPs) with remarkable performance and high stability for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) plays a significant role in the commercial application of water splitting. Bimetallic phosphide (NiCoP) exhibits favorable electrocatalytic activity; however, it still suffers from intrinsic limitations such as insufficient intrinsic activity, inferior electrical conductivity, and a tendency toward particle agglomeration. To address these issues, a CeO 2 modified NiCoP particle catalyst (referred to as CeO 2 -NiCoP/Ti 3 C 2 T x ) loaded on a few layers of Ti 3 C 2 Tx MXene was synthesized using an HCl/LiF etching and hydrothermal phosphorization method. The CeO 2 -NiCoP/Ti 3 C 2 T x catalyst exhibits significantly lower overpotentials (287 mV for OER and 147 mV for HER) to achieve a current density of 10 mA cm −2 . Moreover, the catalyst demonstrates outstanding durability, with 93.6% and 84.6% retention of its activity after 27 h of OER and 25 h of HER, respectively.The favorable performance of CeO 2 -NiCoP/Ti 3 C 2 T x in HER and OER can be attributed to several advantages. Few-layer Ti 3 C 2 T x enhances the electrical conductivity of the material, and its large specific surface area prevents particle agglomeration, thus improving the material stability.The -O/-OH functional groups on the surface of Ti 3 C 2 T x endow the material with strong hydrophilicity, which facilitates the full contact between active sites and the electrolyte and accelerates the mass transfer and charge transfer kinetics. CeO 2 effectively optimizes the adsorption energy of NiCoP toward hydrogen intermediates by regulating the microelectronic structure of NiCoP, thereby boosting the HER kinetics.
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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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Polymers
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2026
·Vol. 18
·期 17
·2078
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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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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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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
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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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CHEMOSPHERE
·
2022
·
IF 8.943
Roham Ghanbari,Ehsan Nazarzadeh Zare,Ana Cláudia Paiva-Santos,Navid Rabiee
Nowadays, the evolution of two-dimensional materials like transition metal carbides (MXene) prepares a novel path to surpass the “trade-off” between the membrane permeation and rejection rates. Based on water swelling and oxidation vulnerability, MXene membranes showed vivid defects such as inadequate stability, detrimental adsorption, and haphazardly stacked nanosheets. Here, we prepared Ti 3 C 2 Tx MXene@metal–organic frameworks nanosheets from aminated metal-organic framework-101 (NH 2 -MIL-101(Al)) via the in-situ growth method and incorporated them into the thin-film polymer to acquire desirable MXene nanosheets with tailor-made structures. The earned modified thin-film nanocomposite membrane showed high salt rejection for Na 2 SO 4 (98.6 ± 0.5%), MgSO 4 (96.9 ± 0.7%), MgCl 2 (84.5 ± 0.8%), and NaCl (82.5 ± 0.8%), and also showed an improved permeation rate by three times (17.1 ± 0.2 L m −2 . h −1 . bar −1 ). Concurrently, the rejection rate of five different types of heavy metal ions (Ni 2+ , Cd 2+ , Mn 2+ , Cu 2+ , and Zn 2+ ) was tested and denoted more than a 95.2 ± 0.5% rejection rate for all of them, notably high for Mn 2+ (97.6 ± 0.4%). After modification, the flux recovery rate was as high as 95.3 ± 0.4%, denoting more than 30% improvement; besides, anti-compactness features enhanced by nearly 34 ± 0.7%. The long-term water permeation kept 91.5 ± 0.9% of its initial rate indicating almost 40 ± 0.8% enhancement. In addition, the rejection performance of Na 2 SO 4 for the optimized membrane was more than 97% even after two weeks.
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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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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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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Liping Zhang,Xiangchuan Zhao,Zhaoyun Chu,Qing Wang,Yue Cao,Jiao Li,Wu Lei,Jun Cao,Weimeng Si
Rational design of transition metal catalysts with robust and durable electrocatalytic activity for hydrogen evolution reactions (HER) is extremely important for renewable energy conversion and storage, as well as water splitting. Heteroatom doping has emerged as a feasible strategy for enhancing electrocatalytic activity. Here, cobalt nanoparticles (Co-NPs) were coated with nitrogen-doped carbon nanotubes (NCNTs) prepared via an in situ growth on accordion-like Ti 3 C 2 T x -MXene (Co-NCNT/Ti 3 C 2 T x ). Such an intriguing structure showed great features: abundant anchoring sites for NCNT in situ growth, intimate integration of Co-NPs and NCNTs, high-speed electron transfer between 1D NCNTs and 2D Ti 3 C 2 T x -MXenes, and a large number of effective catalytic active sites. This Co-NCNT/Ti 3 C 2 T x hybrid catalyst was demonstrated to possess excellent HER performance with low overpotential ( η 10 , 190 mV), small Tafel slope (78.4 mV dec −1 ), large electrochemically active surface area, and good long-term stability, thus outperforming many reported electrocatalysts . The present strategy provided a facile route for the design of transition metal HER catalysts with NCNT and MXene .
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MATERIALS & DESIGN
·
2022
·
IF 9.417
Ningmin Duan,Zhenyu Shi,Zhaohui Wang,Bin Zou,Chengpeng Zhang,Jilai Wang,Jianren Xi,Xiaoshuai Zhang,Xianzhi Zhang,Guilong Wang
It is a challenge to design Ti 3 C 2 T x MXene-based electromagnetic interference (EMI) shielding composites with excellent mechanical properties. Herein, a highly robust, flexible and durable Ti 3 C 2 T x MXene/carbon fiber fabric/thermoplastic polyurethanes (Ti 3 C 2 T x MXene/CFf/TPU) composite was fabricated through simple electrohydrodynamic atomization deposition, layer-by-layer stacking and hot pressing technology. The synergistic strengthening effect of van der Waals forces and covalent bonds can improve the tensile strength of the composite up to170.2 MPa, which is far greater than that of other MXene-based composites previously reported. In addition, the EMI shielding performance of the Ti 3 C 2 T x MXene/CFf/TPU composite also improved with increasing MXene mass fraction, reaching 40.4 dB, which can be attributed to the dielectric loss provided by conductive fillers and the enhanced absorption within the sandwich structure. More interestingly, the composite retained excellent resistance stability, EMI-SE stability and flexibility, even after multiple bending and releasing cycles. This work provides a facile and environmentally-friendly method for preparing composites with excellent EMI shielding properties and mechanical properties, which may provide more possibilities for applications in intelligent wear and electronic wireless communication equipment.
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