CARBON
·
2024
·
IF 10.5
Jinyi Wu,Dan Liu,Yuxuan Sun,Bokun Wei,Kun Dai,Yiqing Sun,Fei Zhang,Chuanbing Li,Jie Xue,Zifu Zhu,Xiaobo Gao,Qingbin Zheng
Solar steam generation (SSG) has been considered as a promising method to produce fresh water from seawater. Due to high light absorption and excellent chemical stability, carbon nanotube (CNT) has been widely used for SSG. However, it is still challenge to simultaneously realize high water evaporation rate and energy efficiency for CNT based solar steam generator. Herein, ultralight anisotropic Ti 3 C 2 T x MXene/carbon nanotube (A-Ti 3 C 2 T x /CNT) aerogels are designed and fabricated for highly efficient SSG. The combination of CNT and Ti 3 C 2 T x MXene endows the hybrid aerogel with high light absorption and effective localized surface plasmon resonance (LSPR), resuting in enhanced light-to-heat conversion efficiency. The porous structure of aerogel leads to multiple scattering and absorption, further contributing to the photothermal conversion process. Moreover, the low thermal conductivity of aerogel structure effectively reduces the heat loss to environment. Through tailoring the anisotropic channel, the A-Ti 3 C 2 T x /CNT hybrid aerogel with average channel size of 80 μm possesses most efficient water transport due to the capillary effect and formation of intermediate water. Therefore, the A-Ti 3 C 2 T x /CNT hybrid aerogel exhibits high average light absorption of 95.68% in the wavelength range of 200–2500 nm, excellent water evaporation rate of 2.10 kg m −2 h −1 under 1 sun irradiation (1 kW m −2 ) with a high energy efficiency of 93.4%, and remarkable durability with 7 days continuous water evaporation. The A-Ti 3 C 2 T x /CNT hybrid aerogel also shows high resistance to salt crystallization due to its high salt transport flux of 1.90 kg m −2 h −1 . This work offers a prospective strategy for constructing highly efficient solar steam generator with stable performance for practical application in seawater desalination.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 46
·21537-21555
·
IF 3.5
Ma Jianfeng,Ma Shaoshuai,Shang Mengtian,Guo Luyao,Liu Cong,Xu Xinhua
In nature, various living organisms such as elephants can perceive and manipulate objects using their trunks. Inspired by biological structures, numerous hydrogel soft robots have been investigated; however, the weak mechanical properties and low conductivity of hydrogels limit their potential applications. Herein, the high-intensity, fast NIR-responsive hydrogel actuator based on bacterial cellulose (BC) as the passive layer and the high conductive hydrogel sensor with BC treated by thermionic source of butyl-3-methylimidazolium chloride (B-BC) as the passive layer are reported. The active layer consists of poly(N-isopropylacrylamide) (PNIPAm), functionalized silica nanoparticles (VSNPs), and 2-isocyanatoethyl methacrylate-modified MXene (M-MXene). Polymer is capable of grafting onto the VSNP surface to generate fast-transport channels for water expulsion, thereby significantly enhancing photoresponsive speed. Leveraging the pre-polymerization solution’s penetration into BC and the strong hydrogen bonding present, the interfacial toughness of the bilayer hydrogel (BC-GEL) reaches 33 N m −1 with a tensile strength of 2.1 MPa. As a proof of concept, BC-GEL is programmed as multidimensional grippers and perceptual actuators for intelligent traffic monitoring. Additionally, B-BC, obtained through in situ molecularization with a thermionic source, exhibits a conductivity of up to 6.74 S m −1 . Owing to the excellent sensing properties, B-BC-GEL can be prepared as somatosensory actuators and multi-appliance sensors. This research offers innovative insights into hydrogel self-sensing actuators for intelligent traffic safety monitoring systems and demonstrates significant potential for applications in human health detection and medical wearable electronic devices.
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高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Juan Cui,Jun Li,Zhengyu Zhang,Tongtong Xu,Zegeng Chen,Zeyang Zhang,Qingxin Meng,Zhongxiang Zhou
Electromagnetic wave absorption performance is strictly dependent on attenuation and impedance matching, which are directly influenced by the ratio of MXene/MAX in the multilayer structured MXene/MAX composites. However, there is still a challenge to achieve collaborative optimization of dielectric loss and impedance matching by precisely regulating the proportional relationship of MXene/MAX. Herein, V-based MXene/MAX heterostructure composites with different V2C/V2AlC ratios were successfully synthesized by rationally controlling the temperature and time of the hydrothermal reaction. Experimental results indicated that V2C-100 °C-1 harvested the balance between reduced impedance matching and enhanced dielectric losses, which was attributed to the mildly enhanced conduction loss and polarization loss. The first principles indicated that abundant electrons migrate from the V atoms of the MXene to the C atoms of the MAX phase. The charge redistributed and accumulated at the interface, exciting the increase in the dielectric loss of V2C-100 °C-1. As a result, the V2C-100 °C-1 heterostructure composite had an excellent electromagnetic absorption effect with a minimum reflection loss of −50.06 dB and a wide effective absorption bandwidth of 4.0 GHz (12.72–16.72 GHz). This work provides a valuable experience for the development of efficient MXene-based microwave absorbing materials.
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·Vol. 49
·期 7
·2889-2897
·
IF 2.5
Yanan Zhu,Yongchang Yang,Shiqiang Li,Chang Zhu,Zegang Qiu,Qianqian Zhu
The development of efficient materials for adsorption desulfurization has attracted much attention for the safety of humans and the ecosystem. Metal–organic frameworks have shown promise in removing organic sulfur compounds in liquid fuels, while another star material – MXene has rarely been applied in this field. In this study, Ti3C2Tx MXene/Cu-MOF composites with different MXene contents (3.3%, 6.7%, and 13.3%) were synthesized via an in situ precipitation method. Characterization showed that the Cu-MOF was successfully coated on the surface of Ti3C2Tx MXene and partially embedded between the MXene nanosheets, restraining the agglomeration of both MXene and the Cu-MOF. The optimal composite-3.3%MXene/Cu-MOF presented the largest surface area of 166.6 m2 g−1. Compared to MXene and Cu-MOF, 3.3%MXene/Cu-MOF exhibited an enhanced adsorption performance for methyl phenyl sulfide in the model fuel with an equilibrium adsorption capacity of 87.4 mg g−1. Furthermore, the effects of adsorption parameters, adsorption kinetics, adsorption isotherms, and the adsorption mechanism, and regenerative performance of 3.3%MXene/Cu-MOF were comprehensively discussed. A pseudo-second order kinetic model and the Langmuir adsorption isotherm were found to better explicate the adsorption behavior on 3.3%MXene/Cu-MOF, which exhibited a theoretical maximum adsorption capacity of 183.9 mg g−1. This work hopes to shed light on the material design for adsorption desulfurization.
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npj Clean Water
·
2024
·Vol. 7
·期 1
·1-10
·
IF 10.4
Li Wanxin,Shu Dawu,An Fangfang,Liu Ruigang,Shan Juchuan,Han Bo,Cao Shaolei
Rapid activation of sodium persulfate (SPS) for the degradation of C.I. Reactive Red 218 (RR218) was achieved using Ti 3 C 2 MXene reduction of trace Fe 3+ . The degradation rate of RR218 reached 97.7% using a mixture containing 3 g L −1 of SPS, 3.35 mg L −1 of Fe 3+ and 60 mg L −1 of MXene stirred at 25 °C for 30 min. The intense reduction of Ti 3 C 2 MXene triggers the Fe 3+ /Fe 2+ cycle thereby accelerating the activation of SPS. When reactive dyes were degraded by Fe 3+ /SPS/MXene process, ·OH played a major role. The dye degradation capacity of the Fe 3+ /SPS/MXene process decreased after 5 cycles of recycling. In addition, the wastewater treated under these conditions resulted in high dyeing efficiencies in reuse experiments. This study not only improves the understanding of the catalytic reaction of MXene but also provides a wastewater treatment and reuse process with low metal consumption and high efficiency.
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CARBON
·
2025
·
IF 11.6
Mingjun Zou,Yixin Zeng,Xinwei Wang,Shujuan Liu,Qian Ye,Feng Zhou
Conventional hydrogels typically exhibit poor mechanical properties, high water loss, and susceptibility to swelling and structural degradation. Nanocomposite hydrogels offer a promising solution, demonstrating considerable potential for marine antifouling applications. Herein, polyethyleneimine (PEI) was successfully grafted onto MXene surfaces via tannic acid-mediated self-assembly polymerization through Schiff-base or Michael addition reactions. The resulting MX-PEIS exhibited effective antibacterial and anti-algal properties. Nanocomposite hydrogels were then synthesized via heat-initiated free radical polymerization. The MX-PEIS/Gel hydrogel demonstrated outstanding antifouling performance, achieving an antimicrobial rate of 95 % and a 99 % enhancement in anti-algal activity compared to the blank hydrogel. This improvement was attributed to the synergistic effects of MX-PEIS nanosheets and the hydrogel's surface hydration, which inhibited biofilm formation by killing, suppressing, and preventing the adhesion of bacterial and microalgal cells. Furthermore, the incorporation of MX-PEIS nanosheets significantly enhanced mechanical properties, increasing tensile stress from 0.07 MPa to 0.16 MPa and tensile strain from 581.2 % to 1022.4 %. Additionally, the modified hydrogel exhibited improved water retention, anti-swelling, and lubrication properties, contributing to greater structural stability and an extended service life.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Liang Ma,Yuxi Yang,Limin Wu,Min Chen
Nanoscale energy harvesting based on the principles of friction electricity and electrostatic induction shows great potential for low-frequency, low-density forms of energy distribution. However, selection of materials for the electrode layer is still mainly limited to metal/metal oxide, necessitating the development of electrode architectures to enable performance breakthroughs and expand application scope. Notably, multiple application scenarios such as building-integrated rainwater energy harvesting through architectural coatings require coating-enabled harvesting technologies and special material choices that directly contribute to reducing dependence on traditional fossil fuels. A flexible coated electrode featuring MXene-graphene oxide (GO) 2D nanostructured self-assembled composites with interlayer-reinforced microsphere-sheet structure has been designed, which exhibits good performance characteristics of a metal-like electrode layer. The droplet electricity generating membranes (DEGM) fabricated from dielectric material polytetrafluoroethylene (PTFE) and coated source electrode (SE) achieves a short-circuit current (I sc ) of 960 μA, a peak power density of 108 W m −2 , and an efficiency of 10.45 %. The development of coated SE provides approaches to surface-coated droplets energy harvesting for green buildings and the deployment of distributed Internet of Things (IoT) systems.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yuchuan Wang,Di Pang,Ying He,Honglin Li,Yan Tang,Lijuan Ye,Hong Zhang,Wanjun Li
Multi-stimulus-responsive actuators demonstrate significant potential in the fields of bionic robots, flexible electronics, and smart sensing. However, their practical applications have been hindered by inadequate environmental stability, limited response modes, and insufficient mechanical durability. This study designs an MXene&PVA/CNT&PVA (MP/CP) bilayer film actuator that achieves high-performance multi-field-coupled actuation through interfacial chemistry modulation and dynamic strain gradient synergy. The actuator demonstrates fast and multimodal responsiveness, achieving a bending deformation of 516° within 0.5 s (with full recovery in 1 s) at 90% relative humidity (RH), reaching an even larger bending angle of 1128° under near-infrared (NIR) light stimulation (200 mW cm − 2 ), while simultaneously exhibiting distinct sensitivity to polar solvents, and maintains exceptional environmental stability and cycling endurance. Capitalizing on these advantages, the MP/CP film enables precise control of smart switches, adaptive curtain operation, and biomimetic motions such as robotic locomotion and butterfly-like multimodal flapping through sequential stimulus regulation. This work provides novel insights for developing multifunctional smart actuators, with broad application prospects in adaptive soft robotics and environmental interactive systems.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Huanhuan Dong,Xiaoyu Ji,Zhao Li,Junxiang Guo,Shan Peng
Viscous oil spills (e.g., petroleum and diesel) in marine environments and domestic oily wastewater pose seriously ecological and public health risks owing to their high viscosity and poor fluidity, making the remediation a very urgent challenge. To address these issues, we designed an inherently hydrophobic MXene/hollow CuCo-MOF (H-CuCo-MOF)@PDMS sponge featuring an instantly photothermal response and a multiscale wrinkled structure. The confined effects of H-CuCo-MOF and MXene synergistically generate an efficient electron transport network, where interfacial charge transfer enhances carrier lifetime, thereby prolonging photothermal conversion efficiency. In Addition, the high specific surface area of H-CuCo-MOF and the layered structure of MXene increase confined adsorption sites while preventing MOF aggregation. Stress mismatch between flexible PDMS and rigid MXene form a highly wrinkled architecture, effectively mitigating MXene stacking. Under 1-sun irradiation, the sponge’s surface temperature quickly reaches ∼80 °C within 20 s, altering surface tension and inducing the Marangoni effect to accelerate oil absorption. Moreover, taking advantages of high match between the coated sponge and the viscous oil, the separation efficiencies are exceeding 95 % for diesel oil and rapeseed oil, and 82.7 % for crude oil. The material also proves superior durability, maintaining stable hydrophobicity after 150 friction cycles, exceptional mechanical recovery (99.2 % after 10 compressions), and notable salt resistance and antibacterial properties.
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高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Junxia Chen,Yuying Yang,Weigang Li,Zhenzhen Yang,Yizhou Wu,Yubai Chen,Qing Zhou
The synthesized FeVO 4 /MXene composite photocatalysts demonstrated exceptional photocatalytic activity in activating PMS, removing 100% of 2,4,6-trichlorophenol (2,4,6-TCP) within 20 minutes. The incorporation of MXene effectively reduced photogenerated electron-hole pairs recombination in FeVO₄, enhancing charge transfer efficiency. Mechanistic studies revealed that synthesized FeVO 4 /MXene generated more •OH and ¹O₂ through the reaction between h⁺ and PMS. Furthermore, the photogenerated electrons (e⁻) facilitated Fe redox cycling within the system. The FeVO 4 /MXene/PMS/Vis system not only achieved efficient separation of photogenerated charge carriers but also reduced the required PMS dosage by 75%. Remarkably, the FeVO₄/MXene composite maintained its structural integrity after five consecutive cycles while retaining 98% of its initial degradation efficiency for 2,4,6-TCP, demonstrating excellent durability and promising application potential.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Xiao Duan,Fusen Lv,Jiaqi Liu,Tie Liu,Shuang Yuan
MXenes exhibit a distinctive two-dimensional (2D) open-layered architecture, characterized by an extensive specific surface area, abundant surface functional groups, and excellent electrical conductivity, rendering them a promising candidate for the anode material in lithium-ion capacitors (LICs). However, the inherent tendency of MXenes towards interlayer restacking and structural degradation severely impedes ion transport kinetics, leading to compromised electrochemical performance. To address this issue, a straightforward hydrothermal synthesis strategy was proposed for fabricating porous Co 3 O 4 nanoneedle/MXene composites via in-situ grown self-assembly. The two-dimensional layered structure, high electrical conductivity, and abundant surface functional groups of MXene enable efficient ion intercalation, while Co 3 O 4 contributes enhanced theoretical capacity and rich oxidation states. These two components form a mutually supportive synergistic effect. This synergy not only shortens the ion/electron transport pathways within the MXene matrix but also mitigates the agglomeration and volume expansion phenomena associated with the Co 3 O 4 nanoneedles. Therefore, the obtained Co 3 O 4 MXene electrode maintained a specific capacity of 632 mA h g −1 after 1000 cycles at a high current density of 1 A g −1 , far exceeding the original MXene electrode. Assembled with activated carbon to form Co 3 O 4 nanoneedles/MXene//AC lithium-ion capacitors (LIC), achieving a high energy density of 254 Wh k g −1 and a maximum power density of 4000 W kg −1 . The excellent performance of the porous and porous Co 3 O 4 nanoneedle/MXene composite reflects its potential as a high-performance anode material for LIC.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Mingjun Zou,Yikun Ji,Bin Liu,Shujuan Liu,Qian Ye,Feng Zhou
Hydrogels exhibit great potential in marine antifouling applications due to their ability to form a surface hydration layer that resists microbial adhesion. However, their practical application is often hindered by poor mechanical properties and limited antifouling performance. To address these challenges, nanomaterials have been employed to enhance hydrogel performance. Herein, we functionalized MXene nanosheets by grafting methacryloxyethyltrimethyl ammonium chloride (METAC) microgels, followed by electrostatic adsorption of sodium lignosulfonate (SLS), resulting in functionalized MXene nanosheets with enhanced antibacterial and antifouling properties. These nanosheets were then embedded within hydrogel matrix to form nanocomposite hydrogels. The reinforced internal crosslinking network significantly improved the mechanical performance, increasing tensile stress from 55 KPa to 167 KPa and tensile strain from 636 % to 971 %. The MXene-METAC-SLS/Gel also exhibited excellent antifouling performance, achieving antibacterial rates of 91.0 % and 93.1 % against Staphylococcus aureus and Escherichia coli , along with algal removal rates of 83.5 % and 85.1 % for Dunaliella and P orphyridium , respectively. The incorporation of functionalized nanosheets not only enhanced antimicrobial capability but also strengthened the surface hydration layer, further resisting microbial adhesion. This study expands the potential applications of nanocomposite hydrogels in marine antifouling coatings.
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高影响因子
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