APPLIED ENERGY
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2024
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IF 10.1
Miao Sun,Yanan Wang,Jaka Sunarso,Xiuxia Meng,Weimin Zhang,Jun Cao,Naitao Yang
Layered nickel‑cobalt double hydroxide (NiCo-LDH) with a high theoretical charge storage capacity has great potential to be used as a supercapacitor (SC) electrode. However, its low electronic conductivity, low stability, and aggregation tendency has been recognized as the main drawbacks. Herein, solvent-induced interfacial-confined process was used to synthesize an unusual brush-like heterostructure of NiCo-LDH vertically anchored on conductive MXene nanosheets, enabled by the solvent-induced effect of the polar hydroxyl group of ethylene glycol and the limited domain effect of MXene nanosheets. This unique brush-like structure promoted mass transfer and improves charge transport behaviours compared to the pure NiCo-LDHs. The resultant NiCo-LDH@MXene had an ideal larger peak pore size of 3.8 nm and BET specific surface area of 175.13 m 2 g −1 compared to those of NiCo-LDH, which facilitates the exposure of active sites and mass transfer. In three-electrode configuration, NiCo-LDH@MXene provided a significant specific capacity of 1310 F g −1 at a 1 A g −1 current density. At a power density of 699.1 W kg −1 , NiCo-LDH@MXene showcased a substantial energy density of 73.8 Wh kg −1 in a symmetric supercapacitor. At a 6 A g −1 current density, NiCo-LDH@MXene-based SC could retain 92.5% of its capacitance at the end of 10,000 charge and discharge cycles, underscoring its excellent stability in practical application. Electrochemical tests and DFT simulation further revealed enhanced ionic adsorption/transport and electron transport, more enriched active sites, and altered electrical configuration on account of the lower energy barrier for NiCo-LDH@MXene relative to NiCo-LDH. The synthesis route and the insights reported here pave a way toward advanced electrode design and development.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Guangfa Zhang,Yuekang Zhang,Jingxian Jiang
Given the ever-growing global water resource crisis, exploiting multifunctional materials featuring with high interfacial solar steam generation efficiency and good purification capability to achieving seawater desalination and wastewater treatment simultaneously are highly desired, yet it still remains a huge challenge to date. Herein, robust and multifunctional MXene/rGO (MRGA) and polydopamine & chitosan @ MRGA (CS&PDA@MRGA, CPM) three-dimensional composite aerogels with distinct interconnected cellular architecture were developed via a facile ice template-assisted chemical reduction self-assembly technology and subsequent sequential deposition modification. Due to the favorable graphene oxide-assisted assembly behavior, the resultant aerogels displayed a desirable mechanical robustness along with an excellent lightweight property. Benefiting from the strong electrostatic interaction deriving from aerogel surface moieties and dye molecules, MRGA-12 exhibited a prominent adsorption capability towards various dyes and achieved a superb adsorption capacity of up to 396.05 mg/g for malachite green (MG). Moreover, by virtue of the synergistic effect between the intentionally regulated low reduction degree of rGO and the integration of PDA and CS, CPM-12 achieved a dramatically reduced evaporation enthalpy of water from 2256 to 1617.18 J/g. Accordingly, this distinct feature resulted in an extraordinary solar-driven interfacial evaporation performance with a remarkable evaporation rate of 1.86 kg/m 2 /h and a high evaporation efficiency of 83.28 % under 1 sun illumination. Therefore, together with the terrific oil/water separation capability, these novel MXene-based aerogels hold a great potential for high-performance solar-driven interfacial evaporation and wastewater treatment.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Linlin Zhou,Chao Duan,Hanbin Liu,Zhigang Jia,Haixia Zhang,Xiaoqin Han,Lei Dai,Shun Yu
The conversion of mechanical energy into electrical energy by triboelectric nanogenerators (TENG) has attracted attention in recent years, particularly in the field of wearable sensor. In this work, TEMPO-oxidized cellulose nanofibers (TOCNF) with carboxylate groups were compounded with MXene to serve as both the negative friction layer and the electrode in assembling a TENG with nylon. The synergistic effect between TOCNF and MXene was analyzed to disclose its influence on the performance of the as-prepared TENG. The MXene/TOCNF composite film, containing 50 wt% MXene, exhibited the best performance among all specimens, and the assembled TENG demonstrated excellent performance with an open-circuit voltage of 210 V, a short-circuit current of 0.84 μA, and a transferred charge of 8.6 nC. The excellent output performance might be attributed to the presence of carboxylate and F-containing groups in the composite film. This flexible TENG also functioned as a self-powered sensor, generating sensitive and stable signals in response to human motion and writing. This work verifies the simultaneous use of robust and flexible nanocellulose/MXene composite films as both the friction layer and electrode, which could spur the development of TENGs using sustainable and abundant cellulosic materials.
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PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2024
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IF 6
Shuyue Xiong,Zijian Wu,Fang Li,Pei Zhao,Haitao Li,Huanxin Bao,Xu Yang
A self-assembled sensing interface based on Ti 3 C 2 MXene functionalized by aptamer had been successfully constructed in this work, which fully utilizes the electrical properties of Ti 3 C 2 MXene and the specific recognition ability of the aptamer. Subsequently, we studied the performance of the sensing interface using two antibiotic residues as examples. Under the optimal conditions, the sensing interface showed a linear range of 100 fM–1 μM and a limit of detection of 1 fM to detect kanamycin and tetracycline, furthermore the recovery rates were 97.15%–103.00% and 99.559%–106.36%, respectively. In addition, the sensing behaviors of aptamers specific recognition of target can be perceived by the interface, thereby exhibiting different electrical responses. Therefore, the self-assembled sensing interface not only provided a new avenue for the development of ultrasensitive technology in the food analysis field but also for investigating aptamer configurational transformations.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Wenwei Huang,Jiayi Zhou,Yan Zhang,Yining Sun,Dongye Yang,Jianguo Tang,Mikhail Artemyev,Jun Li
Soft actuators are limited by single-mode driving technology, which poses challenges in dealing with complex and multidimensional movements. In this study, a multiresponsive soft actuator was fabricated by integrating a microwrinkling structure into an MXene-based film, enabling programmable motions. To achieve this, we introduced n-hexane into the film preparation process and utilized its rapid volatilization to accelerate the shrinkage difference between the film and the substrate. This resulted in anisotropic folding and excellent mechanical properties. Due to the remarkable moisture absorption and excellent toughness of MXene-based films, it exhibits rapid actuation in response to moisture gradients and light stimuli with large bending deformation, fast actuation speed, as well as excellent stability and durability. The anisotropic expansion and mechanical properties of the film enable it to have capability of three-dimensional shape-programmable configuration control. Furthermore, taking advantage of the exceptional photothermal properties of MXene-based films, we developed light-driven actuators that utilize the Marangoni effect for propulsion on the water surface, enabling programmable navigational control. Such a soft actuator has a broad applications prospect in the fields of biomimetic botanical models, terrestrial crawlers, and aquatic surface transport devices.
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POLYMER
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2024
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IF 4.1
Fan Zhang,Meng-hang Gao,De-xiang Sun,Nan Zhang,Jing-hui Yang,Xiao-dong Qi,Yong Wang
Utilizing biomass to create eco-friendly dielectric materials satisfies the criteria for sustainable development in terms of both environmental protection and economic growth, but the relatively low energy storage density is far below the application requirements. Here, regenerated cellulose/MXene (RC/M) composite films were manufactured, and a glutaraldehyde (GA)-assisted crosslinking was proposed to further tailor the microstructure and performances of the RC/M composite films. The results suggested that likened to the original RC/M composite films without crosslinking, the crosslinked composite films (CRC/M) exhibited more integrated structure and fewer defects, apparently reduced dielectric loss and largely enhanced breakdown strength. Consequently, at 288.61 MV/m with MXene concentration of 1 wt%, the energy storage density achieved to 2.41 J/cm 3 , which was around 6.34 and 1.13 times those of the neat RC film (0.38 J/cm 3 ) and pure CRC film (2.12 J/cm 3 ), respectively. Crosslinking reaction consumed the polar groups of MXene and cellulose matrix, leading to the great reduction of hydrophilicity of the composites, which reduced the water adsorption ability, facilitating the improvement of MXene stability. The effects of storage mode and time on evolution of dielectric performances were also studied. The good comprehensive properties endow the CRC/M composite films with potential applications in next generation dielectric capacitors.
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JOURNAL OF POWER SOURCES
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2024
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IF 8.1
Zicong Yang,Yanhui Chen,Yukun Chang,Xiangxian Song,Jinshu Wang,Hongyi Li
In order to enhance the conductivity and catalytic efficiency of non-noble electrocatalyst, an electrocatalysts consisting of ZnCo metallic double oxide with S doping embedded on V 2 C MXene for oxygen evolution reaction (OER) is synthesized. Cobalt serves as the primary active site, while zinc contributes to improve conductivity owing to its high electronegativity. Sulfur doping plays a crucial role in reducing the energy barrier of rate determining step of OER. The V 2 C MXene as a substrate can promote conductivity as well, resulting in synergistic effect. The electrocatalyst exhibits a low overpotential of 240 mV at 10 mA cm −2 in alkaline electrolyte, surpassing that of IrO 2 commercial electrocatalyst. The potential shows only a minimal ∼5 mV day after 72-h stability test at 20 mA cm −2 . The current density at 1.6 V vs RHE is 2 times that of commercial IrO 2 . Both theoretical calculation and experimental result demonstrate the advantage brought by the incorporation of zinc and sulfur. This work introduces a new idea of synergetic effect in non-noble metallic electrocatalysis.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Jincai Yang,Mingzhu Liu,Jin Wu,Tianyi Ma,Yanxuan Li,Yue Zhang,Jingran Sun,Xiaoli Li,Yanjun Fang,Yonghui Wang,Lingchao Cai,Yuan Peng,Zunquan Zhao,Jialei Bai
Antibiotics are emerging hazardous small molecules, requiring urgent need for fast signal-on analytical methods to control antibiotic abuse. Signal-on fluorescence sensing strategies utilizing nanoquenchers and aptamers are fascinating but rarely accomplished on paper-based platforms. Here, a novel multilayer MXene sensing platform was established by leveraging Nb 2 C-MXene as a multilayer nanoquencher and zero-dimensional carbon dots-labeled aptamer (B-CDs@Apt) as a stable and bright recognition probe. The Nb 2 C-MXene has a multilayer nanosheet stack-like structure and efficient mass transfer channels. It can efficiently adsorb abundant B-CDs@Apt probes and quench their fluorescence. Importantly, the Nb 2 C-MXene/B-CDs@Apt system can release the B-CDs@Apt in response to the analyte with high sensitivity, thereby restoring the fluorescent signal. The developed aptasensor achieved sensitive and selective detection of chloramphenicol (CAP) and showed satisfactory anti-interference ability, stability, and practicability. Notably, the multilayer Nb 2 C-MXene/B-CDs@Apt system was successfully transferred to a paper-based sensing platform, with a low-density distribution of multilayer nanoquenchers carrying sufficient aptamer probes for analyte access. In comparison, the monolayer Nb 2 C nanosheets were unable to adsorb enough probes to output analyte-induced signals. The established paper-based analytical device (PAD) showed a LOD of 0.360 ng mL −1 for CAP, which is the first paper-based MXene aptasensor reported for fluorescence detection. By replacing the aptamer and carbon dot, the strategy was further extended to detect another analyte oxytetracycline (OTC), with LODs of 0.399 in tube and 0.867 ng mL −1 on PAD, respectively. Furthermore, concurrent detection of CAP and OTC was achieved using a dual-color PAD, demonstrating the potential to meet multi-target analytical requirements.
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ACS Applied Nano Materials
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2024
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IF 5.3
Chengjun Song,Min Chao,Le Li,Chunjia Luo,Xi Chen,Luke Yan
Ti3C2Tx (MXene) nanosheets have been widely noticed and investigated by researchers as a strategy to enhance the anticorrosive properties of epoxy resin (EP) coatings, but their proclivity to accumulate and poor compatibility with the resin matrix limit their further application. In this paper, MXene was modified using a simple one-pot synthesis with (3-glycidoxypropyl)trimethoxysilane as a surface modifier, and EP composite anticorrosive coatings were prepared using MXene and modified MXene (M-MX) as fillers. Compared with MXene, M-MX has better dispersion in the coating, which can effectively enhance the anticorrosive property of the coating. Among all of the coatings, the composite coating containing 1 wt % M-MX showed the best anticorrosive effect after immersion in a 3.5 wt % NaCl solution for 21 days. The results of salt spray testing and corrosion product analysis indicated that the trend of the corrosion resistance of different coatings was EP < 0.5M-MX < 1MX < 2M-MX < 1M-MX. According to the results of density functional theory and molecular dynamics calculations, all nanosheets were able to block the corrosive medium in the epoxy coatings. Also, M-MX dispersed more uniformly in the composite coatings, which made the system more compact, prolonged the penetration paths of the corrosive medium, slowed down the diffusion of the corrosive medium, and thus provided the coatings with more excellent corrosion resistance properties.
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MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Xinming Nie,Yuanyuan Liu,Xinting Qian,Yunsheng Shang,Luqing Chen,Xinxin Shi,Mengbao Fan,Lu-Lu Qu
A high-performance aldehyde sensor is of great significance for the detection of construction machinery exhaust gas and the analysis of environmental gas. Herein, we developed a novel aerogel SERS substrate of 4-Aminothiophenol (4-ATP) decorated three-dimensional (3D) porous structure using graphene oxide (GO), Au nanoparticles (Au NPs) and MXene as precursors. Benefiting from the synergistic effect of metal conductivity of MXene, the oxygen-enriched surface of GO and the high-density of “hot spots” (Au NPs), the 3D MXene/Au/GO/4-ATP aerogel structure exhibits enhanced capture efficiency of gaseous aldehyde and plasma enhancement for in-situ aldehyde gas detection. More importantly, a hot-blowing assisted SERS detection device was designed for gaseous aldehydes sensing. The SERS detection device responses to gaseous aldehyde molecules in simulated exhaust gas, offering fast detection time, high sensitivity, excellent reproducibility, and distinct selectivity. This work provides a potential strategy for monitoring harmful emissions, and promotes the design of a multi-functional SERS platform for complex gas sensing.
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CELLULOSE
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2025
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IF 4.8
Sun Yanyan,Natsuki Jun,Zhou Wanyu,Zou Lihua,Wang Zhen,Li Bingbing,Gao Yamin,Chu Changliu,Natsuki Toshiaki
Wearable electronics have gained considerable attention in recent years owing to their softness, flexibility, and compatibility with the human body. However, most conventional multifunctional smart textiles are developed by integrating various fibers or fabrics with single functionalities, facing challenges such as high integration complexity and poor stability, and struggling to meet the demands of wearable electronics. In this study, we present a simple and scalable method involving dip-coating and spray-coating to produce multifunctional, wearable, high-performance MXene/CuS/cotton fabrics. Leveraging the conductive networks formed by synergistic MXene/CuS and the porous structure of the fabrics, these MXene/CuS/cotton fabrics demonstrate impressive electromagnetic interference (EMI) shielding effectiveness (51.1 dB at a thickness of 335 μm) and notable Joule heating performance (approximately 60 °C at a voltage of 6 V). Moreover, when pressure is applied, MXene/CuS/cotton fabrics exhibit negative piezoresistivity, high sensitivity (− 18.2 kPa −1 for 1–4 kPa pressures), rapid response and recovery times (0.4 s), along with exceptional long-term durability and stability (over 2000 cycles). These remarkable properties suggest that MXene/CuS/cotton fabrics are highly promising for future applications in human motion detection, EMI shielding, thermal management, and other applications.
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JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Yingbo Li,Jing Ma,Hongjun Lin,Cheng Chen,Saleam Raza,Qianqian Zeng,Xinchun Lu,Liguo Shen
The development of composite membranes utilizing transition metal carbides and nitrides, exemplified by Ti 3 C 2 T x (MXene), has proven efficacious in the treatment of oily wastewater. However, challenges arise from the prolonged and convoluted transport paths within MXene interlayer nanochannels, significantly impeding mass transfer and diminishing membrane permeability. This investigation incorporated porous covalent organic frameworks (COFs) as intercalating agents into two-dimensional (2D) MXene-based membranes to expand the interlayer nanochannels. The resulting MXene@COF-TpBD functional layer polyethersulfone (PES) composite membrane exhibited a distinctive dual superoleophobic surface, concurrently manifesting underwater superoleophobicity and underoil superhydrophobicity (underwater oil contact angle >150°, underoil water contact angle >150°). The membranes exhibited excellent water flux (up to 4092.7 L m −2 h −1 ·bar −1 ), efficient oil-water emulsion separation (up to 1908.4 L m −2 h −1 ·bar −1 , rejection rates >99.78 %), noteworthy fouling resistance and structural stability, outperforming most of existing similar membranes. Furthermore, supported by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, the incorporation of COF-TpBD improved the antifouling characteristics of the composite membrane. This work presents innovative insights into the improvement of 2D MXene membranes and the use of COF-TpBD for the specific remediation of oily wastewater.
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危险品化学品经营许可证（带存储）