ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yangkai Xiong,Zhiqiang Fang,Jipeng Li,Zheng Li,Guoqing Wang
Biological fouling seriously jeopardizes the development of the marine industry. Although hydrogels, as a kind of state-of-the-art antifouling material, have received wide attention, their mechanical strength is still relatively weak, and the synergistic antifouling method is comparatively single, thus limiting the performance of hydrogels. Here, a zwitterionic sulfobetaine methacrylate (SBMA)-acrylamide (AM)/sodium alginate (SA) double-network (DN) antifouling hydrogel with superb antifouling ability and outstanding mechanical properties was prepared by grafting MXene/Ag (M/Ag) and the powerful biocide polyhexamethylene biguanide (PHMB). The prepared M/Ag has a great bactericidal effect (99.9%), and the DN-M/Ag-PHMB hydrogel demonstrates high tensile strength (5.8 MPa), remarkable antiprotein adhesion, bactericidal, and antialgal adhesion. This work proves that the DN-M/Ag-PHMB hydrogel has an exceptional antifouling ability in all three stages of biofouling formation and has a promising future as a new type of green marine antifouling material.
研究领域:
材料科学
·
生物学
·
海洋科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
·
IF 8.7
Ting-yu Zhu,Wan-jun Jiang,Xin Shi,De-xiang Sun,Jing-hui Yang,Xiao-dong Qi,Yong Wang
Developing multifunctional phase change materials (PCMs) with room-temperature flexibility, moderate photothermal therapy, and antibacterial activity still remains an enormous challenge. In this study, phase change hydrated salts (Na 2 SO 4 ·10H 2 O, SSD) were packaged into a sodium alginate (SA) and polyacrylamide (PAM) double-network hydrogel with the addition of MXene@Ag (MA) nanosheets. The PAM/SA/SSD/MA hydrogels showed high enthalpy (176.0 J/g) and high size retention. Besides, the hydrogel-based sensor exhibited a wide strain sensing range, good sensitivity, and fatigue resistance (800 tensile cycles) due to the robust double-network and electrical MXene@Ag nanosheets, which can monitor subtle and intense human motion. More importantly, benefiting from the synergetic photothermal effect of MXene and Ag, the hydrogel exhibited good photo-thermal energy storage and antibacterial performances, which can be applied in moderate photo-thermal therapy to relieve pain. This research provides a potential avenue for multifunctional phase change hydrogels toward wearable thermal management and human healthcare devices.
研究领域:
材料科学
·
生物医学工程
·
智能医疗
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Guodong Zou,Zhiwei Zhang,Jianxin Guo,Baozhong Liu,Qingrui Zhang,Carlos Fernandez,Qiuming Peng
A new MXene/Ag composite was synthesized by direct reduction of a AgNO3 aqueous solution in the presence of MXene (Ti3C2(OH)0.8F1.2). The as-received MXene/Ag composite can be deemed as an excellent anode material for lithium-ion batteries, exhibiting an extraordinary long cycle lifetime with a large capacity at high charge–discharge rates. The results show that Ag self-reduction in MXene solution is related to the existence of low-valence Ti. Reversible capacities of 310 mAh·g–1 at 1 C (theoretical value being ∼320 mAh·g–1), 260 mAh·g–1 at 10 C, and 150 mAh·g–1 at 50 C were achieved. Remarkably, the composite withstands more than 5000 cycles without capacity decay at 1–50 C. The main reasons for the long cycle life with high capacity are relevant to the reduced interface resistance and the occurrence of Ti(II) to Ti(III) during the cycle process.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yingjie Niu,Ziqi Wang,Yuan Li,Bichan Huang,Teng Ma,Xuanbo Jiang,Hui Cheng,Kaifu Zhang,Chenglin Yi
Lightweight and ultra-thin conformal shielding films can be directly integrated on the surfaces of complex structures without occupying additional three-dimensional (3D) space, holding considerable promise for protecting sensitive precision electronic equipment. Here, titanium carbide/silver (MXene/Ag) nanocomposites were synthesized through electrostatic adsorption and in-situ self-reduction, and subsequently combined with Ag ink to create a MXene/Ag-Ag hybrid ink optimized for aerosol jet printing (AJP). The introduce of ethylene glycol based solvent system largely prevents the aggregation of aerosolized hybrid ink particles and reduce the overspray as well. This hybrid ink exhibited a printing resolution of ∼ 10 μm and excellent electrical stability, with only a 4.8 % increase in resistance of the printed trace after 1000 bending cycles. The internal pores and heterogeneous interfaces of MXene/Ag formed after sintering process significantly enhanced the electromagnetic wave absorption of the film. The specific electromagnetic interference (EMI) shielding effectiveness (SE) (SSE/t, defined as the ratio of EMI SE to the density and thickness) of the MXene/Ag-Ag film reaches 52591.4 dB·cm 2 /g at a thickness of merely 500 nm with only 0.9 mg weight increment. Simultaneously, the successful fabrication of high-quality conformal films on various complex substrates showcases the advanced manufacturing capabilities of AJP. Moreover, the utilization of the shielding film in practical applications, including electric field shielding, wireless charging, and near-field communication (NFC) interruption, highlights the potential of AJP technology for the fabrication of integrated conformal EMI shielding electronics with custom-designed structures.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Wei Zhong,Feng Gao,Jin Zou,Shuwu Liu,Mingfang Li,Yansha Gao,Yongfang Yu,Xiaoqiang Wang,Limin Lu
In this paper, a novel ratiometric electrochemical sensor for carbendazim (CBZ) detection was constructed by a composite of MXene@Ag nanoclusters and amino-functionalized multi-walled carbon nanotubes (MXene@AgNCs/NH 2 -MWCNTs). The Ag nanoclusters (AgNCs) embedded in the MXene not only could inhibit the aggregation of MXene flakes and enhance the electrocatalytic ability, but also serve as an internal reference probe for the ratiometric electrochemical detection. Moreover, the introduction of NH 2 -MWCNTs can further improve the electrochemical signals of CBZ and Ag, resulting in the enhanced signal amplification and higher sensitivity. Based on these characteristics of the MXene@AgNCs/NH 2 -MWCNTs composite, the proposed sensor exhibits a favorable linear relationship between I CBZ /I AgNCs and the concentration of CBZ ranging from 0.3 nM to 10 μM and a low limit of detection of 0.1 nM. Moreover, the proposed ratiometric electrochemical sensing platform also demonstrates high selectivity, good reproducibility, secular stability, and satisfactory applicability in vegetable samples.
研究领域:
分析化学
·
食品安全检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nuclear Science and Techniques
·
2025
·Vol. 36
·期 2
·1-13
·
IF 3.8
Xu Si-Yi,Li Dan-Yi,Wang Wen-Rui,Lin Lin,Sun Ying,Li Ji-Hao,Li Lin-Fan
High-performance MXene-based polymer nanocomposites are well-suited for various industrial applications owing to their excellent mechanical, thermal, and other properties. However, the fabrication of flame-retardant polymer/MXene nanocomposites remains challenging owing to the limited flame-retardant properties of MXene itself. This study prepared a novel MXene@Ag@PA hybrid material via radiation modification and complexation reaction. This material was used to further enhance the key properties of ethylene-vinyl acetate (EVA), such as its mechanical properties, thermal conductivity, flame retardancy, and electromagnetic shielding. The addition of two parts of this hybrid material increased the thermal conductivity of EVA by 44.2% and reduced its peak exothermic rate during combustion by 30.1% compared with pure EVA. The material also significantly reduced smoke production and increased the residue content. In the X-band, the electromagnetic shielding effectiveness of the EVA composites reached 20 dB. Moreover, the MXene@Ag@PA hybrid material could be used to further enhance the mechanical properties of EVA composites under electron-beam irradiation. Thus, this study contributes to the development of MXene-based EVA advanced materials that are fire-safe, have high strength, and exhibit good electromagnetic shielding performance for various applications.
研究领域:
材料科学
·
高分子化学
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火灾安全工程
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2024
·
IF 6.3
Huijie Qin,Tongwei Zhang,Lihong Bao,Bo Dang,Jianxi Li
In this study, MXene@Ag@PA hybrids were synthesized using radiation methods and chelation, aiming to enhance the key properties of EVA/MH composites, particularly their flame retardancy. The test results demonstrated that the addition of MXene@Ag@PA hybrids effectively reduced the amount of heat and smoke released during the combustion process of EVA composites. When 2 parts of MXene@Ag@PA hybrids were added, the peak heat release rate (pHRR) of the EVA/MH/2.0MXene@Ag@PA composite was reduced to 233 kW/m², representing a decrease of 78.5% and 63.3% compared to pure EVA and EVA/MH composites, respectively. Additionally, the time to reach the peak heat release rate was delayed to 300–400 s. Moreover, the MXene@Ag@PA hybrids further reduced the total smoke production (TSP) of the EVA composites to 3 m², which is 50% and 38.7% lower than that of pure EVA and EVA/MH composites, respectively. Besides providing significant flame-retardant enhancement to EVA/MH composites, the MXene@Ag@PA hybrids also acted as a radiation sensitizer. At an irradiation dose of 100 kGy, the addition of MXene@Ag@PA hybrids enhanced the cross-linking effect of EVA composites, thereby strengthening their mechanical properties.
研究领域:
材料科学
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聚合物工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Busaremu Wulayimujiang,Fang Guo,Qianyu Ma,Yong Wen,Yang Yang,Hongyan Huang,Quanpei Xie,Meng Shen,Jinxin Liu,Si Cheng
Even though membrane separation materials have worked very well for purifying dyestuff wastewater, the short residence time and high pollutant flow rates in the membrane, which can lead to incomplete or insufficient photodegradation, make it currently difficult to separate and photodegrade large-scale or highly concentrated dyestuff wastewater in one step. Herein, we propose an ‘all-in-one’ 3D nanofibrous aerogel architecture (aPAN/MXene@Ag–Ag2S), which can achieve efficient purification of high-concentration dyeing effluents under natural sunlight via two methods: filtration or solar interfacial evaporation. Ag–Ag2S nanoparticles with two different structures are reduced on Ti3C2Tx nanosheets through a UV light-induced in situ reaction, and they function as effective photocatalysts with excellent photothermal ability for solar interfacial evaporation. The special combination of Ag–Ag2S, MXene, and aPAN nanofibers in the aPAN/MXene@Ag–Ag2S aerogels achieved 95% separation and 99.99% photocatalytic degradation efficiencies for oil/water emulsions with methylene blue at a high concentration of 1000 mg L−1, which far exceeds those of recently reported MXene-based catalysts. In particular, wastewater from industrial dyeing could be treated to clean water under natural sunlight. In addition, the evaporation rates of the aPAN/MXene@Ag–Ag2S aerogel for seawater and textile dye wastewater respectively reach 2.69 kg m−2 h−1 and 2.44 kg m−2 h−1 and almost 100% degradation efficiency is achieved. Both the filtered fresh water and the evaporated water produced by solar evaporation meet the requirements of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant or the World Health Organization (WHO) and the US Environmental Protection Agency (EPA) standards for drinking water, respectively.
研究领域:
环境科学
·
材料科学
·
水处理
·
光催化
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Qian Wang,Ze Zhang,Jiang Yin,Lingyi Shen,Lingli Zhu,Carl Redshaw,Qilong Zhang
Wound infections caused by pathogenic bacteria can cause delayed wound healing and even threaten the life of patients. Drug resistance and effectiveness with regard to traditional wound dressings have become urgent issues which need to be addressed. The antibacterial effect of hydrogels, as novel wound dressings, is through contact-active antibacterial was limited by the contact area and time. In this paper, MXene (a 2D carbonitride) has been employed as the substrate and via the in-situ reduction of silver nanoparticles and the polymerization of dopamine on its surface the photothermal agent MXene-Ag-PDA was obtained. This was then introduced into the hydrogel matrix via the block cationic polymer (AM-VBIMBr-AAPBA), oxidized sodium alginate (OSA) and quaternary ammonium chitosan (HACC). Multifunctional composite hydrogels (PNVAO/M-A-P) possessing photo-thermal effects and inherent antibacterial activity were obtained after crosslinking, and were employed as medical materials to promote the healing of infected wounds. The cationic groups contained in the PNVAO/M-A-P were capable of capturing and killing bacteria by electrostatic interactions, and produced local heat killing adsorption and residual bacteria in the surrounding solution under NIR irradiation, thereby shortening the antibacterial cycle and improving the sterilization efficiency. Meanwhile, the introduction of glycerin in the hydrogel improved its anti-freezing and anti-drying properties, enabling the hydrogel to function stably under extreme environments. PNVAO/M-A-P composite hydrogels based on chemical and dynamic crosslinking exhibited the desired mechanical strength, and via their self-healing ability can adapt to dynamic wounds. The hydrogel dressing showed excellent anti-freezing and anti-drying properties, high bovine serum albumin (BSA) adsorption capacity (308.17 mg·g −1 ), good biocompatibility (the cell viability exceeded 100 % after 48 h of incubation), antioxidant properties and excellent antibacterial activity (the sterilization rate can reach 99.9 %). Furthermore, the hydrogel was applied to infected wound treatment and was able to control the wound infection, reduce pro-inflammatory factor production, promote collagen deposition and neovascularization formation, and thus promote wound healing. Therefore, multifunctional composite hydrogels with synergistic antibacterial effects can be used as an novel dressing for the treatment of bacterial infected wounds.
研究领域:
生物材料学
·
医学
·
纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zhu Liu,Pengshu Yi,Longli Ma,Yuhang Yuan,Yuan Wang,Chuming Ye,Mingxin Ye,Jianfeng Shen
The practical application of aqueous zinc-ion batteries (AZBs) as attractive energy storage devices is severely hampered by the uncontrollable zinc dendrite growth on the metal anode. Here, a lightweight and flexible free-standing membrane of MXene/Ag nanowires (AgNWs) was synthesized via vacuum filtration to support the zinc anode. The 3D cross-linked network structure provides ample space for densely packed zinc electrodeposition. Zincophilic AgNWs that exhibit a low lattice plane mismatch with zinc lower the nucleation barrier for zinc, inducing uniform nucleation and lateral growth of zinc on the substrate. In addition, the 3D network framework effectively reduces the local current density and area capacity of the anode, creating a uniform electric field that is not conducive to zinc dendrite formation. Consequently, the highly reversible Zn@MXene/AgNWs composite anode exhibits long cycle stability of 1000 h at 2.0 mA cm −2 , 1.0 mAh cm −2 in the symmetrical battery. The full battery assembled with a sodium vanadate (NVO) cathode demonstrates excellent rate performance and long cycle life (2000 cycles at 5.0 A/g). The design of zincophilic hosts with high lattice plane matching provides a promising strategy for realizing dendrite-free zinc anodes for AZBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2024
·Vol. 57
·期 32
·325302
·
IF 3.1
Siyi Xu,Danyi Li,Wenrui Wang,Lin Lin,Ying Sun,Jihao Li,Linfan Li
A large amount of toxic smoke and heat generated by the combustion of ethylene vinyl acetate copolymer (EVA) poses a significant threat to human fire escape evacuation. This work aims to use γ-ray to prepare e-MXene@Ag hybrid flame-retardant materials by the method of in-situ reduction, and EVA composites are prepared by melt blending to reduce the smoke and toxic gases produced during combustion significantly. Compared with pure EVA, the total heat release, total smoke release, and the production rate of CO and CO2 produced by the combustion of EVA composite with 1 wt% e-MXene@Ag1.0 decreased by 30.3%, 33.3%, 18.2%, and 20.1% respectively. The fire hazard reduction of EVA composite materials was due to the physical barrier, catalytic carbonization and adsorption of the e-MXene@Ag1.0 hybrid. In addition, e-MXene@Ag1.0 can also further increase the mechanical properties of EVA composites due to its own 'multi-contact point limit structure'.
研究领域:
材料科学
·
燃烧学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Chao Ji,Ying Wang,Zhenqiang Ye,Liyuan Tan,Dasha Mao,Wenguang Zhao,Xiaoliang Zeng,Changzeng Yan,Rong Sun,Dae Joon Kang,Jianbin Xu,Ching-Ping Wong
High-performance thermal management materials are essential in miniaturized, highly integrated, and high-power modern electronics for heat dissipation. In this context, the large interface thermal resistance (ITR) that occurs between fillers and the organic matrix in polymer-based nanocomposites greatly limits their thermal conductive performance. Herein, through-plane direction aligned three-dimensional (3D) MXene/silver (Ag) aerogels are designed as heat transferring skeletons for epoxy nanocomposites. Ag nanoparticles (NPs) were in situ decorated on exfoliated MXene nanosheets to ensure good contact, and subsequent welding of ice-templated MXene/Ag nanofillers at low temperature of ∼200 °C reduced contact resistance between individual MXene sheets. Monte Carlo simulations suggest that thermal interficial resistance (R0) of the MXene/Ag–epoxy nanocomposite was 4.5 × 10–7 m2 W–1 K–1, which was less than that of the MXene–epoxy nanocomposite (Rc = 5.2 × 10–7 m2 W–1 K–1). Furthermore, a large-scale atomic/molecular massively parallel simulator was employed to calculate the interfacial resistance. It was found that RMXene = 2.4 × 10–9 m2 K W–1, and RMXene-Ag = 2.0 ×10–9 m2 K W–1, respectively, indicating that the Ag NP enhanced the interfacial heat transport. At a relatively low loading of 15.1 vol %, through-plane thermal conductivity reached a value as high as 2.65 W m–1 K–1, which is 1225 % higher than that of pure epoxy resin. Furthermore, MXene/Ag–epoxy nanocomposite film exhibits an impressive thermal conductive property when applied on a Millet 8 and Dell computer for heat dissipation.
研究领域:
材料科学
·
热管理技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）