ACS Applied Nano Materials
·
2023
·
IF 5.9
Xueqin Zhu,Minjian Yang,Dengfei Mu,Yiyi Gao,Li He,Liqiang Ma
Hydrogen storage in the solid state is considered a key technology for developing commercial applications of hydrogen energy. With the addition of efficient nanocatalysts, magnesium (Mg) is a promising approach for overcoming the threshold for hydrogen storage materials. Mg–Ni–Ti3C2 composites were created in this study by integrating nanoscale nickel (Ni) and Ti3C2Tx MXene nanosheets with Mg particles using a mechanical ball milling process. Compared with incorporating Ni nanoparticles or Ti3C2Tx MXene nanosheets alone, the combination of Ni and Ti3C2Tx MXene enhanced the dehydrogenation performance of magnesium hydride (MgH2). The ideal combination of a rapid hydrogen uptake/release rate and high hydrogen storage capability was achieved by properly controlling the proportion of additives. The prepared Mg–2Ni/Ti3C2 composite possessed superior hydrogen storage properties, releasing 3.96 wt % hydrogen at 300 °C, whereas additive-free Mg released almost no hydrogen under the same conditions. Furthermore, Mg–2Ni/Ti3C2 absorbed 3.16 wt % hydrogen even at 275 °C. The Mg–2Ni/Ti3C2 composite exhibited a dehydrogenation activation energy of 75.0 kJ mol–1, which was 60.4 kJ mol–1 less than that of pristine Mg. After 10 cycles, 96.1% of the hydrogen capacity was retained, exhibiting a superior cycling stability. According to the catalytic mechanism study, the surprisingly enhanced hydrogen storage property of MgH2 is attributed to the “hydrogen pump” effect of Mg2Ni/Mg2NiH4 combined with the catalytic, “facilitated hydrogen pump,” and confinement roles of Ti3C2Tx MXene nanosheets.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Junqi Liu,Meng Wang,Saijin Wang,Yanli Zhao,Shi Zhou,Jinlian Li,Dongmei Wu
Oxygenated polycyclic aromatic hydrocarbons (OPAHs) present in the environment can enter the skin through direct contact and long-term exposure can increase the risk of skin inflammation, allergic reactions and skin cancer. In this study, a titanium dioxide-two-dimensional transition metal carbide/multi-walled carbon nanotubes/polydopamine/glassy carbon electrode (TiO 2 -MXene/MWCNTs/PDA/GCE) electrochemical biosensor was prepared to evaluate the cytotoxicity of OPAHs based on the changes in the content of xanthine/guanine (X/G) during cellular metabolism. The TiO 2 -MXene/MWCNTs/PDA/GCE exhibited excellent electrocatalytic activity and sensitivity. The surface morphology, structure and electrochemical properties of TiO 2 -MXene/MWCNTs/PDA composite material were characterized using scanning electron microscopy, X-ray diffraction and cyclic voltammetry. Human skin fibroblast cells (HFF-1) were used as model cells, and the cell viability was evaluated based on the electrochemical signal changes of X/G. When exposed to OPAHs for 30 h, the half-maximal inhibitory concentrations (IC 50 ) of 1,4-benzoquinone (1,4-BQ), 1,2-naphthoquinone (1,2-NQ), and 9,10-phenanthrenequinone (9,10-PQ) on HFF-1 cells were 291.88, 67.72, and 4.44 µmol·L −1 , respectively, which were lower than the IC 50 values of 1075.51, 113.96, and 9.63 µmol·L −1 obtained using the traditional MTT assay, indicating higher sensitivity of the sensor. This study achieved sensitive detection of purines in HFF-1 cells, providing a technical method for evaluating the cytotoxicity of persistent organic pollutants OPAHs in the environment.
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Dingding Wang,Zijian Chen,Zhikun Jiang,Yingying An,Shaoyu Yu,Heng Zhang,Wei Yang,Hongdian Lu,Chunxiang Wei,Lei Mao
Flexible polyurethane foams (FPU) are widely used in heat insulation but pose fire risks due to their flammability . In this study, we specifically introduce a novel flame-retardant coating for FPU based on MXene-encased aramid fibers (ANF@MXene). This coaxial cable structure, with MXene nanosheets “bridging” on the PDA modified ANF surface, is applied to FPU using an impregnation method. The hollow tubular MXene structures formed during pyrolysis and combustion enhance fire safety by promoting the generation of a graphitic carbon layer to some extent. Through dip-coating of ANF@MXene onto the surface of FPU, we observed a significant improvement in flame retardancy and smoke suppression of composite FPU. This method presents a promising strategy for fabricating highly fire-safe FPU, paving the way for advanced fire protection solutions across various industries.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Xiaoyan Xiong,Siyi Li,Lijiu Cao,Yunpeng Gong,Xueting Yu,Jiyao Zhang,Yufang Chen,Tao Jin
Molecular responsive materials with fast, stable, and specific selectivity are a key focus of chemical sensor technology research. In the field of triethylamine (TEA) sensor technology, developing TEA-selective responsive materials with superior performance is of great significance for promoting technological progress and industrialization of TEA sensor technology. In this study, MXene/In 2 S 3 micro-nano powder was prepared by combining Ti 3 C 2 Tx-type MXene with nano-sized In 2 S 3 . The morphology, structure, and structure-performance relationship of the material were characterized and analyzed using SEM, TEM, XRD, HAADF, and XPS. Through experiments, it was confirmed that MXene/In 2 S 3 exhibited outstanding specific selectivity to TEA. At a TEA concentration of 20 ppm and a temperature of 210 °C, the response value of the material to TEA was 8.74, while other typical gas molecules such as aldehydes, ketones, and aromatics showed almost no response, demonstrating excellent selectivity for TEA molecules. The response/recovery time was 19 s/42 s, and the response value was stable over 20 consecutive cycles, indicating excellent reliability of the material. In addition, in the concentration range of 1–500 ppm, the response value of the MXene/In 2 S 3 material to TEA concentration followed an exponential fitting of the asymptotic model, with the formula y = a-b*c x and R 2 of 0.99472. Furthermore, the selection and response process of MXene/In 2 S 3 micro-nano materials and TEA molecules were analyzed from the molecular internal structure, and it was found that the selective response characteristics of the material to TEA were related to its microstructure, including shape adsorption.
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2023
·
IF 11.2
Jiasheng Wei,Lei Dai,Xiangju Xi,Zhuo Chen,Meng Zhu,Cuihua Dong,Shujiang Ding,Tingzhou Lei
An effective strategy was demonstrated to design an electromagnetic interference (EMI) shielding paper via a facile surface treatment on paper. TEMPO-oxidized cellulose nanofibers (TOCN) were first integrated with Ti 3 C 2 T x MXene, and subsequently cast onto a filter paper with cationic guar gum (CGG) in a sequential way. TOCN and CGG generated a self-assembling hydrogel and formed a MXene-containing hydrogel film on top of the filter paper. The hydrogel film enhanced the tensile strength (9.49 MPa) of composite paper, and resulted in a 17 % increase as compared to the control. The composite paper containing 80 mg MXene (namely, 2.07 mg·cm −2 ) showed a conductivity of 3843 S·m −1 and EMI shielding effectiveness (EMI SE) of 49.37 dB. Furthermore, the 2-layer assembled TC-M 80 hydrogel composite paper achieved an EMI SE of 73.99 dB. Importantly, this composite paper showed higher EMI SE and lower thickness than a lot of reported materials. The presence of TOCN and CGG also protected MXene against several solvents and the incorporation of polydimethylsiloxane (PDMS) further improved the durability of the composite paper. This work provides a novel and simple strategy to design robust, ultrathin and flexible EMI shielding materials, and it might also inspire other work in paper-based functional materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Jinquan Liu,Liangliang Xu,Qixiao Ji,Longfei Chang,Ying Hu,Qingyu Peng,Xiaodong He
Phototropism and self-oscillation are both self-regulating intelligent movements of biological organisms. However, realizing these intelligent movements in one same artificial actuation system remains a great challenge. Here, by introducing dynamic light-mechanical interaction, a MXene-based actuator is designed and fabricated that can generate unique self-adaptive light-driven actuation from the equilibrium state of phototropic deformation to self-oscillation. The actuator can autonomously track the incident light, showing a sunflower-like phototropism. Moreover, by simply installing a load on the actuator to induce self-shadowing-enabled negative feedback loop, it can carry the load to continuously oscillate under constant light irradiation, with a frequency of 6.5 Hz, an amplitude of 2.6 mm, and a load-to-weight ratio value of 4.7. The oscillation frequency and amplitude can be further adjusted by the incident light power, actuator length, and weight of the installed load. This oscillator can serve as an intelligent light-powered motor platform. By installing diverse accessories with different functions on the oscillator, it can realize various applications, including information transmission, light-induced power generation, bionic motions, and multi-mode intelligent switches. These results provide a simple and versatile strategy for designing a self-adaptive oscillator driven by light and show the prospect of the oscillator in light-powered engines and smart machinery systems.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Lili Zhu,Yutong Cao,Bai Jiang,Junrong Yu,Jing Zhu,Zuming Hu
Incorporating compressibility , elasticity, and porous structures into microwave- absorbing materials will facilitate electromagnetic wave absorption (EMA) and improve environmental adaptability for practical applications. Herein, a strategy to prepare Ti 3 C 2 T x MXene/reduced graphene oxide (RGO)/ cellulose nanocrystals (CNCs) aerogels via a directed freezing method to design three-dimensional structures and strengthen the interaction between Ti 3 C 2 T x MXene and RGO lamellae is demonstrated. Oriented structures and the addition of CNCs benefit structural stability while achieving superior absorption performance by forming perfect impedance matching and multiple polarization effects. Interestingly, the prepared MXene/RGO/CNCs (MRC-20) aerogel delivers the prominent EMA performance in reported MXene-based absorbing materials, with a minimal reflection loss (RL min ) of − 72.32 dB at 12.0 GHz corresponding to a matching thickness of 2.56 mm and an effective absorption bandwidth (EAB) of 4.96 GHz at 1.88 mm with an RL min of − 59.87 GHz. Furthermore, by tuning the content of CNCs, the MRC-20 aerogel exhibits the highest stress (37.2 kPa) at 70% compressive strain and demonstrates the stability of the compression cycle. These intriguing features make the hybrid aerogel stand out among numerous absorbers.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2023
·
IF 7
Linli Zhang,Hui Zhang,Hongling Zhou,Yi Tan,Zhengmin Zhang,Wei Yang,Lixing Zhao,Zhihe Zhao
Infected bone defect repair has long been a major challenge in orthopedic surgery. Apart from bacterial contamination, excessive generation of reactive oxygen species (ROS), and lack of osteogenesis ability also threaten the defect repair process. However, few strategies have been proposed to address these issues simultaneously. Herein, we designed and fabricated a near-infrared (NIR)-responsive, hierarchically porous scaffold to address these limitations in a synergetic manner. In this design, polymethyl methacrylate (PMMA) and polyethyleneimine (PEI) were used to fabricate the porous PMMA/PEI scaffolds via the anti-solvent vapor-induced phase separation (VIPS) process. Then, Ti3C2 MXenes were anchored on the scaffolds through the dopamine-assisted co-deposition process to obtain the PMMA/PEI/polydopamine (PDA)/MXene scaffolds. Under NIR laser irradiation, the scaffolds were able to kill bacteria through the direct contact-killing and synergetic photothermal effect of Ti3C2 MXenes and PDA. Moreover, MXenes and PDA also endowed the scaffolds with excellent ROS-scavenging capacity and satisfying osteogenesis ability. Our experimental results also confirmed that the PMMA/PEI/PDA/MXene scaffolds significantly promoted new bone formation in an infected mandibular defect model. We believe that our study provides new insights into the treatment of infected bone defects.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Wei Wang,Zilong Peng,Zhenping Ma,Lei Zhang,Xianzhen Wang,Ziming Xu,Yongbao Feng,Chenglong Liu,Dewei Liang,Qiulong Li
Lightweight porous composite materials (PCMs) with outstanding electromagnetic interference (EMI) shielding performances are ideal for aerospace, artificial intelligence, military, and other fields. Herein, a three-dimensional Ti3C2Tx MXene/sodium alginate (SA)/carbon nanotubes (CNTs) (MSC) PCMs was prepared by a controlled directional freezing process. This method constructs a directionally ordered porous structure, which can make the incident electromagnetic waves reflect and scattered several times in the PCMs. The introduction of CNTs into the MSC PCMs can form three-dimensional conductive networks with MXene, thus improving the conductivity and further improving the electromagnetic shielding performance. Furthermore, the SA with abundant hydrogen bonding can strengthen the interlayer interaction between MXene and CNTs. Profiting from the controlled directional freezing and highly aligned porous structure, the MSC PCMs with 75 wt % CNTs exhibit ultrahigh conductivity of 1630 S m–1, an ultrahigh EMI shielding effectiveness of 48.0 dB in X-band for electromagnetic waves incident perpendicular to the hole growth direction, and compressive strength of 72.3 kPa. The as-prepared MSC PCMs show excellent EMI shielding and mechanical properties and have significant applications in the preparation of an entirely novel type of EMI shielding materials with an absorption-based mechanism.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jing Wang,Zhaoyue Xia,Heng Yao,Qilong Zhang,Hui Yang
Triboelectric nanogenerators (TENGs) are promising for a variety of applications that require a reliable output performance and stability. In this work, by utilizing the synergistic effect of lithium chloride (LiCl) and MXene, poly(vinyl alcohol) (PVA) based composite films with humidity-sensitive properties were prepared and employed as a friction layer to achieve self-powered TENGs with enhanced output performance under high humidity. The composite material demonstrates exceptional and stable output performance in the humidity range of 30–95% while exhibiting a strong linear correlation with increasing relative humidity (RH). At 95% RH, its short-circuit current increases up to 31.91 μA, which is three times the output of the TENG fabricated by PVA and PTFE (P-TENG). The rich hydroxyl group in PVA, the strong hygroscopicity of LiCl, and the microcapacitor network provided by MXene nanosheets significantly improve the water absorption capacity and surface roughness of the composite material, resulting in an excellent triboelectric output of TENG. Short-circuit current of the TENG in a wide range of RH (from 50% to 98%) responds very sensitively to humidity fluctuations in the environment and superior adsorption–desorption performance as humidity decreases. Furthermore, TENG regarded as a power supply in high humidity conditions was realized and it can light up 240 LEDs instantaneously with the transfer charge density of TENG reaching 194.37 μC m–2. This technology presents an effective method for stable energy harvesting and self-powered sensing in fog, the ocean, and other high-humidity environments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yuchen Cui,Xiaoya Zhou,Xin Huang,Lei Xu,Shaochun Tang
Currently, severe shuttle effects and sluggish conversion kinetics are the main obstacles to the advancement of lithium–sulfur (Li–S) batteries. Modification of the battery separator by a catalyst is a promising approach to tackle these problems, but simultaneously obtaining rich catalytic active sites, high conductivity, and remarkable stability remains a great challenge. Herein, a flower-like MXene/MoS2/SnS@C heterostructure as the functional intercalation of Li–S batteries was prepared for accelerating the synergistic adsorption-electrocatalysis of sulfur conversion. The MXene skeleton constructs a three-dimensional conductive network that anchors polysulfides and enhances charge transfer. Meanwhile, the MoS2/SnS has rich active sites for accelerating polysulfide conversion, leading to excellent electrochemical performances. A battery with MXene/MoS2/SnS@C displays an extraordinary capacity of 836.1 mAh g–1 over 200 cycles at 0.5C and demonstrates a remarkable cycling stability with a capacity attenuation of approximately 0.051% per cycle during 1000 cycles at 2C. When the sulfur loading reaches 5.1 mg cm–2, the capacity still maintains 722.4 mAh g–1 over 50 cycles. This research proposes a novel strategy to design stable catalysts for Li–S batteries with an extended lifespan.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yuming Sun,Yue Hao,Xinyu Lin,Zhonghuan Liu,Hongyang Sun,Shuhan Jia,Yahui Chen,Yongsheng Yan,Xuefei Li
The efficiency of the photocatalytic reaction is mainly determined by the effective separation of photogenerated electron (e - ) and hole (h + ). As a high electrical conductivity, two-dimensional (2D) Ti 3 C 2 MXene is widely used as an electronic transmission intermediary with a large surface area and active terminal. In this work, 1D CuZnInS are loaded on the surface of 2D Ti 3 C 2 MXene nanosheets to compound 1D/2D CuZnInS/Ti 3 C 2 nanocomposites with effective inhibition of charge-carrier recombination. The H 2 production rate of optimized 1D/2D CuZnInS/Ti 3 C 2 composite reached 15.24 mmol h −1 g −1 , which is 4.5 times than that of pure CuZnInS (3.38 mmol h −1 g −1 ), and the apparent quantum efficiencies (AQEs) of composite photocatalysts can reach 0.39% and 0.24% under light irradiation at 365 nm and 420 nm wavelength, respectively. In addition, 1D/2D CuZnInS/Ti 3 C 2 has high stability after 10 cycles. The enhanced photocatalytic performance is attributed to the large specific surface area of 2D Ti 3 C 2 nanosheets, which facilitates the separation and transfer of photogenerated e - and h + pairs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）