INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Tao Yuan,Zhen Zhang,Qian Liu,Xiu-Tong Liu,Shao-Qu Tao,Chun-li Yao
In recent times, there has been significant interest in the utilization of cellulose nanofiber (CNF) films as the foundation for supercapacitors due to their three-dimensional structure, flexibility and eco-friendliness. An ultrasonic and vacuum filtration method was used to prepare a hybrid film consisting of MXene (Ti 3 C 2 T x ), CNF and liquid metal (LM). The combination of CNF and LM with MXene produces a porous structure with higher electrical conductivity, which facilitates the transportation of ions and electrons within the composition and confers the material with heightened electrochemical properties. The CNF/MXene/LM electrode has a significant area capacitance of 871.3 mF cm −2 at a current density of 5 mA cm −2 . The hybrid film demonstrates excellent stability, maintaining a high conductivity of 546.4 S∙cm −1 and retaining 96.9 % capacitance after 2000 cycles at a current density of 10 mA cm −2 . By utilizing the thin film as an electrode, a high-performance quasi-solid supercapacitor was fabricated, with a remarkably thin thickness of only 0.319 mm. Supercapacitors show exceptional electrical properties, including a surface-specific capacitance of 188.2 mF cm −2 at a current density of 5 mA cm −2 . This study indicates that flexible electrodes made from cellulose nanofiber have extensive potential in the realm of supercapacitors.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2021
·
IF 7.664
Min Sang,Shuai Liu,Wenwen Li,Sheng Wang,Jun Li,Ji Li,Shouhu Xuan,Xinglong Gong
Recently, multifunctional materials have attracted tremendous attention in intelligent equipment and human–computer interaction, requiring the integration of electrical conductivity, sensing property and heating management. Herein, conductive MXene is formulated and deposited on the PVDF film surface and followed by integrating PI tape to construct a multifunctional PVDF/MXene/PI wearable electronic. The PVDF/MXene/PI with sandwich structure shows ideal mechanical strength and tensile toughness. Based on the conductive MXene network, PVDF/MXene/PI composite possesses excellent mechanosensation ability, which can sensitively monitor different human movements. Besides, PVDF/MXene/PI composite presents prominent Joule heating capability and achieves a temperature of over 80 ℃ at 6.5 V voltage. Insulated high-temperature resistant PVDF and PI tape as protective layers ensure the stability and safety of PVDF/MXene/PI heater. Moreover, PVDF/MXene/PI composite exhibits outstanding electromagnetic interference shielding effectiveness of 40 dB. Finally, PVDF/MXene/PI multifunctional electronic with fascinating multi-functions shows potential applications in human thermotherapy, human–machine interaction and electromagnetic wave protection.
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JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Qingqing Li,Tianmeng Zhang,Zhixiang Dai,Fangyan Su,Xiangwei Xia,Ping Dong,Jianfeng Zhang
The demand to address issues such as drinking water safety and industrial fouling caused by high-hardness ions has still emphasized the development of advanced membrane materials. In this study, through a maneuverable amide-cross-linking strategy, a new positively-charged polyamide (PA) nanofiltration membrane was developed for the first time by incorporating amino-functionalized Ti 3 C 2 T x nanoparticles (Ti 3 C 2 T x -NH 2 , TN). In addition to the induced electropositivity, the hydrophilicity of the as-obtained PA-TN membrane was also elevated with a maintained nodular structure by tailoring the interfacial polymerization reaction process of piperazine (PIP) with trimesoyl chloride (TMC). Therefore, the newly developed PA-TN membrane exhibited both superhigh rejection of Ca 2+ and Mg 2+ over 96%, and the flux increased 2–3 times even for the salinity solutions than many similar NF membranes reported in literature. Furthermore, the enhanced long-term stability and fouling resistance of the PA-TN membrane was also validated due to its new organic-inorganic structural coupling and improved hydrophilicity. This work provides a new strategy for the preparation of organic-inorganic hybrid positively charged nanofiltration membranes for water softening treatment.
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ACS Applied Nano Materials
·
2023
·
IF 5.9
Xinxin Li,Boxin Zhao,Wenjing Qin,Min Yang,Lei Feng,Changshun Gu,Zhenhao Tian,Hengchao Liu,Xiujie Guo,Yan Zhang,Shougen Yin
Developing multifunctional electronic fabrics with sensing capabilities, electromagnetic interference (EMI) shielding, and Joule heating performance holds great significance for health monitoring and medical protection. However, most fabrics struggle to combine multiple functions and optimize them simultaneously. For example, achieving both high sensitivity and a wide detection range in sensing devices remains a challenge. In this paper, we present a multidimensional composite structure comprising MXene Ti3C2Tx nano lamellar, self-assembled lotus leaf-like MXene/EGaIn and carbon nanotubes (CNTs) assembled on the surface of thermoplastic polyurethane to create a multifunctional MXene EGaIn/MXene CNT fabric (MEMC fabric). The multidimensional materials form a stable conductive network under tension. As a strain sensor, the MEMC fabric exhibits a large sensing range (0–360%) and ultra-high sensitivity (GF ∼ 114,700), making it suitable for artificial eardrum research. Additionally, MEMC demonstrates excellent EMI shielding effect (∼73 dB) and maintains good EMI shielding performance under tensile conditions. The fabric also showcases outstanding Joule heating performance (low voltage drive ∼2 V, fast heating time ∼13 s, and high heating stability ∼4000 s). This paper also demonstrates the multifunctional combination of MEMC fabrics, achieving simultaneous sensing, EMI shielding, and Joule heating functions under stretching. This work offers a forward-looking approach for constructing multifunctional composite fabrics, and the resulting MEMC composite materials hold potential applications in portable electronic devices and defense industries.
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JOURNAL OF MOLECULAR LIQUIDS
·
2020
·
IF 5.065
Ziyuan Zhou,Lei Li,Xiaoya Liu,Haoyong Lei,Wanjie Wang,Yanyu Yang,Jianfeng Wang,Yanxia Cao
Two-dimensional (2D) transition metal carbides and nitrides (MXenes) have spurred great attention in many applications due to their outstanding electronic or mechanical properties. The exfoliation into single and fewer layer nanosheets of MXene is a requisite step for performance study in many cases. Herein this study aims to propose a facile and convenient liquid phase exfoliation (LPE) method to fabricate fewer-layer MXene nanosheets in large scale. The Hansen solubility parameters (HSPs) and surface tension component ratio are estimated and further applied to detect a green low-boiling-point water/acetone cosolvent for the better exfoliation of MXene. It has been found that the exfoliation efficiency is improved efficiently by matching HSPs and surface tension component ratio of MXene to that of solvents. A high concentrated MXene dispersion up to 1.727 mg/ml in the optimum composition of the water/acetone mixture which is approximately 78 and 5 times higher than that in pure acetone and water, respectively. Detailed characterization of morphology and suspension stability of exfoliated MXene are implemented which exhibit that the high quality and more stable MXene nanosheets are obtained in the suitable cosolvent. In addition, the determined HSPs and surface tension component ratio of MXene here will make a contribution to finding other new efficient solvents for MXene conveniently in specific fields.
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FIBERS AND POLYMERS
·
2026
·
IF 3.1
Hu Shen,Xie Jinlin,Zhang Boxuan,Wang Weiye,Ran Xuqin,Yang Ming,Li Xinyu,Kobesy Osama,Wei Guoke,Qiu Hua,Gu Peng
The rapid development of smart wearable technology has driven innovation in the field of flexible strain sensors. Carbon nanotube (CNT) fibers have emerged as promising candidates for the fabrication of flexible strain sensors due to their exceptional flexibility, remarkably high specific surface area, outstanding mechanical properties, and excellent electrical conductivity. However, interstitial voids between CNT bundles constitute structural defects that impair both load-bearing capacity and electron transport efficiency. This limitation can be effectively mitigated by incorporating metal nanoparticles, which not only fill these voids but also enhance composite performance through their intrinsic low electrical resistance and exceptional chemical inertness. In this study, MXene was utilized as a reducing agent to directly reduce platinum particles from chloroplatinic acid and autonomously grow into the voids of carbon nanotube yarns without the need for additional reducing agents. This modification strategy resulted in substantial enhancements in both mechanical and electrical properties: The tensile strength of platinum-modified CNT yarns increased from 121.2 to 137.27 MPa (13.3% increase), while electrical conductivity demonstrated an 85.3% improvement from 6.18×10 4 S/m to 11.45×10 4 S/m. The prepared flexible and stretchable strain sensors exhibit a resistive change of 380%, a tensile strain range of 0–30%, a GF sensitivity of 23.8, a fast response time of 0.6 s, a recovery time of 0.8 s, and dynamic sensing stability under varying conditions. Significantly, the sensor enables multi-channel synchronous monitoring of biomechanical signals at major human joints, establishing a new design framework for CNT yarn-based elastic strain sensors.
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Journal of Environmental Sciences
·
2022
·
IF 6.796
Zongyang Ya,Qiyou Wang,Jingjin Cai,Peng Wang,Xinyu Jiang,Zhiyin Cai,Shanglin Xiang,Tingwei Wang,Dongyu Cai
It remains as a challenge for realizing efficient photo-responsive catalysts towards large-scale degradation of organic pollutants under natural sunlight. This work reports a new pore engineering strategy for creating ultra-porous g-C 3 N 4 micro-tubes with an unprecedentedly high specific surface area of 152.96 m 2 /g. This is mainly associated with releasing internal vapor pressure in the autoclave where the hydrothermal treatment of the urea/melamine mixture is processed. Supported by microscopic observation, porosity measurement and spectroscopic characterization, it is found that releasing the pressure at halfway of hydrothermal process is vital for forming exfoliated rod-like precursors and the de-aggregation of these rods presents substantial benefits on the production of mesopores on g-C 3 N 4 micro-tubes during the calcination of precursors. This offers a large number of reactive sites required by photocatalytic reaction. Coupling these micro-tubes with Ti 3 C 2 T X nanosheets via electrostatic interaction yields a 1D/2D heterojunction with a close interfacial contact. The addition of metallically conductive Ti 3 C 2 T X nanosheets accelerates the separation between electrons and holes, and also enhances the light absorption . All these merits of structural design lead to forming a group of highly efficient catalysts demonstrating an excellent photocatalytic degradation rate of k = 0.0560 min −1 for RhB dyes under 100 mW/cm 2 visible light radiation that micks sunlight outdoors. This laboratory valuation is further supported by an outdoor test that shows a fast degradation rate of 0.0744 min −1 under natural sunlight.
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高影响因子
APPLIED CLAY SCIENCE
·
2021
·
IF 5.467
Guangyong Zeng,Ke Wei,Haiyan Zhang,Jun Zhang,Qingquan Lin,Xiaojie Cheng,Arijit Sengupta,Yu-Hsuan Chiao
The oily wastewater is one of the major waste streams generated due to industrialization. The membrane technology has prominent advantages in the field of oily wastewater treatment . In present investigation, halloysite nanotubes (Hal) and polydopamine (PDA) were utilized to synergistically modify MXene followed by the fabrication of a series of Hal@MXene-PDA two-dimensional (2D) composite membranes by vacuum filtration. Observing the morphology of the membrane and exploring the change in interlayer space by scanning electron microscope (SEM), atomic force microscope (AFM) and X-ray diffraction (XRD), it was confirmed that, the composite membrane was successfully modified. The results revealed that, the Hal@MXene-PDA composite membrane exhibits higher hydrophilicity compared to the virgin membrane. The pure water flux using the composite membrane was found to be 5036.2 L·m −2 ·h −1 ·bar −1 , and the rejections of petroleum ether and lubricating oil were evaluated as 99.8%. The modified membrane(M6) also shows good anti-fouling ability in the anti-fouling cycle test and hence can be considered as a potential candidate for oil-water separation.
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JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 4
·2597-2609
·
IF 4.682
Zhai Wangyi,Cao Yuanming,Li Yifei,Zheng Min,Wang Zuoshan
The exploration of novel and multifunctional coatings through composite nanomaterials design is crucial for developing next-generation polyester fabrics. Herein, we report an efficient approach of self-assembling MoO 3– x QDs on MXene (Ti 3 C 2 T x ) to fabricate multifunctional polyester fabrics. In a typical preparation, MoO 3– x QDs with an average size of 5 nm were uniformly distributed on the surface of MXene nanoflakes upon UV light. Then, polyester fabrics were coated with MoO 3– x QDs/MXene by dipping. The results demonstrated that the coated fabric had a decreasing trend in the electrostatic half-period from more than 60 s (untreated fabric) to 0.15 s and had excellent washing fastness. In addition, a similar phenomenon was found in smoke suppression, with the coated fabric producing 36.16% less smoke. More importantly, the sterilization rate of the coated fabric had reached 99% to E. coli and S. aureus under sunlight owing to the strong response of MoO 3– x QDs/MXene. This work provides a novel and facile strategy to design multifunctional coatings.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Rongyang Liu,Li Jiang,Zizhen Yu,Xufeng Jing,Xiu Liang,Dan Wang,Bo Yang,Chengxing Lu,Wei Zhou,Shangzhong Jin
Recent years, two-dimensional transition metal carbonitrides, MXene, have emerged as SERS substrates due to their unique optical and electrical properties. In order to combine the advantages of metal nanoparticles and MXene for SERS substrates, this paper prepared an MXene (Ti 3 C 2 T x ) -Ag nanoparticles (NPs) hybrid biosensor through in-situ electrostatic self-assembly method, in which the citrate-coated Ag NPs are loaded on the negatively surface of Ti 3 C 2 T x flakes through positively charged PDDA polymer. The characterizations show that a large number of Ag NPs uniformly adsorb on both side of Ti 3 C 2 T x nanosheets. The prepared platform exhibits excellent SERS performance, long-term stability and good uniformity by detecting 4-MBA molecules. The electromagnetic field distribution was simulated to theoretically show the Raman enhancement mechanism of this platform. In order to explore the possible application of the sensor in clinical diagnosis and monitoring of biological environment, the platform was used for biomolecule detection. The detection limit of adenine molecules can be as low as 10 −8 M. For dopamine molecules with concentration ranging from 5 × 10 -6 M to 5 × 10 −8 M, the SERS results show a linear relationship between peak intensity and concentration of dopamine molecules. The biosensor was applied for serum detection. The results suggest that MXene-PDDA-Ag NPs hybrid platform could be used as a sensitive and uniform biosensor for label-free quantitative detection of bio-molecular based on SERS method, which could be applied in the field of biotechnology.
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JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Xiaoying Wang,Qingqing Li,Jianfeng Zhang,Haimeng Huang,Shaoyu Wu,Yan Yang
The development of high performance reverse osmosis (RO) membranes still remains a big challenge due to not only the trade-off between water flux and salt rejection, but also their easy fouling and chlorine attacking. In this paper, a novel thin-film nanocomposite RO membrane with two-dimensional MXene Ti 3 C 2 T x embedded in the polyamide (PA) layer was fabricated by in-situ interfacial polymerization with m-phenylenediamine aqueous solution and trimesoyl chloride. Due to the outstanding diffusion regulating effect of Ti 3 C 2 T x in accordance with the Fick's first law, the water permeability was elevated to a maximum value of 2.53 L m −2 h −1 bar −1 at a high NaCl salt rejection of 98.5%. Simultaneously, the enhanced anti-fouling, and chlorine resistance of the as-obtained PA-Ti 3 C 2 T x membrane were also obtained, outperforming the pristine PA and other related RO membranes in literature. Especially after a chlorine-resistance test at 10000 ppm h, a high salt rejection of 97.1% for the PA-Ti 3 C 2 T x membrane was still retained. Based on the microstructural observation and mechanism analysis, such an improvement in chlorine resistance was mainly ascribed to the interaction between surface functional groups of Ti 3 C 2 T x nanosheets with active chlorine, which effectively protected the PA matrix from being chlorine attacked. This work illustrates successfully a very new use of Ti 3 C 2 T x to improve the comprehensive performance for water desalination membranes for practical applications.
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危险品化学品经营许可证（带存储）