JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yijiao Zhang,Yanming Wang,Haiying Huo,Pu Zhang,Xiaoliang Zhang,Hongwei Che,Jingbo Mu,Zhixiao Zhang,Ping Li,Chunxia Wu
A 2D/1D/0D ternary heterostructure was fabricated that combined the accumulative merits of each component to exhibit superior performance through synergistic effects. This study adopted a strategy based on integrating 2D MXene, 1D tubular MnO 2 , and 0D Ag nanospheres into one electrode to obtain a ternary heterogeneous layered structure composite electrode. Utilizing the collaborative and intensive outcomes from MXene, MnO 2 , and Ag, the resulting MXene/MnO 2 /Ag composite electrode achieved an exemplary specific capacitance of 880.8 F g −1 at 2 A g −1 . In this study, an asymmetric supercapacitor (ASC) was developed and fabricated using the MXene/MnO 2 /Ag composite for the anode, commercial activated carbon as the cathode. Consequently, in a two-electrode setup, the resulting devices displayed an admirable specific capacitance of 112.5 F g −1 at 3 A g −1 . After being cycled 5000 times, the device maintained 85.0 % of its original capacitance under charge-discharge conditions. Furthermore, the ASC device demonstrated a pronounced energy density of 39.9 Wh g −1 during cycling with a corresponding power density of 2955.8 W kg −1 . These results showed that the dimensionally combined MXene/MnO 2 /Ag nanoarchitectonic electrodes offered considerable application potential for enhancing energy storage in supercapacitors.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Fan Xie,Qiaoling Liu,Xiyi Dai,Haitao Wei,Zhaoqing Lu
Multi-functional electromagnetic interference (EMI) shielding materials are crucial for advanced electronic devices, requiring low thickness, exceptional shielding performance, and stability, especially in extreme conditions. In this study, the hollow sandwich MXene/h-AgNWs/ANF (AMAgMA) composite films were fabricated via template sacrificing method and layer-by-layer vacuum assisted filtration. Specifically, the hollow MXene was created using PMMA as the template, together with AgNWs for the conductive layer, while ANF provided stability and high temperature resistance as the protective layer. The optimized EMI shielding efficiency (SE) reached 88.2 dB for a film thickness of 93 μm, with an SSE/t value of 18160 dB cm 2 ·g −1 , which was attributed to the hollow structure and continuous double conductive network design. Remarkably, EMI SE of the films maintained even after 70 days of exposure to oxidation, acid, alkali, salt, and ultrasonic treatment thanks to the sandwich design. Additionally, the composite films displayed excellent heat transfer and thermal stability (530 °C), alongside notable flame retardancy and self-extinguishing properties. The superior EMI shielding performance and stability in extreme environments suggest a promising application potential in advanced electronics.
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2024
·
IF 4.3
Md. Abdul Khaleque,Md. Romzan Ali,Mohamed Aly Saad Aly,Md. Ikram Hossain,Kim Han Tan,Md. Abu Zaed,Rahman Saidur,Md. Mahbubur Rahman,Nabisab Mujawar Mubarak,Md. Zaved Hossain Khan
Ciprofloxacin is a widely used antibiotic for treating numerous bacterial infections and it is also considered by the world health organization (WHO) to be extremely vital for human medicine. Therefore, accurate, simple, and cost-effective detection of ciprofloxacin, a commonly used antibiotic, is critical for treating various bacterial infectious diseases. In this work, glassy carbon electrode/poly (rutin)/Ti 3 C 2 T x, is developed for the detection of ciprofloxacin antibiotic. The electrochemical sensor was modified with rutin hydrate monomer and Ti 3 C 2 T x via electro-polymerization of rutin hydrate and drop-casting of Ti 3 C 2 T x . The modified electrode surface was characterized using scanning electron microscopy, high-resolution transmission electron microscopy, attenuated total reflectance- Fourier transform infrared spectroscopy, and electrochemical impedance spectroscopy. The oxidation of ciprofloxacin was performed in 0.01molL −1 of phosphate buffer at a pH level of 5.0. This medium established a linear range of 1.0 × 10 −9 -1.0 × 10 −4 molL −1 , limit of detection at 1.0 × 10 −9 molL −1 and sensitivity of 0.49 μA/μMcm 2 . Finally, the modified electrode displayed high selectivity when tested in inorganic-organic mixtures as well as in real sample medium such as blood serum. To the best of our knowledge the current work is the first to report the use of MXene/rutin composite for electrochemical sensing mechanism. The proposed electrochemical sensor has high potential for the formation of therapeutic drug doses application via monitoring of CIP patient intake (clinical settings of CIP).
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 22
·1835
·
IF 4.4
Chong Li,Ran Tao,Jinqiao Hou,Huanming Wang,Chen Fu,Jingting Luo
Ammonia (NH 3 ) gas is prevalent in industrial production as a health hazardous gas. Consequently, it is essential to develop a straightforward, reliable, and stable NH 3 sensor capable of operating at room temperature. This paper presents an innovative approach to modifying SnO 2 colloidal quantum dots (CQDs) on the surface of Ti 3 C 2 T x MXene to form a heterojunction, which introduces a significant number of adsorption sites and enhances the response of the sensor. Zero-dimensional (0D) SnO 2 quantum dots and two-dimensional (2D) Ti 3 C 2 T x MXene were prepared by solvothermal and in situ etching methods, respectively. The impact of the mass ratio between two materials on the performance was assessed. The sensor based on 12 wt% Ti 3 C 2 T x MXene/SnO 2 composites demonstrates excellent performance in terms of sensitivity and response/recovery speed. Upon exposure to 50 ppm NH 3 , the frequency shift in the sensor is −1140 Hz, which is 5.6 times larger than that of pure Ti 3 C 2 T x MXene and 2.8 times higher than that of SnO 2 CQDs. The response/recovery time of the sensor for 10 ppm NH 3 was 36/54 s, respectively. The sensor exhibited a theoretical detection limit of 73 ppb and good repeatability. Furthermore, a stable sensing performance can be maintained after 30 days. The enhanced sensor performance can be attributed to the abundant active sites provided by the accumulation/depletion layer in the Ti 3 C 2 T x /SnO 2 heterojunction, which facilitates the adsorption of oxygen molecules. This work promotes the gas sensing application of MXenes and provides a way to improve gas sensing performance.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2024
·Vol. 12
·期 1
·2400565
·
IF 4.3
Na Kong,Ting Ren,Hui Yang,Mia Angela N. Judicpa,Ken Aldren S. Usman,Xu Zhao,Yanqiu Shao,Joselito M. Razal,Jinlong Tao,Jizhen Zhang
Flexible gas sensors are gaining interest for real-time volatile gas monitoring. A natural rubber (NR)/MXene nanocomposite sensor is developed. Among the six selected target volatile gases, the composite sensor exhibited a strong response value (82% toward 100 ppm NH 3 ) with the fastest response/recovery time (12.3 s/15.5 s) to NH 3 . The sensitivity showed a clear dependence of gases, suggesting a good selectivity to varying gases. Ti 3 C 2 T x MXene gas sensors exhibited a very low limit of detection of 50–100 ppb for volatile organic compounds (VOCs) at room temperature. In addition, the NR/MXene sensor allows detection of the mixture of ammonia (NH 3 ), dimethyl sulfoxide (DMSO), and acetone (C 3 H 6 O) and it shows good response depending on the total concentration of VOC gases. Furthermore, the flexible nanocomposite sensor exhibits stable sensing performance at different bending states (0-120°) and shows 20-day atmospheric stability. This sensor's ability extends to alcohol breath analysis, useful for drunk driving detection. This work paves the way to the possibility of using robust MXene-based toward practical realization of electronic devices.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Yanbo Liu,Tianyi Zhang,Bo Yang,Ming Hao,Xiaodong Hu,Xiaoxiao Wang
Piezoelectric devices are becoming increasingly attractive in areas such as wearable electronics, mobile environmental sensors, and health monitoring due to their unique capability to harvest discrete mechanical energy. Nevertheless, most piezoelectric materials are fabricated into low-dimensional products, which limits the performance breakthroughs and application prospects of these devices. Here, a series of polyvinylidenefluoride (PVDF) doped with dopamine hydrochloride@BaTiO3/MXene/chitosan (PVDF-B/MXene/CS) composite aerogel piezoelectric devices with outstanding output performance were fabricated by combining electrospinning and freeze-drying techniques. Among them, the PVDF-B/MXene/CS composite aerogel-based piezoelectric devices with electrodes exhibited rather better output performance compared to those without electrodes, while the electrodeless piezoelectric devices demonstrated excellent piezoelectric response under various stress modes. The electrodeless piezoelectric devices maintained a stable voltage over 1800 cycles and achieved the maximum power output of 4.25 nW with an external resistance of 100 MΩ. Furthermore, the electrodeless piezoelectric device was capable of charging capacitors with varying capacities and could easily illuminate a small light emitting diode (LED) light by manual tapping. These piezoelectric devices showed tangible and stable signals regarding mechanical stimuli monitoring, such as wrist bending, finger tapping, and pedal movements. This work not only expands the range of aerogel-based piezoelectric materials but also showcases their immense potential in the field of piezoelectric devices.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 18
·10808-10818
·
IF 10.7
Zhihui Qin,Yunfeng Li,Xiaoming Wang,Ying Liu,Na Li,Qiuli Xu,Lei Ye,Tifeng Jiao
Multifunctional conductive hydrogels are widely used as promising candidates for flexible sensors. For these applications, gels with integrated multiple performances, particularly the combination of high mechanical strength and recyclability, are highly desirable but can be rarely achieved in one gel. Here, a MXene-composited organohydrogel is prepared by a facile freezing–thawing process with the incorporation of tannic acid-modified MXene (TA@MXene) into a poly(vinyl alcohol) (PVA) network in glycerol/water solvent. The introduction of TA can largely improve the stability of MXene in aqueous solution, and meanwhile induces the formation of abundant hydrogen bonds between PVA chains and TA@MXene. The obtained organohydrogel exhibits high tensile strength (3.55 MPa), ultrahigh toughness (9.93 MJ m−3), superior anti-freezing ability (−40 °C), good long-term stability (≥20 days), and remarkable ultraviolet (UV) light filtering capabilities. Interestingly, owing to the reversibility of non-covalent crosslinked structures, the organohydrogel can be recycled and reused by a hot melting–cooling process. Moreover, the organohydrogel-based wearable sensors show high strain sensitivity in a large strain range, which can be used to monitor various human movements and physiological activities, even under harsh conditions or after recycling. This work gives new perspectives for the preparation of high-strength and recyclable gels with multiple functions for flexible sensors.
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2024
·
IF 9.5
Zhang Yu,Zhang Guangcheng,Ma Zhonglei,Qin Jianbin,Shen Xi
The increasing need for electromagnetic interference (EMI) shielding of electronics in cold environments such as those in aircraft, space exploration, and wearable heaters to avoid hazardous icing conditions or hypothermia requires the development of thin and lightweight EMI shielding materials preferably by absorbing rather than reflecting electromagnetic (EM) waves while also generating heat through energy-efficient electrothermal conversion. However, it is challenging to achieve absorption-dominant EMI shielding and energy-efficient electrothermal heating simultaneously in a thin and lightweight structure. Here, we develop a heterogeneous composite film comprising a porous multi-walled carbon nanotubes (MWCNTs)/bacterial cellulose (BC) film and an aligned MXene/Ag nanowires (NWs) backing via a sequential vacuum filtration process. The porous film contains random conductive networks of MWCNTs with moderate conductivity while the aligned MXene sheets atop Ag NWs network affords high conductivity in the backing, giving rise to graded electrical conductivity for absorption-dominant EMI shielding. The increasing Ag NW coverage leads to significantly increased electrical conductivity without increasing the EM wave reflection as well as the density and thickness of the film, yielding excellent specific EMI shielding effectiveness (> 8500 dB/(g·cm 2 )), low driving voltage for energy-efficient electrothermal heating (163 °C at 2.5 V), and fast response time (60 s) at a low areal density of 0.015 mg/cm 2 . Combining EMI shielding and electrothermal heating, the heterogeneous film developed here are promising contenders for the protection of electronic equipment in low-temperature environment.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Wei Guo,Zhiyu Chen,Yaxu Zhao,Congyi Zhao,Xiong Lu,Faming Gao
Transition-metal oxides (TMOs) with hierarchical nanostructures derived from metal organic frameworks (MOFs) were widely applied in electrochemical investigation. In this paper, a rational synthesis strategy of TMOs with specific nanostructures and multiple components was reported. Three-dimensional (3D) CuMoV layered metal hydroxides (CuMoV LDHs) architecture was prepared by mild and facile wet-chemistry process to reshape Cu-MOF surface and realize the self-templated conversion. After thermal annealing, hierarchical CuMoV LDHs were transformed to polynary Cu 3 V 2 O 8 /Cu 6 Mo 5 O 18 (CMVO) compounds. Based on the electrostatic attraction, CMVO/MXene (CMVON) compounds were assembled by combining the CMVO and few-layer Nb 2 CT x MXene (f-Nb 2 C) nanosheets and employed as modified materials on the electrode surface. Benefiting from the superior electronic conductivity, large surface area and shortened ion diffusion pathway, the CMVON hybrids demonstrated excellent electrochemical sensing properties. Upon optimum conditions, the constructed CMVON based AChE biosensor manifested markedly analytical performance with the low limit of detection (LOD) and wide linear ranges for parathion-methyl, malathion, and fenitrothion detection.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Fangli Yang,Ke Lv,Xu Zhao,Derui Kong,Na Kong,Zirong Luo,Jinlong Tao,Ji Zhou,Joselito M. Razal,Jizhen Zhang
The development of electrode materials with a hierarchically porous structure and good electrical connection is key to improving the charging-discharging rate and energy density of supercapacitors. However, the restacking issue of two-dimensional nanomaterials, such as MXene, seriously hinders the diffusion of electrolyte ions. Different from the extensively used sacrificing template method, a hierarchical heterostructure of electrically conducting mesoporous hollow carbon spheres (MHCS) and MXene composite electrode is designed and achieved through simple vacuum filtration without further template removing procedures. This direct preparation strategy not only effectively improves the specific surface area of the electrode but also enhances the abundant surface pores and good conductivity of MHCS, improving the penetration of the electrolyte solution and shortening the ion transport path, leading to a pronounced improvement in specific capacitance and rate performance of the electrodes. Additionally, the influence of sheath thickness of MHCSs on ion transfer rate is deeply discussed. The introduction of carbon nanotubes (CNTs) further improves conductivity and stability while maintaining good flexibility. Consequently, the MXene/MHCS/CNT film delivers a high specific capacitance (395F g −1 at 2 mV s −1 ), outstanding rate performance (70.9 % at 1000 mV s −1 ), and excellent cycling stability (98.3 % capacity retention after 10,000 cycles). Furthermore, the assembled symmetric supercapacitor provides a maximum energy density of 14.48 Wh kg −1 . This work provides a quick and effective approach for constructing high performance 3D MXene architectures for fast ion transfer electrodes.
✓ 已验证
产品关联
DOI
高影响因子
ACS Photonics
·
2024
·
IF 6.5
Shulin Sha,Kai Tang,Maosheng Liu,Peng Wan,Zeng Liu,Da Ning Shi,Caixia Kan,Mingming Jiang
Ferroelectric materials, known for their superior spontaneous polarization and pyroelectric and photovoltaic effects, offer a promising avenue for fabricating high-performance optoelectronic devices. Herein, we report an ultraviolet (UV) photodetector (PDs) based on BaTiO3@MXene/4H-SiC heterostructure, with its photosensitive properties significantly boosted by the ferro-pyro-phototronic effect. In the detector, the incorporation of MXene nanosheets boosts the spontaneous ferroelectric polarization of BaTiO3 nanocrystals, thereby strengthening the built-in electric field at the BaTiO3/4H-SiC heterojunction. The resulted BaTiO3@MXene/4H-SiC heterostructure can work in a self-biasing manner, with robust performances, including responsivity (∼187.74 mA/W), specific detectivity (∼6.52 × 1013 Jones), external quantum efficiency (∼75.07%), response/recovery time (∼74.3/122.7 μs) upon 310 nm light irradiation. Particularly, the superlinear increase of the photocurrent, which results from the hot-carrier multiplication in MXene nanosheets, allows the device to produce additional photocurrent under ultraviolet illumination. Theoretical analysis confirms that the surface modification of MXene nanosheets can effectively alter the length of the Ti–O bonds on BaTiO3 nanocrystal surfaces, thus enhancing their spontaneous ferroelectric polarization. Being seamlessly integrated into an ultraviolet wireless communication system, the BaTiO3@MXene/4H-SiC self-powered photodetector demonstrates promising application prospects in optoelectronic interconnection circuits. This study provides an optimization strategy for advanced BaTiO3 nanocrystals toward future high-performance electronic and optoelectronic devices in existing applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Haonan Zhai,Huibin Liu,Yufen Zhang,Jinjin Wen,Wenyue Yang,Huiting Xu,Xiaoteng Yan,Wenchao Peng,Jiapeng Liu
Aqueous zinc ion batteries (AZIBs) are now gaining widespread attention because of their cost-effectiveness, intrinsic safety, and high theoretical capacity. Nevertheless, it is still crucial to exploit high-performance electrode materials. Herein, the freestanding 1T MoS 2 @Mxene hybrid films (MMHF) were synthesized and directly served as the cathode of AZIBs. The freestanding MMHF exhibited the hierarchical layer structure with excellent conductivity and strong interfacial interaction, which promoted the exposure of more active sites and the transfer of electrons/ions. Consequently, the MMHF displayed a high specific capacity of 270 mAh g –1 (at 0.1 A g –1 ) and good rate performance. Impressively, even after 2500 cycles under 10 A g –1 , the freestanding MMHF cathode contributed a superior specific capacity of 108 mAh g –1 with an outstanding capacity retention rate of 94.7 %. Meanwhile, the energy storage mechanism of the MMHF electrode was also elucidated through ex-situ characterizations. Furthermore, the density functional theory (DFT) computations revealed the strong interfacial interactions between 1T MoS 2 and MXene, high conductivity, and low Zn 2+ diffusion barrier. This work provides a new viewpoint for designing freestanding transition metal disulfides (TMDs) -MXene hybrid film electrodes for AZIBs.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）