SENSORS AND ACTUATORS B-CHEMICAL
·
2023
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IF 8.4
Chong Li,Ran Tao,Zhiqiong Li,Jiahui Liao,Chen Fu,Jikai Zhang,Huiling Ong,Chenze Lu,Jingting Luo,Yongqing Fu
Humidity sensing is crucial for food production, environmental monitoring, microelectronic manufacture, and common living conditions. Thus, there is a high demand for development of high-performance humidity sensors with good stability, high precision and fast responses. In this study, Love wave mode humidity sensors were prepared using quartz-based SAW devices coated with composite sensing layers of accordion-like Ti 3 C 2 T x , MoS 2 nanoflowers and MoS 2 @Ti 3 C 2 T x hierarchical structure, respectively. The hydrophilic Ti 3 C 2 T x was used to provide abundant surface functional groups for adsorption of water molecules, and the hydrophobic MoS 2 enabled rapid adsorption and desorption of water molecules from the surface of MoS 2 @Ti 3 C 2 T x . The MoS 2 @Ti 3 C 2 T x coated Love wave humidity sensor presented an ultra-high sensitivity of 0.67 kHz/% RH in the wide humidity range from 11.3% RH to 97.3% RH, mainly attributed to the hierarchical structure of MoS 2 @Ti 3 C 2 T x with large specific surface areas, abundant adsorption sites and superhydrophilicity. Meanwhile, this Love wave humidity sensor showed fast response/recovery rates, great repeatability and long-term stability, indicating its great prospects in humidity detection applications.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wenlong Luo,Qianwen Liu,Baozhong Zhang,Jie Li,Ruidong Li,Tingxi Li,Zhiqiang Sun,Yong Ma
MXene nanosheets are susceptible to self-accumulation during operation, which significantly hampers their application. However, this issue can be effectively addressed through the introduction of intercalation materials. In this study, an MXene/reduced graphene oxide (rGO)/carbon nanotubes (CNTs) (MGC) film is prepared using vacuum-assisted filtration. CNTs and rGO nanosheets, as intercalation materials, play a crucial role in forming a stable interlayer structure with MXene nanosheets, resulting in an expansion of the MXene layer spacing and the creation of multi-directional stable ion transport channels. Consequently, a larger number of ion-accessible active sites are exposed. The prepared MGC film exhibits an impressive specific capacitance of 463.5F g −1 at a current density of 1 A g −1 . Furthermore, it is noteworthy that the asymmetric supercapacitor (ASC) assembled with the MGC film as the negative electrode and MnO 2 as the positive electrode demonstrates a large voltage window of 1.7 V, a high energy density of 33.95 Wh kg −1 at a power density of 814.8 W kg −1 , and an outstanding capacitance retention rate of 92.9% after 8000 cycles at 3 A g −1 . The optimization strategy for MGC electrodes not only showcases the feasibility of MXene development but also provides crucial technical support for the application of MXene in the emerging generation of portable and flexible wearable energy storage devices.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wei Zheng,Zequn Yang,Jiefeng Chen,Mingguang Zhang,Hongxiao Zu,Ruiyang Qin,Wenqi Qu,Jianping Yang,Lijian Leng,Hailong Li
Utilization of monolithic mineral sulfide-based sorbent for the fix-bed elemental mercury (Hg 0 ) removal is regarded as a predominant predicament in the field of Hg 0 abatement. In this work, a general and facile route was exploited to establish CuS particles decorated 3D porous Ti 3 C 2 T x MXene aerogel via divalent Cu 2+ cations induced assembly combined with subsequent high-temperature sulfurization treatment, during which, uniform CuS particles were homogeneously anchored throughout the Ti 3 C 2 T x substrate. The obtained 3D CuS/Ti 3 C 2 T x MXene aerogel exhibited satisfactory textural property, hierarchical pore structure and strong interaction between Ti 3 C 2 T x MXene and CuS. Meanwhile, the inherent restacking of Ti 3 C 2 T x MXene nanosheet and serious agglomeration of CuS can also be effectively avoided in the formation of aerogel. Those structural advantages originating from this novel gelation process favorably contributes to satisfactory Hg 0 mass transfer and sufficient utilization of CuS active ligands, which largely strengthens Hg 0 removal performance and broadens the fix-bed application of mineral sulfides. Consequently, the Hg 0 capture capacity and adsorption rate of CuS/Ti 3 C 2 T x MXene aerogel reached 90596.4 g m −3 and 120.64 g m −3 min −1 , respectively, far outbalancing those of the reported in-situ selenized copper foam with excellent Hg 0 removal activity. The impressive Hg 0 sequestration performance is attributed to its relatively large specific surface area, layered pore channel, and highly dispersed CuS particles, largely boosting Hg 0 mass transfer and following sequestration. Moreover, other mineral sulfides/Ti 3 C 2 T x MXene aerogels can also be constructed by just replacing divalent metal cations, which makes the initial effort towards the fix-bed utilization of mineral sulfides-based aerogel for vapor-phase Hg 0 immobilization.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Tianze Zhang,Rui Wang,Junpeng Xiao,Lu Li,Xinzhi Ma,Weiguang Zhang
Benefitting from the large interlayer spacing, ultrahigh conductivity and abundant surface chemistry, Ti 3 C 2 T x has been a promising electrode material for supercapacitors (SCs). CoS has attracted much attention due to its low cost, weak Co-S bond and relatively high theoretical capacity. Herein, CoS nanowires were grown on few-layered Ti 3 C 2 T x by one-step solvothermal method as a SC electrode. Within the composite, Ti 3 C 2 T x could function as conductive network and buffer matrix to provide ultra-fast electronic transport and relieve volume expansion of CoS nanowires. Simultaneously, the active CoS nanowires with high capacitance act as interlayer spacer to restrain the restacking of Ti 3 C 2 T x nanosheets . As a result, CoS/Ti 3 C 2 T x -5 electrode exhibits a remarkable improvement specific capacitance of 528 F g −1 at a current density of 1 A g −1 and ultrahigh capacitance retention of 99.3% after 20 000 cycles at a current density of 10 A g −1 . The attempts and efforts made in this work provide a prototype for achieving excellent electrochemical properties .
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Wangyan Lv,Yingchao Yue,Ming Nie,Changchun Zhao,Jia Wei,Jianjun Cheng
Although Ti 3 C 2 T x exhibits promising potential for corrosion protection, its susceptibility to oxidation significantly limits the practical applications. In this study, 3-aminopropyl-triethoxysilane (APTES) was employed to covalently graft onto Ti 3 C 2 T x surface, thereby preserving its layered structural integrity. Based on density-functional-theory calculations, we systematically elucidated the interaction mechanisms between amino functional group and various surface terminations of Ti 3 C 2 T x at the electronic structure level. Experimental results demonstrate that as-prepared APTES@Ti 3 C 2 T x hybrid significantly enhances the anti-corrosion performance of the epoxy coating. Electrochemical tests revealed that after 30 days of immersion in a 3.5 wt.% NaCl solution, APTES@Ti 3 C 2 T x /EP composite coating maintained a high low-frequency impedance modulus (|Z| f=0.01 Hz ) of 10 7 Ω·cm², which was one order of magnitude higher than that of the pure epoxy coating. Furthermore, the wet adhesion strength of composite coating reached 4.82 MPa, representing a 145.9% improvement compared to the control group. This study not only confirms the effectiveness of the APTES encapsulation strategy in improving the stability of MXene but also provides a new approach for designing long-scale, superior corrosion-resistant composite coatings.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Yongjin Tang,Jin Huang,Wei Xiao,Yang Li,Shuoqing Yan,Jun He
Layered MXene-based magnetoelectric composites have been extensively investigated and applied as microwave absorbing (MA) materials. Although multicomponent composite strategies have been proven to significantly improve the MA performance of materials, the fine structural design and optimization of the functional synergy of absorbers at intricate environments remain scientific issues worthy of further exploration. In this study, FeCo@C/Ti3C2Tx MXene composites were synthesized through a combination of chemical vapor deposition and electrostatic self-assembly techniques. The core–shell structure of ultrafine FeCo@C nanoparticles, with an average diameter of 13.51 nm, has effectively mitigated the adverse effects of harsh environmental conditions due to chemical stability of the carbon layer. Furthermore, the integration of ultrafine FeCo@C nanoparticles with a low filler loading contributed to the overall lightweight characteristic. Notably, the FeCo@C/Ti3C2Tx MXene composites with a 20 wt % filling ratio exhibit a minimum reflection loss (RLmin) of −31.6 dB at 1.7 mm and an effective absorption bandwidth of 5.76 GHz at 2.4 mm. The corresponding absorbing coating achieves a maximum reduction in the radar cross-section of 18.86 dBm2. The FeCo@C/Ti3C2Tx MXene composites exhibit the potential for applications in challenging environments, including high-temperature and humid conditions.
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Nanomaterials
·
2020
·Vol. 10
·期 9
·1666
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IF 4.324
Hui Liu,Ling Li,Guangzhen Cui,Xinxin Wang,Zhi Zhang,Xuliang Lv
As a typical two-dimensional material, MXene possesses excellent conductivity and tunable interlayer space, which makes it have an impressive development potential in the field of electromagnetic (EM) waves absorbing materials. In this work, we fabricated a sandwich structure CoS@Ti3C2Txcomposite using a simple solvothermal process. The CoS nanoparticles are anchored on the Ti3C2TxMXene sheets, forming a heterolayered structure. The results demonstrate that the CoS@Ti3C2Txcomposites with the sandwich-like architecture showed excellent EM absorbing performance due to the synergistic effects of the conductivity loss, interface polarization, and dipole polarization. When the doping ratio was 40 wt %, the maximum reflection loss value of CoS@Ti3C2Txwas up to –59.2 dB at 14.6 GHz, and the corresponding effective absorption bandwidth (below –10 dB) reached 5.0 GHz when the thickness was only 2.0 mm. This work endows a new candidate for the design of MXene-based absorption materials with optimal performance.Keywords:MXene Ti3C2Tx;CoS nanoparticle;dielectric loss;microwave absorption
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ELECTROCHIMICA ACTA
·
2022
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IF 7.336
Zhiyi Wu,Shan Zhu,Xiangren Bai,Ming Liang,Xiang Zhang,Naiqin Zhao,Chunnian He
Benefiting from the unique chemical properties and the adjustable layered spacing, MXenes have been paid more attention to the field of energy storage and conversation, especially towards constructing hybrid structure for the use of Li-ion battery anodes. However, most MXene-based composites are achieved by the ex-situ mixing method on the basis of acid-etched MXene, which makes it extremely hard to maintain a good structural stability in the service process. Herein, we proposed a novel one-step in-situ strategy, i.e. SnCl 2 molten salt reaction with Ti 3 AlC 2 for synthesizing Sn-nanoconfined Ti 3 C 2 T x MXene composites. During the synthesis process, SnCl 2 not only executed as the Lewis acid to etch Ti 3 AlC 2 for obtaining Ti 3 C 2 T x MXene, but could also be in-situ transformed to Sn nanoparticles confined between the Ti 3 C 2 T x MXene layers. The 2D layer-confined effect inhibited the spontaneous coarsening of metal Sn at high temperature as well as the huge volume expansion during the electrochemical cycles. Meanwhile, the in-situ formed Sn nanoparticles as pillar played a decisive role in enlarging interlayered active spacing of Ti 3 C 2 T x MXene for Li-storage. As a result, the surprising enhancement of electrochemical Li-storage performances could be achieved during long-term cycling. This work provides a novel route to explore the application of MXene based on the molten salt methods.
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LANGMUIR
·
2025
·
IF 3.9
Qing Feng,Mingyuan Dou,Zhenpeng Li,Jing Yang,Shuai Zou,Lixia Wei,Fuchuan Huang
The two-dimensional nano MXenes have unique microstructures and physicochemical properties, showing great potential in enhancing or replacing traditional metal processing lubricants. Here, a stable oil-in-water emulsion was constructed by coassembling Ti3C2TX MXene modified with phosphonic acid containing C10 alkyl chain and Tween 80 at the oil–water interface. The emulsion exhibits efficient friction-reducing and antiwear performance as well as corrosion resistance. The effect originates from the formation of a physical adsorption film and tribochemical reaction film stabilized by the interlocking of long carbon chains on the friction interface. This study provides a model of “material functionalization-interface synergy” for developing metal processing lubricants.
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DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Marium Mushtaq,Tingkai Zhao,Abdul Jalil,Syeda Khair Un Nisa,Xianghong Li
Suppressing secondary electromagnetic reflection while maintaining high shielding effectiveness remains a central challenge for conductive MXene-based electromagnetic interference (EMI) shields. Here, 2D/0D MXene/BaFe 12 O 19 nanostructures were constructed by electrostatic self-assembly. The assembly combined negatively charged MXene nanosheets with poly(diallyldimethylammonium chloride) (PDDA)-functionalized BaFe 12 O 19 nanoparticles. This surface-charge-mediated assembly suppresses MXene restacking, creates dielectric–magnetic heterointerfaces, and systematically regulates the complex permittivity and permeability. The incorporation of BaFe 12 O 19 moderates the excessive permittivity of MXene and introduces resonance-type magnetic loss. These interrelated effects thereby alleviate the dielectric–magnetic imbalance, allowing more incident electromagnetic energy to enter and be attenuated within the shield. At a thickness of 1 mm paraffin-based toroidal specimen, MXF-3 reaches a maximum total shielding effectiveness (SE T ) of 58.0 dB at 10 GHz, with an absorption shielding effectiveness (SE A ) = 48 dB and reflection shielding effectiveness (SE R ) = 10 dB. Spin-polarized density functional theory calculations reveal orbital coupling and static charge redistribution at the MXene/BaFe 12 O 19 interface, providing electronic-structure insight into the interfacial interactions. These results demonstrate that electrostatic self-assembly is an effective route for preparing powder-based MXene/hexaferrite functional fillers for X-band EMI shielding. Download: Download high-res image (292KB) Download: Download full-size image
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Heliyon
·
2024
·
IF 3.4
Song Lin,Lixin Wen,Hong Zhao,Donghua Huang,Zuwei Yang,Qinge Zou,Ling Jiang
Since the p53 protein is an important promising biomarker of lung tumor and colorectal tumor, it is very essential to design a highly effective mean to monitor the degree of p53 for the early clinical analysis/therapy of the related tumors. In this work, a sandwich-type electrochemical immunosensing (SES) platform is proposed for the first time to detect p53 via synthesizing Ti 3 C 2 T x MXene nanoribbons (Ti 3 C 2 T x Nb) and ferrocene/gold nanoparticles (Fc/Au) respectively as the sensing substrate and signal-amplifier. The superior electrical property and large surface area of Ti 3 C 2 T x Nb are beneficial to assemble the initial p53-antibodies (Ab 1 ), while the synthesized Fc/Au is devoted to assemble the secondary p53 antibodies (Ab 2 ) and gives a magnified signal. By adopting the Fc molecules as the probes, the experiments reveal the response current of Fc resulted from the SES structure increases along with the p53 increase from 1.0 to 200.0 pg mL −1 . A considerable low detection limit (1.0 pg mL −1 ) is achieved after optimizing several key conditions, it is thus confirmed the as-proposed SES mean exhibits significant application in the detection of p53 protein and other targets.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Mengyao Han,Cuiling Wu,Jingyu Song,Lushun Yang,Ting Zhang,Yajie Chou,Xueyan Du
With the proliferation of electronic devices and wireless technologies, Electromagnetic Interference (EMI) has become a critical global concern. Correspondingly, the development of efficient EMI shielding materials with strong electromagnetic wave absorption and reflection is imperative. This study presents the fabrication of sandwich-structured composite films (SCFs) utilizing regenerated cellulose (RC) as the matrix, incorporating Ti 3 C 2 T x MXene and Fe 3 O 4 nanoparticles (Fe 3 O 4 NPs) as functional fillers. The SCFs (MXene/RC-Fe 3 O 4 /RC-MXene/RC) were fabricated using an immersion phase conversion method followed by mechanical pressing techniques. The resulting SCFs exhibit a conductivity of 23.8 S/m and a maximum EMI shielding effectiveness (SE) of 32.52 dB. This performance is attributed to the innovative sandwich architecture, which employs a “reflection-absorption-reflection” mechanism to attenuate electromagnetic waves. In addition, MXene is effectively dispersed in the cellulose matrix, enhancing the mechanical properties of the composite films. Notably, increasing the MXene content from 10 wt% to 40 wt% resulted in a tensile strength increase from 9.42 MPa to 17.10 MPa. This research elucidates a robust and scalable approach for the development of advanced electromagnetic shielding materials.
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