Sensing and Bio-Sensing Research
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2025
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IF 4.9
Xiaohua Jiang,Zhiwen Lv,Changquan Rao,Xiaowen Chen
Foodborne pathogenic bacteria pose severe threats to human health and often coexist within the same environment. Thus, developing a sensitive and reliable method for their simultaneous detection is critically important. In this study, we first synthesized Ti 3 C 2 T x MXene nanoribbons/copper nanoparticles (Ti 3 C 2 T x NR/Cu) via a simple self-reduction method to modify electrodes for signal amplification. Concurrently, we constructed UiO-66 MOFs encapsulated with distinct probes and gated by target-specific aptamers (Apts) as bio-gatekeepers. We then proposed an innovative electrochemical strategy for the simultaneous detection of two model pathogens: Staphylococcus aureus ( S. aureus ) and Listeria monocytogenes (LM). The Ti 3 C 2 T x NR/Cu nanohybrid synergistically enhanced the current signals of the probes by leveraging the combined advantages of Ti 3 C 2 T x NR and Cu nanoparticles. For S. aureus detection, methylene blue (MB) and S. aureus -specific aptamer (S-Apt) were employed as the probe and bio-gatekeeper, respectively, while ferrocene (Fc) and LM-specific aptamer (L-Apt) were used for LM. Upon target binding, the Apts dissociated from the UiO-66 MOFs, releasing the encapsulated probes (MB or Fc). The resulting current signals, measured at the Ti 3 C 2 T x NR/Cu electrode, enabled the quantitative and simultaneous detection of both pathogens. This platform's modular design allows easy adaptation for detecting other bacteria by simply replacing the aptamers, offering broad potential applications in controlling food safety.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Haojie Zeng,Qi Wang,Dingyu Xing,Jiajia Yuan,Feiyun Sun
To solve the freshwater dilemma, photothermal membrane distillation (PMD) has become a promising and sustainable method for desalination and wastewater purification. Ti 3 C 2 T x has attracted much attention in the field of Janus PMD membrane preparation due to its hydrophilic surface and high photothermal conversion efficiency. However, the shortcomings of easy stacking and surface light reflection limit its application. In this work, electrostatic adsorption self-assembly between Ti 3 C 2 T x and UiO-66-NH 2 by pH adjusting is designed, and the Ag-modified Ti 3 C 2 T x aims to significantly improve the photothermal conversion efficiency-Ag@Ti 3 C 2 T x /UiO-66-NH 2 membrane. Compared to the origin Ti 3 C 2 T x membrane, the photothermal layer containing UiO-66-NH 2 contributes to the unimpeded transport of water, and this 3D photothermal layer structure can maximize the capture and absorption of light, which contributes to enhanced high light absorption, photothermal conversion ability and more efficient mass transfer. Thus, a consistently high vapor flux of 1.13 kg/m 2 h and photothermal efficiency over 77.3 % were synchronously obtained, under one solar irradiation. Specifically, Ag@Ti 3 C 2 T x /UiO-66-NH 2 membrane meanwhile exhibits commendable water permeate production and high stability in anti-scaling tests, as well as reliable physical stability, which offers great application potential in PMD process. Our work provides a novel strategy for constructing PMD membrane with stably enhanced mass transfer and photothermal properties to satisfy real application.
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APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Jinrong Chuan,Shengzhi Duan,Yumei Li,Linping Liu,Jiyun Gao,Chenhui Liu
Microwave-assisted molten salt etching enables rapid, green preparation of Ti 3 C 2 T x from Ti 3 AlC 2 in 15 min. • In situ sulfidation achieves one-step construction of SnS 2 /Ti 3 C 2 T x heterojunctions. • SnS 2 /Ti 3 C 2 T x shows a 472% NO 2 response at room temperature, with 39.73 ppb LOD and good stability. • DFT calculations reveal band regulation at heterojunctions, enhancing NO 2 adsorption via p-type channels. MXenes have attracted attention in room-temperature gas sensing due to their high conductivity and tunable surface groups. However, conventional preparation often relies on fluoride-containing etching and stepwise processes, which are not only cumbersome but also hazardous. Herein, a microwave-assisted Lewis acidic molten salt etching strategy was developed to efficiently etch Ti 3 AlC 2 within 15 min, accompanied by the simultaneous in situ growth of Sn nanoparticles on Ti 3 C 2 T x . Subsequent in situ sulfidation formed SnS 2 /Ti 3 C 2 T x heterojunctions. The material exhibits outstanding NO 2 -sensing performance at room temperature: a response of 472% toward 100 ppm NO 2 , together with excellent selectivity, long-term stability, and a low limit of detection (LOD) of 39.73 ppb. The enhancement is ascribed to the SnS 2 /Ti 3 C 2 T x heterointerfaces and abundant adsorption sites derived from the enlarged specific surface area. DFT calculations reveal that band modulation induced by work function differences creates p-type conductive channels, clarifying the sensing mechanism. This study offers a green, rapid fabrication approach for high-performance room-temperature gas sensors. Download: Download high-res image (206KB) Download: Download full-size image
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PROGRESS IN ORGANIC COATINGS
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2026
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IF 7.9
Chunlin Chen,Beibei Ren,Fei Zhong,Guoqing Xiao,Xinyu Bai,Guirong Zhao,Chunyan Chen,Chuanlin Mou
In this study, using Ti 3 C 2 T X (MXene) as a substrate, Co-doped polydopamine (PDA@Co), phytic acid (PA), and flake-like Ni-Fe/LDH were loaded onto the MXene surface via hierarchical assembly to prepare a novel multifunctional flame retardant (MPPA@Ni-Fe/LDH). Among these, MXene and LDH formed a multi-level physical barrier that suppressed flame spread and delayed the escape of oxygen and combustible gases. The introduction of PDA and PA improved the interfacial dispersion of the material, promoted the dehydration and carbonization of the matrix, and interrupted the combustion chain reaction, thereby synergistically constructing a dense C-N-P flame-retardant network. Furthermore, the presence of multiple transition metals further enhanced catalytic carbonization at high temperatures, and the generated metal oxides also improved the thermal insulation and strength of the char layer. The results of a series of fire tests demonstrated that the backside temperature of steel plates coated with MPPA@Ni-Fe/LDH/EP was as low as 168.9 °C, with expansion heights and expansion rates of 26.4 mm and 20.31, respectively, and the smoke density rating reached a minimum value (35.4%). This indicates that the composite coating exhibited excellent thermal insulation, expansion, and smoke suppression properties. In TGA analysis, the high char yield of the MPPA@Ni-Fe/LDH/EP sample confirmed its high thermal stability and the effective catalytic carbonization ability of the multi-metal system. Furthermore, microscopic analysis of the carbon residues revealed that the MPPA@Ni-Fe/LDH-filled coating exhibited the most intact and dense carbon layer, providing favorable conditions for its excellent thermal insulation performance. This novel flame retardant, incorporating a multi-layer barrier effect, high phosphorus and nitrogen content, and strong catalytic carbonization capability, offers a new approach for developing multifunctional intumescent flame-retardant coatings.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Tao Huang,Wei Xiong,Xue Ye,Zhencheng Huang,Yuqing Feng,Jianneng Liang,Shenghua Ye,Shaoluan Huang,Yongliang Li,Xiangzhong Ren,Xiaoping Ouyang,Qianling Zhang,Jianhong Liu
We constructed an artificial polymer/two-dimensional Ti 3 C 2 T X (MXene) solid electrolyte interphase (SEI) on a Li metal surface via an in-situ polymerization strategy. The polymer layer provides excellent interface contact and outstanding adaptability for the volume expansion of Li metal, decreasing interface impedance. On the other hand, the two-dimensional MXene with a low Li nucleation energy barrier is beneficial for uniform Li deposition and restraint of interfacial side reactions. In this work, a dense and durable MXene-integrated SEI between the Li metal anode and solid-state electrolyte (SSE) interface is constructed to render the Li/SSE/Li cell to maintain a stable polarization voltage of approximately 50 mV at a capacity of 0.50 mAh cm −2 for over 1000 h. It enables the Li/SSE/LiFePO 4 cell to deliver a capacity of 130.1 mAh g −1 at 1C with a capacity retention of 91.4% after 900 cycles. Therefore, we believe that this facile in-situ polymerization method for constructing a layer of polymer/MXene SEI at the interface between Li metal anodes and SSE can promote the practical applications of Li metal batteries.
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高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Xiaosheng Du,Jiuao Wang,Linzhao Jin,Sha Deng,Yi Dong,Shaojian Lin
The exploitation of from-stable phase change materials (PCMs) with superior energy storage capacity and excellent solar–thermal conversion performance is crucial for the efficient exploitation of solar energy. Herein, 2D-layered polymerized dopamine-decorated Ti3C2Tx MXene nanosheets (P-MXene) with superior photothermal effects and excellent oxidation stability were synthesized from Ti3AlC2 particles by the selective etching and self-polymerization of dopamine. Then, novel biomass-derived PCM composites, eMPCMs, were fabricated by impregnating erythritol into P-MXene/cellulose nanofiber (CNF) hybrid aerogels. The porous and interconnected 3D aerogels adequately support erythritol and resist liquid leakage during thermal storage. Differential scanning calorimetry (DSC) results showed that the eMPCMs based on P-MXene/CNF aerogels exhibited an extremely high thermal storage density (325.4–330.6 J/g) and excellent PCM loading capacity (up to 1929%). The introduction of P-MXene nanosheets into eMPCMs significantly increased the solar–thermal conversion and storage efficiency, solar–thermal–electricity conversion capacity, and thermal conductivity of the synthesized PCM composites. Moreover, the P-MXene/CNF hybrid aerogel-based PCM composites possessed excellent long-term thermal reliability and thermostability. Hence, the synthesized eMPCMs reveal tremendous potential for efficient solar–thermal storage fields.
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PubMed
高影响因子
CERAMICS INTERNATIONAL
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2021
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IF 4.527
Yang Yue,Yanxiang Wang,Xiaodan Xu,Chengjuan Wang,Zhiqiang Yao,Dongming Liu
The potential of two-dimensional layered MXenes in electromagnetic wave (EMW) absorption needs further development. Herein, we carried out the in situ growth of carbon nanotubes (CNTs) on the surface of Ti 3 C 2 T x MXene at ultra-low temperature via chemical vapor deposition . The obtained CNTs exhibited a bamboo-like structure and were accompanied by helical carbon nanofibers . The ultra-low temperature solved the problem that the high temperature required in the traditional CNT growth process would destroy the structural integrity of MXene. The lush CNT forest cross-linked the MXene layers, transforming the two-dimensional layered structure into a three-dimensional conductive network, providing abundant conductive channels for carriers, optimizing the impedance matching of the CNT/MXene hybrid, and resulting in a significant dielectric loss. The as-prepared CNT/MXene hybrid exhibited a minimal reflection loss of −52.56 dB (99.9994% EMW absorption) in the X-band. This work proposes a new idea to enhance the EMW absorption properties of Ti 3 C 2 T x MXene and fabricate high-performance MXene-based EMW absorbers.
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高影响因子
ENERGY
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2023
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IF 9
Hao Yue,Yangcen Ou,Jiuao Wang,Haibo Wang,Zongliang Du,Xiaosheng Du,Xu Cheng
The development of form-stable phase-change material (PCM) with solar-thermal harvest, electromagnetic interference (EMI) shielding, and flame-retardancy is crucial for efficient building energy management and conservation. Herein, novel Ti 3 C 2 T x MXene/delignified wood supported form-stable phase-change composites (PMPCMs) with superior solar-thermal conversion efficiency, highly EMI shielding effects, and excellent flame-retardancy were fabricated by alkaline boiling delignification , ammonium dihydrogen phosphate (ADP) and MXene deposition, and melted n -octadecane impregnation. Benefiting from the powerful surface tension and capillary force of the wood-based support materials, PMPCMs can effectively encapsulate the melted n -alkane molecules and inhibit their leakage. The differential scanning calorimetry results showed that PMPCMs possessed superior n -octadecane encapsulation yield and high thermal energy storage density (166.9–191.6 J/g). Decorating delignified wood by MXene significantly improved the solar-thermal storage efficiency (up to 88.4 %) and EMI shielding performance of PMPCMs. The average EMI shielding effectiveness of PMPCM-10 was enhanced to 34.12 dB in X-band frequency range of 8.2–12.4 GHz. Moreover, with the introduction of the flame-retardant ADP, the peak heat release rate (pHRR) and total heat release (THR) of PMPCMs decreased noticeably, demonstrating the enhanced flame retardancy of delignified wood supported phase-change composites. In summary, PMPCMs exhibited superior application prospects in building energy management and electromagnetic shielding fields.
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高影响因子
Journal of Physical Chemistry C
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2020
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IF 4.189
Jin Wang,Fudi Wang,Bing Yang,Jiang Wu,Mengtao Tian,Jiani Zhu,Xudong Wang,Lei Wang
A lamellar membrane assembled by parallel restacking of two-dimensional nanosheets provides a novel platform for studying the electrostatic manipulation of ion mobility under angström-scale confinement. The membrane nanostructure in aqueous solution is unstable due to intercalation. However, because accurate measurements of structural changes under different charged conditions are difficult, their effect on the ion modulation was seldom fully addressed, and the electrostatic modulation mechanism was not good. Here, we report the efficient manipulation of ion diffusion in the confined channels through a Ti3C2Tx membrane and gain insight into the mechanism by an in situ measurement of the lamellar nanostructure using an electrochemical quartz crystal microbalance with dissipation (EQCM-D). By precisely tuning the external potential directly applied to the membrane, the ion permeation rate can be effectively and reversibly increased by 6 times or decreased by 15 times. The EQCM-D measurement provides empirical evidence to demonstrate that the anomalous ion-flow modulation is determined by both the channel diameter and an ion rearrangement in the electrical double layers (EDLs), particularly, in the Stern layers. Although the channel expanded at low negative voltage, the ion permeation rate decelerated due to the counterion distribution in the Stern layers.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2020
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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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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
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IF 8.3
Dongya Guo,Binzhe Tan,Xiaojie Jiang,Guangyu Gao,Yu Lin
With the demand for further miniaturization and higher frequency operation of electronic devices, polymer films with high thermal conductivity and electromagnetic interference (EMI) shielding effectiveness (SE) are urgently required. Herein, polyimide (PI)/boron nitride nanosheets (BNNS) aerogels with oriented porous structure are fabricated by unidirectional-freezing and freeze-drying methods. Subsequently, hierarchical PI/BNNS/Ti 3 C 2 T x composite films with consecutively electrically and thermally conductive networks are successfully prepared via a unidirectional PI/BNNS aerogels-assisted immersion and hot-pressing strategy. Owing to the three-dimensional conductive dual networks of BNNS and Ti 3 C 2 T x , the composite film exhibits excellent thermal conductivity with the maximum in-plane value of 4.73 W/(m·K), increased by 456 % compared to pure PI film. Moreover, the conductive network of Ti 3 C 2 T x is conducive to the excellent EMI shielding performance, endowing the PI/BNNS/Ti 3 C 2 T x composite film with an outstanding EMI SE value of 49.2 dB at 8.2 GHz with a low MXene content of 6 wt% and thickness of 300 μm. Furthermore, the composite film shows the superior Joule heating performance with fast thermal response and sufficient reliability. Therefore, the resulting composite film exhibits excellent thermal conductive, EMI shielding and Joule heating performance, which enables the potential application of multifunctional composites for thermal management and EMI shielding.
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高影响因子
Surfaces and Interfaces
·
2025
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IF 6.3
Jingyue He,Jiaheng Wang,Wei Wang,Jie Zhou,Linheng Zhao,Songyuan Wu,Wenqiang Chen,Jiaxu Gong,Yatang Dai
Aluminum alloys are widely used in marine engineering due to their excellent strength-to-weight ratio. However, these materials are susceptible to localized corrosion phenomena, especially pitting and intergranular corrosion in corrosive marine environments, which greatly reduces their durability. To address this challenge, we have developed an innovative GO/MXene@ZIF-8-BTA nanocomposite epoxy coating system that strategically integrates multilayered GO/MXene heterostructures with ZIF-8 nanoparticles encapsulated with benzotriazole (BTA). Comprehensive characterization of physicochemical properties, colloidal stability, surface wettability, and corrosion protection properties confirmed the homogeneous dispersion and excellent compatibility of the nanocomposites. Electrochemical impedance spectroscopy (EIS) showed a low-frequency impedance modulus of 1.08 × 10 8 Ω•cm 2 , which is two orders of magnitude higher than that of the pristine epoxy resin after 21 days of immersion in a 3.5 wt% NaCl solution. The autonomous self-healing function was verified by a scratch test, where the corrosion rate was suppressed to 0.152 mpy in 48 hours (protection efficiency of 84.41%). Complementary density-functional theory (DFT) simulations provide atomic-scale insight into the energetics of adsorption, suggesting a pioneering approach to the long-term protection of aluminum alloys under extreme ocean service conditions.
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