Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-22
·
IF 36.3
Shao Runze,Wang Guilong,Chai Jialong,Lin Jun,Zhao Guoqun,Zeng Zhihui,Wang Guizhen
The Janus-type multifunctional ultra-flexible polytetrafluoroethylene-carbon nanotube-Fe 3 O 4 /MXene (FCFe/M) membranes were fabricated via a shear-induced in situ fibrillation technique followed by vacuum-assisted filtration.
Thanks to the strategic distribution of the MXene conductive reflection layer and the silk-like FCFe electromagnetic wave’s absorption layer, the membranes achieve robust electromagnetic interference shielding and effective antireflection through the absorption-reflection-reabsorption mechanism.
The membranes exhibit exceptional thermal management performance, including efficient heat dissipation and electrothermal/photothermal conversion capabilities, further enhancing their promising potential for applications in flexible wearable technologies.
研究领域:
材料科学
·
电子工程
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DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Xiao-Hong Wen,Xue-Feng Zhao,Xiao-Huan Wang,Yang Wang,Jing-Chun Guo,Hou-Guang Zhou,Chuan-Tao Zuo,Hong-Liang Lu
Amyloid β protein oligomer (AβO) has been found to be a crucial biomarker of Alzheimer’s disease (AD). Exploring an accurate detection method of AβO is of great significance for early AD diagnosis and treatment. Herein, a fluorescent biosensor for AβO detection is designed. It integrates fluorescence resonance energy transfer (FRET)-based fluorescence detection with a poly(dimethylsiloxane) (PDMS)-based microfluidic chip. The carboxyl fluorescein-modified AβO aptamers are employed as the fluorophore, and three-dimensional Fe3O4/MXene nanospheres are used as the fluorescence quencher for the first time. Moreover, the PDMS-based multichamber microfluidic chip serves as a fluorescence detection platform. The Fe3O4/MXene-based nanosphere-based biosensor shows an excellent linear relationship between the fluorescence intensity and the logarithm of the AβO concentration in the range of 0.10–200 nM. The detection limit is ∼0.05 nM at the ultralow sample volumes of ∼4.50 μL. These results strongly show that the fabricated high-performance biosensor can be widely used in smart healthcare including but not limited to medical diagnosis, health monitoring, and biological studies.
研究领域:
生物医学工程
·
诊断学
·
神经科学
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高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 8
·1-11
·
IF 5.7
Fei Jianwen,Yang Wei,Dai Yin,Xu Wei,Fan Huizhu,Zheng Yani,Zhang Jun,Zhu Wanying,Hong Junli,Zhou Xuemin
A novel magnetic nanozyme Fe 3 O 4 @MXene-Au nanocomposite, which possessed higher peroxidase-like activity than that of Fe 3 O 4 nanoparticles and Fe 3 O 4 @MXene nanocomposites, was developed. The outstanding magnetic properties of the nanozyme endowed it with the ability of simple and rapid separation, achieving great recyclability. Based on Fe 3 O 4 @MXene-Au nanocomposites and glucose oxidase (Glu Ox), a highly selective colorimetric biosensor for glucose detection was developed. Fe 3 O 4 @MXene-Au nanocomposites can catalyze H 2 O 2 produced from glucose catalyzed by glucose oxidase to ·OH and oxidize colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxidized TMB (oxTMB) with a significant absorbance at 652 nm. The linear range of glucose was 0–1.4 mM under optimal conditions, with a limit of detection (LOD) of 0.11 mM. Glucose in human whole blood was successfully detected with satisfactory recoveries. Furthermore, a facile agarose hydrogel detection platform was designed. With smartphone software, glucose detection can be realized by the agarose hydrogel platform, demonstrating the potential in on-site and visual detection of glucose. Graphical abstract
研究领域:
纳米技术
·
生物传感器
·
分析化学
·
即时检测
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Haofei Sima,Bo Liu,Xiaolin Shi,Zifei Zhao,Chaozong Liu,Chunling Zhang
In light of the exponential growth of flexible human-computer interactions and telecommunications, it is becoming increasingly important to develop a high-sensitivity strain sensor to monitor human movement. Herein, the biocompatible, adhesive, and flexible Tannic acid-Fe 3 O 4 @MXene-poly(methacryloxyethyl sulfobetaine/acrylamide) (TFM) hydrogel has been prepared to realize the dual-functional applications in strain sensitive sensor and electromagnetic interference (EMI) shielding. The polymer network and 2D conductive filler MXene together construct the conductive network inside the hydrogel. The interpenetrating network and hydrogen bond between poly(acrylamide) and poly(methacryloxyethyl sulfobetaine) chain enhance the mechanical property of hydrogel, which is also improved by the complexation between Fe 3 O 4 and the catechol groups of tannic acid. Benefiting from the excellent electrical conductivity (∼1.33 S/m) and mechanical property of the TFM hydrogels, the strain sensor displays compressive strain (∼77.6 %) and elongation (∼308.5 %), adhesion (∼16 kPa), compression sensitivity (∼42.6 Pa −1 ), gauge factor (GF = 2.38), and cyclic stability (∼50 cycles). TFM hydrogels can monitor strain distribution sensing, pulse beating and human movement detection. Moreover, the TFM hydrogel exhibits an absorption-predominant EMI shielding performance with an effective value of ∼25.2 dB. This work provides a new inspiration for the development of multifunctional hydrogels in the fields of artificial intelligence, human-computer interaction, and EMI shielding technology.
研究领域:
材料科学
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电子学
·
生物医学工程
·
人机交互
·
人工智能
·
电磁干扰屏蔽
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高影响因子
COMPOSITES COMMUNICATIONS
·
2026
·
IF 8.6
Jiang Guo,Xiuyun Ma,Shaohua Xi,Yong Mao,Yan Zhang,Yukun Sun,Wenling Wu,Jianfeng Zhu
Polymer composites with room temperature magnetoresistance (MR) are attractive for emerging magnetic sensors and information-storage devices in the era of the Internet of Things. In this work, the magnetorsistive polyaniline (PANI) functionalized magnetic Ti 3 C 2 T x Composites were prepared by solvothermal and in-situ polymerization method. By decorating non-magnetic Ti 3 C 2 T x with magnetic Fe 3 O 4 particles and tuning the Fe 3 O 4 loading on Ti 3 C 2 T x , the room temperature magnetoresistance can be effectively controlled. The Ti 3 C 2 T x /PANI (T/P) composites exhibit positive MR of 4.65% at 2 T, while the Fe 3 O 4 –Ti 3 C 2 T x /PANI (FT/P) composites demonstrates negative MR of -11.13% at 2 T with 60 wt% Fe 3 O 4 loading in Fe 3 O 4 –Ti 3 C 2 T x . Structural and morphological characterizations (SEM, TEM, XRD, FT-IR and XPS) confirm the successful fabrication of FT/P composites. The positive MR in T/P is well described by the wave-function shrinkage model, and the negative MR in FT/P composites is quantitatively fitted by the forward interference model. The localization length ( a 0 ), hopping distance (R hop ) and density of states at the Fermi level (N(E F )) are evaluated. The localization length decreases with increasing magnetic field for all samples and is significantly larger in T/P than in FT/P composites. This work demonstrates a simple and effective strategy to achieve tunable negative MR at room temperature PANI composites for magnetic sensing and data-storage applications.
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TALANTA
·
2024
·
IF 5.6
Kai Hu,Xiaobing Liu,Huifen Ma,Di Zhao,Junying Song,Huahui Zeng,Zhenqiang Zhang
A magnetic MXene aerogel (Fe 3 O 4 @MXene@PEI) was prepared by crosslinking amino modified MXene with polyethyleneimine using epichlorohydrin as a cross-linker. Adsorption properties of Fe 3 O 4 @MXene@PEI aerogel for phenolic acids were evaluated by adsorption kinetics and isotherms experiments, showing that the high adsorption affinity was governed by multilayer chemisorption process. An efficient MSPE/HPLC method was developed for the determination of phenolic acids with excellent selectivity, good linearity (0.025–5.0 μg mL −1 ), low LODs (0.007–0.017 μg mL −1 ), and satisfactory recoveries (80.0–120.0 %). Moreover, the antioxidant activity of the Fe 3 O 4 @MXene@PEI purified compounds was superior to that of the conventional method as demonstrated by the results of scavenging experiments on 2,2 -diphenyl-1-picrylhydrazyl radical scavenging assay. Finally, 65 organic acids were identified in the Fe 3 O 4 @MXene@PEI treated honeysuckle extracts by UHPLC-Q-Exactive Orbitrap MS/MS analysis. The proposed sorbent exhibits remarkable promise for the selective separation and purification of organic acids from herbal products.
研究领域:
分析化学
·
植物化学
·
材料科学
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DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Yuan Yanru,Wang Yanxiang,Peng Xu,Guo Jinghe,Zhang Dong,Xu Ziyi,Gao Peiyi,Wang Xueqi,Zhang Can,Zhao Minchen
Flexible electronic devices require
electromagnetic interference
(EMI) shielding materials that combine effective shielding, mechanical
flexibility, and controlled surface reflection. However, highly conductive
Ti 3 C 2 T x MXene nanosheet
networks often induce excessive electromagnetic reflection, limiting
electromagnetic wave penetration and subsequent attenuation. To address
this limitation, a thickness-direction asymmetric bilayer architecture
was designed to reduce front-surface reflection and regulate electromagnetic
power distribution, rather than relying only on strong reflection
for EMI shielding. The bilayer consists of a Fe 3 O 4 /MXene/WPU incident layer with lower apparent electrical conductivity
and a MXene/WPU backing layer with higher apparent electrical conductivity
to regulate electromagnetic wave propagation and suppress transmission.
Nanometer-thick Ti 3 C 2 T x MXene nanosheets and Fe 3 O 4 nanoparticles
were incorporated into waterborne polyurethane (WPU), and the asymmetric
Fe 3 O 4 /MXene/WPU–MXene/WPU bilayer film
was fabricated by vacuum-assisted filtration and hot pressing. The
optimized FMW-M 15 film exhibited an X-band total shielding
effectiveness of 30.8 dB at a thickness of 60.0 ± 0.9 μm,
together with a tensile strength of 31.3 MPa and an elongation at
break of 192.5%. Under Fe 3 O 4 /MXene/WPU-side
incidence, the reflection, absorption, and transmission coefficients
were 0.7964, 0.2028, and <0.001, respectively. Reversing the incidence
direction increased reflection and reduced absorption, confirming
the direction-dependent electromagnetic response.
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高影响因子
LANGMUIR
·
2023
·
IF 3.9
Zhibiao Guo,Mingkun Wang,Lei Qiao,Jianxiang Wang,Zhiwei He
Frequent oil spills and the discharge of industrial oily wastewaters have become a serious threat to the environment, ecosystem, and human beings. Herein, a photothermal, magnetic, and superhydrophobic PU sponge decorated with a Fe3O4/MXene/lignin composite (labeled as S–Fe3O4/MXene/lignin@PU sponge) has been designed and prepared. The obtained superhydrophobic/superoleophilic PU sponge possesses excellent chemical stability, thermal stability, and mechanical durability in terms of being immersed in corrosive solutions and organic solvents and boiling water and being abrased by sandpapers, respectively. The oil adsorption capacities of the S–Fe3O4/MXene/lignin@PU sponge for various organic liquids range from 29.1 to 70.3 g/g, and the oil adsorption capacity for CCl4 can remain 69.6 g/g even after 15 cyclic adsorption tests. The separation efficiencies of the S–Fe3O4/MXene/lignin@PU sponge for n-hexane and CCl4 are higher than 98% in different environments (i.e., water, hot water, 1 mol/L NaOH, 1 mol/L NaCl, and 1 mol/L HCl). More importantly, the introduction of three light absorbers (i.e., Fe3O4, MXene, and lignin) into the S–Fe3O4/MXene/lignin@PU sponge shows a synergistic effect in the photothermal heat conversion performance, and the maximum surface temperature reaches 64.4 °C under sunlight irradiation (1.0 kW/m2). The separation flux of the S–Fe3O4/MXene/lignin@PU sponge for viscous LT147 vacuum pump oil reaches 35,469 L m–2 h–1 under sunlight irradiation, showing an increase of 27.3% compared to that of oil adsorption processes without the photothermal effect. Thus, the rational design of superhydrophobic sponges by introducing proper photothermal heat absorbers provides new insights into facile and cost-effective preparation of sponges for efficient oil/water separation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Daen Qin,Chengyu Liu,Kaili Song,Seeram Ramakrishna
Hydrogels are ideal for flexible sensors due to their outstanding advantages such as softness, biocompatibility, and unique flexibility. However, the radical polymerization process of hydrogels is usually associated with intensive input of energy. In this study, tannic acid and Fe 3 O 4 nanoparticles were integrated on conductive MXene nanosheets as catalysts to rapidly polymerize to prepare super-stretchable and highly-sensitive Silk Fibroin/Poly-acrylic acid hydrogel sensors. The synergistic effect of TA and Fe 3 O 4 nanoparticles can maintain the dynamic redox cycling between Fe 2+ /Fe 3+ , to enhance the ability of ammonium persulfate to generate free radicals and rapidly forming hydrogel within 5 min. Inspired by the surface morphology of lotus leaves, a biomimetic strategy was employed to construct micro-protrusion structures on the hydrogel surface in order to enhance its sensitivity. The developed sensor showed excellent tensile strain (946 %) and high tensile strength (195 kPa), high sensitivity (GF = 4.05) and stable cycling ability (>100 cycles). The hydrogel sensor demonstrated high linearity (0.99 within the strain range of 150 %–600 %), low detection limit (1 % for strain and 150 Pa for pressure). Moreover, the hydrogel sensor can accurately detect various physiological signals emitted by the human body, making it highly promising for applications as wearable sensors in personalized healthcare.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xin Jing,Yeqing Xu,Jiazhou Zeng,Peiyong Feng,Shitao Li,Hao-Yang Mi
The development of soft robotics that integrates autonomous motion and real-time sensing remains challenging due to the irreconcilability of these functions in homogeneous materials. Inspired by natural symbiotic systems, a conductive nanocomposite hydrogel is developed that achieved a synergistic combination of magnetic actuation and built-in strain-sensing capabilities through a facile magnetic-field-induced assembly strategy that creates a gradient distribution of Fe 3 O 4 @MXene nanohybrids within the hydrogel network. The resulting hydrogel exhibits a comprehensive set of properties underpinning this synergy: good conductivity (2.6 mS cm −1 ), high strain sensitivity (gauge factor of 6), a broad strain response range (0–580%), and excellent fatigue resistance (500 cycles), along with a fast magnetic actuation speed of 30° s −1 . The core advance is that actuation and sensing work in concert within a single material, allowing it to execute programmed deformation while simultaneously monitoring its own motion in real-time, which is vividly showcased through biomimetic applications, such as a gripper that adjusts its grip upon sensing and a crawler that can track its own movement. This work provides a paradigm for creating intelligent soft matter with innate feedback loops, opening transformative avenues in adaptive soft robotics, biomedicine, and human-machine interaction.
研究领域:
软体机器人
·
智能材料
·
纳米复合材料
·
传感器与执行器
·
生物医学工程
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高影响因子
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