CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Lincun Yan,Xian Li,Jie Xu,Longtai Jiang,Qiming Wang,Jinrong Li,Yong Xiang,Xiaoran Hu
Enhanced interfacial coupling boosts flexible magnetoelectric sensors. • Enables bias-free sensing of motor speed, vibration, and transient impact. • High sensitivity, rapid response, and high accuracy in UAV motor speed monitoring. • Provides integrated structural health monitoring for UAV propulsion systems. With the growth of low-altitude economy, the rapid spread of unmanned aerial vehicles (UAVs) accompanied by frequent safety accidents has created demands for real-time and in-situ monitoring of their propulsion systems, which are responsible for most of the UAV accidents. However, the limited space and energy supply in propulsion systems pose significant challenges to develop miniature size, high flexibility, low power dissipation, and multi-modal integration of sensors. In this work, a flexible magnetoelectric composite sensor (MCS) was developed using an intrinsically piezoelectric polyurethane (SS-PU) matrix and titanate-modified MnFe 2 O 4 (MFO) nanoparticles. The piezoelectric polyurethane is synthesized with phase-separated segments, whose polyester-based soft segments provide numerous C O dipoles to achieve high piezoelectricity, and the aromatic and disulfide hard segments provide mechanical strength. Additionally, by using a titanate coupling agent as a “molecular bridge” for interfacial engineering, the compatibility between the filler and matrix is highly improved, leading to high efficiency in strain transfer between them. As a result, the composite achieved a notable magnetoelectric coupling coefficient of 33.11 mV/cm ∙ Oe, which is nearly two times compared with that of unmodified composites. The optimized MCS shows a high sensitivity of 2.365 mV/kPa, an ultra-fast response time of 4.2 ms, and a tensile strength of 10.1 MPa. In brushless motor rotation speed monitoring, it presents a linear correlation coefficient of R 2 = 0.99998 and an error < 1.5%. Additionally, the composite sensor supports multi-modal sensing of complex flight conditions, including rotation speed, mechanical vibration, and transient impact. This research offers a new approach to building integrated structural health monitoring systems for future intelligent propulsion systems.
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DOI
高影响因子
NANO
·
2026
·
IF 1.3
Yiwen Yang,Zhixiang Tan,Gaili Ke,Liuchun Chen,Shan Yang,Qiwen Chen,Guoliang Lv,Kun Liu,Taiping Xie,Huichao He
Bicarbonate/hydrogen peroxide (BHP) activation is expected to treat antibiotic wastewater effectively, but it has been rarely studied at different temperature and raw water conditions. Based on their MnFe bimetallic sites and photothermal property, spinel MnFe 2 O 4 nanoparticles were investigated as catalysts to activate BHP for tetracycline treating in variable temperature and raw water environments. At 2 3 ± 2 ∘ C , impressive activity was observed on MnFe 2 O 4 nanoparticles for BHP activation to achieve the degradation of tetracycline regardless of in distilled, municipal tap and natural lake water. Meanwhile, spinel MnFe 2 O 4 nanoparticles had high durability to activate BHP for tetracycline degradation, no obvious activity attenuation was found in 10 cycles of reuse. The apparent activation energy of tetracycline degradation with MnFe 2 O 4 /BHP was found to be 38.73 kJ mol − 1 , having temperature dependent feature. Accordingly, the activity of MnFe 2 O 4 /BHP for tetracycline degradation was proportional to temperature, and MnFe 2 O 4 /BHP had low activity at 3 ± 2 ∘ C and 1 3 ± 2 ∘ C . Under simulated sunlight irradiation, the activity of MnFe 2 O 4 /BHP for tetracycline degradation at 3 ± 2 ∘ C and 1 3 ± 2 ∘ C can be obviously improved by means of the photothermal property of spinel MnFe 2 O 4 nanoparticles to rise temperature. In a 15 L of continuous reactor with intake solution rate range of 2.4 L h − 1 to 9.6 L h − 1 , MnFe 2 O 4 /BHP showed good operational performance for tetracycline degradation in municipal tap water. Active species detections revealed that tetracycline degradation with MnFe 2 O 4 /BHP was co-initiated by ⋅O 2 − , ⋅ OH and ⋅ CO 3 − which are mainly produced from spinel MnFe 2 O 4 activating BHP reactions.
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产品关联
DOI
高影响因子
ACS Applied Bio Materials
·
2021
·
IF 0
Sheng-Yan Yin,Wei Liu,Ke Zhang,Jishan Li
Current photodynamic therapy (PDT) faces several intrinsic limitations, including insufficient oxygen supply and limited penetration of external light sources. Herein, we report a nanoconjugate, which, in response to the elevated hydrogen peroxide levels associated with tumor tissues, can supplement the oxygen needed for PDT and provide local self-illumination. Consisting of a MnFe2O4 core, a metal–organic framework shell loaded with the chemiluminescence reagent luminol, and a hyaluronic acid surface coating, the nanoconjugate is highly effective for suppressing cancer tissues in vivo via PDT in the absence of externally delivered light.
研究领域:
纳米技术
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癌症治疗
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生物医学工程
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材料科学
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产品关联
DOI
PubMed
JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-13
·
IF 10.6
Yang Peng,Liu Shaojie,Chen Zhuang,Liu Weijing,Duan Deshang,Yang Zuo,Yan Haohao,Rao Zhiping,Zhang Xianghan,Zhang Ruili,Wang Zhongliang
Background Mn 2+ -mediated chemodynamic therapy (CDT) has been emerged as a promising cancer therapeutic modality that relies heavily on HCO 3 − level in the system. Although the physiological buffers (H 2 CO 3 /HCO 3 − ) provide certain amounts of HCO 3 − , the acidity of the tumor microenvironment (TME) would seriously affect the HCO 3 − ionic equilibrium (H 2 CO 3 ⇌ H + + HCO 3 − ). As a result, HCO 3 − level in the tumor region is actually insufficient to support effective Mn 2+ -mediated CDT. Results In this study, a robust nanomodulator MnFe 2 O 4 @ZIF-8 (PrSMZ) with the capability of in situ self-regulation HCO 3 − is presented to enhance therapeutic efficacy of Mn 2+ -mediated CDT. Under an acidic tumor microenvironment, PrSMZ could act as a proton sponge to shift the HCO 3 − ionic equilibrium to the positive direction, significantly boosting the generation of the HCO 3 − . Most importantly, such HCO 3 − supply capacity of PrSMZ could be finely modulated by its ZIF-8 shell thickness, resulting in a 1000-fold increase in reactive oxygen species (ROS) generation. Enhanced ROS-dependent CDT efficacy is further amplified by a glutathione (GSH)-depletion ability and the photothermal effect inherited from the inner core MnFe 2 O 4 of PrSMZ to exert the remarkable antitumor effect on mouse models. Conclusions This work addresses the challenge of insufficient HCO 3 − in the TME for Mn 2+ -mediated Fenton catalysts and could provide a promising strategy for designing high-performance Mn 2+ -mediated CDT agents to treat cancer effectively.
研究领域:
癌症治疗
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纳米技术
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化学生物学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yuxuan He,Jin Qian,Peifang Wang,Jie Wu,Bianhe Lu,Sijing Tang,Pan Gao
The nanocomposite of MoS 2 embedded manganese ferrite doped perovskite (SrCoO 3 /MnFe 2 O 4 /MoS 2 , abbreviated as SMM) was successfully synthesized for peroxymonosulfate (PMS) activation under visible-light. It was optimized that the SMM-3 (mass ratio of MoS 2 modified nanocomposite was 0.3) exhibited excellent catalytic performance to activate PMS for levofloxacin (LVF) degradation, with the degradation efficiency of 95.1% in 20 min. Besides, SMM-3 was able to efficiently degrade LVF under real water matrix. The quenching experiments and electron paramagnetic resonance (EPR) analysis revealed that SO 4 •- and HO • played a dominant role in reaction. Due to the photocatalytic property of nanocomposites, the visible light could excite electrons to react with oxygen and form O 2 •- , which further reacted with HO • to produce 1 O 2 . In the reaction process, the rapid redox cycle of metal ions (including Co, Mn, Fe and Mo) boosted the activation of PMS and promoted the degradation of LVF in a short time. The Density functional theory (DFT) calculation and LC-MS/MS further revealed that oxidation of piperazine ring, decarboxylation and defluorination processes were the main LVF degradation pathways. Finally, the toxicity analysis based on Toxicity Estimation Software Tool (T.E.S.T) verified the ecological risks of transformation residues.
研究领域:
环境科学
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材料科学
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化学工程
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光化学
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催化
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xi Zhou,Shuai Zhang,Yan Liu,Jiashen Meng,Muxue Wang,Yaoji Sun,Linbo Xia,Zhaozhi He,Wenxin Hu,Lei Ren,Zhiwei Chen,Xingcai Zhang
Nanozymes with peroxidase-like activity have great application potential in combating pathogenic bacterial infections and are expected to become an alternative to antibiotics. However, the near-neutral pH and high glutathione (GSH) levels in the bacterial infection microenvironment severely limit their applications in antibacterial therapy. In this work, a metal–organic framework (MOF)-based cascade catalytic glutathione-depleting system named MnFe2O4@MIL/Au&GOx (MMAG) was constructed. The MMAG cascade-catalyzed glucose to provide H+ and produces a large amount of toxic reactive oxygen species. In addition, MMAG consumed GSH, which can result in bacterial death more easily. Systematic antibacterial experiments illustrated that MMAG has superior antibacterial effects on both Gram-positive bacteria and Gram-negative bacteria.
研究领域:
纳米技术
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生物医学工程
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材料科学
·
细菌学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）