Journal of Nanomaterials
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2016
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IF 1.758
Lina Song,Changzhi Yan,Wei Zhang,Haoan Wu,Zhengyang Jia,Ming Ma,Jun Xie,Ning Gu,Yu Zhang
This study reports the synthesis of three kinds of manganese-doped magnetic ferrite nanoparticles (MnFe2O4) in benzyl ether, octyl ether, and 1-octadecene by a simple and low cost thermal decomposition method. It was found that benzyl ether results in a dramatic improvement in nanoparticle crystallinity owing to its stronger reducibility compared to octyl ether and 1-octadecene, as demonstrated by X-ray diffraction and TEM measurements. Raman spectroscopy detection also indicated that the reducing solvent of benzyl ether was in favor of forming magnetite-like structure ferrite, while maghemite-like structured ferrite was obtained in octyl ether and 1-octadecene. The saturation magnetization () of MnFe2O4 synthesized in benzyl ether was 85 emu/g [Fe], which was 3 and 5 times larger than MnFe2O4 synthesized in octyl ether and 1-octadecene, respectively. The specific absorption rate (SAR) of MnFe2O4 nanoparticles synthesized in benzyl ether was 574 W/g, while MnFe2O4 nanoparticles synthesized in octyl ether and 1-octadecene have had much smaller SAR of 76 and 33 W/g, respectively. MnFe2O4 nanoparticles synthesized in benzyl ether also exhibit higher relaxivity ( mM−1 s−1) than those synthesized in octyl ether and 1-octadecene ( and 22 mM−1 s−1). It was obvious that MnFe2O4 nanoparticles synthesized in reducing benzyl ether have higher crystallinity and thus higher , SAR, and values, which can serve as a better candidate for hyperthermia and magnetic resonance imaging.
研究领域:
材料科学
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纳米医学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Hao Jiang,Yurou Zhang,Shiqi Guo,Pengcheng Zhao,Xinyi Li,Junjie Fei,Yixi Xie
MnFe₂O₄ was anchored on PPY-derived graphitized carbon nanotubes. • Graphitized carbon and MnFe₂O₄ exhibited synergistic electrocatalysis. • The sensor detected Myr over 0.005–5.0 μmol L −1 with 2.30 nmol L −1 LOD. • Excellent selectivity, reproducibility, and stability were achieved. • Successful determination of Myr in real samples was demonstrated. Accurate determination of myricetin (Myr) is essential due to its significant bioactivity and potential adverse effects at excessive intake. Herein, a MnFe 2 O 4 composite based electrochemical sensing platform was constructed to achieve highly sensitive Myr detection through synergistic electrocatalysis and enhanced interfacial electron transfer. The composite was synthesized via an in-situ growth followed by high-temperature pyrolysis, in which MnFe 2 O 4 nanoparticles were uniformly anchored onto polypyrrole nanotubes and subsequently converted into a conductive carbon framework. This transformation effectively improves electrical conductivity, suppresses aggregation, and enhances structural stability. The resulting hierarchical structure provides abundant active sites and facilitates rapid charge transport, leading to significantly enhanced electrochemical response toward Myr oxidation. Under optimized conditions, the sensor exhibited a wide linear range of 0.005–5 μmol L −1 and a low limit of detection (LOD) of 2.30 nmol L −1 . Additionally, the sensor demonstrated excellent reproducibility, stability, and anti-interference capability. Its practical applicability was confirmed by successful determination of Myr in real samples, with results consistent with those obtained by ultraviolet-visible (UV–Vis) spectroscopy. These findings provide an effective strategy for developing high-performance spinel ferrite‑carbon-based electrochemical sensors for bioactive compound analysis. Download: Download high-res image (130KB) Download: Download full-size image
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高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Chun Zhang,Xiaodong Jin,Liping Wang,Chengzhao Jin,Xiaoqian Han,Weigang Ma,Xingang Li,Guixiang Teng
Enrichment and detection of glycopeptides are an important clinical measure for the diagnosis of complex diseases. Enrichment materials play a key role in this process; they must have an effective sample-screening ability to eliminate the interference of nonglycopeptides. In this work, novel hollow MnFe2O4@C@APBA nanospheres (HMCAs) with magnetic and pH responsiveness were prepared for glycopeptide enrichment. The as-prepared composites have a suitable hollow structure and large specific surface area, and the boron hydroxyl group in their cavities can fix or disconnect the hydrophilic groups of the glycopeptides at different pH, so the glycopeptides can be adsorbed or desorbed in a controllable way. Enrichment results showed that the HMCAs exhibited an excellent enrichment performance: ultralow limit of detection (approximately 0.5 fmol μL–1), perfect size-exclusion effect (HRP/BSA, 1:800, w/w), favorable universality (HRP, IgG, and RNase B), and high binding capacity (150 mg/g). In order to verify the application of materials in practice, the HMCAs were used for the analysis of complex samples and it was found that 474 glycopeptides were identified from 210 glycoproteins in three replicate analyses of 2 μL of human serum. The results showed that the HMCAs could be used as a promising enrichment material for glycopeptide characterization in MS-based glycoproteomics and related fields.
研究领域:
生物化学
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分析化学
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医学诊断
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DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Shunlong Pan,Xinrui Guo,Xing Lu,Rong Li,Hao Hu,Xi Nie,Biming Liu,Rong Chen,Mingxin Zhu,Shengqiang Hei,Xianzheng Zhu,Shuo Zhang,Hua Zhou
Advanced oxidation processes (AOPs) struggle to entirely remove phosphonates from wastewater, and the remaining phosphates easily cause secondary pollution. With MnFe 2 O 4 as the core and hydrated zirconium oxide (HZO) as the shell, the magnetic core-shell nanoreactor MnFe 2 O 4 @HZO with dual functions of "catalysis and adsorption" was designed to activate peroxymonosulfate (PMS) for nitrilotris-methylenephosphonic acid (NTMP) removal. Total phosphorus removal reached 96.5% within 180 min, with only 0.18 mg/L of phosphates left because of the full exploitation of active sites and adsorption sites. This is because of the strong inner-sphere complexation of shell for phosphates adsorption and the excellent electron transfer performance of the core for PMS activation. High NTMP removal under the protection of HZO shell could be obtained over wide pH (3−8) or complex water matrices. After five cycles, Mn leaching amount was only 0.4 mg/L. The study provides information on the design of core-shell catalysts in the PMS-AOP field for the comprehensive removal of contaminants.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Juntong Liu,Ruoyu Sun,Yinsu Wu,Shengtao Xing
Adsorption is a cost-effective technology for the removal of refractory organic pollutants , and the regeneration of the spent adsorbent is crucial in terms of environmental and economic aspects. Herein, CuO X /MnFe 2 O 4 was synthesized by a two-step precipitation method and investigated as a peroxymonosulfate (PMS) catalyst for the regeneration of granular activated carbon (GAC) saturated with ofloxacin. The influences of reaction conditions on the regeneration of GAC with CuO X /MnFe 2 O 4 -PMS and the possible mechanism were explored. The results showed that CuO X /MnFe 2 O 4 exhibited high catalytic activity for the regeneration of GAC via the high mineralization of the adsorbed ofloxacin. Singlet oxygen was the dominant reactive species for organics removal, while O 2 •− and SO 4 •− also made a contribution to the degradation of organic intermediates. Under the optimized conditions, the regeneration efficiency of the spent GAC reached 98%, 89%, 87% and 85% for ofloxacin, ciprofloxacin, Orange II and methylene blue , respectively. Moreover, CuO X /MnFe 2 O 4 and GAC exhibited high stability and good reusability in this process, suggesting the potential application of this regeneration technology for removing refractory organic pollutants.
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DOI
高影响因子
LANGMUIR
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2025
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IF 3.9
Tanxia Xiang,Yunlan Xu,Dengjie Zhong,Danli Tang
Organic pollutants present in wastewater pose severe threats to aquatic organisms and human health. In this study, a magnetic MFO/NCS@MoS2 composite catalyst was successfully synthesized via a hydrothermal method and applied for catalytic ozonation of methylene blue (MB). The catalyst was systematically characterized using multiple techniques including XRD, FT-IR, SEM, TEM, and XPS. Results revealed that the incorporation of chitosan (CS) effectively expanded the interlayer spacing of MoS2, which not only enhanced the structural stability but also promoted mass transfer and full exposure of active sites, thus promoting the generation of free radicals and nonfree radicals. As an electron donor, Mo4+ and unsaturated sulfur atoms on the surface of MoS2 not only provided active centers for catalytic ozonation, but also promoted the valence cycling between Mn2+/Mn3+ and Fe2+/Fe3+. In this way, the active centers of Mo4+ and unsaturated sulfur from MoS2 cooperated with the Mn/Fe bimetallic centers from MnFe2O4 to make the catalytic reaction continue. The 1.0MFO/NCS@MoS2/O3 system exhibited excellent catalytic activity and removed 99.13% of MB within 6 min. In addition, it possessed remarkable structural stability, strong anti-interference capability, and environmental compatibility. Radical trapping experiments verified that 1O2, O2•–, and •OH were involved in the degradation process. This study provides a new design strategy for developing efficient and recyclable ozonation catalysts.
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PubMed
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
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2019
·Vol. 95
·期 4
·1135-1145
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IF 2.659
Jinying Du,Wensi Xu,Jie Liu,Zhiwei Zhao
BACKGROUND A novel carbon-based modified MnFe 2 O 4 catalyst was first developed to produce sulfate radicals (SO 4 −• ) by activation of persulfate (PS). The catalyst was fabricated with a mixture of MnFe 2 O 4 nanoparticles and chitosan (which could form a large amount of carbon-based biomass after pyrolysis) annealed at 600 °C and was referred to as CM-600. RESULTS The microstructure of the composite catalyst CM-600 showed that MnFe 2 O 4 was supported on the surface of carbon-based sheets. After modification by pyrolysis, the specific surface area of MnFe 2 O 4 enlarged significantly and thus the contact area between catalyst and PS increased. X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy were used to characterize the components of CM-600. In comparison with the MnFe 2 O 4 /PS system, the activation of PS by CM-600 was enhanced prominently, while 99.0% Acid Orange 7 (AO7) removal was achieved after reacting for 30 min. Investigations of influencing factors indicated the optimal treatment parameters. The two reactive species in the degradation process, namely free radicals (SO 4 −• and hydroxyl radicals ( • OH)) and non-radicals (singlet oxygen, 1 O 2 ), were confirmed by quenching tests and electron spin resonance spectroscopy. The corresponding degradation mechanism was proposed and SO 4 −• was generated primarily via the activation of PS by Mn II and Fe II . CONCLUSION The research demonstrated that the composite catalyst CM-600 improved the property of MnFe 2 O 4 for catalyzing PS and thus enlarged the practical application of SO 4 −• oxidation technology in pollutant degradation in aqueous environments. © 2019 Society of Chemical Industry
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Materials Today Communications
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2023
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IF 3.8
Yiwang Dong,Asma Noor,Muneerah Alomar,Qaisar Hayat,Jahangeer Ahmed,M.A.K. Yousaf Shah,Yuzheng Lu,Muhammad Yousaf,Changhong deng
： Achieving high ionic conductivity at reduced temperatures presents a critical challenge in solid oxide fuel cell (SOFC) research. The primary objective is the development of innovative electrolytes characterized by higher ion transport, thereby leading to enhanced ionic conductivity . In this context, we have fabricated a nanocomposite electrolyte featuring a heterostructure composed of the spinel MnFe 2 O 4 (MFO) and hexagonal ZnO (MFO-ZnO) to facilitate rapid ion transport at lower operating temperatures. This study initially delves into the structural, morphological, optical, and interfacial properties of prepared MFO-ZnO fuel cell devices. Subsequently, our fabricated device exhibits remarkable performance, with a peak power density of 750 mW·cm² and a notably high ionic conductivity of 0.12 S/cm at 550 °C. This achievement can be attributed to favorable interfacial contacts between MFO and ZnO, along with an elevated concentration of oxygen vacancies resulting in enhanced efficiency of ionic transport. These results strongly indicate that the MFO-ZnO heterostructure holds significant promise as an electrolyte for developing fuel cells that operate at lower temperatures.
研究领域:
材料科学
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电化学
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能源工程
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纳米科技
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固态离子学
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DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
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2022
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IF 9.879
Zhongming Li,Dong Feng,Bin Li,Delong Xie,Yi Mei
Wearable sensors with a three-dimensional (3D) structural design and electromagnetic shielding performance are significant for the future development of wearable electronic devices. However, it remains a challenge to achieve the target goals. Herein, the thermoplastic polyurethane (TPU)/Ti 3 C 2 T x (MXene)/MnFe 2 O 4 /Multi-walled carbon nanotubes (MWCNTs) ( i.e ., TMMM) composites were innovatively designed using parametric Voronoi structure with different pore sizes and porosity upon fused deposition molding (FDM) printing. The two-dimensional (2D) MXene/zero-dimensional (0D) MnFe 2 O 4 hybrid fillers were built initially by electrostatic bonding strategy, followed by adding the one-dimensional (1D) MWCNTs as a conductive bridging agent, this way endowed the nanofillers with different dimensions uniformly dispersed to form a superb conductive network structure in the TPU matrix. When applied as pressure sensors , the TMMM composites exhibited adjustable gauge factor (GF = 1.33–3.73), extensive sensing compression range (∼89% strain with 12.03 MPa stress), good durability (6000s cyclic compression), which was very conducive to monitoring human motion, such as finger bending, wrist bending, speech recognition, etc . The sensing mechanisms were also studied using the Finite element simulations , and the variation trend of resistance change was in good agreement with the simulation results. The average electromagnetic interference shielding efficiency (EMI SE) value of the 2.1 mm-thick printed composite reached 31.2 dB , suggesting that 99.9242% of electromagnetic waves can be shielded. The proposed strategy not only provided a solution to reduce the weight of electromagnetic shielding materials , but also provided an efficient method for developing porous 3D printed parts with adjustable sensing properties at the macroscopic scale towards wearable electronic devices.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
Journal of Cleaner Production
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2022
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IF 11.072
Bin Zhang,Meng Mei,Kaiwei Li,Jingxin Liu,Teng Wang,Si Chen,Jinping Li
Magnetic biochar adsorbents often suffer from the uneven distribution and shedding problems of nanoparticles . In this study, a one-pot sol-gel pyrolysis method was proposed to synthesize a MnFe 2 O 4 functionalized magnetic sawdust-based biochar (MnFe 2 O 4 @SBC) for efficient removal of diclofenac sodium (DCF). The MnFe 2 O 4 @SBC was characterized by XRD , Raman, VSM, TG-DSC, SEM, TEM, BET, FTIR and XPS . The results demonstrated that the combination of sol-gel and sawdust effectively led to a homogeneous distribution of MnFe 2 O 4 on biochar and the MnFe 2 O 4 @SBC possessed a much richer pore structure and functional groups than the original biochar. A systematic comparison of MnFe 2 O 4 @SBC with commercial activated carbon (CAC) was conducted by analyzing the effects of initial pH, adsorbent dosage, coexisting ions, contact time and temperature on their adsorption performance. Based on the adsorption isotherm study, the maximum adsorption capacity of MnFe 2 O 4 @SBC was predicted to be 352.17 mg/g, which was almost 3.5 times that of CAC. Selectivity adsorption study and real water-based removal experiment further demonstrated the satisfactory adsorption selectivity and applicability of MnFe 2 O 4 @SBC for DCF. This study reveals that the one-pot sol-gel pyrolysis is a promising method for synthesizing excellent magnetic biochar adsorbents.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Zhuo Liu,Chao Xiong,Lin Gan,Junhui Yin,Xueying Wang,Jintao Li,Jiayi Wang,Jintong Li,Changyu Lu
In this work, the S-scheme MnFe 2 O 4 /ZnIn 2 S 4 (MFO/ZIS) heterostructure was prepared by hydrothermal method, which can degrade tetracycline (TC) and 2,4,6-trinitrotoluene (TNT) efficiently. Under simulated sunlight irradiation, 88.9 % of TC can be degraded within 75 minutes, and 82.7 % of TNT can be degraded within 120 minutes. The photocurrent response of 3 %MFO/ZIS (0.45 µA cm- 2 ) surpassed that of ZIS (0.15 µA cm −2 ) and MFO (0.08 µA cm −2 ). This is mainly due to the synergistic effect of the S-scheme electron transport pathway and the photothermal effect in MFO/ZIS, which improves its utilization rate of photogenerated electrons. After being used four times, 3 %MFO/ZIS can still degrade 80.2 % of TC, showing excellent stability. In addition, the TC degradation process was analyzed and the low toxicity of TC after degradation was confirmed by LC-MS, ECOSAR and experiments of cultivating mung bean sprouts, demonstrating the potential application value of MFO/ZIS heterojunction in the wastewater treatment field.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2018
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IF 6.434
Wenbin Xu,Yuan Song,Kang Dai,Shuai Sun,Guyue Liu,Junrui Yao
Novel ternary nanohybrids, consisting of tetraethylenepentamine (TEPA), graphene oxide (GO) and manganese ferrite magnetic nanoparticles (TEPA-GO/MnFe 2 O 4 ), were prepared by a facile hydrothermal method and utilized to remove Pb(II) from aqueous solution effectively. The adsorbents were characterized by SEM, TEM, XRD, FTIR, zeta potential analysis, magnetization hysteresis loop, BET and XPS. These nanoparticles exhibited superparamagnetic behavior as well as high removal efficiency for Pb(II). Moreover, numerous amino groups of the functionalized pendant TEPA on GO coupled with the porous structure of TEPA-GO/MnFe 2 O 4 contribute to high Pb(II) adsorption capacity. The maximum Pb(II) adsorption capacity of TEPA-GO/MnFe 2 O 4 was determined to be 263.2 mg/g at the optimized solution pH of 5.5, much higher than that of GO/MnFe 2 O 4 (133.3 mg/g) and GO (196.1 mg/g). The kinetics and isotherm data fitted well with the pseudo-second-order kinetics and the Langmuir isotherm model, respectively. Thermodynamic studies revealed that the Pb(II) adsorption of TEPA-GO/MnFe 2 O 4 was a endothermic and spontaneous process. The experimental results corroborated that TEPA-GO/MnFe 2 O 4 can be efficaciously reused after washed with HCl, indicative of its potential applications in environmental cleanup.
研究领域:
环境科学
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材料科学
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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）