MATERIALS & DESIGN
·
2019
·
IF 5.77
Lulu Xu,Ye Xiong,Baokang Dang,Zhangning Ye,Chunde Jin,Qingfeng Sun,Xiaohong Yu
Lightweight aerogels with superior cavities have attracted great interest in the field of electromagnetic wave absorbing materials. In this work, a hierarchical porous wood aerogel modified with Fe 3 O 4 /ZIF-67 (Fe 3 O 4 /ZIF-67@WA) with high compressibility and low-density was fabricated by in-situ anchoring of magnetic Fe 3 O 4 /ZIF-67 rhombohedral dodecahedron in naturally delignified wood aerogel. Combining the advantages of both aerogels and magnetic Fe 3 O 4 /ZIF-67 particles, Fe 3 O 4 /ZIF-67@WA reveals excellent compression-resilience and efficient microwave absorption performance. It possesses a maximum reflection loss (RL) of about −23.4 dB at a low thickness of 1.5 mm and a specific electromagnetic shielding effectiveness of up to ~156.3 dB cm 3 g −1 . Moreover, the composites exhibit a broad absorption bandwidth under an ultrahigh frequency of 13.5–18.0 GHz. In view of those excellent absorbing effects, the prepared green magnetic Fe 3 O 4 /ZIF-67@WA is likely to be used as a lightweight shielding material against electromagnetic radiation, especially for smart building and miniaturized device applications.
研究领域:
材料科学
·
电磁学
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DOI
高影响因子
WATER ENVIRONMENT RESEARCH
·
2019
·Vol. 92
·期 5
·740-748
·
IF 1.24
Mingyan Li,Dasheng Gao,Shuang Cui,Yan Shi,Ningning Liu
Fe 3 O 4 /ZIF-67 composite was successfully fabricated by a facile method and used as adsorbent to remove direct blue 80 (DB80, azo dye) from water. Characterizations of Fe 3 O 4 /ZIF-67 composite were performed by scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), N 2 adsorption/desorption isotherms, Fourier transform infrared spectroscopy (FTIR), and magnetic property analysis. As an adsorbent, the factors (such as adsorbent dose, pH, initial concentration, contact time, and temperature) affecting the adsorption performance of adsorbent were investigated. The optimal adsorption condition is 5 mg of Fe 3 O 4 /ZIF-67 composite in 8 ml of DB80 solution (70 mg/L) for 60 min at 318 K, and the pH value has little effect on the adsorption performance. The adsorption isotherm, kinetics, and thermodynamics of DB80 adsorbed on the Fe 3 O 4 /ZIF-67 composite were also studied. The experimental results revealed that the experimental data followed the Langmuir model and the adsorption behavior could be well explained by pseudo-second-order kinetic model. Thermodynamic analysis indicated that the adsorption was a spontaneous and endothermic process. Furthermore, the mechanism of DB80 adsorbed on the Fe 3 O 4 /ZIF-67 composite was proposed. The occurrence of adsorption might be caused by the π-π stacking interaction between Fe 3 O 4 /ZIF-67 composite and DB80. Practitioner points Fe 3 O 4 /ZIF-67 composite was successfully fabricated via a facile method. Fe 3 O 4 /ZIF-67 composite was used to the adsorptive removal of direct blue 80 (azo dye). The kinetic characteristics and thermodynamic parameters were analyzed. The adsorption behavior might be ascribed to the π-π stacking interaction between Fe 3 O 4 /ZIF-67 composite and DB80.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
Micro & Nano Letters
·
2020
·Vol. 15
·期 7
·425-429
·
IF 0.975
Yuqiong Shi,Beibei Qiu,Xiangrong Wu,Yuxuan Wang,Jinhua Zhu,Xiuhua Liu,Dongbao Zhao
To extend the wide application range of luteolin (LUT), a slow-release drug delivery system is urgently needed. In this work, Fe 3 O 4 @ZIF-67 was reported as the carrier of LUT. A facile synthesis method of Fe 3 O 4 @ZIF-67 was established with simply continuous stirring. The structure and function of the nanocomposites were characterised by SEM, TEM, XRD, FTIR, VEM and TGA. Under the optimal reaction conditions, the maximum drug loading capacity of the carrier was obtained to be 308.07 µg/mg. And LUT was released about 55% from Fe 3 O 4 @ZIF-67 after 72 h. The adsorption kinetics and release kinetics of LUT were also investigated. The results showed that the relationship between time and drug loading fitted well with the quasi-second-order kinetic equation ( R 2 = 0.99) and the release mechanism followed the Sigmoidal model ( R 2 = 0.98). In short, Fe 3 O 4 @ZIF-67 could be developed as a carrier of the LUT delivery system for slow release.
研究领域:
药剂学
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材料科学
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生物医学工程
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2020
·
IF 4.3
Yinghao Xue,Ping Xiang,Yuzhu Jiang,Huilan Lian,Jingyu Mo,Mengying Li
Excessive phosphate in surface water can spur the growth of organism, which put a threat on the bio-safety of drinking water. Different from previous study, sodium acetate (NaAc) was used as modification agent of Fe 3 O 4 , then the magnetic Fe 3 O 4 @ZIF-67 composites with a non-core-shell sturture were synthesized. According to ZIF-67 loading and phosphate adsorption of synthesized Fe 3 O 4 @ZIF-67, the Fe 3 O 4 @ZIF-67 composites with a Co 2+ /Fe 3 O 4 molar ratio of 1:2 was taken into further evaluation. Fe 3 O 4 @ZIF-67 composites exhibited satisfactory adsorption performance and easy magnetic recovery, and the sorption capacity reached 116.59 mg P/g within 180 min (C 0 = 20 mg P/L, 298 K). The maximum adsorption capacity of phosphate was obtained at the neutral pH, and not significantly interfered with ions of K + , Mg 2+ , NO 3 − and SO 4 2- . Remarkably, Fe 3 O 4 @ZIF-67 described enhanced phosphate adsorption ability in the presence of Ca 2+ . To investigate the role of Ca 2+ , two modes (preloading and addition) of Ca 2+ dosing were examined and the improved adsorptive performance could be owing to the synergistic eff ;ect of adsorption and Ca-P micro-precipitation on the surface of Fe 3 O 4 @ZIF-67. During the regeneration process, the performance of desorbent was evaluated by phosphate releasing and secondary adsorption, and the absence or presence of Ca 2+ would have a significant impact on the selection of desorption solution.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
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2020
·
IF 3.004
Xiangrong Wu,Beibei Qiu,Yanan Chen,Yuqiong Shi,Jinhua Zhu,Xiuhua Liu,Dongbao Zhao
In this work, α-glucosidase was immobilized on a type of nanoscaled magnetic materials Fe 3 O 4 @ZIF-67 to construct a biomicroreactor for rapid screening α-glucosidase inhibitors. The parameters that affected the immobilization efficiency were investigated. Under optimal conditions, the amount of α-glucosidase loaded was up to 79.07 μg·mg −1 . Then, the enzyme biomicroreactor was immobilized by an external magnetic field in a tube connecting HPLC and micro-injection pump at both ends to form a magnetic online screening system. The screening flow rate and eluent organic solvent ratio during the screening process were optimized. XinYang MaoJian crude tea extract was tested to verify this online screening method, and three inhibitors (catechin, epigallocatechin gallate and epicatechin gallate) were fished by this magnetic online screening system. Based on the classical p NPG method, the inhibitory activities on α-glucosidase were further verified and studied. Compared with the traditional ligand fishing methods, the screening method established in this work can integrate screening, elution and analysis. It can simply, efficiently and directly screen and identify potential α-glucosidase inhibitors from natural sources. This method was expected to provide an effective basis for accelerating the development of new hypoglycemic drugs.
研究领域:
生物化学
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药物开发
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Yuxia Xie,Xiaofeng Yang,Jin Chen,Yuzhao Ma,Yanjun Li
The inverse spinel-structured Fenton-like catalyst, magnetic Fe 3 O 4 nanoparticles, effectively activates peroxymonosulfate (PMS) to achieve the degradation of tetracycline (TC). However, a significant challenge remains in accelerating the Fe 3 + /Fe 2+ cycling during the activation process. Herein, Fe 3 O 4 /ZIF-67/Ti 3 C 2 T x (FCT) magnetic composite materials were synthesized via a wet chemical method and comprehensively characterized. The degradation of tetracycline hydrochloride (TC-HCl) was investigated by activating PMS with FCT, with a focus on the effects of charge transfer and transition metal ion valence state changes on sulfate radical (•SO 4 - )-based advanced oxidation processes. FCT-1 exhibited high efficiency in activating the PMS system for the removal of TC-HCl, achieving complete degradation of 10 mg/L TC-HCl within 10 minutes. A synergistic catalytic mechanism to activate PMS by FCT was proposed, primarily involving the electron-donating ability of Fe 2+ in Fe 3 O 4 , which enhances the Co 3+ /Co 2+ cycle, and the reduction capability of Ti 3 C 2 T x towards Fe 3+ . Additionally, FCT exhibited excellent recyclability and facilitated magnetic separation. Overall, this work provides new opportunities for developing efficient environmental catalysts with magnetic recoverability.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2026
·Vol. 28
·期 1
·12
·
IF 2.6
Fu Qiuping,Zha Lei,Wang Jialin,Hu Jing,Wu Pan,Xiao Bin
The development of high-capacity and easily separable adsorbents is crucial for efficient dye wastewater treatment. Herein, a magnetic Fe 3 O 4 @ZIF-67 nanocomposite was synthesized via a facile in situ method to enhance its separation and recovery capabilities. The characterization results confirmed the successful synthesis of this nanocomposite. The batch adsorption experiments demonstrated that its adsorption capacity reached as high as 949.5 mg·g −1 . This process can be well described by the Langmuir and pseudo-second-order models, indicating it is a single-layer chemical adsorption. The thermodynamic studies revealed the adsorption to be spontaneous and endothermic. This work not only presents Fe 3 O 4 @ZIF-67 as a highly efficient and recyclable adsorbent for malachite green (MG) but also validates the strategy of constructing magnetic MOF-based composites for practical environmental remediation.
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产品关联
DOI
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 6
·e06885
·
IF 2.3
Jianming Wu,Ziqiang Xiang,Yujie Li,Jiaqi Lv,Xiangfang Peng
Microplastic pollution poses a significant threat to ecosystems and human health, necessitating efficient removal methods. In this study, a magnetic nanocomposite, Fe 3 O 4 /PSS/ZIF-67, was synthesized via a solvothermal method, utilizing poly(sodium p-styrenesulfonate) (PSS) to functionalize Fe 3 O 4 nanoparticles for the in situ growth of ZIF-67. Under ultrasound-assisted conditions, the adsorbent exhibited exceptional performance for polystyrene (PS) microplastics, achieving equilibrium within 15 min with a maximum adsorption capacity of 2816 mg/g. The adsorption process followed pseudo-first-order kinetics and the Langmuir isotherm model. Mechanistic analyses revealed that the removal was driven by synergistic effects of van der Waals forces, electrostatic interactions, hydrogen bonding, and π–π interactions. Furthermore, the Fe 3 O 4 /PSS/ZIF-67 demonstrated broad-spectrum removal capabilities for various microplastics (PP, PE, PET, PMMA, PVC, PA), organic dyes (AB 93, MB, MO, CR, CV, MG, R6G), heavy metal ions (Fe 3+ , Ni 2+ , Cu 2+ , Zn 2+ ), and antibiotics (TC, CIP), demonstrating its potential for wastewater treatment.
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产品关联
DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
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2026
·
IF 13.5
Xiaonan Liu,Zhi Lei,Maoxia Lu,Dongwei Ma,Chuan Wang,Zehong Wu,Daohai Zhang
Traditional electromagnetic shielding materials can no longer meet the rapidly growing demands of modern flexible electronic devices and advanced information technologies. Owing to their excellent flexibility, adhesion, stimuli responsiveness, and ease of processing and functional modification, hydrogels offer promising opportunities for developing flexible wearable electronic devices. In this study, PAM/CMC/Fe 3 O 4 @ZIF-67 multifunctional composite hydrogels were fabricated through a reverse-growth strategy combined with a one-pot polymerization method. First, flower-like Fe 3 O 4 microspheres were prepared via an ethylene glycol-assisted solvothermal method and subsequently coupled with ZIF-67 through a reverse-growth strategy to obtain the Fe 3 O 4 @ZIF-67 composite. Subsequently, the composites were introduced into a PAM/CMC-based three-dimensional network, forming a multifunctional hydrogel that integrates flexibility, high water content, and synergistic conductive–magnetic effects. The experimental results showed that the 3 mm-thick PCZF-2 hydrogels achieved an average EMI SE of 36.08 dB. It also exhibited a conductivity of 0.93 S m −1 , a compressive modulus of 398.0 kPa, a compressive strain of 64.1%, a water content of 625.72%, and a swelling ratio of 240.82%. The hydrogel also exhibited excellent adhesion capability and high sensitivity (GF = 1.40 within the strain range of 0–100%, R 2 = 0.995), enabling human–machine-interaction-friendly strain sensing. This study provides an effective strategy for constructing tough multifunctional materials with integrated electromagnetic interference shielding and strain-sensing functionalities. Functional Fe 3 O 4 @ZIF-67 composite fillers were constructed via a reverse-growth strategy and incorporated into a double-network composite hydrogel through a one-pot method. The synergistic effects of magnetic loss, dielectric loss, and multiple scattering induced by the fillers endow the material with excellent electromagnetic interference shielding performance. Meanwhile, the deformation-responsive conductive network enables highly sensitive human motion sensing, providing an effective pathway for the development of integrated flexible materials for electromagnetic protection and intelligent sensing. Download: Download high-res image (252KB) Download: Download full-size image
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DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 2
·702
·
IF 4.6
Zhiyang Feng,Jiaqing Zhu,Shen Zhuo,Jun Chen,Wenyi Huang,Hao Cheng,Lijun Li,Tai Tang,Jun Feng
A magnetically functionalized Fe3O4@ZIF−67 metal–organic framework (MOF) was prepared by electrostatic self-assembly using magnetic Fe3O4nanoparticles as the core and ZIF−67 as the shell. The composite was characterized by electron microscopy, X-ray diffraction, Fourier- transform infrared spectroscopy, and Brunauer–Emmett–Teller measurements. Magnetic solid-phase extraction (MSPE) was performed on five flavonoids fromDicranopteris pedatausing Fe3O4@ZIF−67 as an adsorbent. The developed MSPE method was combined with high-performance liquid chromatography–ultraviolet detection to preconcentrate and separate five flavonoids (rutin, quercitrin, kaempferol-3-O-α-L-rhamnoside, quercetin, and kaempferol) fromDicranopteris pedata. The factors affecting the extraction, such as the amount of Fe3O4@ZIF−67 adsorbent, salt ion concentration in the sample solution, vortex time, type and amount of desorbing solvent, concentration of formic acid to acidify the desorbing solvent, and acetonitrile ratio, were optimized. The developed method showed good linearity over the concentration range of 1.09–70.0 μg∙mL−1for the five flavonoids, with R2values between 0.9901 and 0.9945. The limits of detection and average recoveries for the five flavonoids were in the ranges of 39.5–56.2 ng∙mL−1and 92.2–100.7%, respectively. The method presented herein is simple, efficient, and sensitive; it can be used for enrichment analysis of the five flavonoids inDicranopteris pedata.Keywords:magnetic solid-phase extraction;Fe3O4@ZIF−67;Dicranopteris pedata;flavonoids;metal–organic framework materials
研究领域:
分析化学
·
药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Mantang Chen,Nan Wang,Xiaobo Wang,Yu Zhou,Lihua Zhu
Magnetic Fe 3 O 4 @ZIF-67 composites were prepared, characterized, and used as heterogeneous catalysts to activate peroxymonosulfate (PMS) for the degradation of tetrabromobisphenol A (TBBPA). It was observed that all the added TBBPA (40 mg L −1 ) was completely degraded in 3 min in the Fe 3 O 4 @ZIF-67 (0.1 g L −1 ) + PMS (0.1 g L −1 ) system with a pseudo second-order degradation rate constant ( k ) of 110.3 L g −1 min −1 , being nearly 10 times that (11.8 L g −1 min −1 ) in the ZIF-67 + PMS system and 2000 times that (0.06 L g −1 min −1 ) in the Fe 3 O 4 + PMS system. The observed synergistic catalysis between Fe 3 O 4 and ZIF-67 in Fe 3 O 4 @ZIF-67 enhanced not only the degradation of TBBPA, but also the TOC removal and the release of Br − during the degradation of TBBPA. Multiple reactive species including OH, SO 4 − and 1 O 2 were responsible for the degradation of TBBPA, but 1 O 2 was the dominant one. The synergistic catalytic mechanism of PMS activation by Fe 3 O 4 @ZIF-67 was proposed, which mainly involved the electron donating ability of Fe 2+ in Fe 3 O 4 for enhancing the Co 3+ /Co 2+ cycle. Moreover, Fe 3 O 4 @ZIF-67 showed good recyclability and could be easily recycled by magnetic separation. This work provides an opportunity to construct highly efficient catalysts with magnetic recycling capability.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhao-Xing Yan,Ling-Xi Zhao,Ning Liu,Na Li,Ru-Song Zhao
Non-steroidal anti-inflammatory drugs (NSAIDs) have gained significant attention as emerging pollutants and are increasingly detected in aquatic environments. Therefore, it is imperative to investigate the efficient removal of NSAIDs from water systems. In this study, a magnetic LDH with three-dimensional hollow structure (Fe 3 O 4 @ZIF-67@Co-Ni LDH) was synthesized using ZIF-67 as a template for the removal of carprofen (CPF) and flurbiprofen (FLU) from water environments. The adsorption process of CPF and FLU on Fe 3 O 4 @ZIF-67@Co-Ni LDH and the competitive adsorption between these two NSAIDs were investigated. The adsorption mechanism was explored by experimental analysis and theoretical calculation. Results demonstrated that the pseudo-second-order kinetic model and Liu isotherm model can better fit the kinetic and isotherm data, and according to the thermodynamic data analysis, the adsorption process was exothermic, spontaneous and stable. The adsorption capacity of CPF and FLU on Fe 3 O 4 @ZIF-67@Co-Ni LDH can reach 856.2 mg/g and 797.5 mg/g. Fe 3 O 4 @ZIF-67@Co-Ni LDH exhibited high adsorption capacity for CPF and FLU in actual environment water, with stronger affinity towards CPF when both NSAIDs coexisted simultaneously. The three-dimensional hollow structure enhanced the adsorption capacity of Fe 3 O 4 @ZIF-67@Co-Ni LDH, making it a promising adsorbent for NSAIDs.
研究领域:
环境科学
·
水处理
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）