PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Jianfu Man,Xinran Wang,Wenpeng Jia,Yongzheng Tang,Yongrui Pi
A novel magnetic biobased material, synthesized from nano Fe 3 O 4 and degrading-bacteria, was developed for the effective removal of gatifloxacin (GAT). Investigations into various parameters influencing the adsorption process revealed that the optimal adsorption capacity of 56.63 mg/g for GAT was achieved under mildly acidic conditions. Furthermore, the adsorption capacity of GAT increased with temperature, specifically within the range of 20 °C to 30 °C, while a decrease was noted at lower concentrations of NaCl. The adsorption kinetics of GAT onto Fe 3 O 4 @bacteria were best described by the pseudo-second-order (PSO) kinetic model and the Langmuir isotherm model. Thermodynamic evaluations confirmed that the adsorption process was both endothermic and spontaneous. The primary mechanisms driving the adsorption of GAT included pore filling, π-π conjugation, hydrogen bonding, and electrostatic interactions. Therefore, Fe 3 O 4 @bacteria was established as an effective and environmentally sustainable adsorbent for the removal of GAT.
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DOI
高影响因子
Nanoscale
·
2018
·Vol. 10
·期 24
·11384-11391
·
IF 7.233
Linlin Wang,Hongli Zhu,Ying Shi,You Ge,Xiaomiao Feng,Ruiqing Liu,Yi Li,Yanwen Ma,Lianhui Wang
Micromotors hold promise as drug carriers for targeted drug delivery owing to the characteristics of self-propulsion and directional navigation. However, several defects still exist, including high cost, short movement life, low drug loading and slow release rate. Herein, a novel catalytic micromotor based on porous zeolitic imidazolate framework-67 (ZIF-67) synthesized by a greatly simplified wet chemical method assisted with ultrasonication is described as an efficient anticancer drug carrier. These porous micromotors display effective autonomous motion in hydrogen peroxide and long durable movement life of up to 90 min. Moreover, the multifunctional micromotor ZIF-67/Fe3O4/DOX exhibits excellent performance in precise drug delivery under external magnetic field with high drug loading capacity of fluorescent anticancer drug DOX up to 682 μg mg−1 owing to its porous nature, high surface area and rapid drug release based on dual stimulus of catalytic reaction and solvent effects. Therefore, these porous ZIF-67-based catalytic micromotors combine the domains of metal–organic frameworks (MOFs) and micomotors, thus developing potential resources for micromotors and holding great potential as label-free and precisely controlled high-quality candidates of drug delivery systems for biomedical applications.
研究领域:
生物医学工程
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纳米医学
·
材料科学
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高影响因子
DESIGNED MONOMERS AND POLYMERS
·
2020
·
IF 1.75
Yazhen Wang,Zhen Shi,Yu Sun,Xueying Wu,Shuang Li,Shaobo Dong,Tianyu Lan
Currently, magnetic applications have great potential for development in the field of drug carriers. In this paper, Fe3O4-PVA@SH, an amphiphilic magnetically targeting drug carrier, was prepared by using Fe3O4 and PVA with thiohydrazide-iminopropyltriethoxysilane(TIPTS). The loading capacity of Fe3O4-PVA@SH on Aspirin and the drug release kinetics of loaded drugs were studied. The obtained Fe3O4-PVA@SH exhibits excellent drug release properties in simulating the human body fluid environment (pH 7.2). Since magnetically targeting drug carriers are readily available and have excellent biocompatibility and the characteristics of drug release. This work’s development, preparing amphiphilic magnetically targeting drug carriers in drug delivery and other fields, has great significance.
研究领域:
药剂学
·
生物医学工程
·
材料科学
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 134
·期 7
·
IF 1.866
Jie-Ping Fan,Dan-Dan Liao,Yan-Long Xie,Bing Zheng,Jia-Xin Yu,Ya-Hui Cao,Xue-Hong Zhang,Hai-Long Peng
A composite material (MIP@Fe 3 O 4 @GO) based on molecular imprinted polymer (MIP), superparamagnetic Fe 3 O 4 particles and graphene oxide (GO) was prepared by the chemical coprecipitation method, and used to simultaneously separate and enrich two alkaloids (evodiamine and rutaecarpine) in the extract of Evodiae fructus . The as-prepared MIP@Fe 3 O 4 @GO was characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and vibrating sample magnetometer (VSM). The adsorption kinetics, isotherms, competitive adsorption, and reusability of MIP@Fe 3 O 4 @GO were also investigated. The results revealed that MIP@Fe 3 O 4 @GO was sensitive to the magnetic field and could be easily separated using an external magnet; MIP@Fe 3 O 4 @GO showed good recognition selectivity, as well as simultaneous enrichment and separation abilities for evodiamine and rutaecarpine in the extract of E. fructus with satisfactory recoveries. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44465.
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2012
·
IF 2.236
Xiuying Qiao,Jun Zhou,Bernard P. Binks,Xinglong Gong,Kang Sun
Silane-modified Fe 3 O 4 nanoparticles can stabilize emulsions of both polar and non-polar oils, and the rheological behavior of these emulsions has been investigated as a function of oil volume fraction ( ϕ o ), oil polarity and magnetic field intensity ( ψ ). All the emulsions show a similar elastic response with a modulus plateau at low frequency and a small phase angle (<15°) in dynamic oscillatory shear, and shear-thinning behavior in steady shear measurements. This is independent of ϕ o , oil polarity and ψ . The dynamic modulus ( G ′) and complex viscosity ( η *) increase with an increase in ϕ o and oil polarity, due to enhanced droplet packing and flocculation and particle aggregation on droplet surfaces. The presence of a magnetic field promotes particle attractions and associations and enhances the strength of the three-dimensional particle and droplet networks, thus remarkably increasing G ′ and η * and raising the yield stress. The increase in modulus, viscosity and yield stress are beneficial for the elevation of the stability of these functional emulsions.
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高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2021
·Vol. 36
·期 14
·2926-2935
·
IF 3.089
Xia Tingting,Wu Heyan,Yin Liangliang,Ji Yanqin
A new Cs + adsorbent, Fe 3 O 4 -chitosan particles combined with ammonium molybdophosphate (Fe 3 O 4 –CTS–AMP composite) were synthesized using a facile method through coordination between CTS and AMP. The surface morphology and chemical composition characterization indicated that Fe 3 O 4 –CTS particles and AMP particles were bonded tightly and the composite behaved superparamagnetically. Cs + adsorption properties of Fe 3 O 4 –CTS–AMP composites were studied. The adsorption data fitted well with pseudo-second-order kinetic model and Langmuir–Freundlich adsorption isotherms model. The adsorption equilibrium can be reached fast at 5 min. The maximum adsorption capacity was calculated as 177.8 mg g −1 . The composite also showed high selectivity for Cs + in coexistence with high concentration of competing cations. The adsorption mechanism of Cs + for the composite may mainly be the exchange of Cs + with NH 4 + . Therefore, the newly developed adsorbent is a kind of potential efficient composite for Cs + removal from wastewater. Graphic abstract
研究领域:
环境科学
·
材料科学
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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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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2012
·Vol. 27
·期 7
·1006-1013
·
IF 1.434
Guoxin Zhang,Fengxiang Qie,Jianxuan Hou,Shizhong Luo,Liang Luo,Xiaoming Sun,Tianwei Tan
Surface-functionalized magnetic nanoparticles were prepared by a facile one-pot solvothermal method in ethylene glycol solution. Zeta value, size, and magnetic properties could be well tuned by introducing different functional group molecules. Characterizations, including transmission electronic microscopy, scanning electronic microscopy, thermogravimetric analysis, x-ray powder diffraction and vibrating sample magnetometer, and Fourier transform infrared spectrophotometer demonstrated the efficiency of this simple and general synthesis strategy. The hydrophilic magnetic nanoparticles with various surface functional groups and zeta values were evidenced as excellent candidates for bioseparation by extracting DNA molecules from a model mixture of cell fractures.
研究领域:
纳米医学
·
生物材料
·
分子生物学
·
生物分离技术
·
纳米生物技术
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2014
·
IF 3.84
Zhengpeng Yang,Xianguang Shang,Chunjing Zhang,Jianping Zhu
Magnetic Fe 3 O 4 /hydroxyapatite/molecularly imprinted polypyrrole (Fe 3 O 4 /HAP/MIPPy) nanoparticles with molecularly recognitive photoactivity were successfully prepared via the surface modification and molecular imprinting technique. A novel photoelectrochemical bilirubin biosensor was fabricated by conveniently attaching the proposed Fe 3 O 4 /HAP/MIPPy nanoparticles to the surface of the magnetic glassy carbon electrode (MGCE). The developed biosensor was highly sensitive to bilirubin in solutions, with a linear range from 0.1 to 17 μM and a limit of detection of 0.007 μM. Moreover, the biosensor exhibited outstanding selectivity while used in coexisting systems containing various interferents with high concentration. The favorable performance of the obtained bilirubin biosensor can be mainly attributed to high photoelectric activity, large surface-to-volume ratio, fast electron transfer and selective recognition of Fe 3 O 4 /HAP/MIPPy nanoparticles . The analytical application of the photoelectrochemical bilirubin biosensor confirms the feasibility of bilirubin detection in serum sample.
研究领域:
分析化学
·
生物医学工程
·
纳米医学
·
临床检验学
·
生物传感技术
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DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2019
·
IF 6.864
Yang Zhang,Jingyu Li,Na Ma,Zhichao Meng,Guoxin Sui
Despite of the remarkable progress in effort to fabricate information storage materials in this digital age, it remains a huge challenge to develop the integrated renewable material combining high density magnetic medium, excellent mechanical and biodegradable properties via green and facile method. Synapses on the neurons are a perfect model for efficient mass transport and information transmission by reaction network. Inspired by the morphology of the network structure, we design the synapse-like cellulose@Fe 3 O 4 composites (CFCs). The reactive cores (Fe 3 O 4 ) are anchored onto the cellulose chains acting as magnetic synapses that impart compact structure for bulk cellulose@Fe 3 O 4 composites (BCFCs) at the interface mediated by hydrogen bonds . Due to the additivity and cooperativity of hydrogen bonds, the BCFCs are prepared via in-situ formation of Fe 3 O 4 NPs on the cellulose chains followed by hot-pressing, leading to high density (~1.7 g/cm 3 ) magnetic medium, high compressive strength (CS) (~213.6 ± 3.5 MPa), and excellent biodegradable property. Our work offers a promising strategy to fabricate BCFCs for bio-compatible and military applications, capable to physically vanish at prescribed times once they are no longer needed.
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高影响因子
NANO
·
2023
·
IF 1.2
Yamei Lin,Shengkai Liu,JiXiang Sun,Han Li,Jin Huang,Jiaxiao Bai,Yaqin Guo,Yujie Fu,Zhiguo Liu
In this study, proanthocyanidins-functionalized Fe 3 O 4 magnetic nanocomposites were synthesized by the hydrothermal method. The prepared Fe 3 O 4 nanocomposites were characterized by Fourier transform infrared spectrometer (FTIR), X-ray powder diffractometer (XRD), physical property measurement system (PPMS), particle size analyzer, scanning electron microscope (SEM), and transmission electron microscope (TEM). FTIR results indicated that the obtained products were coated with proanthocyanidins. The SEM and TEM results, as well as particle size distribution analysis, revealed that the obtained products were spherical particles with average diameter of 3 2 8 . 6 2 ± 2 6 . 7 5 nm. XRD and PPMS characterization confirmed that the Fe 3 O 4 nanoparticles have a cubic spinel structure with magnetic properties. The performance of the Fe 3 O 4 nanocomposites for removing organic dyes in an aqueous solution was investigated. The synthesized products were found to be effective on removing various organic dyes, such as Methylene blue (MB), neutral red (NR) and Rhodamine B (RhB), indicating their considerable potential as efficient dyes adsorbents for wastewater treatment.
研究领域:
纳米材料
·
环境科学
·
化学工程
·
绿色化学
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DOI
高影响因子
BIOTECHNOLOGY AND APPLIED BIOCHEMISTRY
·
2014
·Vol. 61
·期 5
·603-610
·
IF 1.322
Rongrong Li,Ling Jiang,Lidan Ye,Jie Lu,Hongwei Yu
The esterase BioH from Escherichia coli was covalently immobilized onto the surface of the functional magnetic nanosupport in an oriented manner. The surface of the Fe 3 O 4 nanosupport was modified with acyl azide groups or both acyl azide groups and hydroxyl groups. The protein loading of the support was increased from 55 to 99 mg/g by an improvement in hydrophilicity, and the activity retention of the immobilized esterase on the nanosupport was improved by 40% after hydrophilic modification (30% and 70% of the free BioH, respectively). For the BioH immobilized on the hydrophilic-modified nanosupport, the recovery activity remained 80% of the original activity after 10 times of recycling. The catalytic kinetics and thermo-/pH-stability of the immobilized esterase BioH were also determined and compared with those of the free enzyme. The comparatively high activity retention, improved thermo-/pH-stability, and good reusability of the immobilized enzyme indicate that oriented covalent immobilization is an efficient method for immobilizing esterase BioH.
研究领域:
纳米生物技术
·
酶工程
·
生物催化
·
应用微生物学
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DOI
高影响因子
危险品化学品经营许可证（带存储）