Fe3O4@MOF core–shell magnetic microspheres with a designable metal–organic framework shell

Ke, Fei; Qiu, Ling-Guang; Yuan, Yupeng; Xia, Junqiang; Zhu, Junfa

doi:10.1039/c2jm31167d

Cited by 295 publications

(193 citation statements)

References 35 publications

Supporting

Mentioning

179

Contrasting

Unclassified

Order By: Relevance

“…However, there are only several strategies to modulate the physicochemical properties of MOFs with magnetic materials. For example, Qiu and co-workers have reported the formation of core-shell structure by a step-by-step assembly strategy on the surface of Fe 3 O 4 [24]; an assembly method of physically mixing MIL-101 and silicacoated Fe 3 O 4 microparticles under sonication has been reported by Yan and co-workers [25]; another reported route is chemical bonding MOF-5 with amino-functionalized Fe 3 O 4 nanoparticles [26]. In general, all of above strategies need to synthesize and decorate magnetic nanaoparticles firstly.…”

Section: Introductionmentioning

confidence: 98%

Facile synthesis of magnetic hybrid Fe3O4/MIL-101 via heterogeneous coprecipitation assembly for efficient adsorption of anionic dyes

Jiang

2016

Journal of the Taiwan Institute of Chemical Engineers

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 98%

Facile synthesis of magnetic hybrid Fe3O4/MIL-101 via heterogeneous coprecipitation assembly for efficient adsorption of anionic dyes

Jiang

2016

Journal of the Taiwan Institute of Chemical Engineers

View full text Add to dashboard Cite

“…In order to separate the MOF-based materials easily, previous studies have reported on MOF-functionalized magnetic nanoparticles which can be recycled under magnetic field and have excellent physical and chemical characters of the MOF shell (Ke et al 2012). Further investigations on magnetic MOFs with core-shell structure are still needed because the controllable growth of the MOF crystals on the magnetic nanoparticles remains a great challenge (Nong et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Magnetic ZIF-8/cellulose/Fe3O4 nanocomposite: preparation, characterization, and enzyme immobilization

Cao

Lai

et al. 2017

Bioresour. Bioprocess.

View full text Add to dashboard Cite

Background:The ZIF-8-coated magnetic regenerated cellulose-coated nanoparticles (ZIF-8@cellu@Fe 3 O 4 ) were successfully prepared and characterized. The result showed that ZIF-8 was successfully composited on to the surface of the cellulose-coated Fe 3 O 4 nanoparticles by co-precipitation method. Moreover, the glucose oxidase (GOx, from Aspergillus niger) was efficiently immobilized by the ZIF-8@Cellu@Fe 3 O 4 nanocarriers with enhanced catalytic activities. The enzyme loading was 94.26 mg/g and the enzyme activity recovery was more than 124.2%. This efficiently immobilized enzyme exhibits promising applications in biotechnology, diagnosis, biosensing, and biomedical devices. Conclusions:A new core-shell magnetic ZIF-8/cellulose nanocomposite (ZIF-8@Cellu@Fe 3 O 4 ) was fabricated and structurally characterized. Glucose oxidase (GOx) was successfully immobilized by the biocompatible ZIF-8@Cellu@

show abstract

“…The synthesized Fe 3 O 4 nanoparticles (0.5 g) were dispersed in 40 mL of ethanolic solution of mercaptoacetic acid (MAA, 0.29 mM) with sonication for 15 min, and then the mixture was allowed to react for 24 h under shaking. The product was separated by an external permanent magnet and washed three times with double distilled water and ethanol respectively [24].…”

Section: Synthesis Of Fe 3 O 4 @Maamentioning

confidence: 99%

Magnetite nanoparticles surface-modified with a zinc(II)-carboxylate Schiff base ligand as a sorbent for solid-phase extraction of organochlorine pesticides from seawater

2016

View full text Add to dashboard Cite

Magnetite nanoparticles were surface-modified with mercaptoacetic acid (MAA), complexed with Zn(II), and then treated with the dual Schiff base (referred to as imine-based ligand; IBL; obtained by reaction of paminobenzoic acid and 2,3-butanedione) to give particles with an architecture of type Fe 3 O 4 @MAA@IBL. These are shown to be viable sorbents for magnetic solid phase extraction of organochlorine pesticides (OCPs) from seawater samples. Efficient extraction of the OCPs probably is due to lone pair-π, π-complexation and π-interactions. The sorbent was characterized by transmission electron microscopy, scanning electron microscopy, FT-IR and energy-dispersive X-ray spectroscopy. The effects of the volumes of sample, sorbent dosage and eluent, adsorption and desorption times, and the salinity of the sample on the extraction efficiencies were optimized. The OCPs (heptachlor, aldrin, dieldrin, p,p'-DDE and p,p'-DDT) were quantified by gas chromatography with microelectron capture detection. Under optimal conditions, the limit of detections range was between 1.0 and 1.9 ng L −1 . The enrichment factors are between 84.1 and 99.9 %. The sorbent was applied to the rapid extraction of trace quantities of OCPs from seawater samples and gave good relative recoveries (78 to 108 %) and relative standard deviations (<8.3 %).

show abstract

Fe3O4@MOF core–shell magnetic microspheres with a designable metal–organic framework shell

Cited by 295 publications

References 35 publications

Facile synthesis of magnetic hybrid Fe3O4/MIL-101 via heterogeneous coprecipitation assembly for efficient adsorption of anionic dyes

Facile synthesis of magnetic hybrid Fe3O4/MIL-101 via heterogeneous coprecipitation assembly for efficient adsorption of anionic dyes

Magnetic ZIF-8/cellulose/Fe3O4 nanocomposite: preparation, characterization, and enzyme immobilization

Magnetite nanoparticles surface-modified with a zinc(II)-carboxylate Schiff base ligand as a sorbent for solid-phase extraction of organochlorine pesticides from seawater

Contact Info

Product

Resources

About