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Synthesis of magnetic metal-organic framework (MOF) for efficient removal of organic dyes from water.

Zhao X, Liu S, Tang Z, Niu H, Cai Y, Meng W, Wu F, Giesy JP - Sci Rep (2015)

Bottom Line: Adsorption capacity was 84 mg MB g(-1) at an initial MB concentration of 30 mg L(-1), which increased to 245 mg g(-1) when the initial MB concentration was 300 mg L(-1).This capacity was much greater than most other adsorbents reported in the literature.In addition, MFC adsorbents possess excellent reusability, being effective after at least five consecutive cycles.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.

ABSTRACT
A novel, simple and efficient strategy for fabricating a magnetic metal-organic framework (MOF) as sorbent to remove organic compounds from simulated water samples is presented and tested for removal of methylene blue (MB) as an example. The novel adsorbents combine advantages of MOFs and magnetic nanoparticles and possess large capacity, low cost, rapid removal and easy separation of the solid phase, which makes it an excellent sorbent for treatment of wastewaters. The resulting magnetic MOFs composites (also known as MFCs) have large surface areas (79.52 m(2) g(-1)), excellent magnetic response (14.89 emu g(-1)), and large mesopore volume (0.09 cm(3) g(-1)), as well as good chemical inertness and mechanical stability. Adsorption was not drastically affected by pH, suggesting π-π stacking interaction and/or hydrophobic interactions between MB and MFCs. Kinetic parameters followed pseudo-second-order kinetics and adsorption was described by the Freundlich isotherm. Adsorption capacity was 84 mg MB g(-1) at an initial MB concentration of 30 mg L(-1), which increased to 245 mg g(-1) when the initial MB concentration was 300 mg L(-1). This capacity was much greater than most other adsorbents reported in the literature. In addition, MFC adsorbents possess excellent reusability, being effective after at least five consecutive cycles.

No MeSH data available.


Related in: MedlinePlus

Synthesis of Fe3O4/Cu3(BTC)2 magnetic materials.
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f1: Synthesis of Fe3O4/Cu3(BTC)2 magnetic materials.

Mentions: Herein, we present a novel, simple and efficient scheme to fabricate magnetic MOF by simply controlling the rate of dropping of the organic ligand (Fig. 1). The magnetic MOF composite, Fe3O4/Cu3(BTC)2, was obtained by incorporation of Fe3O4 and Cu3(BTC)2. BTC is the acronym for benzene-1,3,5-tricarboxylate and the complex, Cu3(BTC)2, has been referred to in the literature as “HKUST-1”. MB was chosen as a typical adsorbate to be removed from water by use of and used Fe3O4/Cu3(BTC)2 as asorbent. Effects of pH, contact time, temperature and dosage on adsorption capacity were also investigated in detail. The Fe3O4/Cu3(BTC)2 exhibited both magnetic characteristics and high porosity, making it an excellent sorbent for treatment of wastewaters.


Synthesis of magnetic metal-organic framework (MOF) for efficient removal of organic dyes from water.

Zhao X, Liu S, Tang Z, Niu H, Cai Y, Meng W, Wu F, Giesy JP - Sci Rep (2015)

Synthesis of Fe3O4/Cu3(BTC)2 magnetic materials.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4493573&req=5

f1: Synthesis of Fe3O4/Cu3(BTC)2 magnetic materials.
Mentions: Herein, we present a novel, simple and efficient scheme to fabricate magnetic MOF by simply controlling the rate of dropping of the organic ligand (Fig. 1). The magnetic MOF composite, Fe3O4/Cu3(BTC)2, was obtained by incorporation of Fe3O4 and Cu3(BTC)2. BTC is the acronym for benzene-1,3,5-tricarboxylate and the complex, Cu3(BTC)2, has been referred to in the literature as “HKUST-1”. MB was chosen as a typical adsorbate to be removed from water by use of and used Fe3O4/Cu3(BTC)2 as asorbent. Effects of pH, contact time, temperature and dosage on adsorption capacity were also investigated in detail. The Fe3O4/Cu3(BTC)2 exhibited both magnetic characteristics and high porosity, making it an excellent sorbent for treatment of wastewaters.

Bottom Line: Adsorption capacity was 84 mg MB g(-1) at an initial MB concentration of 30 mg L(-1), which increased to 245 mg g(-1) when the initial MB concentration was 300 mg L(-1).This capacity was much greater than most other adsorbents reported in the literature.In addition, MFC adsorbents possess excellent reusability, being effective after at least five consecutive cycles.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.

ABSTRACT
A novel, simple and efficient strategy for fabricating a magnetic metal-organic framework (MOF) as sorbent to remove organic compounds from simulated water samples is presented and tested for removal of methylene blue (MB) as an example. The novel adsorbents combine advantages of MOFs and magnetic nanoparticles and possess large capacity, low cost, rapid removal and easy separation of the solid phase, which makes it an excellent sorbent for treatment of wastewaters. The resulting magnetic MOFs composites (also known as MFCs) have large surface areas (79.52 m(2) g(-1)), excellent magnetic response (14.89 emu g(-1)), and large mesopore volume (0.09 cm(3) g(-1)), as well as good chemical inertness and mechanical stability. Adsorption was not drastically affected by pH, suggesting π-π stacking interaction and/or hydrophobic interactions between MB and MFCs. Kinetic parameters followed pseudo-second-order kinetics and adsorption was described by the Freundlich isotherm. Adsorption capacity was 84 mg MB g(-1) at an initial MB concentration of 30 mg L(-1), which increased to 245 mg g(-1) when the initial MB concentration was 300 mg L(-1). This capacity was much greater than most other adsorbents reported in the literature. In addition, MFC adsorbents possess excellent reusability, being effective after at least five consecutive cycles.

No MeSH data available.


Related in: MedlinePlus