Core–shell superparamagnetic Fe3O4@β-CD composites for host–guest adsorption of polychlorinated biphenyls (PCBs)

Wang, Manlin; Liu, Peng; Wang, Yu; Zhou, Dongmei; Ma, Chen; Zhang, Dongju; Zhan, Jinhua

doi:10.1016/j.jcis.2015.01.061

Cited by 55 publications

(9 citation statements)

References 33 publications

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“…S7 and Table S3 demonstrated that the experimental data was in good agreement with both Langmuir and Freundlich isotherm models with the R 2 of 0.9986 and 0.9978, respectively. The maximal adsorption capacity derived from Langmuir isotherm model was 46.3 mg/g, which was similar with Fe 3 O 4 @SiO 2 @PSS/PDDA/MWCNTs [37] and much larger than Fe 3 O 4 @β-CD composites [39]. Hence, Fe 3 O 4 /mSiO 2 -Me-PTSA is a very efficient adsorbent to remove PCBs from large volumes of aqueous solutions.…”

Section: Evaluation Of the Adsorption Propertiessupporting

confidence: 56%

Rapid preparation of methyltrimethoxy‐modified magnetic mesoporous silica as an effective solid‐phase extraction adsorbent

Qin

Fan

et al. 2018

J of Separation Science

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A time-saving method was applied to synthesize methyltrimethoxy-modified magnetic mesoporous silica with or without p-toluenesulfonic acid as the catalyst for magnetic solid-phase extraction. The synthesized materials were systematically characterized. Results demonstrated that methyltrimethoxy modified magnetic mesoporous silica with p-toluenesulfonic acid as the catalyst has a relatively smaller aperture and extreme hydrophobicity (water contact angle of 135°). To evaluate the feasibility of these prepared materials as effective adsorbents, it was combined with gas chromatography and electron capture detection to determine 26 polychlorinated biphenyls in environmental water. The result revealed that methyltrimethoxy modified magnetic mesoporous silica with p-toluenesulfonic acid as the catalyst had the best extraction efficiency and recovery. Under the optimized extracted conditions, the proposed method showed good linearity within the concentration range of 5 to 200 ng/L with correlation coefficients of 0.9969 to 0.9999. The limits of detection and quantification based on signal-to-noise ratios of 3 and 10 were in the range of 0.16 to 0.91 and 0.52 to 3.0 ng/L, respectively. The polychlorinated biphenyl concentrations in environmental water samples were successfully determined using the developed method. PCB008 and PCB110 were 4.05 and 8.52 ng/L in Red-Star lake water (Hubei Province, China), respectively.

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Section: Evaluation Of the Adsorption Propertiessupporting

confidence: 56%

Rapid preparation of methyltrimethoxy‐modified magnetic mesoporous silica as an effective solid‐phase extraction adsorbent

Qin

Fan

et al. 2018

J of Separation Science

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“…MNPs are covered by a silica layer bonded β-cyclodextrin (β-CD) to construct core-shell Fe3O4@β-CD composites for removing PCB28 and PCB52 in aqueous solutions with promising results [257]. The removal of BPA is inhibited in the presence of NOM.…”

Section: Adsorptive and Separative Removal Of Organic Contaminantsmentioning

confidence: 99%

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

2017

Journal of Hazardous Materials

305

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“…(33, 34) Thanks to these specific host-guest interactions, β-CD has been widely used as a surface modifier of IONPs specifically for the capture of some hydrophobic organic contaminants, such as PCBs, and has gained interests in environmental remediation. (35–37) In the past year, Wang et al (38) developed a core-shell magnetic nanoparticle consisting of a magnetite core and a silica bonded β-cyclodextrin layer (Fe 3 O 4 @ β-CD) capable of adsorbing PCB-28 and PCB-52 in aqueous solutions, as shown in Figure 1C. The adsorption capacities of Fe 3 O 4 @ β-CD for the PCB congeners were studied in water and incubated for 24h, after which the nanoparticles were isolated with a magnet and UV absorbance measurements were used to determine the concentration of the residual solution.…”

Section: Introductionmentioning

confidence: 99%

Recent advances on iron oxide magnetic nanoparticles as sorbents of organic pollutants in water and wastewater treatment

Gutiérrez

Dziubla

Hilt

2017

Reviews on Environmental Health

178

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Abstract The constant growth in population worldwide over the past decades continues to put forward the need to provide access to safe, clean water to meet human needs. There is a need for cost-effective technologies for water and wastewater treatment that can meet the global demands and the rigorous water quality standards and at the same maximizing pollutant efficiency removal. Current remediation technologies have failed in keeping up with these factors without becoming cost-prohibitive. Most recently, nanotechnology has been sought as the best alternative to increase access to water supplies by remediating those already contaminated and offering ways to access unconventional sources. The use of iron oxide magnetic nanoparticles as nanoadsorbents has led way to a new class of magnetic separation strategies for water treatment. This review focuses on highlighting some of the most recent advances in core-shell iron oxide magnetic nanoparticles and nanocomposites containing iron oxide nanoparticles currently being developed for water and wastewater treatment of organic pollutants. We discuss the novelty of these novel materials and the insight gained from their advances that can help develop cost-effective reusable technologies for scale-up and commercial use.

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Core–shell superparamagnetic Fe3O4@β-CD composites for host–guest adsorption of polychlorinated biphenyls (PCBs)

Cited by 55 publications

References 33 publications

Rapid preparation of methyltrimethoxy‐modified magnetic mesoporous silica as an effective solid‐phase extraction adsorbent

Rapid preparation of methyltrimethoxy‐modified magnetic mesoporous silica as an effective solid‐phase extraction adsorbent

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

Recent advances on iron oxide magnetic nanoparticles as sorbents of organic pollutants in water and wastewater treatment

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