A novel hydrophilic–hydrophobic magnetic interpenetrating polymer networks (IPNs) and its adsorption towards salicylic acid from aqueous solution

Fu, Zhenyu; He, Chaohui; Li, He-Bing; Ye, Chong; Chen, Limiao; Huang, Jianhan; Liu, You‐Nian

doi:10.1016/j.cej.2015.04.146

Cited by 56 publications

(18 citation statements)

References 47 publications

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“…4A). This observation is confirmed by several adsorbents in the previous literature [8][9][10][11][12][13]. As the initial pH increased to 3.5 sorption capacity increased to more than 74 % and decreased in the initial pH range above 3.5 and 12 (>74 and 11.5 %).…”

Section: Adsorption Experimentssupporting

confidence: 87%

“…Although the last influence of these type of contaminants on population health remains up to this time a field of intense study, their uptake from wastewater and aquatic media is definitely an important challenge for world-wide government agencies and scientists. Indeed, numerous attempts including physical and chemical technologies comprising advanced oxidation processes (AOPs) such as oxidation, TiO 2 photocatalysis, perozonation, ozonation, direct photolysis, solar photocatalysis, Fenton reactions and ultrasonic irradiation, electrochemical oxidation, electrocoagulation, membrane separation, and adsorption have been made to improve adsorbents in order to uptake emerging contaminants from drinking water [8][9][10][11][12][13][14]. However, the high-cost of the systems, the uncontrolled reaction conditions, limitation on being used in large scale and the production of secondary contaminants are the main drawbacks of the considered techniques.…”

Section: Introductionmentioning

confidence: 99%

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Removal of salicylic acid as an emerging contaminant by a polar nano-dendritic adsorbent from aqueous media

Arshadi

Mousavinia

Abdolmaleki

et al. 2017

Journal of Colloid and Interface Science

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A polar nano-dendritic adsorbent containing amine groups (SAPAMAA) was synthesized onto the nanoparticles of SiOAlO and its uptake of salicylic acid (SA) from the synthetic and real water was investigated. The synthesized nanomaterials were fully studied by nuclear magnetic resonance spectrum (H NMR and C NMR), Fourier transform infrared spectroscopy (FT-IR), zeta potential (ζ), inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) and elemental analysis. Various parameters such as the effect of the contact time, adsorbent dosage, initial SA concentrations, effect of solution's temperature, interfering ions, the hydrophobicity of the nanoadsorbent and initial pH were assessed. The contact time to approach equilibrium for higher adsorption was 15min (252.8mgg). The isotherms could be fitted by Sips model (with the average relative error of 6.6) and the kinetic data could be characterized by pseudo-second-order rate equation (with the average relative error of 13.0), implying chemical adsorption as the ratelimiting step of uptake process which was supported by the experimental data from the effect of interfering ions, zeta potential, and altering of the adsorbent's hydrophobicity. The uptake capacities decreased with temperature increasing, and showed that the uptake of SA was chemically exothermic in nature between 15 and 80°C. In addition, the spent SAPAMAA could be regenerated by the removal of adsorbed SA with NaOH and ethanol to regain the original SAPAMAA, the regenerated SAPAMAA also exhibited the high adsorption capacity after 10 runs. Moreover, SAPAMAA could also be applied to uptake SA from a real water (Anzali lagoon water). We envisage that the prepared nano-dendritic with remarkable characteristics such as environmentally friendly, low-cost, easy preparation in large quantity, high mechanical and chemical stability will play a significant role in developing a new generation of emerging contaminants adsorbent.

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Section: Adsorption Experimentssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Removal of salicylic acid as an emerging contaminant by a polar nano-dendritic adsorbent from aqueous media

Arshadi

Mousavinia

Abdolmaleki

et al. 2017

Journal of Colloid and Interface Science

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“…33 Compared to phenol, salicylic acid has another carboxyl group and the carboxyl group is at the ortho-position with respect to the phenolic hydroxyl group. 22,27,40 Moreover, some other molecules such as phenol are not adsorbed effectively and the separation of salicylic acid from phenol is possible. HCP/PADETA IPNs in this study possessed hydrophobic HCP networks as well as hydrophilic PADETA networks.…”

Section: Separation Of Salicylic Acid From Phenol In Their Mixed Solumentioning

confidence: 99%

Comparison of hyper-cross-linked polystyrene/polyacryldiethylenetriamine (HCP/PADETA) interpenetrating polymer networks (IPNs) with hyper-cross-linked polystyrene (HCP): structure, adsorption and separation properties

Han

Huang

et al. 2016

RSC Adv.

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Novel hyper-cross-linked polystyrene/polyacryldiethylenetriamine (HCP/PADETA) interpenetrating polymer networks (IPNs) were prepared, characterized and evaluated for their adsorption and separation properties using hyper-cross-linked polystyrene (HCP) as the reference. In spite of its much lower Brunauer-Emmett-Teller surface area and less pore volume, HCP/PADETA IPNs possessed a preferable pore structure and appropriate polarity, resulting in a larger equilibrium capacity, faster adsorption rate, higher dynamic breakthrough and saturated capacity towards salicylic acid than HCP. In particular, HCP/ PADETA IPNs had a higher enrichment factor for salicylic acid over phenol, leading to the high-efficiency separation of salicylic acid from phenol in their mixed solution.

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“…As shown in Table S1, by comparing the correlation coefficients (R 2 ), the Langmuir model could describe the experimental data better than the Freundlich model, indicating a monolayer adsorption onto the Mag@ZnO−Co 3 O 4 surface. 56,57 The n value calculated from the Freundlich isotherm model is larger than unity, indicating the strong interaction force between OTC and Mag@ZnO−Co 3 O 4 adsorbent. The maximum adsorption capacity (q max ) of Mag@ZnO−Co 3 O 4 is found to be 128 mg/g for OTC, calculated by the Langmuir model, which indicates that the experimental values of q max are in good agreement with the theoretical results.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Synthesis of Novel Magnetic Microspheres with Bimetal Oxide Shell for Excellent Adsorption of Oxytetracycline

Lian

Lou

2017

ACS Sustainable Chem. Eng.

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Multifunctional magnetic microspheres (Mag@ZnO–Co3O4) with bimetal oxide shell were synthesized via a facile method. The Mag@ZnO–Co3O4 composite was characterized through a vibrating sample magnetometer, N2 adsorption analysis, Fourier transform infrared spectroscopy, powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy analyses. The structural analysis showed that the as-prepared microsphere possessed a mean diameter of 150 nm, a bimetal oxide shell thickness of ∼10.0 nm, and a magnetic core, which endowed it with good dispersibility, strong magnetism, and excellent adsorption property for oxytetracycline (OTC). Several experimental conditions, such as solution pH, adsorption time, OTC concentration, and ionic strength were systematically investigated. The Mag@ZnO–Co3O4 composite exhibited a fast adsorption rate, that is, the equilibrium was reached within 90 min, when the concentration of OTC was between 10 and 30 mg/L. The composite showed favorable performance for the adsorption of OTC in the pH range 5–9. According to the adsorption isotherms and kinetics, the removal of OTC was efficient and obeyed the pseudo-second-order rate equation and Langmuir adsorption model.

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A novel hydrophilic–hydrophobic magnetic interpenetrating polymer networks (IPNs) and its adsorption towards salicylic acid from aqueous solution

Cited by 56 publications

References 47 publications

Removal of salicylic acid as an emerging contaminant by a polar nano-dendritic adsorbent from aqueous media

Removal of salicylic acid as an emerging contaminant by a polar nano-dendritic adsorbent from aqueous media

Comparison of hyper-cross-linked polystyrene/polyacryldiethylenetriamine (HCP/PADETA) interpenetrating polymer networks (IPNs) with hyper-cross-linked polystyrene (HCP): structure, adsorption and separation properties

Synthesis of Novel Magnetic Microspheres with Bimetal Oxide Shell for Excellent Adsorption of Oxytetracycline

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