Preparation and application of grafted β‑cyclodextrin/thermo-sensitive polymer onto modified Fe3O4@SiO2 nano-particles for fenitrothion elimination from aqueous solution

Tizro, Nazli; Saeb, Keivan; Panahi, Homayon Ahmad; Sobhanardakani, Soheil

doi:10.1016/j.microc.2018.09.005

Cited by 38 publications

(12 citation statements)

References 61 publications

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“…[104] The authors also reported that maximum adsorption occurred at a temperature of 25 °C, while temperatures between 30 to 45 °C decreased the adsorption efficiency, thereby confirming the thermoresponsive nature of N-vinylcaprolactam. [104] Another thermoresponsive copolymer, poly(ethylene glycol)-methacrylate, was studied for removal of Cr 6+ . The highest retention of the contaminant Figure 1.…”

Section: Thermocontrolled Adsorbentsmentioning

confidence: 77%

“…The thermosensitive polymer N-vinylcaprolactam was employed with β-cyclodextrin and magnetite NPs for adsorption of fenitrothion. [104] The adsorption capacity and removal efficiency in real waste samples reached to 30 mg g −1 and >99%, respectively. [104] The authors also reported that maximum adsorption occurred at a temperature of 25 °C, while temperatures between 30 to 45 °C decreased the adsorption efficiency, thereby confirming the thermoresponsive nature of N-vinylcaprolactam.…”

Section: Thermocontrolled Adsorbentsmentioning

confidence: 95%

“…[104] The adsorption capacity and removal efficiency in real waste samples reached to 30 mg g −1 and >99%, respectively. [104] The authors also reported that maximum adsorption occurred at a temperature of 25 °C, while temperatures between 30 to 45 °C decreased the adsorption efficiency, thereby confirming the thermoresponsive nature of N-vinylcaprolactam. [104] Another thermoresponsive copolymer, poly(ethylene glycol)-methacrylate, was studied for removal of Cr 6+ .…”

Section: Thermocontrolled Adsorbentsmentioning

confidence: 95%

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Smart Adsorbents for Aquatic Environmental Remediation

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Mudhoo

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Section: Thermocontrolled Adsorbentsmentioning

confidence: 77%

Section: Thermocontrolled Adsorbentsmentioning

confidence: 95%

Section: Thermocontrolled Adsorbentsmentioning

confidence: 95%

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Smart Adsorbents for Aquatic Environmental Remediation

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Mudhoo

Khan

et al. 2021

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“…The zeta potential value of nanoadsorbent is positive when pH < pH pzc and is negative when pH > pH pzc . The surfaces of nanoadsorbent are negatively charged in case of negative zeta potential value which can be due to electrostatic interaction 27,28 …”

Section: Resultsmentioning

confidence: 99%

Near‐infrared triggered drug delivery of Imatinib Mesylate by molybdenum disulfide nanosheets grafted copolymers as thermosensitive nanocarriers

Kalakoo

Heydarinasab

Panahi

et al. 2021

Polymers for Advanced Techs

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A simple and facile approach has been applied for the synthesis of molybdenum disulfide nanosheets (MNs). Molybdenum disulfide nanosheets were prepared by mix‐solvent reflux exfoliation technique of bulk MoS2 with ethanol/water as the solvent. In this paper, a novel nano sorbent is reported for the surface grafting of poly [N‐Vinyl caprolactam‐co‐Vinyl Acetate] copolymer onto molybdenum disulfide nanosheets. The MNs@ p (NVCL‐co‐VAc) was modified by 3, 4‐diaminobenzoic acid (DABA) to enhance its adsorption capacity. The ability of MNs@ p (NVCL‐co‐VAc)‐DABA was estimated as a nanocarrier for the delivery of Imatinib Mesylate (IM) as an anticancer drug. The polymer grafted MNs@ p (NVCL‐co‐VAc)‐DABA was characterized by using field emission scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, elemental analysis, and X‐ray powder diffraction. The effect of the experimental parameters, such as pH, contact time, and the temperature was evaluated. In vitro controlled drug release and phototherapy under near‐infrared (NIR) light irradiation are also discussed. In vitro release of IM from IM/MNs@ p (NVCL‐co‐VAc)‐DABA nanocarriers in the simulated blood fluid (pH = 7.4) shown that the release of IM was faster at 50°C than that at 37°C. The drug release amount under NIR light irradiation reached up to 98% over 15 min, which was about 12 times that without NIR light irradiation. The existence of absorbed NIR energy causes shrinkage of thermosensitive polymer chains and successfully caused the drug release. The sorption process was described by the Langmuir model and pseudo‐second‐order kinetic. The drug release kinetics was examined using Zero‐order, First‐order, Korsmeyer–Peppas, and Higuchi mathematical models.

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“…Recent approaches demonstrated that BCD-based polymers obtained by crosslinking with EPI can be used in municipal wastewater treatment pilot plants to remove several micropollutants, including BPA, with over 80% efficiency [ 28 ]. Also, the BCDP adsorption capacities were improved by the presence of nano-adsorbents such as Fe 3 O 4 , SiO 2 , silver nanoparticles, or carbon nanotubes due to their high specific surface area and absence of internal diffusion resistance that enhances the kinetics for the adsorption processes of different contaminating agents such as BPA, organophoshorous insecticides, or p-nitrophenol from water [ 9 , 20 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Chemical Architectures Based on Beta-Cyclodextrin Derivatives Covalently Attached on Polymer Spheres

et al. 2021

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This study presents the synthesis and characterization of polymer derivatives of beta-cyclodextrin (BCD), obtained by chemical grafting onto spherical polymer particles (200 nm) presenting oxirane functional groups at their surface. The polymer spheres were synthesized by emulsion polymerization of styrene (ST) and hydroxyethyl methacrylate (HEMA), followed by the grafting on the surface of glycidyl methacrylate (GMA) by seeded emulsion polymerization. The BCD-polymer derivatives were obtained using two BCD derivatives with hydroxylic (BCD-OH) and amino groups (BCD-NH2). The degree of polymer covalent functionalization using the BCD-OH and BCD-NH2 derivatives were determined to be 4.27 and 19.19 weight %, respectively. The adsorption properties of the materials were evaluated using bisphenol A as a target molecule. The best fit for the adsorption kinetics was Lagergren’s model (both for Qe value and for R2) together with Weber’s intraparticle diffusion model in the case of ST-HEMA-GMA-BCD-NH2. The isothermal adsorption evaluation indicated that both systems follow a Langmuir type behavior and afforded a Qmax value of 148.37 mg g−1 and 37.09 mg g−1 for ST-HEMA-GMA-BCD-NH2 and ST-HEMA-GMA-BCD-OH, respectively. The BCD-modified polymers display a degradation temperature of over 400 °C which can be attributed to the existence of hydrogen bonds and BCD thermal degradation pathway in the presence of the polymers.

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Preparation and application of grafted β‑cyclodextrin/thermo-sensitive polymer onto modified Fe3O4@SiO2 nano-particles for fenitrothion elimination from aqueous solution

Cited by 38 publications

References 61 publications

Smart Adsorbents for Aquatic Environmental Remediation

Smart Adsorbents for Aquatic Environmental Remediation

Near‐infrared triggered drug delivery of Imatinib Mesylate by molybdenum disulfide nanosheets grafted copolymers as thermosensitive nanocarriers

Novel Chemical Architectures Based on Beta-Cyclodextrin Derivatives Covalently Attached on Polymer Spheres

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