Synthesis, characterization and sorption studies of aromatic compounds by hydrogels of chitosan blended with β-cyclodextrin- and PVA-functionalized pectin

Filho, Cesar M. C.; Bueno, Pedro V.A.; Matsushita, Alan F.Y.; Rubira, Adley F.; Muniz, Edvani C.; Durães, Luísa; Murtinho, Dina; Valente, Artur J.M.

doi:10.1039/c8ra02332h

Cited by 40 publications

(40 citation statements)

References 61 publications

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“…However, the highest Q e, exp value was observed for the formulation 8 (Table 2), while the hydrogel obtained by using the formulation 3 had the lowest swelling degree. It is necessary to mention that hydrogel of formulation 8 had a slightly higher swelling degree (Q e,exp = 23.5) in comparison to the pectin-PVA/CS hydrogel (Q e,exp = 23.0) reported elsewhere [33]. These results show that CS and also MA-β-CD are essential to affect the swelling behavior of hydrogels, in agreement with the analysis done in Section 3.2.…”

Section: Swelling Degreesupporting

confidence: 88%

“…Some typical bands of CD (1064, 1659, and 2940 cm −1) remained unaffected in the IR spectrum of MA-β-CD, suggesting that the structure of β-CD remains almost unchanged upon functionalization [52]. In addition, the peaks at 1659 and 1737 cm −1 , due to MA, may be the main evidence of the incorporation of MA in the β-CD backbone [33,[53][54][55][56]. Both 1 H NMR and FTIR spectroscopies revealed β-CD modification with the insertion of MA.…”

Section: Synthesis Of Maleic Acid-β-cyclodextrin (Ma-β-cd)mentioning

confidence: 93%

“…Our research group also has developed hydrogels based on natural polysaccharide for petroleum derivative pollutant compounds [33]. For example, the sorption of hydrophobic compounds onto a hydrogel composed by chitosan and pectin functionalized with β-cyclodextrin (β-CD) and poly(vinyl alcohol) (PVA) was evaluated [33]. The results highlighted the higher sorption capacity of β-CD-and PVA-Pec/CS gels in comparison to the unfunctionalized material [28].…”

Section: Introductionmentioning

confidence: 99%

“…β-CD-Pec/CS gels showed higher sorption capacity than the PVA-Pec/CS material. That was assigned to the formation of the host-guest supramolecular structure between β-CD, and aromatic moieties present in pollutants [33].…”

Section: Introductionmentioning

confidence: 99%

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Uncommon Sorption Mechanism of Aromatic Compounds onto Poly(Vinyl Alcohol)/Chitosan/Maleic Anhydride-β-Cyclodextrin Hydrogels

et al. 2020

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Aromatic hydrocarbons are extensive environmental pollutants occurring in both water and air media, and their removal is a priority effort for a healthy environment. The use of adsorbents is among the several strategies used for the remediation of these compounds. In this paper, we aim the synthesis of an amphiphilic hydrogel with the potential for the simultaneous sorption of a set of monocyclic and polycyclic aromatic hydrocarbons associated with toxicity effects in humans. Thus, we start by the synthesis of a copolymer-based in chitosan and β-cyclodextrin previously functionalized with the maleic anhydride. The presence of β-cyclodextrin will confer the ability to interact with hydrophobic compounds. The resulting material is posteriorly incorporated in a cryogel of poly(vinyl alcohol) matrix. We aim to improve the amphiphilic ability of the hydrogel matrix. The obtained hydrogel was characterized by swelling water kinetics, thermogravimetric analysis, rheological measurements, and scanning electron microscopy. The sorption of aromatic hydrocarbons onto the gel is characterized by pseudo-first-order kinetics and Henry isotherm, suggesting a physisorption mechanism. The results show that the presence of maleic anhydride-β-cyclodextrin and chitosan into hydrogels leads to an increase in the removal efficiency of the aromatic compounds. Additionally, the capacity of this hydrogel for removing these pollutants from a fossil fuel sample has also been tested.

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Section: Swelling Degreesupporting

confidence: 88%

Section: Synthesis Of Maleic Acid-β-cyclodextrin (Ma-β-cd)mentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Uncommon Sorption Mechanism of Aromatic Compounds onto Poly(Vinyl Alcohol)/Chitosan/Maleic Anhydride-β-Cyclodextrin Hydrogels

et al. 2020

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“…The EDC-derived phytohormones possess a positively charged quaternary ammonium group that may attract the hydroxyl groups or oxygen groups existing on the surface of Ti 3 C 2 [27]. At the same time, the β-CD could selectively bind the phytohormones by molecular piston [28]. The effect of the amount of magnetic solid-phase extraction sorbents were investigated by adding different amounts Fe 3 O 4 @Ti 3 C 2 @β-CD.…”

Section: Optimization Of the Amount Of Magnetic Solid-phase Extractiomentioning

confidence: 99%

Magnetic Solid-Phase Extraction and in Situ Derivatization for Determining Phytohormones and in Oilseeds by Ultra-Performance Liquid Chromatography-tandem Mass Spectrometry

Luo

Wang

et al. 2020

Preprint

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Background: Phytohormones are a group of naturally occurring signaling molecules which influence physiological processes of oil crops. Simultaneous determination of multiple phytohormones in oilseeds is still a challenge due to their trace concentrations, species diversity, and lipid interference. Therefore, a simple and selective method for the simultaneous determination of multiple phytohormones in oilseeds is urgently needed.Results: In this study, the Fe3O4@Ti3C2@β-CD nanoparticles were successfully synthesized and used for the first time as an adsorbent for the magnetic dispersive solid-phase extraction of phytohormones from oilseeds. The magnetic dispersive solid-phase extraction and in situ derivation by the addition of N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (EDC) were ingeniously combined. This efficient pre-treatment method integrated the extraction, purification, and derivatization processes into one single step. Several parameters affecting the efficiency of extraction and derivatization were evaluated. Under the optimized analysis conditions, satisfactory methodological performance was achieved. High linearities (R2 > 0.9928) at three spiked levels, as well as the low matrix effect (ranged from 16.63 % to 17.06 %) and limits of detection (0.89-13.62 pg/mL) were also obtained. The intra and inter-day relative standard deviations (RSDs) were less than 13.7 % and 11.6 %, respectively. The recoveries were ranged from 80.4 % to 115.1 %. This method was successfully employed for analyzing 12 phytohormones in different oilseeds samples.Conclusion: A simple and sensitive method based on the magnetic solid phase extraction integrated with in situ derivations for the profiling of 12 phytohormones, including 9 gibberellins (GAs), indole-3-acetic acid (IAA), abscisic acid (ABA), and jasmonic acid (JA) in a single rapeseed seed was developed by using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).

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Cyclodextrin‐Cross‐Linked Hydrogels for Adsorption and Photodegradation of Cationic Dyes in Aqueous Solution

Zhang

Liu

2021

Chemistry An Asian Journal

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Possessing three‐dimensional porous structures and tunable mechanical strengths, cyclodextrin‐containing polymeric hydrogels are one of the most promising water‐based adsorbent materials due to their easy availability, simple chemical modification and environmental friendliness. In this work, two kinds of hydrogels were prepared via the copolymerization with acrylic acid and vinyl‐derivatized β‐cyclodextrins in water. These two gels have showed good adsorption performance towards cationic dyes through the noncovalent interactions with their anionic backbones and porous network. Meanwhile, pseudo‐second‐order model was selected to clarify the adsorption kinetics process. Moreover, nano‐scaled TiO2 was doped into these resultant cyclodextrins‐based hydrogels to achieve efficient degradation of dyes upon light irradiation. The obtained TiO2‐loaded hydrogels could exhibit improved adsorption performance and make the adsorbed dyes photo‐degraded with the decolorization rates above 95%. It can be envisioned that such cyclodextrin‐based soft materials may find applications in dye clearance and water treatment.

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Synthesis, characterization and sorption studies of aromatic compounds by hydrogels of chitosan blended with β-cyclodextrin- and PVA-functionalized pectin

Abstract: Complex coacervation of chitosan with β-cyclodextrin- and poly(vinyl alcohol)-functionalized pectin: ability for simultaneous removal of six different aromatic compounds.

Cited by 40 publications

References 61 publications

Uncommon Sorption Mechanism of Aromatic Compounds onto Poly(Vinyl Alcohol)/Chitosan/Maleic Anhydride-β-Cyclodextrin Hydrogels

Uncommon Sorption Mechanism of Aromatic Compounds onto Poly(Vinyl Alcohol)/Chitosan/Maleic Anhydride-β-Cyclodextrin Hydrogels

Magnetic Solid-Phase Extraction and in Situ Derivatization for Determining Phytohormones and in Oilseeds by Ultra-Performance Liquid Chromatography-tandem Mass Spectrometry

Cyclodextrin‐Cross‐Linked Hydrogels for Adsorption and Photodegradation of Cationic Dyes in Aqueous Solution

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